diff --git a/include/mruby/compile.h b/include/mruby/compile.h
index a4bd374c3..9abc50f57 100644
--- a/include/mruby/compile.h
+++ b/include/mruby/compile.h
@@ -134,6 +134,7 @@ struct mrb_parser_state {
   mrb_sym* filename_table;
   uint16_t filename_table_length;
   uint16_t current_filename_index;
+  uint16_t prev_file_lineno;    /* saved lineno before partial_hook file switch */
 
   /* Variable-sized node management */
   mrb_ast_node *nvars;
diff --git a/mrbgems/mruby-bin-mrbc/bintest/mrbc.rb b/mrbgems/mruby-bin-mrbc/bintest/mrbc.rb
index 90bbd123f..b8028eacb 100644
--- a/mrbgems/mruby-bin-mrbc/bintest/mrbc.rb
+++ b/mrbgems/mruby-bin-mrbc/bintest/mrbc.rb
@@ -28,3 +28,20 @@ assert('embedded document with invalid terminator') do
   assert_equal "#{a.path}:3:0: embedded document meets end of file", result.chomp
   assert_equal 1, $?.exitstatus
 end
+
+assert('debug info preserves line/filename across multiple inputs. #1316') do
+  a = Tempfile.new(['a', '.rb'])
+  b = Tempfile.new(['b', '.rb'])
+  out = Tempfile.new(['out', '.mrb'])
+  a.write("# line 1\n# line 2\nputs \"from a\"\n# line 4\nundefined_in_a\n")
+  a.flush
+  b.write("# b line 1\nputs \"from b\"\n")
+  b.flush
+  `#{cmd('mrbc')} -g -o #{out.path} #{a.path} #{b.path}`
+  assert_equal 0, $?.exitstatus
+  result = `#{cmd('mruby')} -b #{out.path} 2>&1`
+  # Error should point at a.rb line 5 (the `undefined_in_a` line),
+  # not b.rb or a different line within a.rb.
+  assert_include result, "#{a.path}:5:"
+  assert_not_include result, b.path
+end
diff --git a/mrbgems/mruby-compiler/core/parse.y b/mrbgems/mruby-compiler/core/parse.y
index abd1a1cc9..10c67f028 100644
--- a/mrbgems/mruby-compiler/core/parse.y
+++ b/mrbgems/mruby-compiler/core/parse.y
@@ -151,9 +151,13 @@ init_var_header(struct mrb_ast_var_header *header, parser_state *p, enum node_ty
   header->filename_index = p->current_filename_index;
   header->node_type = (uint8_t)type;
 
-  /* Handle file boundary edge case */
+  /* Handle file boundary edge case: this node is reduced from a token that
+     was buffered by bison lookahead before partial_hook switched the file,
+     so attribute it to the previous file at its last known lineno rather
+     than the new file at lineno=0. */
   if (p->lineno == 0 && p->current_filename_index > 0) {
     header->filename_index--;
+    header->lineno = p->prev_file_lineno;
   }
 }
 
@@ -7658,6 +7662,10 @@ mrb_parser_set_filename(struct mrb_parser_state *p, const char *f)
 
   sym = mrb_intern_cstr(p->mrb, f);
   p->filename_sym = sym;
+  /* Save current lineno so that AST nodes produced from a bison lookahead
+     across the file boundary (in partial_hook) can recover the correct
+     line in init_var_header instead of recording lineno=0. */
+  p->prev_file_lineno = p->lineno;
   p->lineno = (p->filename_table_length > 0)? 0 : 1;
 
   for (i = 0; i < p->filename_table_length; i++) {
diff --git a/mrbgems/mruby-compiler/core/y.tab.c b/mrbgems/mruby-compiler/core/y.tab.c
index 7596393e6..697e27fd1 100644
--- a/mrbgems/mruby-compiler/core/y.tab.c
+++ b/mrbgems/mruby-compiler/core/y.tab.c
@@ -213,9 +213,13 @@ init_var_header(struct mrb_ast_var_header *header, parser_state *p, enum node_ty
   header->filename_index = p->current_filename_index;
   header->node_type = (uint8_t)type;
 
-  /* Handle file boundary edge case */
+  /* Handle file boundary edge case: this node is reduced from a token that
+     was buffered by bison lookahead before partial_hook switched the file,
+     so attribute it to the previous file at its last known lineno rather
+     than the new file at lineno=0. */
   if (p->lineno == 0 && p->current_filename_index > 0) {
     header->filename_index--;
+    header->lineno = p->prev_file_lineno;
   }
 }
 
@@ -2057,7 +2061,7 @@ prohibit_literals(parser_state *p, node *n)
 /* xxx ----------------------------- */
 
 
-#line 2061 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 2065 "mrbgems/mruby-compiler/core/y.tab.c"
 
 # ifndef YY_CAST
 #  ifdef __cplusplus
@@ -2228,7 +2232,7 @@ extern int yydebug;
 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
 union YYSTYPE
 {
-#line 2004 "mrbgems/mruby-compiler/core/parse.y"
+#line 2008 "mrbgems/mruby-compiler/core/parse.y"
 
     node *nd;
     mrb_sym id;
@@ -2236,7 +2240,7 @@ union YYSTYPE
     stack_type stack;
     const struct vtable *vars;
 
-#line 2240 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 2244 "mrbgems/mruby-compiler/core/y.tab.c"
 
 };
 typedef union YYSTYPE YYSTYPE;
@@ -3018,76 +3022,76 @@ static const yytype_uint8 yytranslate[] =
 /* YYRLINE[YYN] -- Source line where rule number YYN was defined.  */
 static const yytype_int16 yyrline[] =
 {
-       0,  2178,  2178,  2178,  2188,  2194,  2198,  2202,  2206,  2212,
-    2214,  2213,  2227,  2253,  2259,  2263,  2267,  2271,  2277,  2277,
-    2281,  2285,  2289,  2293,  2302,  2311,  2315,  2320,  2321,  2325,
-    2329,  2333,  2337,  2340,  2344,  2348,  2352,  2356,  2360,  2365,
-    2369,  2378,  2387,  2396,  2405,  2412,  2413,  2417,  2420,  2421,
-    2425,  2429,  2433,  2437,  2437,  2443,  2443,  2449,  2452,  2462,
-    2461,  2476,  2485,  2486,  2489,  2490,  2497,  2496,  2511,  2515,
-    2520,  2524,  2529,  2533,  2538,  2542,  2546,  2550,  2554,  2560,
-    2564,  2570,  2571,  2577,  2581,  2585,  2589,  2593,  2597,  2601,
-    2605,  2609,  2613,  2619,  2620,  2626,  2630,  2636,  2640,  2646,
-    2650,  2654,  2658,  2662,  2666,  2672,  2678,  2685,  2689,  2693,
-    2697,  2701,  2705,  2711,  2717,  2722,  2728,  2732,  2735,  2739,
-    2743,  2750,  2751,  2752,  2753,  2758,  2765,  2766,  2769,  2773,
-    2773,  2779,  2780,  2781,  2782,  2783,  2784,  2785,  2786,  2787,
-    2788,  2789,  2790,  2791,  2792,  2793,  2794,  2795,  2796,  2797,
-    2798,  2799,  2800,  2801,  2802,  2803,  2804,  2805,  2806,  2807,
-    2808,  2811,  2811,  2811,  2812,  2812,  2813,  2813,  2813,  2814,
-    2814,  2814,  2814,  2815,  2815,  2815,  2816,  2816,  2816,  2817,
-    2817,  2817,  2817,  2818,  2818,  2818,  2818,  2819,  2819,  2819,
-    2819,  2820,  2820,  2820,  2820,  2821,  2821,  2821,  2821,  2822,
-    2822,  2825,  2829,  2833,  2837,  2841,  2845,  2849,  2854,  2859,
-    2864,  2868,  2872,  2876,  2880,  2884,  2888,  2892,  2896,  2900,
-    2904,  2908,  2912,  2916,  2920,  2924,  2928,  2932,  2936,  2940,
-    2944,  2948,  2952,  2956,  2960,  2964,  2968,  2972,  2976,  2980,
-    2984,  2988,  2992,  2996,  3000,  3004,  3008,  3012,  3021,  3030,
-    3039,  3048,  3054,  3055,  3059,  3063,  3069,  3073,  3080,  3084,
-    3093,  3110,  3111,  3114,  3115,  3116,  3120,  3124,  3130,  3135,
-    3139,  3143,  3147,  3153,  3153,  3164,  3168,  3174,  3178,  3184,
-    3187,  3192,  3196,  3200,  3205,  3209,  3215,  3220,  3224,  3230,
-    3231,  3235,  3239,  3240,  3241,  3242,  3243,  3248,  3247,  3259,
-    3263,  3258,  3268,  3268,  3272,  3276,  3280,  3284,  3288,  3292,
-    3296,  3300,  3304,  3308,  3312,  3313,  3319,  3326,  3318,  3339,
-    3347,  3355,  3355,  3355,  3362,  3362,  3362,  3369,  3375,  3379,
-    3388,  3397,  3407,  3409,  3406,  3418,  3416,  3434,  3439,  3432,
-    3456,  3454,  3470,  3480,  3491,  3495,  3499,  3503,  3509,  3516,
-    3517,  3518,  3521,  3522,  3525,  3526,  3534,  3535,  3541,  3545,
-    3548,  3552,  3556,  3560,  3565,  3569,  3573,  3577,  3583,  3582,
-    3592,  3596,  3600,  3604,  3610,  3615,  3620,  3624,  3628,  3632,
-    3636,  3640,  3644,  3648,  3652,  3656,  3660,  3664,  3668,  3672,
-    3676,  3682,  3687,  3694,  3694,  3698,  3703,  3709,  3713,  3719,
-    3720,  3723,  3728,  3731,  3735,  3741,  3745,  3752,  3751,  3768,
-    3773,  3777,  3782,  3789,  3793,  3797,  3801,  3805,  3809,  3813,
-    3817,  3821,  3828,  3827,  3842,  3841,  3857,  3865,  3874,  3879,
-    3883,  3883,  3888,  3888,  3893,  3893,  3903,  3904,  3908,  3912,
-    3916,  3920,  3924,  3929,  3934,  3942,  3946,  3953,  3957,  3963,
-    3964,  3970,  3971,  3977,  3978,  3982,  3986,  3990,  3994,  3998,
-    4002,  4006,  4007,  4008,  4015,  4019,  4026,  4031,  4036,  4041,
-    4046,  4051,  4059,  4063,  4070,  4074,  4082,  4086,  4090,  4097,
-    4101,  4108,  4112,  4116,  4123,  4127,  4136,  4141,  4149,  4153,
-    4158,  4165,  4171,  4178,  4181,  4185,  4186,  4189,  4193,  4196,
-    4200,  4203,  4204,  4205,  4206,  4209,  4210,  4216,  4221,  4226,
-    4231,  4237,  4238,  4244,  4250,  4249,  4261,  4265,  4271,  4275,
-    4281,  4290,  4301,  4304,  4305,  4308,  4314,  4320,  4321,  4324,
-    4331,  4330,  4345,  4349,  4357,  4361,  4373,  4380,  4387,  4388,
-    4389,  4390,  4391,  4395,  4401,  4405,  4413,  4414,  4415,  4419,
-    4425,  4429,  4433,  4437,  4441,  4447,  4451,  4457,  4461,  4465,
-    4469,  4473,  4477,  4481,  4489,  4496,  4502,  4503,  4507,  4511,
-    4510,  4527,  4528,  4531,  4537,  4541,  4547,  4548,  4552,  4556,
-    4562,  4568,  4576,  4582,  4589,  4595,  4602,  4606,  4612,  4616,
-    4622,  4623,  4626,  4630,  4636,  4640,  4644,  4648,  4654,  4658,
-    4663,  4668,  4672,  4676,  4680,  4684,  4688,  4692,  4696,  4700,
-    4704,  4708,  4712,  4716,  4720,  4725,  4731,  4736,  4741,  4746,
-    4751,  4758,  4762,  4769,  4774,  4773,  4785,  4789,  4795,  4803,
-    4811,  4819,  4823,  4829,  4833,  4839,  4840,  4843,  4848,  4855,
-    4856,  4859,  4863,  4867,  4873,  4877,  4881,  4887,  4893,  4893,
-    4900,  4901,  4907,  4911,  4917,  4923,  4928,  4932,  4937,  4942,
-    4958,  4963,  4969,  4970,  4971,  4974,  4975,  4976,  4977,  4980,
-    4981,  4982,  4985,  4986,  4989,  4993,  4999,  5000,  5006,  5007,
-    5010,  5011,  5014,  5017,  5018,  5019,  5022,  5023,  5026,  5031,
-    5034,  5035,  5039
+       0,  2182,  2182,  2182,  2192,  2198,  2202,  2206,  2210,  2216,
+    2218,  2217,  2231,  2257,  2263,  2267,  2271,  2275,  2281,  2281,
+    2285,  2289,  2293,  2297,  2306,  2315,  2319,  2324,  2325,  2329,
+    2333,  2337,  2341,  2344,  2348,  2352,  2356,  2360,  2364,  2369,
+    2373,  2382,  2391,  2400,  2409,  2416,  2417,  2421,  2424,  2425,
+    2429,  2433,  2437,  2441,  2441,  2447,  2447,  2453,  2456,  2466,
+    2465,  2480,  2489,  2490,  2493,  2494,  2501,  2500,  2515,  2519,
+    2524,  2528,  2533,  2537,  2542,  2546,  2550,  2554,  2558,  2564,
+    2568,  2574,  2575,  2581,  2585,  2589,  2593,  2597,  2601,  2605,
+    2609,  2613,  2617,  2623,  2624,  2630,  2634,  2640,  2644,  2650,
+    2654,  2658,  2662,  2666,  2670,  2676,  2682,  2689,  2693,  2697,
+    2701,  2705,  2709,  2715,  2721,  2726,  2732,  2736,  2739,  2743,
+    2747,  2754,  2755,  2756,  2757,  2762,  2769,  2770,  2773,  2777,
+    2777,  2783,  2784,  2785,  2786,  2787,  2788,  2789,  2790,  2791,
+    2792,  2793,  2794,  2795,  2796,  2797,  2798,  2799,  2800,  2801,
+    2802,  2803,  2804,  2805,  2806,  2807,  2808,  2809,  2810,  2811,
+    2812,  2815,  2815,  2815,  2816,  2816,  2817,  2817,  2817,  2818,
+    2818,  2818,  2818,  2819,  2819,  2819,  2820,  2820,  2820,  2821,
+    2821,  2821,  2821,  2822,  2822,  2822,  2822,  2823,  2823,  2823,
+    2823,  2824,  2824,  2824,  2824,  2825,  2825,  2825,  2825,  2826,
+    2826,  2829,  2833,  2837,  2841,  2845,  2849,  2853,  2858,  2863,
+    2868,  2872,  2876,  2880,  2884,  2888,  2892,  2896,  2900,  2904,
+    2908,  2912,  2916,  2920,  2924,  2928,  2932,  2936,  2940,  2944,
+    2948,  2952,  2956,  2960,  2964,  2968,  2972,  2976,  2980,  2984,
+    2988,  2992,  2996,  3000,  3004,  3008,  3012,  3016,  3025,  3034,
+    3043,  3052,  3058,  3059,  3063,  3067,  3073,  3077,  3084,  3088,
+    3097,  3114,  3115,  3118,  3119,  3120,  3124,  3128,  3134,  3139,
+    3143,  3147,  3151,  3157,  3157,  3168,  3172,  3178,  3182,  3188,
+    3191,  3196,  3200,  3204,  3209,  3213,  3219,  3224,  3228,  3234,
+    3235,  3239,  3243,  3244,  3245,  3246,  3247,  3252,  3251,  3263,
+    3267,  3262,  3272,  3272,  3276,  3280,  3284,  3288,  3292,  3296,
+    3300,  3304,  3308,  3312,  3316,  3317,  3323,  3330,  3322,  3343,
+    3351,  3359,  3359,  3359,  3366,  3366,  3366,  3373,  3379,  3383,
+    3392,  3401,  3411,  3413,  3410,  3422,  3420,  3438,  3443,  3436,
+    3460,  3458,  3474,  3484,  3495,  3499,  3503,  3507,  3513,  3520,
+    3521,  3522,  3525,  3526,  3529,  3530,  3538,  3539,  3545,  3549,
+    3552,  3556,  3560,  3564,  3569,  3573,  3577,  3581,  3587,  3586,
+    3596,  3600,  3604,  3608,  3614,  3619,  3624,  3628,  3632,  3636,
+    3640,  3644,  3648,  3652,  3656,  3660,  3664,  3668,  3672,  3676,
+    3680,  3686,  3691,  3698,  3698,  3702,  3707,  3713,  3717,  3723,
+    3724,  3727,  3732,  3735,  3739,  3745,  3749,  3756,  3755,  3772,
+    3777,  3781,  3786,  3793,  3797,  3801,  3805,  3809,  3813,  3817,
+    3821,  3825,  3832,  3831,  3846,  3845,  3861,  3869,  3878,  3883,
+    3887,  3887,  3892,  3892,  3897,  3897,  3907,  3908,  3912,  3916,
+    3920,  3924,  3928,  3933,  3938,  3946,  3950,  3957,  3961,  3967,
+    3968,  3974,  3975,  3981,  3982,  3986,  3990,  3994,  3998,  4002,
+    4006,  4010,  4011,  4012,  4019,  4023,  4030,  4035,  4040,  4045,
+    4050,  4055,  4063,  4067,  4074,  4078,  4086,  4090,  4094,  4101,
+    4105,  4112,  4116,  4120,  4127,  4131,  4140,  4145,  4153,  4157,
+    4162,  4169,  4175,  4182,  4185,  4189,  4190,  4193,  4197,  4200,
+    4204,  4207,  4208,  4209,  4210,  4213,  4214,  4220,  4225,  4230,
+    4235,  4241,  4242,  4248,  4254,  4253,  4265,  4269,  4275,  4279,
+    4285,  4294,  4305,  4308,  4309,  4312,  4318,  4324,  4325,  4328,
+    4335,  4334,  4349,  4353,  4361,  4365,  4377,  4384,  4391,  4392,
+    4393,  4394,  4395,  4399,  4405,  4409,  4417,  4418,  4419,  4423,
+    4429,  4433,  4437,  4441,  4445,  4451,  4455,  4461,  4465,  4469,
+    4473,  4477,  4481,  4485,  4493,  4500,  4506,  4507,  4511,  4515,
+    4514,  4531,  4532,  4535,  4541,  4545,  4551,  4552,  4556,  4560,
+    4566,  4572,  4580,  4586,  4593,  4599,  4606,  4610,  4616,  4620,
+    4626,  4627,  4630,  4634,  4640,  4644,  4648,  4652,  4658,  4662,
+    4667,  4672,  4676,  4680,  4684,  4688,  4692,  4696,  4700,  4704,
+    4708,  4712,  4716,  4720,  4724,  4729,  4735,  4740,  4745,  4750,
+    4755,  4762,  4766,  4773,  4778,  4777,  4789,  4793,  4799,  4807,
+    4815,  4823,  4827,  4833,  4837,  4843,  4844,  4847,  4852,  4859,
+    4860,  4863,  4867,  4871,  4877,  4881,  4885,  4891,  4897,  4897,
+    4904,  4905,  4911,  4915,  4921,  4927,  4932,  4936,  4941,  4946,
+    4962,  4967,  4973,  4974,  4975,  4978,  4979,  4980,  4981,  4984,
+    4985,  4986,  4989,  4990,  4993,  4997,  5003,  5004,  5010,  5011,
+    5014,  5015,  5018,  5021,  5022,  5023,  5026,  5027,  5030,  5035,
+    5038,  5039,  5043
 };
 #endif
 
@@ -7196,7 +7200,7 @@ YYLTYPE yylloc = yyloc_default;
 
 
 
-#line 7200 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7204 "mrbgems/mruby-compiler/core/y.tab.c"
 
   yylsp[0] = yylloc;
   goto yysetstate;
@@ -7409,84 +7413,84 @@ yyreduce:
   switch (yyn)
     {
   case 2: /* $@1: %empty  */
-#line 2178 "mrbgems/mruby-compiler/core/parse.y"
+#line 2182 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lstate = EXPR_BEG;
                       if (!p->locals) p->locals = cons(0,0);
                     }
-#line 7418 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7422 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 3: /* program: $@1 top_compstmt  */
-#line 2183 "mrbgems/mruby-compiler/core/parse.y"
+#line 2187 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->tree = new_scope(p, (yyvsp[0].nd));
                     }
-#line 7426 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7430 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 4: /* top_compstmt: top_stmts opt_terms  */
-#line 2189 "mrbgems/mruby-compiler/core/parse.y"
+#line 2193 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 7434 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7438 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 5: /* top_stmts: none  */
-#line 2195 "mrbgems/mruby-compiler/core/parse.y"
+#line 2199 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_stmts(p, 0);
                     }
-#line 7442 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7446 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 6: /* top_stmts: top_stmt  */
-#line 2199 "mrbgems/mruby-compiler/core/parse.y"
+#line 2203 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_stmts(p, (yyvsp[0].nd));
                     }
-#line 7450 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7454 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 7: /* top_stmts: top_stmts terms top_stmt  */
-#line 2203 "mrbgems/mruby-compiler/core/parse.y"
+#line 2207 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = stmts_push(p, (yyvsp[-2].nd), newline_node((yyvsp[0].nd)));
                     }
-#line 7458 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7462 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 8: /* top_stmts: error top_stmt  */
-#line 2207 "mrbgems/mruby-compiler/core/parse.y"
+#line 2211 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_stmts(p, 0);
                     }
-#line 7466 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7470 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 10: /* @2: %empty  */
-#line 2214 "mrbgems/mruby-compiler/core/parse.y"
+#line 2218 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = local_switch(p);
                       nvars_block(p);
                     }
-#line 7475 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7479 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 11: /* top_stmt: "'BEGIN'" @2 '{' top_compstmt '}'  */
-#line 2219 "mrbgems/mruby-compiler/core/parse.y"
+#line 2223 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[-4]), p, "BEGIN not supported");
                       local_resume(p, (yyvsp[-3].nd));
                       nvars_unnest(p);
                       (yyval.nd) = 0;
                     }
-#line 7486 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7490 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 12: /* bodystmt: compstmt opt_rescue opt_else opt_ensure  */
-#line 2231 "mrbgems/mruby-compiler/core/parse.y"
+#line 2235 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if ((yyvsp[-2].nd)) {
                         (yyval.nd) = new_rescue(p, (yyvsp[-3].nd), (yyvsp[-2].nd), (yyvsp[-1].nd));
@@ -7507,89 +7511,89 @@ yyreduce:
                         }
                       }
                     }
-#line 7511 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7515 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 13: /* compstmt: stmts opt_terms  */
-#line 2254 "mrbgems/mruby-compiler/core/parse.y"
+#line 2258 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 7519 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7523 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 14: /* stmts: none  */
-#line 2260 "mrbgems/mruby-compiler/core/parse.y"
+#line 2264 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_stmts(p, 0);
                     }
-#line 7527 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7531 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 15: /* stmts: stmt  */
-#line 2264 "mrbgems/mruby-compiler/core/parse.y"
+#line 2268 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_stmts(p, (yyvsp[0].nd));
                     }
-#line 7535 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7539 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 16: /* stmts: stmts terms stmt  */
-#line 2268 "mrbgems/mruby-compiler/core/parse.y"
+#line 2272 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = stmts_push(p, (yyvsp[-2].nd), newline_node((yyvsp[0].nd)));
                     }
-#line 7543 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7547 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 17: /* stmts: error stmt  */
-#line 2272 "mrbgems/mruby-compiler/core/parse.y"
+#line 2276 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_stmts(p, (yyvsp[0].nd));
                     }
-#line 7551 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7555 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 18: /* $@3: %empty  */
-#line 2277 "mrbgems/mruby-compiler/core/parse.y"
+#line 2281 "mrbgems/mruby-compiler/core/parse.y"
                                      {p->lstate = EXPR_FNAME;}
-#line 7557 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7561 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 19: /* stmt: "'alias'" fsym $@3 fsym  */
-#line 2278 "mrbgems/mruby-compiler/core/parse.y"
+#line 2282 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_alias(p, (yyvsp[-2].id), (yyvsp[0].id));
                     }
-#line 7565 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7569 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 20: /* stmt: "'undef'" undef_list  */
-#line 2282 "mrbgems/mruby-compiler/core/parse.y"
+#line 2286 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_undef(p, (yyvsp[0].nd));
                     }
-#line 7573 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7577 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 21: /* stmt: stmt "'if' modifier" expr_value  */
-#line 2286 "mrbgems/mruby-compiler/core/parse.y"
+#line 2290 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_if(p, cond((yyvsp[0].nd)), (yyvsp[-2].nd), 0);
                     }
-#line 7581 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7585 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 22: /* stmt: stmt "'unless' modifier" expr_value  */
-#line 2290 "mrbgems/mruby-compiler/core/parse.y"
+#line 2294 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_if(p, cond((yyvsp[0].nd)), 0, (yyvsp[-2].nd));
                     }
-#line 7589 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7593 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 23: /* stmt: stmt "'while' modifier" expr_value  */
-#line 2294 "mrbgems/mruby-compiler/core/parse.y"
+#line 2298 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if ((yyvsp[-2].nd) && node_type_p((yyvsp[-2].nd), NODE_BEGIN)) {
                         (yyval.nd) = new_while_mod(p, cond((yyvsp[0].nd)), (yyvsp[-2].nd));
@@ -7598,11 +7602,11 @@ yyreduce:
                         (yyval.nd) = new_while(p, cond((yyvsp[0].nd)), (yyvsp[-2].nd));
                       }
                     }
-#line 7602 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7606 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 24: /* stmt: stmt "'until' modifier" expr_value  */
-#line 2303 "mrbgems/mruby-compiler/core/parse.y"
+#line 2307 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if ((yyvsp[-2].nd) && node_type_p((yyvsp[-2].nd), NODE_BEGIN)) {
                         (yyval.nd) = new_until_mod(p, cond((yyvsp[0].nd)), (yyvsp[-2].nd));
@@ -7611,117 +7615,117 @@ yyreduce:
                         (yyval.nd) = new_until(p, cond((yyvsp[0].nd)), (yyvsp[-2].nd));
                       }
                     }
-#line 7615 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7619 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 25: /* stmt: stmt "'rescue' modifier" stmt  */
-#line 2312 "mrbgems/mruby-compiler/core/parse.y"
+#line 2316 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_mod_rescue(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7623 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7627 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 26: /* stmt: "'END'" '{' compstmt '}'  */
-#line 2316 "mrbgems/mruby-compiler/core/parse.y"
+#line 2320 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[-3]), p, "END not supported");
                       (yyval.nd) = new_postexe(p, (yyvsp[-1].nd));
                     }
-#line 7632 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7636 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 28: /* stmt: mlhs '=' command_call  */
-#line 2322 "mrbgems/mruby-compiler/core/parse.y"
+#line 2326 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_masgn(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7640 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7644 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 29: /* stmt: lhs '=' mrhs  */
-#line 2326 "mrbgems/mruby-compiler/core/parse.y"
+#line 2330 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_asgn(p, (yyvsp[-2].nd), new_array(p, (yyvsp[0].nd)));
                     }
-#line 7648 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7652 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 30: /* stmt: mlhs '=' arg  */
-#line 2330 "mrbgems/mruby-compiler/core/parse.y"
+#line 2334 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_masgn(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7656 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7660 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 31: /* stmt: mlhs '=' mrhs  */
-#line 2334 "mrbgems/mruby-compiler/core/parse.y"
+#line 2338 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_masgn(p, (yyvsp[-2].nd), new_array(p, (yyvsp[0].nd)));
                     }
-#line 7664 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7668 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 33: /* command_asgn: lhs '=' command_rhs  */
-#line 2341 "mrbgems/mruby-compiler/core/parse.y"
+#line 2345 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_asgn(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7672 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7676 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 34: /* command_asgn: var_lhs tOP_ASGN command_rhs  */
-#line 2345 "mrbgems/mruby-compiler/core/parse.y"
+#line 2349 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_op_asgn(p, (yyvsp[-2].nd), (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 7680 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7684 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 35: /* command_asgn: primary_value '[' opt_call_args ']' tOP_ASGN command_rhs  */
-#line 2349 "mrbgems/mruby-compiler/core/parse.y"
+#line 2353 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_op_asgn(p, new_call(p, (yyvsp[-5].nd), intern_op(aref), (yyvsp[-3].nd), '.'), (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 7688 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7692 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 36: /* command_asgn: primary_value call_op "local variable or method" tOP_ASGN command_rhs  */
-#line 2353 "mrbgems/mruby-compiler/core/parse.y"
-                    {
-                      (yyval.nd) = new_op_asgn(p, new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), 0, (yyvsp[-3].num)), (yyvsp[-1].id), (yyvsp[0].nd));
-                    }
-#line 7696 "mrbgems/mruby-compiler/core/y.tab.c"
-    break;
-
-  case 37: /* command_asgn: primary_value call_op "constant" tOP_ASGN command_rhs  */
 #line 2357 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_op_asgn(p, new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), 0, (yyvsp[-3].num)), (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 7704 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7700 "mrbgems/mruby-compiler/core/y.tab.c"
+    break;
+
+  case 37: /* command_asgn: primary_value call_op "constant" tOP_ASGN command_rhs  */
+#line 2361 "mrbgems/mruby-compiler/core/parse.y"
+                    {
+                      (yyval.nd) = new_op_asgn(p, new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), 0, (yyvsp[-3].num)), (yyvsp[-1].id), (yyvsp[0].nd));
+                    }
+#line 7708 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 38: /* command_asgn: primary_value "::" "constant" tOP_ASGN command_call  */
-#line 2361 "mrbgems/mruby-compiler/core/parse.y"
+#line 2365 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[-4]), p, "constant re-assignment");
                       (yyval.nd) = 0;
                     }
-#line 7713 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7717 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 39: /* command_asgn: primary_value "::" "local variable or method" tOP_ASGN command_rhs  */
-#line 2366 "mrbgems/mruby-compiler/core/parse.y"
+#line 2370 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_op_asgn(p, new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), 0, tCOLON2), (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 7721 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7725 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 40: /* command_asgn: defn_head f_opt_arglist_paren '=' command  */
-#line 2370 "mrbgems/mruby-compiler/core/parse.y"
+#line 2374 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-3].nd);
                       endless_method_name(p, (yyvsp[-3].nd));
@@ -7730,11 +7734,11 @@ yyreduce:
                       nvars_unnest(p);
                       p->in_def--;
                     }
-#line 7734 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7738 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 41: /* command_asgn: defn_head f_opt_arglist_paren '=' command "'rescue' modifier" arg  */
-#line 2379 "mrbgems/mruby-compiler/core/parse.y"
+#line 2383 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-5].nd);
                       endless_method_name(p, (yyvsp[-5].nd));
@@ -7743,11 +7747,11 @@ yyreduce:
                       nvars_unnest(p);
                       p->in_def--;
                     }
-#line 7747 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7751 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 42: /* command_asgn: defs_head f_opt_arglist_paren '=' command  */
-#line 2388 "mrbgems/mruby-compiler/core/parse.y"
+#line 2392 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-3].nd);
                       void_expr_error(p, (yyvsp[0].nd));
@@ -7756,11 +7760,11 @@ yyreduce:
                       p->in_def--;
                       p->in_single--;
                     }
-#line 7760 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7764 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 43: /* command_asgn: defs_head f_opt_arglist_paren '=' command "'rescue' modifier" arg  */
-#line 2397 "mrbgems/mruby-compiler/core/parse.y"
+#line 2401 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-5].nd);
                       void_expr_error(p, (yyvsp[-2].nd));
@@ -7769,111 +7773,111 @@ yyreduce:
                       p->in_def--;
                       p->in_single--;
                     }
-#line 7773 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7777 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 44: /* command_asgn: backref tOP_ASGN command_rhs  */
-#line 2406 "mrbgems/mruby-compiler/core/parse.y"
+#line 2410 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       backref_error(p, (yyvsp[-2].nd));
                       (yyval.nd) = new_stmts(p, 0);
                     }
-#line 7782 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7786 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 46: /* command_rhs: command_call "'rescue' modifier" stmt  */
-#line 2414 "mrbgems/mruby-compiler/core/parse.y"
+#line 2418 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_mod_rescue(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7790 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7794 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 49: /* expr: expr "'and'" expr  */
-#line 2422 "mrbgems/mruby-compiler/core/parse.y"
+#line 2426 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_and(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7798 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7802 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 50: /* expr: expr "'or'" expr  */
-#line 2426 "mrbgems/mruby-compiler/core/parse.y"
+#line 2430 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_or(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 7806 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7810 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 51: /* expr: "'not'" opt_nl expr  */
-#line 2430 "mrbgems/mruby-compiler/core/parse.y"
-                    {
-                      (yyval.nd) = call_uni_op(p, cond((yyvsp[0].nd)), "!");
-                    }
-#line 7814 "mrbgems/mruby-compiler/core/y.tab.c"
-    break;
-
-  case 52: /* expr: '!' command_call  */
 #line 2434 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, cond((yyvsp[0].nd)), "!");
                     }
-#line 7822 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7818 "mrbgems/mruby-compiler/core/y.tab.c"
+    break;
+
+  case 52: /* expr: '!' command_call  */
+#line 2438 "mrbgems/mruby-compiler/core/parse.y"
+                    {
+                      (yyval.nd) = call_uni_op(p, cond((yyvsp[0].nd)), "!");
+                    }
+#line 7826 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 53: /* $@4: %empty  */
-#line 2437 "mrbgems/mruby-compiler/core/parse.y"
+#line 2441 "mrbgems/mruby-compiler/core/parse.y"
                              {p->in_kwarg++;}
-#line 7828 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7832 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 54: /* expr: arg "=>" $@4 p_expr  */
-#line 2438 "mrbgems/mruby-compiler/core/parse.y"
+#line 2442 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* expr => pattern (raises NoMatchingPatternError on failure) */
                       p->in_kwarg--;
                       (yyval.nd) = new_match_pat(p, (yyvsp[-3].nd), (yyvsp[0].nd), TRUE);
                     }
-#line 7838 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7842 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 55: /* $@5: %empty  */
-#line 2443 "mrbgems/mruby-compiler/core/parse.y"
+#line 2447 "mrbgems/mruby-compiler/core/parse.y"
                                  {p->in_kwarg++;}
-#line 7844 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7848 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 56: /* expr: arg "'in'" $@5 p_expr  */
-#line 2444 "mrbgems/mruby-compiler/core/parse.y"
+#line 2448 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* expr in pattern (returns true/false) */
                       p->in_kwarg--;
                       (yyval.nd) = new_match_pat(p, (yyvsp[-3].nd), (yyvsp[0].nd), FALSE);
                     }
-#line 7854 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7858 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 58: /* defn_head: "'def'" fname  */
-#line 2453 "mrbgems/mruby-compiler/core/parse.y"
+#line 2457 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_def(p, (yyvsp[0].id));
                       p->cmdarg_stack = 0;
                       p->in_def++;
                       nvars_block(p);
                     }
-#line 7865 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7869 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 59: /* $@6: %empty  */
-#line 2462 "mrbgems/mruby-compiler/core/parse.y"
+#line 2466 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lstate = EXPR_FNAME;
                     }
-#line 7873 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7877 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 60: /* defs_head: "'def'" singleton dot_or_colon $@6 fname  */
-#line 2466 "mrbgems/mruby-compiler/core/parse.y"
+#line 2470 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_sdef(p, (yyvsp[-3].nd), (yyvsp[0].id));
                       p->cmdarg_stack = 0;
@@ -7882,1054 +7886,1054 @@ yyreduce:
                       nvars_block(p);
                       p->lstate = EXPR_ENDFN; /* force for args */
                     }
-#line 7886 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7890 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 61: /* expr_value: expr  */
-#line 2477 "mrbgems/mruby-compiler/core/parse.y"
+#line 2481 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (!(yyvsp[0].nd)) (yyval.nd) = new_nil(p);
                       else {
                         (yyval.nd) = (yyvsp[0].nd);
                       }
                     }
-#line 7897 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7901 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 65: /* block_command: block_call call_op2 operation2 command_args  */
-#line 2491 "mrbgems/mruby-compiler/core/parse.y"
+#line 2495 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].nd), (yyvsp[-2].num));
                     }
-#line 7905 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7909 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 66: /* $@7: %empty  */
-#line 2497 "mrbgems/mruby-compiler/core/parse.y"
+#line 2501 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_nest(p);
                       nvars_nest(p);
                     }
-#line 7914 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7918 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 67: /* cmd_brace_block: "{" $@7 opt_block_param compstmt '}'  */
-#line 2504 "mrbgems/mruby-compiler/core/parse.y"
+#line 2508 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_block(p, (yyvsp[-2].nd), (yyvsp[-1].nd));
                       local_unnest(p);
                       nvars_unnest(p);
                     }
-#line 7924 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7928 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 68: /* command: operation command_args  */
-#line 2512 "mrbgems/mruby-compiler/core/parse.y"
+#line 2516 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_fcall(p, (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 7932 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7936 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 69: /* command: operation command_args cmd_brace_block  */
-#line 2516 "mrbgems/mruby-compiler/core/parse.y"
+#line 2520 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       args_with_block(p, (yyvsp[-1].nd), (yyvsp[0].nd));
                       (yyval.nd) = new_fcall(p, (yyvsp[-2].id), (yyvsp[-1].nd));
                     }
-#line 7941 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7945 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 70: /* command: primary_value call_op operation2 command_args  */
-#line 2521 "mrbgems/mruby-compiler/core/parse.y"
+#line 2525 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].nd), (yyvsp[-2].num));
                     }
-#line 7949 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7953 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 71: /* command: primary_value call_op operation2 command_args cmd_brace_block  */
-#line 2525 "mrbgems/mruby-compiler/core/parse.y"
+#line 2529 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       args_with_block(p, (yyvsp[-1].nd), (yyvsp[0].nd));
                       (yyval.nd) = new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), (yyvsp[-1].nd), (yyvsp[-3].num));
                    }
-#line 7958 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7962 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 72: /* command: primary_value "::" operation2 command_args  */
-#line 2530 "mrbgems/mruby-compiler/core/parse.y"
+#line 2534 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].nd), tCOLON2);
                     }
-#line 7966 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7970 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 73: /* command: primary_value "::" operation2 command_args cmd_brace_block  */
-#line 2534 "mrbgems/mruby-compiler/core/parse.y"
+#line 2538 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       args_with_block(p, (yyvsp[-1].nd), (yyvsp[0].nd));
                       (yyval.nd) = new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), (yyvsp[-1].nd), tCOLON2);
                     }
-#line 7975 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7979 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 74: /* command: "'super'" command_args  */
-#line 2539 "mrbgems/mruby-compiler/core/parse.y"
+#line 2543 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_super(p, (yyvsp[0].nd));
                     }
-#line 7983 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7987 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 75: /* command: "'yield'" command_args  */
-#line 2543 "mrbgems/mruby-compiler/core/parse.y"
+#line 2547 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_yield(p, (yyvsp[0].nd));
                     }
-#line 7991 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 7995 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 76: /* command: "'return'" call_args  */
-#line 2547 "mrbgems/mruby-compiler/core/parse.y"
+#line 2551 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_return(p, ret_args(p, (yyvsp[0].nd)));
                     }
-#line 7999 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8003 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 77: /* command: "'break'" call_args  */
-#line 2551 "mrbgems/mruby-compiler/core/parse.y"
+#line 2555 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_break(p, ret_args(p, (yyvsp[0].nd)));
                     }
-#line 8007 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8011 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 78: /* command: "'next'" call_args  */
-#line 2555 "mrbgems/mruby-compiler/core/parse.y"
+#line 2559 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_next(p, ret_args(p, (yyvsp[0].nd)));
                     }
-#line 8015 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8019 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 79: /* mlhs: mlhs_basic  */
-#line 2561 "mrbgems/mruby-compiler/core/parse.y"
+#line 2565 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 8023 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8027 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 80: /* mlhs: tLPAREN mlhs_inner rparen  */
-#line 2565 "mrbgems/mruby-compiler/core/parse.y"
+#line 2569 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 8031 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8035 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 82: /* mlhs_inner: tLPAREN mlhs_inner rparen  */
-#line 2572 "mrbgems/mruby-compiler/core/parse.y"
+#line 2576 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 8039 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8043 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 83: /* mlhs_basic: mlhs_list  */
-#line 2578 "mrbgems/mruby-compiler/core/parse.y"
+#line 2582 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 8047 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8051 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 84: /* mlhs_basic: mlhs_list mlhs_item  */
-#line 2582 "mrbgems/mruby-compiler/core/parse.y"
+#line 2586 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1(push((yyvsp[-1].nd),(yyvsp[0].nd)));
                     }
-#line 8055 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8059 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 85: /* mlhs_basic: mlhs_list "*" mlhs_node  */
-#line 2586 "mrbgems/mruby-compiler/core/parse.y"
+#line 2590 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list2((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 8063 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8067 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 86: /* mlhs_basic: mlhs_list "*" mlhs_node ',' mlhs_post  */
-#line 2590 "mrbgems/mruby-compiler/core/parse.y"
+#line 2594 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3((yyvsp[-4].nd), (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 8071 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8075 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 87: /* mlhs_basic: mlhs_list "*"  */
-#line 2594 "mrbgems/mruby-compiler/core/parse.y"
+#line 2598 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list2((yyvsp[-1].nd), new_nil(p));
                     }
-#line 8079 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8083 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 88: /* mlhs_basic: mlhs_list "*" ',' mlhs_post  */
-#line 2598 "mrbgems/mruby-compiler/core/parse.y"
+#line 2602 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3((yyvsp[-3].nd), new_nil(p), (yyvsp[0].nd));
                     }
-#line 8087 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8091 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 89: /* mlhs_basic: "*" mlhs_node  */
-#line 2602 "mrbgems/mruby-compiler/core/parse.y"
+#line 2606 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list2(0, (yyvsp[0].nd));
                     }
-#line 8095 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8099 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 90: /* mlhs_basic: "*" mlhs_node ',' mlhs_post  */
-#line 2606 "mrbgems/mruby-compiler/core/parse.y"
+#line 2610 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3(0, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 8103 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8107 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 91: /* mlhs_basic: "*"  */
-#line 2610 "mrbgems/mruby-compiler/core/parse.y"
+#line 2614 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list2(0, new_nil(p));
                     }
-#line 8111 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8115 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 92: /* mlhs_basic: "*" ',' mlhs_post  */
-#line 2614 "mrbgems/mruby-compiler/core/parse.y"
+#line 2618 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3(0, new_nil(p), (yyvsp[0].nd));
                     }
-#line 8119 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8123 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 94: /* mlhs_item: tLPAREN mlhs_inner rparen  */
-#line 2621 "mrbgems/mruby-compiler/core/parse.y"
+#line 2625 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_masgn(p, (yyvsp[-1].nd), NULL);
                     }
-#line 8127 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8131 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 95: /* mlhs_list: mlhs_item ','  */
-#line 2627 "mrbgems/mruby-compiler/core/parse.y"
+#line 2631 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[-1].nd));
                     }
-#line 8135 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8139 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 96: /* mlhs_list: mlhs_list mlhs_item ','  */
-#line 2631 "mrbgems/mruby-compiler/core/parse.y"
+#line 2635 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[-1].nd));
                     }
-#line 8143 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8147 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 97: /* mlhs_post: mlhs_item  */
-#line 2637 "mrbgems/mruby-compiler/core/parse.y"
+#line 2641 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 8151 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8155 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 98: /* mlhs_post: mlhs_list mlhs_item  */
-#line 2641 "mrbgems/mruby-compiler/core/parse.y"
+#line 2645 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 8159 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8163 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 99: /* mlhs_node: variable  */
-#line 2647 "mrbgems/mruby-compiler/core/parse.y"
+#line 2651 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       assignable(p, (yyvsp[0].nd));
                     }
-#line 8167 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8171 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 100: /* mlhs_node: primary_value '[' opt_call_args ']'  */
-#line 2651 "mrbgems/mruby-compiler/core/parse.y"
+#line 2655 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), intern_op(aref), (yyvsp[-1].nd), '.');
                     }
-#line 8175 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8179 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 101: /* mlhs_node: primary_value call_op "local variable or method"  */
-#line 2655 "mrbgems/mruby-compiler/core/parse.y"
+#line 2659 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, (yyvsp[-1].num));
                     }
-#line 8183 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8187 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 102: /* mlhs_node: primary_value "::" "local variable or method"  */
-#line 2659 "mrbgems/mruby-compiler/core/parse.y"
+#line 2663 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, tCOLON2);
                     }
-#line 8191 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8195 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 103: /* mlhs_node: primary_value call_op "constant"  */
-#line 2663 "mrbgems/mruby-compiler/core/parse.y"
+#line 2667 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, (yyvsp[-1].num));
                     }
-#line 8199 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8203 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 104: /* mlhs_node: primary_value "::" "constant"  */
-#line 2667 "mrbgems/mruby-compiler/core/parse.y"
+#line 2671 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (p->in_def || p->in_single)
                         yyerror(&(yylsp[-2]), p, "dynamic constant assignment");
                       (yyval.nd) = new_colon2(p, (yyvsp[-2].nd), (yyvsp[0].id));
                     }
-#line 8209 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8213 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 105: /* mlhs_node: tCOLON3 "constant"  */
-#line 2673 "mrbgems/mruby-compiler/core/parse.y"
+#line 2677 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (p->in_def || p->in_single)
                         yyerror(&(yylsp[-1]), p, "dynamic constant assignment");
                       (yyval.nd) = new_colon3(p, (yyvsp[0].id));
                     }
-#line 8219 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8223 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 106: /* mlhs_node: backref  */
-#line 2679 "mrbgems/mruby-compiler/core/parse.y"
+#line 2683 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       backref_error(p, (yyvsp[0].nd));
                       (yyval.nd) = 0;
                     }
-#line 8228 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8232 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 107: /* lhs: variable  */
-#line 2686 "mrbgems/mruby-compiler/core/parse.y"
+#line 2690 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       assignable(p, (yyvsp[0].nd));
                     }
-#line 8236 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8240 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 108: /* lhs: primary_value '[' opt_call_args ']'  */
-#line 2690 "mrbgems/mruby-compiler/core/parse.y"
+#line 2694 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), intern_op(aref), (yyvsp[-1].nd), '.');
                     }
-#line 8244 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8248 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 109: /* lhs: primary_value call_op "local variable or method"  */
-#line 2694 "mrbgems/mruby-compiler/core/parse.y"
+#line 2698 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, (yyvsp[-1].num));
                     }
-#line 8252 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8256 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 110: /* lhs: primary_value "::" "local variable or method"  */
-#line 2698 "mrbgems/mruby-compiler/core/parse.y"
+#line 2702 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, tCOLON2);
                     }
-#line 8260 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8264 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 111: /* lhs: primary_value call_op "constant"  */
-#line 2702 "mrbgems/mruby-compiler/core/parse.y"
+#line 2706 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, (yyvsp[-1].num));
                     }
-#line 8268 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8272 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 112: /* lhs: primary_value "::" "constant"  */
-#line 2706 "mrbgems/mruby-compiler/core/parse.y"
+#line 2710 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (p->in_def || p->in_single)
                         yyerror(&(yylsp[-2]), p, "dynamic constant assignment");
                       (yyval.nd) = new_colon2(p, (yyvsp[-2].nd), (yyvsp[0].id));
                     }
-#line 8278 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8282 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 113: /* lhs: tCOLON3 "constant"  */
-#line 2712 "mrbgems/mruby-compiler/core/parse.y"
+#line 2716 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (p->in_def || p->in_single)
                         yyerror(&(yylsp[-1]), p, "dynamic constant assignment");
                       (yyval.nd) = new_colon3(p, (yyvsp[0].id));
                     }
-#line 8288 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8292 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 114: /* lhs: backref  */
-#line 2718 "mrbgems/mruby-compiler/core/parse.y"
+#line 2722 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       backref_error(p, (yyvsp[0].nd));
                       (yyval.nd) = 0;
                     }
-#line 8297 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8301 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 115: /* lhs: "numbered parameter"  */
-#line 2723 "mrbgems/mruby-compiler/core/parse.y"
+#line 2727 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[0]), p, "can't assign to numbered parameter");
                     }
-#line 8305 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8309 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 116: /* cname: "local variable or method"  */
-#line 2729 "mrbgems/mruby-compiler/core/parse.y"
+#line 2733 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[0]), p, "class/module name must be CONSTANT");
                     }
-#line 8313 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8317 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 118: /* cpath: tCOLON3 cname  */
-#line 2736 "mrbgems/mruby-compiler/core/parse.y"
+#line 2740 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(int_to_node(1), sym_to_node((yyvsp[0].id)));
                     }
-#line 8321 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8325 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 119: /* cpath: cname  */
-#line 2740 "mrbgems/mruby-compiler/core/parse.y"
+#line 2744 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(int_to_node(0), sym_to_node((yyvsp[0].id)));
                     }
-#line 8329 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8333 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 120: /* cpath: primary_value "::" cname  */
-#line 2744 "mrbgems/mruby-compiler/core/parse.y"
+#line 2748 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[-2].nd));
                       (yyval.nd) = cons((yyvsp[-2].nd), sym_to_node((yyvsp[0].id)));
                     }
-#line 8338 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8342 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 124: /* fname: op  */
-#line 2754 "mrbgems/mruby-compiler/core/parse.y"
+#line 2758 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lstate = EXPR_ENDFN;
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 8347 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8351 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 125: /* fname: reswords  */
-#line 2759 "mrbgems/mruby-compiler/core/parse.y"
+#line 2763 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lstate = EXPR_ENDFN;
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 8356 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8360 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 128: /* undef_list: fsym  */
-#line 2770 "mrbgems/mruby-compiler/core/parse.y"
+#line 2774 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(sym_to_node((yyvsp[0].id)), 0);
                     }
-#line 8364 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8368 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 129: /* $@8: %empty  */
-#line 2773 "mrbgems/mruby-compiler/core/parse.y"
+#line 2777 "mrbgems/mruby-compiler/core/parse.y"
                                  {p->lstate = EXPR_FNAME;}
-#line 8370 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8374 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 130: /* undef_list: undef_list ',' $@8 fsym  */
-#line 2774 "mrbgems/mruby-compiler/core/parse.y"
+#line 2778 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-3].nd), sym_to_node((yyvsp[0].id)));
                     }
-#line 8378 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8382 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 131: /* op: '|'  */
-#line 2779 "mrbgems/mruby-compiler/core/parse.y"
+#line 2783 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(or);     }
-#line 8384 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8388 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 132: /* op: '^'  */
-#line 2780 "mrbgems/mruby-compiler/core/parse.y"
+#line 2784 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(xor);    }
-#line 8390 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8394 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 133: /* op: '&'  */
-#line 2781 "mrbgems/mruby-compiler/core/parse.y"
+#line 2785 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(and);    }
-#line 8396 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8400 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 134: /* op: "<=>"  */
-#line 2782 "mrbgems/mruby-compiler/core/parse.y"
+#line 2786 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(cmp);    }
-#line 8402 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8406 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 135: /* op: "=="  */
-#line 2783 "mrbgems/mruby-compiler/core/parse.y"
+#line 2787 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(eq);     }
-#line 8408 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8412 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 136: /* op: "==="  */
-#line 2784 "mrbgems/mruby-compiler/core/parse.y"
+#line 2788 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(eqq);    }
-#line 8414 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8418 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 137: /* op: "=~"  */
-#line 2785 "mrbgems/mruby-compiler/core/parse.y"
+#line 2789 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(match);  }
-#line 8420 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8424 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 138: /* op: "!~"  */
-#line 2786 "mrbgems/mruby-compiler/core/parse.y"
+#line 2790 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(nmatch); }
-#line 8426 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8430 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 139: /* op: '>'  */
-#line 2787 "mrbgems/mruby-compiler/core/parse.y"
+#line 2791 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(gt);     }
-#line 8432 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8436 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 140: /* op: ">="  */
-#line 2788 "mrbgems/mruby-compiler/core/parse.y"
+#line 2792 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(ge);     }
-#line 8438 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8442 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 141: /* op: '<'  */
-#line 2789 "mrbgems/mruby-compiler/core/parse.y"
+#line 2793 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(lt);     }
-#line 8444 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8448 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 142: /* op: "<="  */
-#line 2790 "mrbgems/mruby-compiler/core/parse.y"
+#line 2794 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(le);     }
-#line 8450 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8454 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 143: /* op: "!="  */
-#line 2791 "mrbgems/mruby-compiler/core/parse.y"
+#line 2795 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(neq);    }
-#line 8456 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8460 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 144: /* op: "<<"  */
-#line 2792 "mrbgems/mruby-compiler/core/parse.y"
+#line 2796 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(lshift); }
-#line 8462 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8466 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 145: /* op: ">>"  */
-#line 2793 "mrbgems/mruby-compiler/core/parse.y"
+#line 2797 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(rshift); }
-#line 8468 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8472 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 146: /* op: '+'  */
-#line 2794 "mrbgems/mruby-compiler/core/parse.y"
+#line 2798 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(add);    }
-#line 8474 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8478 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 147: /* op: '-'  */
-#line 2795 "mrbgems/mruby-compiler/core/parse.y"
+#line 2799 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(sub);    }
-#line 8480 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8484 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 148: /* op: '*'  */
-#line 2796 "mrbgems/mruby-compiler/core/parse.y"
+#line 2800 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(mul);    }
-#line 8486 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8490 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 149: /* op: "*"  */
-#line 2797 "mrbgems/mruby-compiler/core/parse.y"
+#line 2801 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(mul);    }
-#line 8492 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8496 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 150: /* op: '/'  */
-#line 2798 "mrbgems/mruby-compiler/core/parse.y"
+#line 2802 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(div);    }
-#line 8498 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8502 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 151: /* op: '%'  */
-#line 2799 "mrbgems/mruby-compiler/core/parse.y"
+#line 2803 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(mod);    }
-#line 8504 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8508 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 152: /* op: tPOW  */
-#line 2800 "mrbgems/mruby-compiler/core/parse.y"
+#line 2804 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(pow);    }
-#line 8510 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8514 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 153: /* op: "**"  */
-#line 2801 "mrbgems/mruby-compiler/core/parse.y"
+#line 2805 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(pow);    }
-#line 8516 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8520 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 154: /* op: '!'  */
-#line 2802 "mrbgems/mruby-compiler/core/parse.y"
+#line 2806 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(not);    }
-#line 8522 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8526 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 155: /* op: '~'  */
-#line 2803 "mrbgems/mruby-compiler/core/parse.y"
+#line 2807 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(neg);    }
-#line 8528 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8532 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 156: /* op: "unary plus"  */
-#line 2804 "mrbgems/mruby-compiler/core/parse.y"
+#line 2808 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(plus);   }
-#line 8534 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8538 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 157: /* op: "unary minus"  */
-#line 2805 "mrbgems/mruby-compiler/core/parse.y"
+#line 2809 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(minus);  }
-#line 8540 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8544 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 158: /* op: tAREF  */
-#line 2806 "mrbgems/mruby-compiler/core/parse.y"
+#line 2810 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(aref);   }
-#line 8546 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8550 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 159: /* op: tASET  */
-#line 2807 "mrbgems/mruby-compiler/core/parse.y"
+#line 2811 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(aset);   }
-#line 8552 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8556 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 160: /* op: '`'  */
-#line 2808 "mrbgems/mruby-compiler/core/parse.y"
+#line 2812 "mrbgems/mruby-compiler/core/parse.y"
                                 { (yyval.id) = intern_op(tick);   }
-#line 8558 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8562 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 201: /* arg: lhs '=' arg_rhs  */
-#line 2826 "mrbgems/mruby-compiler/core/parse.y"
+#line 2830 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_asgn(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 8566 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8570 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 202: /* arg: var_lhs tOP_ASGN arg_rhs  */
-#line 2830 "mrbgems/mruby-compiler/core/parse.y"
+#line 2834 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_op_asgn(p, (yyvsp[-2].nd), (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 8574 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8578 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 203: /* arg: primary_value '[' opt_call_args ']' tOP_ASGN arg_rhs  */
-#line 2834 "mrbgems/mruby-compiler/core/parse.y"
+#line 2838 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_op_asgn(p, new_call(p, (yyvsp[-5].nd), intern_op(aref), (yyvsp[-3].nd), '.'), (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 8582 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8586 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 204: /* arg: primary_value call_op "local variable or method" tOP_ASGN arg_rhs  */
-#line 2838 "mrbgems/mruby-compiler/core/parse.y"
-                    {
-                      (yyval.nd) = new_op_asgn(p, new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), 0, (yyvsp[-3].num)), (yyvsp[-1].id), (yyvsp[0].nd));
-                    }
-#line 8590 "mrbgems/mruby-compiler/core/y.tab.c"
-    break;
-
-  case 205: /* arg: primary_value call_op "constant" tOP_ASGN arg_rhs  */
 #line 2842 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_op_asgn(p, new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), 0, (yyvsp[-3].num)), (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 8598 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8594 "mrbgems/mruby-compiler/core/y.tab.c"
+    break;
+
+  case 205: /* arg: primary_value call_op "constant" tOP_ASGN arg_rhs  */
+#line 2846 "mrbgems/mruby-compiler/core/parse.y"
+                    {
+                      (yyval.nd) = new_op_asgn(p, new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), 0, (yyvsp[-3].num)), (yyvsp[-1].id), (yyvsp[0].nd));
+                    }
+#line 8602 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 206: /* arg: primary_value "::" "local variable or method" tOP_ASGN arg_rhs  */
-#line 2846 "mrbgems/mruby-compiler/core/parse.y"
+#line 2850 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_op_asgn(p, new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), 0, tCOLON2), (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 8606 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8610 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 207: /* arg: primary_value "::" "constant" tOP_ASGN arg_rhs  */
-#line 2850 "mrbgems/mruby-compiler/core/parse.y"
+#line 2854 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[-4]), p, "constant re-assignment");
                       (yyval.nd) = new_stmts(p, 0);
                     }
-#line 8615 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8619 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 208: /* arg: tCOLON3 "constant" tOP_ASGN arg_rhs  */
-#line 2855 "mrbgems/mruby-compiler/core/parse.y"
+#line 2859 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[-3]), p, "constant re-assignment");
                       (yyval.nd) = new_stmts(p, 0);
                     }
-#line 8624 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8628 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 209: /* arg: backref tOP_ASGN arg_rhs  */
-#line 2860 "mrbgems/mruby-compiler/core/parse.y"
+#line 2864 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       backref_error(p, (yyvsp[-2].nd));
                       (yyval.nd) = new_stmts(p, 0);
                     }
-#line 8633 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8637 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 210: /* arg: arg ".." arg  */
-#line 2865 "mrbgems/mruby-compiler/core/parse.y"
+#line 2869 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dot2(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 8641 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8645 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 211: /* arg: arg ".."  */
-#line 2869 "mrbgems/mruby-compiler/core/parse.y"
+#line 2873 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dot2(p, (yyvsp[-1].nd), new_nil(p));
                     }
-#line 8649 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8653 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 212: /* arg: tBDOT2 arg  */
-#line 2873 "mrbgems/mruby-compiler/core/parse.y"
+#line 2877 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dot2(p, new_nil(p), (yyvsp[0].nd));
                     }
-#line 8657 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8661 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 213: /* arg: arg "..." arg  */
-#line 2877 "mrbgems/mruby-compiler/core/parse.y"
+#line 2881 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dot3(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 8665 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8669 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 214: /* arg: arg "..."  */
-#line 2881 "mrbgems/mruby-compiler/core/parse.y"
+#line 2885 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dot3(p, (yyvsp[-1].nd), new_nil(p));
                     }
-#line 8673 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8677 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 215: /* arg: tBDOT3 arg  */
-#line 2885 "mrbgems/mruby-compiler/core/parse.y"
+#line 2889 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_dot3(p, new_nil(p), (yyvsp[0].nd));
                     }
-#line 8681 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8685 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 216: /* arg: arg '+' arg  */
-#line 2889 "mrbgems/mruby-compiler/core/parse.y"
+#line 2893 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "+", (yyvsp[0].nd));
                     }
-#line 8689 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8693 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 217: /* arg: arg '-' arg  */
-#line 2893 "mrbgems/mruby-compiler/core/parse.y"
+#line 2897 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "-", (yyvsp[0].nd));
                     }
-#line 8697 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8701 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 218: /* arg: arg '*' arg  */
-#line 2897 "mrbgems/mruby-compiler/core/parse.y"
+#line 2901 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "*", (yyvsp[0].nd));
                     }
-#line 8705 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8709 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 219: /* arg: arg '/' arg  */
-#line 2901 "mrbgems/mruby-compiler/core/parse.y"
+#line 2905 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "/", (yyvsp[0].nd));
                     }
-#line 8713 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8717 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 220: /* arg: arg '%' arg  */
-#line 2905 "mrbgems/mruby-compiler/core/parse.y"
+#line 2909 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "%", (yyvsp[0].nd));
                     }
-#line 8721 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8725 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 221: /* arg: arg tPOW arg  */
-#line 2909 "mrbgems/mruby-compiler/core/parse.y"
+#line 2913 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "**", (yyvsp[0].nd));
                     }
-#line 8729 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8733 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 222: /* arg: tUMINUS_NUM "integer literal" tPOW arg  */
-#line 2913 "mrbgems/mruby-compiler/core/parse.y"
-                    {
-                      (yyval.nd) = new_negate(p, call_bin_op(p, (yyvsp[-2].nd), "**", (yyvsp[0].nd)));
-                    }
-#line 8737 "mrbgems/mruby-compiler/core/y.tab.c"
-    break;
-
-  case 223: /* arg: tUMINUS_NUM "float literal" tPOW arg  */
 #line 2917 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_negate(p, call_bin_op(p, (yyvsp[-2].nd), "**", (yyvsp[0].nd)));
                     }
-#line 8745 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8741 "mrbgems/mruby-compiler/core/y.tab.c"
+    break;
+
+  case 223: /* arg: tUMINUS_NUM "float literal" tPOW arg  */
+#line 2921 "mrbgems/mruby-compiler/core/parse.y"
+                    {
+                      (yyval.nd) = new_negate(p, call_bin_op(p, (yyvsp[-2].nd), "**", (yyvsp[0].nd)));
+                    }
+#line 8749 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 224: /* arg: "unary plus" arg  */
-#line 2921 "mrbgems/mruby-compiler/core/parse.y"
+#line 2925 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, (yyvsp[0].nd), "+@");
                     }
-#line 8753 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8757 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 225: /* arg: "unary minus" arg  */
-#line 2925 "mrbgems/mruby-compiler/core/parse.y"
+#line 2929 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_negate(p, (yyvsp[0].nd));
                     }
-#line 8761 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8765 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 226: /* arg: arg '|' arg  */
-#line 2929 "mrbgems/mruby-compiler/core/parse.y"
+#line 2933 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "|", (yyvsp[0].nd));
                     }
-#line 8769 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8773 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 227: /* arg: arg '^' arg  */
-#line 2933 "mrbgems/mruby-compiler/core/parse.y"
+#line 2937 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "^", (yyvsp[0].nd));
                     }
-#line 8777 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8781 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 228: /* arg: arg '&' arg  */
-#line 2937 "mrbgems/mruby-compiler/core/parse.y"
+#line 2941 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "&", (yyvsp[0].nd));
                     }
-#line 8785 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8789 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 229: /* arg: arg "<=>" arg  */
-#line 2941 "mrbgems/mruby-compiler/core/parse.y"
+#line 2945 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "<=>", (yyvsp[0].nd));
                     }
-#line 8793 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8797 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 230: /* arg: arg '>' arg  */
-#line 2945 "mrbgems/mruby-compiler/core/parse.y"
+#line 2949 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), ">", (yyvsp[0].nd));
                     }
-#line 8801 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8805 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 231: /* arg: arg ">=" arg  */
-#line 2949 "mrbgems/mruby-compiler/core/parse.y"
+#line 2953 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), ">=", (yyvsp[0].nd));
                     }
-#line 8809 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8813 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 232: /* arg: arg '<' arg  */
-#line 2953 "mrbgems/mruby-compiler/core/parse.y"
+#line 2957 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "<", (yyvsp[0].nd));
                     }
-#line 8817 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8821 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 233: /* arg: arg "<=" arg  */
-#line 2957 "mrbgems/mruby-compiler/core/parse.y"
+#line 2961 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "<=", (yyvsp[0].nd));
                     }
-#line 8825 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8829 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 234: /* arg: arg "==" arg  */
-#line 2961 "mrbgems/mruby-compiler/core/parse.y"
+#line 2965 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "==", (yyvsp[0].nd));
                     }
-#line 8833 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8837 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 235: /* arg: arg "===" arg  */
-#line 2965 "mrbgems/mruby-compiler/core/parse.y"
+#line 2969 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "===", (yyvsp[0].nd));
                     }
-#line 8841 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8845 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 236: /* arg: arg "!=" arg  */
-#line 2969 "mrbgems/mruby-compiler/core/parse.y"
+#line 2973 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "!=", (yyvsp[0].nd));
                     }
-#line 8849 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8853 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 237: /* arg: arg "=~" arg  */
-#line 2973 "mrbgems/mruby-compiler/core/parse.y"
+#line 2977 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "=~", (yyvsp[0].nd));
                     }
-#line 8857 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8861 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 238: /* arg: arg "!~" arg  */
-#line 2977 "mrbgems/mruby-compiler/core/parse.y"
+#line 2981 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "!~", (yyvsp[0].nd));
                     }
-#line 8865 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8869 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 239: /* arg: '!' arg  */
-#line 2981 "mrbgems/mruby-compiler/core/parse.y"
+#line 2985 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, cond((yyvsp[0].nd)), "!");
                     }
-#line 8873 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8877 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 240: /* arg: '~' arg  */
-#line 2985 "mrbgems/mruby-compiler/core/parse.y"
+#line 2989 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, cond((yyvsp[0].nd)), "~");
                     }
-#line 8881 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8885 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 241: /* arg: arg "<<" arg  */
-#line 2989 "mrbgems/mruby-compiler/core/parse.y"
+#line 2993 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), "<<", (yyvsp[0].nd));
                     }
-#line 8889 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8893 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 242: /* arg: arg ">>" arg  */
-#line 2993 "mrbgems/mruby-compiler/core/parse.y"
+#line 2997 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_bin_op(p, (yyvsp[-2].nd), ">>", (yyvsp[0].nd));
                     }
-#line 8897 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8901 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 243: /* arg: arg "&&" arg  */
-#line 2997 "mrbgems/mruby-compiler/core/parse.y"
+#line 3001 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_and(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 8905 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8909 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 244: /* arg: arg "||" arg  */
-#line 3001 "mrbgems/mruby-compiler/core/parse.y"
+#line 3005 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_or(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 8913 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8917 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 245: /* arg: arg '?' arg opt_nl ':' arg  */
-#line 3005 "mrbgems/mruby-compiler/core/parse.y"
-                    {
-                      (yyval.nd) = new_if(p, cond((yyvsp[-5].nd)), (yyvsp[-3].nd), (yyvsp[0].nd));
-                    }
-#line 8921 "mrbgems/mruby-compiler/core/y.tab.c"
-    break;
-
-  case 246: /* arg: arg '?' arg opt_nl "label" arg  */
 #line 3009 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_if(p, cond((yyvsp[-5].nd)), (yyvsp[-3].nd), (yyvsp[0].nd));
                     }
-#line 8929 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8925 "mrbgems/mruby-compiler/core/y.tab.c"
+    break;
+
+  case 246: /* arg: arg '?' arg opt_nl "label" arg  */
+#line 3013 "mrbgems/mruby-compiler/core/parse.y"
+                    {
+                      (yyval.nd) = new_if(p, cond((yyvsp[-5].nd)), (yyvsp[-3].nd), (yyvsp[0].nd));
+                    }
+#line 8933 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 247: /* arg: defn_head f_opt_arglist_paren '=' arg  */
-#line 3013 "mrbgems/mruby-compiler/core/parse.y"
+#line 3017 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-3].nd);
                       endless_method_name(p, (yyvsp[-3].nd));
@@ -8938,11 +8942,11 @@ yyreduce:
                       nvars_unnest(p);
                       p->in_def--;
                     }
-#line 8942 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8946 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 248: /* arg: defn_head f_opt_arglist_paren '=' arg "'rescue' modifier" arg  */
-#line 3022 "mrbgems/mruby-compiler/core/parse.y"
+#line 3026 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-5].nd);
                       endless_method_name(p, (yyvsp[-5].nd));
@@ -8951,11 +8955,11 @@ yyreduce:
                       nvars_unnest(p);
                       p->in_def--;
                     }
-#line 8955 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8959 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 249: /* arg: defs_head f_opt_arglist_paren '=' arg  */
-#line 3031 "mrbgems/mruby-compiler/core/parse.y"
+#line 3035 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-3].nd);
                       void_expr_error(p, (yyvsp[0].nd));
@@ -8964,11 +8968,11 @@ yyreduce:
                       p->in_def--;
                       p->in_single--;
                     }
-#line 8968 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8972 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 250: /* arg: defs_head f_opt_arglist_paren '=' arg "'rescue' modifier" arg  */
-#line 3040 "mrbgems/mruby-compiler/core/parse.y"
+#line 3044 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-5].nd);
                       void_expr_error(p, (yyvsp[-2].nd));
@@ -8977,68 +8981,68 @@ yyreduce:
                       p->in_def--;
                       p->in_single--;
                     }
-#line 8981 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8985 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 251: /* arg: primary  */
-#line 3049 "mrbgems/mruby-compiler/core/parse.y"
+#line 3053 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 8989 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 8993 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 253: /* aref_args: args trailer  */
-#line 3056 "mrbgems/mruby-compiler/core/parse.y"
+#line 3060 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 8997 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9001 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 254: /* aref_args: args comma assocs trailer  */
-#line 3060 "mrbgems/mruby-compiler/core/parse.y"
+#line 3064 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-3].nd), new_hash(p, (yyvsp[-1].nd)));
                     }
-#line 9005 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9009 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 255: /* aref_args: assocs trailer  */
-#line 3064 "mrbgems/mruby-compiler/core/parse.y"
+#line 3068 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(new_hash(p, (yyvsp[-1].nd)), 0);
                     }
-#line 9013 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9017 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 256: /* arg_rhs: arg  */
-#line 3070 "mrbgems/mruby-compiler/core/parse.y"
+#line 3074 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 9021 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9025 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 257: /* arg_rhs: arg "'rescue' modifier" arg  */
-#line 3074 "mrbgems/mruby-compiler/core/parse.y"
+#line 3078 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[-2].nd));
                       (yyval.nd) = new_mod_rescue(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 9030 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9034 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 258: /* paren_args: '(' opt_call_args ')'  */
-#line 3081 "mrbgems/mruby-compiler/core/parse.y"
+#line 3085 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 9038 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9042 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 259: /* paren_args: '(' args comma tBDOT3 rparen  */
-#line 3085 "mrbgems/mruby-compiler/core/parse.y"
+#line 3089 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       mrb_sym r = intern_op(mul);
                       mrb_sym k = intern_op(pow);
@@ -9047,11 +9051,11 @@ yyreduce:
                                         list1(cons(new_kw_rest_args(p, 0), new_lvar(p, k))),
                                         new_block_arg(p, new_lvar(p, b)));
                     }
-#line 9051 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9055 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 260: /* paren_args: '(' tBDOT3 rparen  */
-#line 3094 "mrbgems/mruby-compiler/core/parse.y"
+#line 3098 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       mrb_sym r = intern_op(mul);
                       mrb_sym k = intern_op(pow);
@@ -9066,390 +9070,390 @@ yyreduce:
                         (yyval.nd) = 0;
                       }
                     }
-#line 9070 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9074 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 265: /* opt_call_args: args comma  */
-#line 3117 "mrbgems/mruby-compiler/core/parse.y"
+#line 3121 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_callargs(p,(yyvsp[-1].nd),0,0);
                     }
-#line 9078 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9082 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 266: /* opt_call_args: args comma assocs comma  */
-#line 3121 "mrbgems/mruby-compiler/core/parse.y"
+#line 3125 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_callargs(p,(yyvsp[-3].nd),(yyvsp[-1].nd),0);
                     }
-#line 9086 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9090 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 267: /* opt_call_args: assocs comma  */
-#line 3125 "mrbgems/mruby-compiler/core/parse.y"
+#line 3129 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_callargs(p,0,(yyvsp[-1].nd),0);
                     }
-#line 9094 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9098 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 268: /* call_args: command  */
-#line 3131 "mrbgems/mruby-compiler/core/parse.y"
+#line 3135 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = new_callargs(p, list1((yyvsp[0].nd)), 0, 0);
                     }
-#line 9103 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9107 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 269: /* call_args: args opt_block_arg  */
-#line 3136 "mrbgems/mruby-compiler/core/parse.y"
+#line 3140 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_callargs(p, (yyvsp[-1].nd), 0, (yyvsp[0].nd));
                     }
-#line 9111 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9115 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 270: /* call_args: assocs opt_block_arg  */
-#line 3140 "mrbgems/mruby-compiler/core/parse.y"
+#line 3144 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_callargs(p, 0, (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 9119 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9123 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 271: /* call_args: args comma assocs opt_block_arg  */
-#line 3144 "mrbgems/mruby-compiler/core/parse.y"
+#line 3148 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_callargs(p, (yyvsp[-3].nd), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 9127 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9131 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 272: /* call_args: block_arg  */
-#line 3148 "mrbgems/mruby-compiler/core/parse.y"
+#line 3152 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_callargs(p, 0, 0, (yyvsp[0].nd));
                     }
-#line 9135 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9139 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 273: /* @9: %empty  */
-#line 3153 "mrbgems/mruby-compiler/core/parse.y"
+#line 3157 "mrbgems/mruby-compiler/core/parse.y"
                    {
                       (yyval.stack) = p->cmdarg_stack;
                       CMDARG_PUSH(1);
                     }
-#line 9144 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9148 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 274: /* command_args: @9 call_args  */
-#line 3158 "mrbgems/mruby-compiler/core/parse.y"
+#line 3162 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->cmdarg_stack = (yyvsp[-1].stack);
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 9153 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9157 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 275: /* block_arg: "&" arg  */
-#line 3165 "mrbgems/mruby-compiler/core/parse.y"
+#line 3169 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_block_arg(p, (yyvsp[0].nd));
                     }
-#line 9161 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9165 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 276: /* block_arg: "&"  */
-#line 3169 "mrbgems/mruby-compiler/core/parse.y"
+#line 3173 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_block_arg(p, 0);
                     }
-#line 9169 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9173 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 277: /* opt_block_arg: comma block_arg  */
-#line 3175 "mrbgems/mruby-compiler/core/parse.y"
+#line 3179 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 9177 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9181 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 278: /* opt_block_arg: none  */
-#line 3179 "mrbgems/mruby-compiler/core/parse.y"
+#line 3183 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = 0;
                     }
-#line 9185 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9189 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 280: /* args: arg  */
-#line 3188 "mrbgems/mruby-compiler/core/parse.y"
+#line 3192 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 9194 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9198 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 281: /* args: "*"  */
-#line 3193 "mrbgems/mruby-compiler/core/parse.y"
+#line 3197 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1(new_splat(p, new_lvar(p, intern_op(mul))));
                     }
-#line 9202 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9206 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 282: /* args: "*" arg  */
-#line 3197 "mrbgems/mruby-compiler/core/parse.y"
+#line 3201 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1(new_splat(p, (yyvsp[0].nd)));
                     }
-#line 9210 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9214 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 283: /* args: args comma arg  */
-#line 3201 "mrbgems/mruby-compiler/core/parse.y"
+#line 3205 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 9219 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9223 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 284: /* args: args comma "*"  */
-#line 3206 "mrbgems/mruby-compiler/core/parse.y"
+#line 3210 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), new_splat(p, new_lvar(p, intern_op(mul))));
                     }
-#line 9227 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9231 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 285: /* args: args comma "*" arg  */
-#line 3210 "mrbgems/mruby-compiler/core/parse.y"
+#line 3214 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-3].nd), new_splat(p, (yyvsp[0].nd)));
                     }
-#line 9235 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9239 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 286: /* mrhs: args comma arg  */
-#line 3216 "mrbgems/mruby-compiler/core/parse.y"
+#line 3220 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 9244 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9248 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 287: /* mrhs: args comma "*" arg  */
-#line 3221 "mrbgems/mruby-compiler/core/parse.y"
+#line 3225 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-3].nd), new_splat(p, (yyvsp[0].nd)));
                     }
-#line 9252 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9256 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 288: /* mrhs: "*" arg  */
-#line 3225 "mrbgems/mruby-compiler/core/parse.y"
+#line 3229 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1(new_splat(p, (yyvsp[0].nd)));
                     }
-#line 9260 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9264 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 290: /* primary: string  */
-#line 3232 "mrbgems/mruby-compiler/core/parse.y"
+#line 3236 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_str(p, (yyvsp[0].nd));
                     }
-#line 9268 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9272 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 291: /* primary: xstring  */
-#line 3236 "mrbgems/mruby-compiler/core/parse.y"
+#line 3240 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_xstr(p, (yyvsp[0].nd));
                     }
-#line 9276 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9280 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 296: /* primary: "method"  */
-#line 3244 "mrbgems/mruby-compiler/core/parse.y"
+#line 3248 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_fcall(p, (yyvsp[0].id), 0);
                     }
-#line 9284 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9288 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 297: /* @10: %empty  */
-#line 3248 "mrbgems/mruby-compiler/core/parse.y"
+#line 3252 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.stack) = p->cmdarg_stack;
                       p->cmdarg_stack = 0;
                     }
-#line 9293 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9297 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 298: /* primary: "'begin'" @10 bodystmt "'end'"  */
-#line 3254 "mrbgems/mruby-compiler/core/parse.y"
+#line 3258 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->cmdarg_stack = (yyvsp[-2].stack);
                       (yyval.nd) = new_begin(p, (yyvsp[-1].nd));
                     }
-#line 9302 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9306 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 299: /* @11: %empty  */
-#line 3259 "mrbgems/mruby-compiler/core/parse.y"
+#line 3263 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.stack) = p->cmdarg_stack;
                       p->cmdarg_stack = 0;
                     }
-#line 9311 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9315 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 300: /* $@12: %empty  */
-#line 3263 "mrbgems/mruby-compiler/core/parse.y"
+#line 3267 "mrbgems/mruby-compiler/core/parse.y"
                            {p->lstate = EXPR_ENDARG;}
-#line 9317 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9321 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 301: /* primary: "(" @11 compstmt $@12 rparen  */
-#line 3264 "mrbgems/mruby-compiler/core/parse.y"
+#line 3268 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->cmdarg_stack = (yyvsp[-3].stack);
                       (yyval.nd) = (yyvsp[-2].nd);
                     }
-#line 9326 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9330 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 302: /* $@13: %empty  */
-#line 3268 "mrbgems/mruby-compiler/core/parse.y"
+#line 3272 "mrbgems/mruby-compiler/core/parse.y"
                               {p->lstate = EXPR_ENDARG;}
-#line 9332 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9336 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 303: /* primary: "(" $@13 rparen  */
-#line 3269 "mrbgems/mruby-compiler/core/parse.y"
+#line 3273 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_nil(p);
                     }
-#line 9340 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9344 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 304: /* primary: tLPAREN compstmt ')'  */
-#line 3273 "mrbgems/mruby-compiler/core/parse.y"
+#line 3277 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 9348 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9352 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 305: /* primary: primary_value "::" "constant"  */
-#line 3277 "mrbgems/mruby-compiler/core/parse.y"
+#line 3281 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_colon2(p, (yyvsp[-2].nd), (yyvsp[0].id));
                     }
-#line 9356 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9360 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 306: /* primary: tCOLON3 "constant"  */
-#line 3281 "mrbgems/mruby-compiler/core/parse.y"
+#line 3285 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_colon3(p, (yyvsp[0].id));
                     }
-#line 9364 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9368 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 307: /* primary: "[" aref_args ']'  */
-#line 3285 "mrbgems/mruby-compiler/core/parse.y"
+#line 3289 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_array(p, (yyvsp[-1].nd));
                     }
-#line 9372 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9376 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 308: /* primary: tLBRACE assoc_list '}'  */
-#line 3289 "mrbgems/mruby-compiler/core/parse.y"
+#line 3293 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_hash(p, (yyvsp[-1].nd));
                     }
-#line 9380 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9384 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 309: /* primary: "'return'"  */
-#line 3293 "mrbgems/mruby-compiler/core/parse.y"
+#line 3297 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_return(p, 0);
                     }
-#line 9388 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9392 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 310: /* primary: "'yield'" opt_paren_args  */
-#line 3297 "mrbgems/mruby-compiler/core/parse.y"
+#line 3301 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_yield(p, (yyvsp[0].nd));
                     }
-#line 9396 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9400 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 311: /* primary: "'not'" '(' expr rparen  */
-#line 3301 "mrbgems/mruby-compiler/core/parse.y"
+#line 3305 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, cond((yyvsp[-1].nd)), "!");
                     }
-#line 9404 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9408 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 312: /* primary: "'not'" '(' rparen  */
-#line 3305 "mrbgems/mruby-compiler/core/parse.y"
+#line 3309 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = call_uni_op(p, new_nil(p), "!");
                     }
-#line 9412 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9416 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 313: /* primary: operation brace_block  */
-#line 3309 "mrbgems/mruby-compiler/core/parse.y"
+#line 3313 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_fcall(p, (yyvsp[-1].id), new_callargs(p, 0, 0, (yyvsp[0].nd)));
                     }
-#line 9420 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9424 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 315: /* primary: method_call brace_block  */
-#line 3314 "mrbgems/mruby-compiler/core/parse.y"
+#line 3318 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       call_with_block(p, (yyvsp[-1].nd), (yyvsp[0].nd));
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 9429 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9433 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 316: /* @14: %empty  */
-#line 3319 "mrbgems/mruby-compiler/core/parse.y"
+#line 3323 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_nest(p);
                       nvars_nest(p);
                       (yyval.num) = p->lpar_beg;
                       p->lpar_beg = ++p->paren_nest;
                     }
-#line 9440 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9444 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 317: /* @15: %empty  */
-#line 3326 "mrbgems/mruby-compiler/core/parse.y"
+#line 3330 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.stack) = p->cmdarg_stack;
                       p->cmdarg_stack = 0;
                     }
-#line 9449 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9453 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 318: /* primary: "->" @14 f_larglist @15 lambda_body  */
-#line 3331 "mrbgems/mruby-compiler/core/parse.y"
+#line 3335 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lpar_beg = (yyvsp[-3].num);
                       (yyval.nd) = new_lambda(p, (yyvsp[-2].nd), (yyvsp[0].nd));
@@ -9458,176 +9462,176 @@ yyreduce:
                       p->cmdarg_stack = (yyvsp[-1].stack);
                       CMDARG_LEXPOP();
                     }
-#line 9462 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9466 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 319: /* primary: "'if'" expr_value then compstmt if_tail "'end'"  */
-#line 3343 "mrbgems/mruby-compiler/core/parse.y"
+#line 3347 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_if(p, cond((yyvsp[-4].nd)), (yyvsp[-2].nd), (yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-5].num));
                     }
-#line 9471 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9475 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 320: /* primary: "'unless'" expr_value then compstmt opt_else "'end'"  */
-#line 3351 "mrbgems/mruby-compiler/core/parse.y"
+#line 3355 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_if(p, cond((yyvsp[-4].nd)), (yyvsp[-1].nd), (yyvsp[-2].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-5].num));
                     }
-#line 9480 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9484 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 321: /* $@16: %empty  */
-#line 3355 "mrbgems/mruby-compiler/core/parse.y"
+#line 3359 "mrbgems/mruby-compiler/core/parse.y"
                                 {COND_PUSH(1);}
-#line 9486 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9490 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 322: /* $@17: %empty  */
-#line 3355 "mrbgems/mruby-compiler/core/parse.y"
+#line 3359 "mrbgems/mruby-compiler/core/parse.y"
                                                               {COND_POP();}
-#line 9492 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9496 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 323: /* primary: "'while'" $@16 expr_value do $@17 compstmt "'end'"  */
-#line 3358 "mrbgems/mruby-compiler/core/parse.y"
+#line 3362 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_while(p, cond((yyvsp[-4].nd)), (yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-6].num));
                     }
-#line 9501 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9505 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 324: /* $@18: %empty  */
-#line 3362 "mrbgems/mruby-compiler/core/parse.y"
+#line 3366 "mrbgems/mruby-compiler/core/parse.y"
                                 {COND_PUSH(1);}
-#line 9507 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9511 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 325: /* $@19: %empty  */
-#line 3362 "mrbgems/mruby-compiler/core/parse.y"
+#line 3366 "mrbgems/mruby-compiler/core/parse.y"
                                                               {COND_POP();}
-#line 9513 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9517 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 326: /* primary: "'until'" $@18 expr_value do $@19 compstmt "'end'"  */
-#line 3365 "mrbgems/mruby-compiler/core/parse.y"
+#line 3369 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_until(p, cond((yyvsp[-4].nd)), (yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-6].num));
                     }
-#line 9522 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9526 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 327: /* primary: "'case'" expr_value opt_terms case_body "'end'"  */
-#line 3372 "mrbgems/mruby-compiler/core/parse.y"
+#line 3376 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_case(p, (yyvsp[-3].nd), (yyvsp[-1].nd));
                     }
-#line 9530 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9534 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 328: /* primary: "'case'" opt_terms case_body "'end'"  */
-#line 3376 "mrbgems/mruby-compiler/core/parse.y"
+#line 3380 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_case(p, 0, (yyvsp[-1].nd));
                     }
-#line 9538 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9542 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 329: /* primary: "'case'" expr_value opt_terms "'in'" p_expr then compstmt in_clauses "'end'"  */
-#line 3384 "mrbgems/mruby-compiler/core/parse.y"
+#line 3388 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       node *in_clause = new_in(p, (yyvsp[-4].nd), NULL, (yyvsp[-2].nd), FALSE);
                       (yyval.nd) = new_case_match(p, (yyvsp[-7].nd), cons(in_clause, (yyvsp[-1].nd)));
                     }
-#line 9547 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9551 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 330: /* primary: "'case'" expr_value opt_terms "'in'" p_expr "'if' modifier" expr_value then compstmt in_clauses "'end'"  */
-#line 3393 "mrbgems/mruby-compiler/core/parse.y"
+#line 3397 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       node *in_clause = new_in(p, (yyvsp[-6].nd), (yyvsp[-4].nd), (yyvsp[-2].nd), FALSE);
                       (yyval.nd) = new_case_match(p, (yyvsp[-9].nd), cons(in_clause, (yyvsp[-1].nd)));
                     }
-#line 9556 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9560 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 331: /* primary: "'case'" expr_value opt_terms "'in'" p_expr "'unless' modifier" expr_value then compstmt in_clauses "'end'"  */
-#line 3402 "mrbgems/mruby-compiler/core/parse.y"
+#line 3406 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       node *in_clause = new_in(p, (yyvsp[-6].nd), (yyvsp[-4].nd), (yyvsp[-2].nd), TRUE);
                       (yyval.nd) = new_case_match(p, (yyvsp[-9].nd), cons(in_clause, (yyvsp[-1].nd)));
                     }
-#line 9565 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9569 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 332: /* $@20: %empty  */
-#line 3407 "mrbgems/mruby-compiler/core/parse.y"
+#line 3411 "mrbgems/mruby-compiler/core/parse.y"
                   {COND_PUSH(1);}
-#line 9571 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9575 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 333: /* $@21: %empty  */
-#line 3409 "mrbgems/mruby-compiler/core/parse.y"
+#line 3413 "mrbgems/mruby-compiler/core/parse.y"
                   {COND_POP();}
-#line 9577 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9581 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 334: /* primary: "'for'" for_var "'in'" $@20 expr_value do $@21 compstmt "'end'"  */
-#line 3412 "mrbgems/mruby-compiler/core/parse.y"
+#line 3416 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_for(p, (yyvsp[-7].nd), (yyvsp[-4].nd), (yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-8].num));
                     }
-#line 9586 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9590 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 335: /* @22: %empty  */
-#line 3418 "mrbgems/mruby-compiler/core/parse.y"
+#line 3422 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (p->in_def || p->in_single)
                         yyerror(&(yylsp[-2]), p, "class definition in method body");
                       (yyval.nd) = local_switch(p);
                       nvars_block(p);
                     }
-#line 9597 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9601 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 336: /* primary: "'class'" cpath superclass @22 bodystmt "'end'"  */
-#line 3426 "mrbgems/mruby-compiler/core/parse.y"
+#line 3430 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_class(p, (yyvsp[-4].nd), (yyvsp[-3].nd), (yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-5].num));
                       local_resume(p, (yyvsp[-2].nd));
                       nvars_unnest(p);
                     }
-#line 9608 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9612 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 337: /* @23: %empty  */
-#line 3434 "mrbgems/mruby-compiler/core/parse.y"
+#line 3438 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.num) = p->in_def;
                       p->in_def = 0;
                     }
-#line 9617 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9621 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 338: /* @24: %empty  */
-#line 3439 "mrbgems/mruby-compiler/core/parse.y"
+#line 3443 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(local_switch(p), int_to_node(p->in_single));
                       nvars_block(p);
                       p->in_single = 0;
                     }
-#line 9627 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9631 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 339: /* primary: "'class'" "<<" expr @23 term @24 bodystmt "'end'"  */
-#line 3446 "mrbgems/mruby-compiler/core/parse.y"
+#line 3450 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_sclass(p, (yyvsp[-5].nd), (yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-7].num));
@@ -9636,44 +9640,44 @@ yyreduce:
                       p->in_def = (yyvsp[-4].num);
                       p->in_single = node_to_int((yyvsp[-2].nd)->cdr);
                     }
-#line 9640 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9644 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 340: /* @25: %empty  */
-#line 3456 "mrbgems/mruby-compiler/core/parse.y"
+#line 3460 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if (p->in_def || p->in_single)
                         yyerror(&(yylsp[-1]), p, "module definition in method body");
                       (yyval.nd) = local_switch(p);
                       nvars_block(p);
                     }
-#line 9651 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9655 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 341: /* primary: "'module'" cpath @25 bodystmt "'end'"  */
-#line 3464 "mrbgems/mruby-compiler/core/parse.y"
+#line 3468 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_module(p, (yyvsp[-3].nd), (yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-4].num));
                       local_resume(p, (yyvsp[-2].nd));
                       nvars_unnest(p);
                     }
-#line 9662 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9666 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 342: /* primary: defn_head f_arglist bodystmt "'end'"  */
-#line 3474 "mrbgems/mruby-compiler/core/parse.y"
+#line 3478 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-3].nd);
                       defn_setup(p, (yyval.nd), (yyvsp[-2].nd), (yyvsp[-1].nd));
                       nvars_unnest(p);
                       p->in_def--;
                     }
-#line 9673 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9677 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 343: /* primary: defs_head f_arglist bodystmt "'end'"  */
-#line 3484 "mrbgems/mruby-compiler/core/parse.y"
+#line 3488 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-3].nd);
                       defn_setup(p, (yyval.nd), (yyvsp[-2].nd), (yyvsp[-1].nd));
@@ -9681,610 +9685,610 @@ yyreduce:
                       p->in_def--;
                       p->in_single--;
                     }
-#line 9685 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9689 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 344: /* primary: "'break'"  */
-#line 3492 "mrbgems/mruby-compiler/core/parse.y"
+#line 3496 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_break(p, 0);
                     }
-#line 9693 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9697 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 345: /* primary: "'next'"  */
-#line 3496 "mrbgems/mruby-compiler/core/parse.y"
+#line 3500 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_next(p, 0);
                     }
-#line 9701 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9705 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 346: /* primary: "'redo'"  */
-#line 3500 "mrbgems/mruby-compiler/core/parse.y"
+#line 3504 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_redo(p);
                     }
-#line 9709 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9713 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 347: /* primary: "'retry'"  */
-#line 3504 "mrbgems/mruby-compiler/core/parse.y"
+#line 3508 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_retry(p);
                     }
-#line 9717 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9721 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 348: /* primary_value: primary  */
-#line 3510 "mrbgems/mruby-compiler/core/parse.y"
+#line 3514 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                       if (!(yyval.nd)) (yyval.nd) = new_nil(p);
                     }
-#line 9726 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9730 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 355: /* if_tail: "'elsif'" expr_value then compstmt if_tail  */
-#line 3529 "mrbgems/mruby-compiler/core/parse.y"
+#line 3533 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_if(p, cond((yyvsp[-3].nd)), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 9734 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9738 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 357: /* opt_else: "'else'" compstmt  */
-#line 3536 "mrbgems/mruby-compiler/core/parse.y"
+#line 3540 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 9742 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9746 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 358: /* for_var: lhs  */
-#line 3542 "mrbgems/mruby-compiler/core/parse.y"
+#line 3546 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1(list1((yyvsp[0].nd)));
                     }
-#line 9750 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9754 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 360: /* f_margs: f_arg  */
-#line 3549 "mrbgems/mruby-compiler/core/parse.y"
+#line 3553 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3((yyvsp[0].nd),0,0);
                     }
-#line 9758 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9762 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 361: /* f_margs: f_arg ',' "*" f_norm_arg  */
-#line 3553 "mrbgems/mruby-compiler/core/parse.y"
+#line 3557 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3((yyvsp[-3].nd), new_lvar(p, (yyvsp[0].id)), 0);
                     }
-#line 9766 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9770 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 362: /* f_margs: f_arg ',' "*" f_norm_arg ',' f_arg  */
-#line 3557 "mrbgems/mruby-compiler/core/parse.y"
+#line 3561 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3((yyvsp[-5].nd), new_lvar(p, (yyvsp[-2].id)), (yyvsp[0].nd));
                     }
-#line 9774 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9778 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 363: /* f_margs: f_arg ',' "*"  */
-#line 3561 "mrbgems/mruby-compiler/core/parse.y"
+#line 3565 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, intern_op(mul));
                       (yyval.nd) = list3((yyvsp[-2].nd), int_to_node(-1), 0);
                     }
-#line 9783 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9787 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 364: /* f_margs: f_arg ',' "*" ',' f_arg  */
-#line 3566 "mrbgems/mruby-compiler/core/parse.y"
+#line 3570 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3((yyvsp[-4].nd), int_to_node(-1), (yyvsp[0].nd));
                     }
-#line 9791 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9795 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 365: /* f_margs: "*" f_norm_arg  */
-#line 3570 "mrbgems/mruby-compiler/core/parse.y"
+#line 3574 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3(0, new_lvar(p, (yyvsp[0].id)), 0);
                     }
-#line 9799 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9803 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 366: /* f_margs: "*" f_norm_arg ',' f_arg  */
-#line 3574 "mrbgems/mruby-compiler/core/parse.y"
+#line 3578 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3(0, new_lvar(p, (yyvsp[-2].id)), (yyvsp[0].nd));
                     }
-#line 9807 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9811 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 367: /* f_margs: "*"  */
-#line 3578 "mrbgems/mruby-compiler/core/parse.y"
+#line 3582 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, intern_op(mul));
                       (yyval.nd) = list3(0, int_to_node(-1), 0);
                     }
-#line 9816 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9820 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 368: /* $@26: %empty  */
-#line 3583 "mrbgems/mruby-compiler/core/parse.y"
+#line 3587 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, intern_op(mul));
                     }
-#line 9824 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9828 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 369: /* f_margs: "*" ',' $@26 f_arg  */
-#line 3587 "mrbgems/mruby-compiler/core/parse.y"
+#line 3591 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list3(0, int_to_node(-1), (yyvsp[0].nd));
                     }
-#line 9832 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9836 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 370: /* block_args_tail: f_block_kwarg ',' f_kwrest opt_f_block_arg  */
-#line 3593 "mrbgems/mruby-compiler/core/parse.y"
+#line 3597 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].id));
                     }
-#line 9840 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9844 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 371: /* block_args_tail: f_block_kwarg opt_f_block_arg  */
-#line 3597 "mrbgems/mruby-compiler/core/parse.y"
+#line 3601 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, (yyvsp[-1].nd), 0, (yyvsp[0].id));
                     }
-#line 9848 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9852 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 372: /* block_args_tail: f_kwrest opt_f_block_arg  */
-#line 3601 "mrbgems/mruby-compiler/core/parse.y"
+#line 3605 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, 0, (yyvsp[-1].id), (yyvsp[0].id));
                     }
-#line 9856 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9860 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 373: /* block_args_tail: f_block_arg  */
-#line 3605 "mrbgems/mruby-compiler/core/parse.y"
+#line 3609 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, 0, 0, (yyvsp[0].id));
                     }
-#line 9864 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9868 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 374: /* opt_block_args_tail: ',' block_args_tail  */
-#line 3611 "mrbgems/mruby-compiler/core/parse.y"
+#line 3615 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 9872 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9876 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 375: /* opt_block_args_tail: %empty  */
-#line 3615 "mrbgems/mruby-compiler/core/parse.y"
+#line 3619 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, 0, 0, 0);
                     }
-#line 9880 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9884 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 376: /* block_param: f_arg ',' f_block_optarg ',' f_rest_arg opt_block_args_tail  */
-#line 3621 "mrbgems/mruby-compiler/core/parse.y"
+#line 3625 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-5].nd), (yyvsp[-3].nd), (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 9888 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9892 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 377: /* block_param: f_arg ',' f_block_optarg ',' f_rest_arg ',' f_arg opt_block_args_tail  */
-#line 3625 "mrbgems/mruby-compiler/core/parse.y"
+#line 3629 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-7].nd), (yyvsp[-5].nd), (yyvsp[-3].id), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 9896 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9900 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 378: /* block_param: f_arg ',' f_block_optarg opt_block_args_tail  */
-#line 3629 "mrbgems/mruby-compiler/core/parse.y"
+#line 3633 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-3].nd), (yyvsp[-1].nd), 0, 0, (yyvsp[0].nd));
                     }
-#line 9904 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9908 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 379: /* block_param: f_arg ',' f_block_optarg ',' f_arg opt_block_args_tail  */
-#line 3633 "mrbgems/mruby-compiler/core/parse.y"
+#line 3637 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-5].nd), (yyvsp[-3].nd), 0, (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 9912 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9916 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 380: /* block_param: f_arg ',' f_rest_arg opt_block_args_tail  */
-#line 3637 "mrbgems/mruby-compiler/core/parse.y"
+#line 3641 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-3].nd), 0, (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 9920 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9924 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 381: /* block_param: f_arg ',' opt_block_args_tail  */
-#line 3641 "mrbgems/mruby-compiler/core/parse.y"
+#line 3645 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-2].nd), 0, 0, 0, (yyvsp[0].nd));
                     }
-#line 9928 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9932 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 382: /* block_param: f_arg ',' f_rest_arg ',' f_arg opt_block_args_tail  */
-#line 3645 "mrbgems/mruby-compiler/core/parse.y"
+#line 3649 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-5].nd), 0, (yyvsp[-3].id), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 9936 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9940 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 383: /* block_param: f_arg opt_block_args_tail  */
-#line 3649 "mrbgems/mruby-compiler/core/parse.y"
+#line 3653 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-1].nd), 0, 0, 0, (yyvsp[0].nd));
                     }
-#line 9944 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9948 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 384: /* block_param: f_block_optarg ',' f_rest_arg opt_block_args_tail  */
-#line 3653 "mrbgems/mruby-compiler/core/parse.y"
+#line 3657 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-3].nd), (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 9952 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9956 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 385: /* block_param: f_block_optarg ',' f_rest_arg ',' f_arg opt_block_args_tail  */
-#line 3657 "mrbgems/mruby-compiler/core/parse.y"
+#line 3661 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-5].nd), (yyvsp[-3].id), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 9960 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9964 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 386: /* block_param: f_block_optarg opt_block_args_tail  */
-#line 3661 "mrbgems/mruby-compiler/core/parse.y"
+#line 3665 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-1].nd), 0, 0, (yyvsp[0].nd));
                     }
-#line 9968 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9972 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 387: /* block_param: f_block_optarg ',' f_arg opt_block_args_tail  */
-#line 3665 "mrbgems/mruby-compiler/core/parse.y"
+#line 3669 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-3].nd), 0, (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 9976 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9980 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 388: /* block_param: f_rest_arg opt_block_args_tail  */
-#line 3669 "mrbgems/mruby-compiler/core/parse.y"
+#line 3673 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, 0, (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 9984 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9988 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 389: /* block_param: f_rest_arg ',' f_arg opt_block_args_tail  */
-#line 3673 "mrbgems/mruby-compiler/core/parse.y"
+#line 3677 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, 0, (yyvsp[-3].id), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 9992 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 9996 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 390: /* block_param: block_args_tail  */
-#line 3677 "mrbgems/mruby-compiler/core/parse.y"
+#line 3681 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, 0, 0, 0, (yyvsp[0].nd));
                     }
-#line 10000 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10004 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 391: /* opt_block_param: none  */
-#line 3683 "mrbgems/mruby-compiler/core/parse.y"
+#line 3687 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_blk(p);
                       (yyval.nd) = 0;
                     }
-#line 10009 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10013 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 392: /* opt_block_param: block_param_def  */
-#line 3688 "mrbgems/mruby-compiler/core/parse.y"
+#line 3692 "mrbgems/mruby-compiler/core/parse.y"
                    {
                       p->cmd_start = TRUE;
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 10018 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10022 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 393: /* $@27: %empty  */
-#line 3694 "mrbgems/mruby-compiler/core/parse.y"
+#line 3698 "mrbgems/mruby-compiler/core/parse.y"
                       {local_add_blk(p);}
-#line 10024 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10028 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 394: /* block_param_def: '|' $@27 opt_bv_decl '|'  */
-#line 3695 "mrbgems/mruby-compiler/core/parse.y"
+#line 3699 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = 0;
                     }
-#line 10032 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10036 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 395: /* block_param_def: "||"  */
-#line 3699 "mrbgems/mruby-compiler/core/parse.y"
+#line 3703 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_blk(p);
                       (yyval.nd) = 0;
                     }
-#line 10041 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10045 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 396: /* block_param_def: '|' block_param opt_bv_decl '|'  */
-#line 3704 "mrbgems/mruby-compiler/core/parse.y"
+#line 3708 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-2].nd);
                     }
-#line 10049 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10053 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 397: /* opt_bv_decl: opt_nl  */
-#line 3710 "mrbgems/mruby-compiler/core/parse.y"
-                    {
-                      (yyval.nd) = 0;
-                    }
-#line 10057 "mrbgems/mruby-compiler/core/y.tab.c"
-    break;
-
-  case 398: /* opt_bv_decl: opt_nl ';' bv_decls opt_nl  */
 #line 3714 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = 0;
                     }
-#line 10065 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10061 "mrbgems/mruby-compiler/core/y.tab.c"
+    break;
+
+  case 398: /* opt_bv_decl: opt_nl ';' bv_decls opt_nl  */
+#line 3718 "mrbgems/mruby-compiler/core/parse.y"
+                    {
+                      (yyval.nd) = 0;
+                    }
+#line 10069 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 401: /* bvar: "local variable or method"  */
-#line 3724 "mrbgems/mruby-compiler/core/parse.y"
+#line 3728 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, (yyvsp[0].id));
                       new_bv(p, (yyvsp[0].id));
                     }
-#line 10074 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10078 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 403: /* f_larglist: '(' f_args opt_bv_decl ')'  */
-#line 3732 "mrbgems/mruby-compiler/core/parse.y"
+#line 3736 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-2].nd);
                     }
-#line 10082 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10086 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 404: /* f_larglist: f_args  */
-#line 3736 "mrbgems/mruby-compiler/core/parse.y"
+#line 3740 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 10090 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10094 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 405: /* lambda_body: tLAMBEG compstmt '}'  */
-#line 3742 "mrbgems/mruby-compiler/core/parse.y"
-                    {
-                      (yyval.nd) = (yyvsp[-1].nd);
-                    }
-#line 10098 "mrbgems/mruby-compiler/core/y.tab.c"
-    break;
-
-  case 406: /* lambda_body: "'do' for lambda" bodystmt "'end'"  */
 #line 3746 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 10106 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10102 "mrbgems/mruby-compiler/core/y.tab.c"
+    break;
+
+  case 406: /* lambda_body: "'do' for lambda" bodystmt "'end'"  */
+#line 3750 "mrbgems/mruby-compiler/core/parse.y"
+                    {
+                      (yyval.nd) = (yyvsp[-1].nd);
+                    }
+#line 10110 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 407: /* @28: %empty  */
-#line 3752 "mrbgems/mruby-compiler/core/parse.y"
+#line 3756 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_nest(p);
                       nvars_nest(p);
                       (yyval.num) = p->lineno;
                     }
-#line 10116 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10120 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 408: /* do_block: "'do' for block" @28 opt_block_param bodystmt "'end'"  */
-#line 3760 "mrbgems/mruby-compiler/core/parse.y"
+#line 3764 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_block(p,(yyvsp[-2].nd),(yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-3].num));
                       local_unnest(p);
                       nvars_unnest(p);
                     }
-#line 10127 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10131 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 409: /* block_call: command do_block  */
-#line 3769 "mrbgems/mruby-compiler/core/parse.y"
+#line 3773 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       call_with_block(p, (yyvsp[-1].nd), (yyvsp[0].nd));
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 10136 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10140 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 410: /* block_call: block_call call_op2 operation2 opt_paren_args  */
-#line 3774 "mrbgems/mruby-compiler/core/parse.y"
+#line 3778 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].nd), (yyvsp[-2].num));
                     }
-#line 10144 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10148 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 411: /* block_call: block_call call_op2 operation2 opt_paren_args brace_block  */
-#line 3778 "mrbgems/mruby-compiler/core/parse.y"
+#line 3782 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), (yyvsp[-1].nd), (yyvsp[-3].num));
                       call_with_block(p, (yyval.nd), (yyvsp[0].nd));
                     }
-#line 10153 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10157 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 412: /* block_call: block_call call_op2 operation2 command_args do_block  */
-#line 3783 "mrbgems/mruby-compiler/core/parse.y"
+#line 3787 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-4].nd), (yyvsp[-2].id), (yyvsp[-1].nd), (yyvsp[-3].num));
                       call_with_block(p, (yyval.nd), (yyvsp[0].nd));
                     }
-#line 10162 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10166 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 413: /* method_call: operation paren_args  */
-#line 3790 "mrbgems/mruby-compiler/core/parse.y"
+#line 3794 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_fcall(p, (yyvsp[-1].id), (yyvsp[0].nd));
                     }
-#line 10170 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10174 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 414: /* method_call: primary_value call_op operation2 opt_paren_args  */
-#line 3794 "mrbgems/mruby-compiler/core/parse.y"
+#line 3798 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].nd), (yyvsp[-2].num));
                     }
-#line 10178 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10182 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 415: /* method_call: primary_value "::" operation2 paren_args  */
-#line 3798 "mrbgems/mruby-compiler/core/parse.y"
+#line 3802 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].nd), tCOLON2);
                     }
-#line 10186 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10190 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 416: /* method_call: primary_value "::" operation3  */
-#line 3802 "mrbgems/mruby-compiler/core/parse.y"
+#line 3806 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), (yyvsp[0].id), 0, tCOLON2);
                     }
-#line 10194 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10198 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 417: /* method_call: primary_value call_op paren_args  */
-#line 3806 "mrbgems/mruby-compiler/core/parse.y"
+#line 3810 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), MRB_SYM(call), (yyvsp[0].nd), (yyvsp[-1].num));
                     }
-#line 10202 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10206 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 418: /* method_call: primary_value "::" paren_args  */
-#line 3810 "mrbgems/mruby-compiler/core/parse.y"
+#line 3814 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-2].nd), MRB_SYM(call), (yyvsp[0].nd), tCOLON2);
                     }
-#line 10210 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10214 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 419: /* method_call: "'super'" paren_args  */
-#line 3814 "mrbgems/mruby-compiler/core/parse.y"
+#line 3818 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_super(p, (yyvsp[0].nd));
                     }
-#line 10218 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10222 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 420: /* method_call: "'super'"  */
-#line 3818 "mrbgems/mruby-compiler/core/parse.y"
+#line 3822 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_zsuper(p);
                     }
-#line 10226 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10230 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 421: /* method_call: primary_value '[' opt_call_args ']'  */
-#line 3822 "mrbgems/mruby-compiler/core/parse.y"
+#line 3826 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_call(p, (yyvsp[-3].nd), intern_op(aref), (yyvsp[-1].nd), '.');
                     }
-#line 10234 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10238 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 422: /* @29: %empty  */
-#line 3828 "mrbgems/mruby-compiler/core/parse.y"
+#line 3832 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_nest(p);
                       nvars_nest(p);
                       (yyval.num) = p->lineno;
                     }
-#line 10244 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10248 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 423: /* brace_block: '{' @29 opt_block_param compstmt '}'  */
-#line 3835 "mrbgems/mruby-compiler/core/parse.y"
+#line 3839 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_block(p,(yyvsp[-2].nd),(yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-3].num));
                       local_unnest(p);
                       nvars_unnest(p);
                     }
-#line 10255 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10259 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 424: /* @30: %empty  */
-#line 3842 "mrbgems/mruby-compiler/core/parse.y"
+#line 3846 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_nest(p);
                       nvars_nest(p);
                       (yyval.num) = p->lineno;
                     }
-#line 10265 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10269 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 425: /* brace_block: "'do'" @30 opt_block_param bodystmt "'end'"  */
-#line 3849 "mrbgems/mruby-compiler/core/parse.y"
+#line 3853 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_block(p,(yyvsp[-2].nd),(yyvsp[-1].nd));
                       SET_LINENO((yyval.nd), (yyvsp[-3].num));
                       local_unnest(p);
                       nvars_unnest(p);
                     }
-#line 10276 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10280 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 426: /* case_body: "'when'" args then compstmt cases  */
-#line 3860 "mrbgems/mruby-compiler/core/parse.y"
+#line 3864 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(cons((yyvsp[-3].nd), (yyvsp[-1].nd)), (yyvsp[0].nd));
                     }
-#line 10284 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10288 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 427: /* cases: opt_else  */
-#line 3866 "mrbgems/mruby-compiler/core/parse.y"
+#line 3870 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       if ((yyvsp[0].nd)) {
                         (yyval.nd) = cons(cons(0, (yyvsp[0].nd)), 0);
@@ -10293,622 +10297,622 @@ yyreduce:
                         (yyval.nd) = 0;
                       }
                     }
-#line 10297 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10301 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 429: /* in_clauses: opt_else  */
-#line 3880 "mrbgems/mruby-compiler/core/parse.y"
+#line 3884 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd) ? list1(new_in(p, NULL, NULL, (yyvsp[0].nd), FALSE)) : 0;
                     }
-#line 10305 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10309 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 430: /* $@31: %empty  */
-#line 3883 "mrbgems/mruby-compiler/core/parse.y"
+#line 3887 "mrbgems/mruby-compiler/core/parse.y"
                                     {p->in_kwarg--;}
-#line 10311 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10315 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 431: /* in_clauses: "'in'" p_expr $@31 then compstmt in_clauses  */
-#line 3884 "mrbgems/mruby-compiler/core/parse.y"
+#line 3888 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       node *in_clause = new_in(p, (yyvsp[-4].nd), NULL, (yyvsp[-1].nd), FALSE);
                       (yyval.nd) = cons(in_clause, (yyvsp[0].nd));
                     }
-#line 10320 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10324 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 432: /* $@32: %empty  */
-#line 3888 "mrbgems/mruby-compiler/core/parse.y"
+#line 3892 "mrbgems/mruby-compiler/core/parse.y"
                                     {p->in_kwarg--;}
-#line 10326 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10330 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 433: /* in_clauses: "'in'" p_expr $@32 "'if' modifier" expr_value then compstmt in_clauses  */
-#line 3889 "mrbgems/mruby-compiler/core/parse.y"
+#line 3893 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       node *in_clause = new_in(p, (yyvsp[-6].nd), (yyvsp[-3].nd), (yyvsp[-1].nd), FALSE);
                       (yyval.nd) = cons(in_clause, (yyvsp[0].nd));
                     }
-#line 10335 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10339 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 434: /* $@33: %empty  */
-#line 3893 "mrbgems/mruby-compiler/core/parse.y"
+#line 3897 "mrbgems/mruby-compiler/core/parse.y"
                                     {p->in_kwarg--;}
-#line 10341 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10345 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 435: /* in_clauses: "'in'" p_expr $@33 "'unless' modifier" expr_value then compstmt in_clauses  */
-#line 3894 "mrbgems/mruby-compiler/core/parse.y"
+#line 3898 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       node *in_clause = new_in(p, (yyvsp[-6].nd), (yyvsp[-3].nd), (yyvsp[-1].nd), TRUE);
                       (yyval.nd) = cons(in_clause, (yyvsp[0].nd));
                     }
-#line 10350 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10354 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 437: /* p_expr: p_args_head p_as  */
-#line 3905 "mrbgems/mruby-compiler/core/parse.y"
+#line 3909 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_pat_array(p, push((yyvsp[-1].nd), (yyvsp[0].nd)), 0, 0);
                     }
-#line 10358 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10362 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 438: /* p_expr: p_args_head p_rest  */
-#line 3909 "mrbgems/mruby-compiler/core/parse.y"
+#line 3913 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_pat_array(p, (yyvsp[-1].nd), (yyvsp[0].nd), 0);
                     }
-#line 10366 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10370 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 439: /* p_expr: p_args_head p_rest ',' p_args_post  */
-#line 3913 "mrbgems/mruby-compiler/core/parse.y"
+#line 3917 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_pat_array(p, (yyvsp[-3].nd), (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 10374 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10378 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 440: /* p_expr: p_rest  */
-#line 3917 "mrbgems/mruby-compiler/core/parse.y"
+#line 3921 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_pat_array(p, 0, (yyvsp[0].nd), 0);
                     }
-#line 10382 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10386 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 441: /* p_expr: p_rest ',' p_args_post  */
-#line 3921 "mrbgems/mruby-compiler/core/parse.y"
+#line 3925 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_pat_array(p, 0, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 10390 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10394 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 442: /* p_expr: p_hash_elems  */
-#line 3925 "mrbgems/mruby-compiler/core/parse.y"
+#line 3929 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* Brace-less hash pattern: in a:, b: x */
                       (yyval.nd) = new_pat_hash(p, (yyvsp[0].nd), 0);
                     }
-#line 10399 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10403 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 443: /* p_expr: p_hash_elems ',' p_kwrest  */
-#line 3930 "mrbgems/mruby-compiler/core/parse.y"
+#line 3934 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* Brace-less hash pattern with kwrest: in a:, **rest */
                       (yyval.nd) = new_pat_hash(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 10408 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10412 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 444: /* p_expr: p_kwrest  */
-#line 3935 "mrbgems/mruby-compiler/core/parse.y"
+#line 3939 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* Brace-less kwrest only: in **rest */
                       (yyval.nd) = new_pat_hash(p, 0, (yyvsp[0].nd));
                     }
-#line 10417 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10421 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 445: /* p_args_head: p_as ','  */
-#line 3943 "mrbgems/mruby-compiler/core/parse.y"
+#line 3947 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[-1].nd));
                     }
-#line 10425 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10429 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 446: /* p_args_head: p_args_head p_as ','  */
-#line 3947 "mrbgems/mruby-compiler/core/parse.y"
+#line 3951 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[-1].nd));
                     }
-#line 10433 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10437 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 447: /* p_args_post: p_as  */
-#line 3954 "mrbgems/mruby-compiler/core/parse.y"
+#line 3958 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 10441 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10445 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 448: /* p_args_post: p_args_post ',' p_as  */
-#line 3958 "mrbgems/mruby-compiler/core/parse.y"
+#line 3962 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 10449 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10453 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 450: /* p_as: p_alt "=>" "local variable or method"  */
-#line 3965 "mrbgems/mruby-compiler/core/parse.y"
+#line 3969 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_pat_as(p, (yyvsp[-2].nd), (yyvsp[0].id));
                     }
-#line 10457 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10461 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 452: /* p_alt: p_alt '|' p_value  */
-#line 3972 "mrbgems/mruby-compiler/core/parse.y"
+#line 3976 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_pat_alt(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 10465 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10469 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 454: /* p_value: numeric  */
-#line 3979 "mrbgems/mruby-compiler/core/parse.y"
-                    {
-                      (yyval.nd) = new_pat_value(p, (yyvsp[0].nd));
-                    }
-#line 10473 "mrbgems/mruby-compiler/core/y.tab.c"
-    break;
-
-  case 455: /* p_value: symbol  */
 #line 3983 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_pat_value(p, (yyvsp[0].nd));
                     }
-#line 10481 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10477 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
-  case 456: /* p_value: tSTRING  */
+  case 455: /* p_value: symbol  */
 #line 3987 "mrbgems/mruby-compiler/core/parse.y"
-                    {
-                      (yyval.nd) = new_pat_value(p, new_str(p, list1((yyvsp[0].nd))));
-                    }
-#line 10489 "mrbgems/mruby-compiler/core/y.tab.c"
-    break;
-
-  case 457: /* p_value: "'nil'"  */
-#line 3991 "mrbgems/mruby-compiler/core/parse.y"
-                    {
-                      (yyval.nd) = new_pat_value(p, new_nil(p));
-                    }
-#line 10497 "mrbgems/mruby-compiler/core/y.tab.c"
-    break;
-
-  case 458: /* p_value: "'true'"  */
-#line 3995 "mrbgems/mruby-compiler/core/parse.y"
-                    {
-                      (yyval.nd) = new_pat_value(p, new_true(p));
-                    }
-#line 10505 "mrbgems/mruby-compiler/core/y.tab.c"
-    break;
-
-  case 459: /* p_value: "'false'"  */
-#line 3999 "mrbgems/mruby-compiler/core/parse.y"
-                    {
-                      (yyval.nd) = new_pat_value(p, new_false(p));
-                    }
-#line 10513 "mrbgems/mruby-compiler/core/y.tab.c"
-    break;
-
-  case 460: /* p_value: p_const  */
-#line 4003 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_pat_value(p, (yyvsp[0].nd));
                     }
-#line 10521 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10485 "mrbgems/mruby-compiler/core/y.tab.c"
+    break;
+
+  case 456: /* p_value: tSTRING  */
+#line 3991 "mrbgems/mruby-compiler/core/parse.y"
+                    {
+                      (yyval.nd) = new_pat_value(p, new_str(p, list1((yyvsp[0].nd))));
+                    }
+#line 10493 "mrbgems/mruby-compiler/core/y.tab.c"
+    break;
+
+  case 457: /* p_value: "'nil'"  */
+#line 3995 "mrbgems/mruby-compiler/core/parse.y"
+                    {
+                      (yyval.nd) = new_pat_value(p, new_nil(p));
+                    }
+#line 10501 "mrbgems/mruby-compiler/core/y.tab.c"
+    break;
+
+  case 458: /* p_value: "'true'"  */
+#line 3999 "mrbgems/mruby-compiler/core/parse.y"
+                    {
+                      (yyval.nd) = new_pat_value(p, new_true(p));
+                    }
+#line 10509 "mrbgems/mruby-compiler/core/y.tab.c"
+    break;
+
+  case 459: /* p_value: "'false'"  */
+#line 4003 "mrbgems/mruby-compiler/core/parse.y"
+                    {
+                      (yyval.nd) = new_pat_value(p, new_false(p));
+                    }
+#line 10517 "mrbgems/mruby-compiler/core/y.tab.c"
+    break;
+
+  case 460: /* p_value: p_const  */
+#line 4007 "mrbgems/mruby-compiler/core/parse.y"
+                    {
+                      (yyval.nd) = new_pat_value(p, (yyvsp[0].nd));
+                    }
+#line 10525 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 463: /* p_value: '^' "local variable or method"  */
-#line 4009 "mrbgems/mruby-compiler/core/parse.y"
+#line 4013 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_pat_pin(p, (yyvsp[0].id));
                     }
-#line 10529 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10533 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 464: /* p_array: "[" p_array_body ']'  */
-#line 4016 "mrbgems/mruby-compiler/core/parse.y"
+#line 4020 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 10537 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10541 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 465: /* p_array: "[" ']'  */
-#line 4020 "mrbgems/mruby-compiler/core/parse.y"
+#line 4024 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_pat_array(p, 0, 0, 0);
                     }
-#line 10545 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10549 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 466: /* p_array_body: p_array_elems  */
-#line 4027 "mrbgems/mruby-compiler/core/parse.y"
+#line 4031 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* Just pre elements, no rest */
                       (yyval.nd) = new_pat_array(p, (yyvsp[0].nd), 0, 0);
                     }
-#line 10554 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10558 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 467: /* p_array_body: p_array_elems ',' p_rest  */
-#line 4032 "mrbgems/mruby-compiler/core/parse.y"
+#line 4036 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* Pre elements + rest, no post */
                       (yyval.nd) = new_pat_array(p, (yyvsp[-2].nd), (yyvsp[0].nd), 0);
                     }
-#line 10563 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10567 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 468: /* p_array_body: p_array_elems ',' p_rest ',' p_array_elems  */
-#line 4037 "mrbgems/mruby-compiler/core/parse.y"
+#line 4041 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* Pre + rest + post */
                       (yyval.nd) = new_pat_array(p, (yyvsp[-4].nd), (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 10572 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10576 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 469: /* p_array_body: p_rest  */
-#line 4042 "mrbgems/mruby-compiler/core/parse.y"
+#line 4046 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* Just rest, no pre or post */
                       (yyval.nd) = new_pat_array(p, 0, (yyvsp[0].nd), 0);
                     }
-#line 10581 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10585 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 470: /* p_array_body: p_rest ',' p_array_elems  */
-#line 4047 "mrbgems/mruby-compiler/core/parse.y"
+#line 4051 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* Rest + post, no pre */
                       (yyval.nd) = new_pat_array(p, 0, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 10590 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10594 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 471: /* p_array_body: p_rest ',' p_array_elems ',' p_rest  */
-#line 4052 "mrbgems/mruby-compiler/core/parse.y"
+#line 4056 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* Find pattern: [*pre, elems, *post] */
                       (yyval.nd) = new_pat_find(p, (yyvsp[-4].nd), (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 10599 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10603 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 472: /* p_array_elems: p_as  */
-#line 4060 "mrbgems/mruby-compiler/core/parse.y"
+#line 4064 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 10607 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10611 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 473: /* p_array_elems: p_array_elems ',' p_as  */
-#line 4064 "mrbgems/mruby-compiler/core/parse.y"
+#line 4068 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 10615 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10619 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 474: /* p_rest: "*" "local variable or method"  */
-#line 4071 "mrbgems/mruby-compiler/core/parse.y"
+#line 4075 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_pat_var(p, (yyvsp[0].id));
                     }
-#line 10623 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10627 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 475: /* p_rest: "*"  */
-#line 4075 "mrbgems/mruby-compiler/core/parse.y"
+#line 4079 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* Anonymous rest pattern */
                       (yyval.nd) = (node*)-1;
                     }
-#line 10632 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10636 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 476: /* p_const: "constant"  */
-#line 4083 "mrbgems/mruby-compiler/core/parse.y"
+#line 4087 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_const(p, (yyvsp[0].id));
                     }
-#line 10640 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10644 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 477: /* p_const: p_const "::" "constant"  */
-#line 4087 "mrbgems/mruby-compiler/core/parse.y"
+#line 4091 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_colon2(p, (yyvsp[-2].nd), (yyvsp[0].id));
                     }
-#line 10648 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10652 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 478: /* p_const: tCOLON3 "constant"  */
-#line 4091 "mrbgems/mruby-compiler/core/parse.y"
+#line 4095 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_colon3(p, (yyvsp[0].id));
                     }
-#line 10656 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10660 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 479: /* p_hash: tLBRACE p_hash_body '}'  */
-#line 4098 "mrbgems/mruby-compiler/core/parse.y"
+#line 4102 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 10664 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10668 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 480: /* p_hash: tLBRACE '}'  */
-#line 4102 "mrbgems/mruby-compiler/core/parse.y"
+#line 4106 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_pat_hash(p, 0, 0);
                     }
-#line 10672 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10676 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 481: /* p_hash_body: p_hash_elems  */
-#line 4109 "mrbgems/mruby-compiler/core/parse.y"
+#line 4113 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_pat_hash(p, (yyvsp[0].nd), 0);
                     }
-#line 10680 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10684 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 482: /* p_hash_body: p_hash_elems ',' p_kwrest  */
-#line 4113 "mrbgems/mruby-compiler/core/parse.y"
+#line 4117 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_pat_hash(p, (yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 10688 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10692 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 483: /* p_hash_body: p_kwrest  */
-#line 4117 "mrbgems/mruby-compiler/core/parse.y"
+#line 4121 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_pat_hash(p, 0, (yyvsp[0].nd));
                     }
-#line 10696 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10700 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 484: /* p_hash_elems: p_hash_elem  */
-#line 4124 "mrbgems/mruby-compiler/core/parse.y"
+#line 4128 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 10704 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10708 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 485: /* p_hash_elems: p_hash_elems ',' p_hash_elem  */
-#line 4128 "mrbgems/mruby-compiler/core/parse.y"
+#line 4132 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 10712 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10716 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 486: /* p_hash_elem: "local variable or method" "label" p_as  */
-#line 4137 "mrbgems/mruby-compiler/core/parse.y"
+#line 4141 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* {key: pattern} */
                       (yyval.nd) = cons(new_sym(p, (yyvsp[-2].id)), (yyvsp[0].nd));
                     }
-#line 10721 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10725 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 487: /* p_hash_elem: "local variable or method" "label"  */
-#line 4142 "mrbgems/mruby-compiler/core/parse.y"
+#line 4146 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* {key:} shorthand - binds to variable with same name */
                       (yyval.nd) = cons(new_sym(p, (yyvsp[-1].id)), new_pat_var(p, (yyvsp[-1].id)));
                     }
-#line 10730 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10734 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 488: /* p_kwrest: "**" "local variable or method"  */
-#line 4150 "mrbgems/mruby-compiler/core/parse.y"
+#line 4154 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_pat_var(p, (yyvsp[0].id));
                     }
-#line 10738 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10742 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 489: /* p_kwrest: "**" "'nil'"  */
-#line 4154 "mrbgems/mruby-compiler/core/parse.y"
+#line 4158 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* **nil - exact match, no extra keys allowed */
                       (yyval.nd) = (node*)-1;
                     }
-#line 10747 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10751 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 490: /* p_kwrest: "**"  */
-#line 4159 "mrbgems/mruby-compiler/core/parse.y"
+#line 4163 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* ** - anonymous rest, discards extra keys */
                       (yyval.nd) = (node*)-2;
                     }
-#line 10756 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10760 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 491: /* p_var: "local variable or method"  */
-#line 4166 "mrbgems/mruby-compiler/core/parse.y"
+#line 4170 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_pat_var(p, (yyvsp[0].id));
                     }
-#line 10764 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10768 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 492: /* opt_rescue: "'rescue'" exc_list exc_var then compstmt opt_rescue  */
-#line 4174 "mrbgems/mruby-compiler/core/parse.y"
+#line 4178 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1(list3((yyvsp[-4].nd), (yyvsp[-3].nd), (yyvsp[-1].nd)));
                       if ((yyvsp[0].nd)) (yyval.nd) = append((yyval.nd), (yyvsp[0].nd));
                     }
-#line 10773 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10777 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 494: /* exc_list: arg  */
-#line 4182 "mrbgems/mruby-compiler/core/parse.y"
+#line 4186 "mrbgems/mruby-compiler/core/parse.y"
                     {
                         (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 10781 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10785 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 497: /* exc_var: "=>" lhs  */
-#line 4190 "mrbgems/mruby-compiler/core/parse.y"
+#line 4194 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 10789 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10793 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 499: /* opt_ensure: "'ensure'" compstmt  */
-#line 4197 "mrbgems/mruby-compiler/core/parse.y"
+#line 4201 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 10797 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10801 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 506: /* string: string string_fragment  */
-#line 4211 "mrbgems/mruby-compiler/core/parse.y"
+#line 4215 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = append((yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 10805 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10809 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 507: /* string_fragment: "character literal"  */
-#line 4217 "mrbgems/mruby-compiler/core/parse.y"
+#line 4221 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* tCHAR is (len . str), wrap as cons list */
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 10814 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10818 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 508: /* string_fragment: tSTRING  */
-#line 4222 "mrbgems/mruby-compiler/core/parse.y"
+#line 4226 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* tSTRING is (len . str), wrap as cons list */
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 10823 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10827 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 509: /* string_fragment: "string literal" tSTRING  */
-#line 4227 "mrbgems/mruby-compiler/core/parse.y"
+#line 4231 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* $2 is (len . str), wrap as cons list */
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 10832 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10836 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 510: /* string_fragment: "string literal" string_rep tSTRING  */
-#line 4232 "mrbgems/mruby-compiler/core/parse.y"
+#line 4236 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 10840 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10844 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 512: /* string_rep: string_rep string_interp  */
-#line 4239 "mrbgems/mruby-compiler/core/parse.y"
+#line 4243 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = append((yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 10848 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10852 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 513: /* string_interp: tSTRING_MID  */
-#line 4245 "mrbgems/mruby-compiler/core/parse.y"
+#line 4249 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       /* $1 is already in (len . str) format */
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 10857 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10861 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 514: /* @34: %empty  */
-#line 4250 "mrbgems/mruby-compiler/core/parse.y"
+#line 4254 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push_strterm(p);
                     }
-#line 10865 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10869 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 515: /* string_interp: tSTRING_PART @34 compstmt '}'  */
-#line 4255 "mrbgems/mruby-compiler/core/parse.y"
+#line 4259 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       pop_strterm(p,(yyvsp[-2].nd));
                       /* $1 is already in (len . str) format, create (-1 . node) for expression */
                       node *expr_elem = cons(int_to_node(-1), (yyvsp[-1].nd));
                       (yyval.nd) = list2((yyvsp[-3].nd), expr_elem);
                     }
-#line 10876 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10880 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 516: /* string_interp: tLITERAL_DELIM  */
-#line 4262 "mrbgems/mruby-compiler/core/parse.y"
-                    {
-                      (yyval.nd) = list1(new_literal_delim(p));
-                    }
-#line 10884 "mrbgems/mruby-compiler/core/y.tab.c"
-    break;
-
-  case 517: /* string_interp: tHD_LITERAL_DELIM heredoc_bodies  */
 #line 4266 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1(new_literal_delim(p));
                     }
-#line 10892 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10888 "mrbgems/mruby-compiler/core/y.tab.c"
+    break;
+
+  case 517: /* string_interp: tHD_LITERAL_DELIM heredoc_bodies  */
+#line 4270 "mrbgems/mruby-compiler/core/parse.y"
+                    {
+                      (yyval.nd) = list1(new_literal_delim(p));
+                    }
+#line 10896 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 518: /* xstring: tXSTRING_BEG tXSTRING  */
-#line 4272 "mrbgems/mruby-compiler/core/parse.y"
+#line 4276 "mrbgems/mruby-compiler/core/parse.y"
                     {
                         (yyval.nd) = cons((yyvsp[0].nd), (node*)NULL);
                     }
-#line 10900 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10904 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 519: /* xstring: tXSTRING_BEG string_rep tXSTRING  */
-#line 4276 "mrbgems/mruby-compiler/core/parse.y"
+#line 4280 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 10908 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10912 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 520: /* regexp: tREGEXP_BEG tREGEXP  */
-#line 4282 "mrbgems/mruby-compiler/core/parse.y"
+#line 4286 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       node *data = (yyvsp[0].nd);  /* ((len . pattern) . (flags . encoding)) */
                       const char *flags = (const char*)data->cdr->car;
@@ -10917,11 +10921,11 @@ yyreduce:
                       node *pattern_list = cons(data->car, (node*)NULL);
                       (yyval.nd) = new_regx(p, pattern_list, flags, encoding);
                     }
-#line 10921 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10925 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 521: /* regexp: tREGEXP_BEG string_rep tREGEXP  */
-#line 4291 "mrbgems/mruby-compiler/core/parse.y"
+#line 4295 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       node *data = (yyvsp[0].nd);  /* ((len . pattern) . (flags . encoding)) */
                       const char *flags = (const char*)data->cdr->car;
@@ -10930,47 +10934,47 @@ yyreduce:
                       node *complete_list = push((yyvsp[-1].nd), data->car);
                       (yyval.nd) = new_regx(p, complete_list, flags, encoding);
                     }
-#line 10934 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10938 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 525: /* heredoc_body: tHEREDOC_END  */
-#line 4309 "mrbgems/mruby-compiler/core/parse.y"
+#line 4313 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       parser_heredoc_info *info = parsing_heredoc_info(p);
                       info->doc = push(info->doc, new_str_empty(p));
                       heredoc_end(p);
                     }
-#line 10944 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10948 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 526: /* heredoc_body: heredoc_string_rep tHEREDOC_END  */
-#line 4315 "mrbgems/mruby-compiler/core/parse.y"
+#line 4319 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       heredoc_end(p);
                     }
-#line 10952 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10956 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 529: /* heredoc_string_interp: tHD_STRING_MID  */
-#line 4325 "mrbgems/mruby-compiler/core/parse.y"
+#line 4329 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       parser_heredoc_info *info = parsing_heredoc_info(p);
                       info->doc = push(info->doc, (yyvsp[0].nd));
                       heredoc_treat_nextline(p);
                     }
-#line 10962 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10966 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 530: /* @35: %empty  */
-#line 4331 "mrbgems/mruby-compiler/core/parse.y"
+#line 4335 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push_strterm(p);
                     }
-#line 10970 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10974 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 531: /* heredoc_string_interp: tHD_STRING_PART @35 compstmt '}'  */
-#line 4336 "mrbgems/mruby-compiler/core/parse.y"
+#line 4340 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       pop_strterm(p, (yyvsp[-2].nd));
                       parser_heredoc_info *info = parsing_heredoc_info(p);
@@ -10978,37 +10982,37 @@ yyreduce:
                       node *expr_elem = cons(int_to_node(-1), (yyvsp[-1].nd));
                       info->doc = push(push(info->doc, (yyvsp[-3].nd)), expr_elem);
                     }
-#line 10982 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10986 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 532: /* words: tWORDS_BEG tSTRING  */
-#line 4346 "mrbgems/mruby-compiler/core/parse.y"
+#line 4350 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_words(p, list1((yyvsp[0].nd)));
                     }
-#line 10990 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 10994 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 533: /* words: tWORDS_BEG string_rep tSTRING  */
-#line 4350 "mrbgems/mruby-compiler/core/parse.y"
+#line 4354 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       node *n = (yyvsp[-1].nd);
                       n = push(n, (yyvsp[0].nd));
                       (yyval.nd) = new_words(p, n);
                     }
-#line 11000 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11004 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 534: /* symbol: basic_symbol  */
-#line 4358 "mrbgems/mruby-compiler/core/parse.y"
+#line 4362 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_sym(p, (yyvsp[0].id));
                     }
-#line 11008 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11012 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 535: /* symbol: "symbol" "string literal" string_rep tSTRING  */
-#line 4362 "mrbgems/mruby-compiler/core/parse.y"
+#line 4366 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       node *n = (yyvsp[-1].nd);
                       p->lstate = EXPR_ENDARG;
@@ -11020,183 +11024,183 @@ yyreduce:
                       }
                       (yyval.nd) = new_dsym(p, n);
                     }
-#line 11024 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11028 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 536: /* symbol: "symbol" "numbered parameter"  */
-#line 4374 "mrbgems/mruby-compiler/core/parse.y"
+#line 4378 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       mrb_sym sym = intern_numparam((yyvsp[0].num));
                       (yyval.nd) = new_sym(p, sym);
                     }
-#line 11033 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11037 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 537: /* basic_symbol: "symbol" sym  */
-#line 4381 "mrbgems/mruby-compiler/core/parse.y"
+#line 4385 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lstate = EXPR_END;
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 11042 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11046 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 542: /* sym: tSTRING  */
-#line 4392 "mrbgems/mruby-compiler/core/parse.y"
-                    {
-                      (yyval.id) = new_strsym(p, (yyvsp[0].nd));
-                    }
-#line 11050 "mrbgems/mruby-compiler/core/y.tab.c"
-    break;
-
-  case 543: /* sym: "string literal" tSTRING  */
 #line 4396 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = new_strsym(p, (yyvsp[0].nd));
                     }
-#line 11058 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11054 "mrbgems/mruby-compiler/core/y.tab.c"
+    break;
+
+  case 543: /* sym: "string literal" tSTRING  */
+#line 4400 "mrbgems/mruby-compiler/core/parse.y"
+                    {
+                      (yyval.id) = new_strsym(p, (yyvsp[0].nd));
+                    }
+#line 11062 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 544: /* symbols: tSYMBOLS_BEG tSTRING  */
-#line 4402 "mrbgems/mruby-compiler/core/parse.y"
+#line 4406 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_symbols(p, list1((yyvsp[0].nd)));
                     }
-#line 11066 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11070 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 545: /* symbols: tSYMBOLS_BEG string_rep tSTRING  */
-#line 4406 "mrbgems/mruby-compiler/core/parse.y"
+#line 4410 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       node *n = (yyvsp[-1].nd);
                       n = push(n, (yyvsp[0].nd));
                       (yyval.nd) = new_symbols(p, n);
                     }
-#line 11076 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11080 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 548: /* numeric: tUMINUS_NUM "integer literal"  */
-#line 4416 "mrbgems/mruby-compiler/core/parse.y"
-                    {
-                      (yyval.nd) = new_negate(p, (yyvsp[0].nd));
-                    }
-#line 11084 "mrbgems/mruby-compiler/core/y.tab.c"
-    break;
-
-  case 549: /* numeric: tUMINUS_NUM "float literal"  */
 #line 4420 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_negate(p, (yyvsp[0].nd));
                     }
-#line 11092 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11088 "mrbgems/mruby-compiler/core/y.tab.c"
+    break;
+
+  case 549: /* numeric: tUMINUS_NUM "float literal"  */
+#line 4424 "mrbgems/mruby-compiler/core/parse.y"
+                    {
+                      (yyval.nd) = new_negate(p, (yyvsp[0].nd));
+                    }
+#line 11096 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 550: /* variable: "local variable or method"  */
-#line 4426 "mrbgems/mruby-compiler/core/parse.y"
+#line 4430 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_lvar(p, (yyvsp[0].id));
                     }
-#line 11100 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11104 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 551: /* variable: "instance variable"  */
-#line 4430 "mrbgems/mruby-compiler/core/parse.y"
+#line 4434 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_ivar(p, (yyvsp[0].id));
                     }
-#line 11108 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11112 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 552: /* variable: "global variable"  */
-#line 4434 "mrbgems/mruby-compiler/core/parse.y"
+#line 4438 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_gvar(p, (yyvsp[0].id));
                     }
-#line 11116 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11120 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 553: /* variable: "class variable"  */
-#line 4438 "mrbgems/mruby-compiler/core/parse.y"
+#line 4442 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_cvar(p, (yyvsp[0].id));
                     }
-#line 11124 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11128 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 554: /* variable: "constant"  */
-#line 4442 "mrbgems/mruby-compiler/core/parse.y"
+#line 4446 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_const(p, (yyvsp[0].id));
                     }
-#line 11132 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11136 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 555: /* var_lhs: variable  */
-#line 4448 "mrbgems/mruby-compiler/core/parse.y"
+#line 4452 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       assignable(p, (yyvsp[0].nd));
                     }
-#line 11140 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11144 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 556: /* var_lhs: "numbered parameter"  */
-#line 4452 "mrbgems/mruby-compiler/core/parse.y"
+#line 4456 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[0]), p, "can't assign to numbered parameter");
                     }
-#line 11148 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11152 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 557: /* var_ref: variable  */
-#line 4458 "mrbgems/mruby-compiler/core/parse.y"
+#line 4462 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = var_reference(p, (yyvsp[0].nd));
                     }
-#line 11156 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11160 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 558: /* var_ref: "numbered parameter"  */
-#line 4462 "mrbgems/mruby-compiler/core/parse.y"
+#line 4466 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_nvar(p, (yyvsp[0].num));
                     }
-#line 11164 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11168 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 559: /* var_ref: "'nil'"  */
-#line 4466 "mrbgems/mruby-compiler/core/parse.y"
+#line 4470 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_nil(p);
                     }
-#line 11172 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11176 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 560: /* var_ref: "'self'"  */
-#line 4470 "mrbgems/mruby-compiler/core/parse.y"
+#line 4474 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_self(p);
                     }
-#line 11180 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11184 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 561: /* var_ref: "'true'"  */
-#line 4474 "mrbgems/mruby-compiler/core/parse.y"
+#line 4478 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_true(p);
                     }
-#line 11188 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11192 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 562: /* var_ref: "'false'"  */
-#line 4478 "mrbgems/mruby-compiler/core/parse.y"
+#line 4482 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_false(p);
                     }
-#line 11196 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11200 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 563: /* var_ref: "'__FILE__'"  */
-#line 4482 "mrbgems/mruby-compiler/core/parse.y"
+#line 4486 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       const char *fn = mrb_sym_name_len(p->mrb, p->filename_sym, NULL);
                       if (!fn) {
@@ -11204,714 +11208,714 @@ yyreduce:
                       }
                       (yyval.nd) = new_str(p, cons(cons(int_to_node(strlen(fn)), (node*)fn), (node*)NULL));
                     }
-#line 11208 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11212 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 564: /* var_ref: "'__LINE__'"  */
-#line 4490 "mrbgems/mruby-compiler/core/parse.y"
+#line 4494 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       char buf[16];
 
                       dump_int(p->lineno, buf);
                       (yyval.nd) = new_int(p, buf, 10, 0);
                     }
-#line 11219 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11223 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 565: /* var_ref: "'__ENCODING__'"  */
-#line 4497 "mrbgems/mruby-compiler/core/parse.y"
+#line 4501 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_fcall(p, MRB_SYM(__ENCODING__), 0);
                     }
-#line 11227 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11231 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 568: /* superclass: %empty  */
-#line 4507 "mrbgems/mruby-compiler/core/parse.y"
+#line 4511 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = 0;
                     }
-#line 11235 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11239 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 569: /* $@36: %empty  */
-#line 4511 "mrbgems/mruby-compiler/core/parse.y"
+#line 4515 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lstate = EXPR_BEG;
                       p->cmd_start = TRUE;
                     }
-#line 11244 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11248 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 570: /* superclass: '<' $@36 expr_value term  */
-#line 4516 "mrbgems/mruby-compiler/core/parse.y"
+#line 4520 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 11252 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11256 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 573: /* f_arglist_paren: '(' f_args rparen  */
-#line 4532 "mrbgems/mruby-compiler/core/parse.y"
+#line 4536 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                       p->lstate = EXPR_BEG;
                       p->cmd_start = TRUE;
                     }
-#line 11262 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11266 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 574: /* f_arglist_paren: '(' f_arg ',' tBDOT3 rparen  */
-#line 4538 "mrbgems/mruby-compiler/core/parse.y"
+#line 4542 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_dots(p, (yyvsp[-3].nd));
                     }
-#line 11270 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11274 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 575: /* f_arglist_paren: '(' tBDOT3 rparen  */
-#line 4542 "mrbgems/mruby-compiler/core/parse.y"
+#line 4546 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_dots(p, 0);
                     }
-#line 11278 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11282 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 577: /* f_arglist: f_args term  */
-#line 4549 "mrbgems/mruby-compiler/core/parse.y"
+#line 4553 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 11286 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11290 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 578: /* f_arglist: f_arg ',' tBDOT3 term  */
-#line 4553 "mrbgems/mruby-compiler/core/parse.y"
+#line 4557 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_dots(p, (yyvsp[-3].nd));
                     }
-#line 11294 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11298 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 579: /* f_arglist: "..." term  */
-#line 4557 "mrbgems/mruby-compiler/core/parse.y"
+#line 4561 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_dots(p, 0);
                     }
-#line 11302 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11306 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 580: /* f_label: "local variable or method" "label"  */
-#line 4563 "mrbgems/mruby-compiler/core/parse.y"
+#line 4567 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = (yyvsp[-1].id);
                       local_nest(p);
                       p->lstate = EXPR_MID;  /* make newlines significant after label */
                     }
-#line 11312 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11316 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 581: /* f_label: "numbered parameter" "label"  */
-#line 4569 "mrbgems/mruby-compiler/core/parse.y"
+#line 4573 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = intern_numparam((yyvsp[-1].num));
                       local_nest(p);
                       p->lstate = EXPR_MID;  /* make newlines significant after label */
                     }
-#line 11322 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11326 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 582: /* f_kw: f_label arg  */
-#line 4577 "mrbgems/mruby-compiler/core/parse.y"
+#line 4581 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = new_kw_arg(p, (yyvsp[-1].id), cons((yyvsp[0].nd), locals_node(p)));
                       local_unnest(p);
                     }
-#line 11332 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11336 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 583: /* f_kw: f_label  */
-#line 4583 "mrbgems/mruby-compiler/core/parse.y"
+#line 4587 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_kw_arg(p, (yyvsp[0].id), 0);
                       local_unnest(p);
                     }
-#line 11341 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11345 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 584: /* f_block_kw: f_label primary_value  */
-#line 4590 "mrbgems/mruby-compiler/core/parse.y"
+#line 4594 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = new_kw_arg(p, (yyvsp[-1].id), cons((yyvsp[0].nd), locals_node(p)));
                       local_unnest(p);
                     }
-#line 11351 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11355 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 585: /* f_block_kw: f_label  */
-#line 4596 "mrbgems/mruby-compiler/core/parse.y"
+#line 4600 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_kw_arg(p, (yyvsp[0].id), 0);
                       local_unnest(p);
                     }
-#line 11360 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11364 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 586: /* f_block_kwarg: f_block_kw  */
-#line 4603 "mrbgems/mruby-compiler/core/parse.y"
+#line 4607 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 11368 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11372 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 587: /* f_block_kwarg: f_block_kwarg ',' f_block_kw  */
-#line 4607 "mrbgems/mruby-compiler/core/parse.y"
+#line 4611 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 11376 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11380 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 588: /* f_kwarg: f_kw  */
-#line 4613 "mrbgems/mruby-compiler/core/parse.y"
+#line 4617 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 11384 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11388 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 589: /* f_kwarg: f_kwarg ',' f_kw  */
-#line 4617 "mrbgems/mruby-compiler/core/parse.y"
+#line 4621 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 11392 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11396 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 592: /* f_kwrest: kwrest_mark "local variable or method"  */
-#line 4627 "mrbgems/mruby-compiler/core/parse.y"
+#line 4631 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 11400 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11404 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 593: /* f_kwrest: kwrest_mark  */
-#line 4631 "mrbgems/mruby-compiler/core/parse.y"
+#line 4635 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = intern_op(pow);
                     }
-#line 11408 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11412 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 594: /* args_tail: f_kwarg ',' f_kwrest opt_f_block_arg  */
-#line 4637 "mrbgems/mruby-compiler/core/parse.y"
+#line 4641 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, (yyvsp[-3].nd), (yyvsp[-1].id), (yyvsp[0].id));
                     }
-#line 11416 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11420 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 595: /* args_tail: f_kwarg opt_f_block_arg  */
-#line 4641 "mrbgems/mruby-compiler/core/parse.y"
+#line 4645 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, (yyvsp[-1].nd), 0, (yyvsp[0].id));
                     }
-#line 11424 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11428 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 596: /* args_tail: f_kwrest opt_f_block_arg  */
-#line 4645 "mrbgems/mruby-compiler/core/parse.y"
+#line 4649 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, 0, (yyvsp[-1].id), (yyvsp[0].id));
                     }
-#line 11432 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11436 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 597: /* args_tail: f_block_arg  */
-#line 4649 "mrbgems/mruby-compiler/core/parse.y"
+#line 4653 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, 0, 0, (yyvsp[0].id));
                     }
-#line 11440 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11444 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 598: /* opt_args_tail: ',' args_tail  */
-#line 4655 "mrbgems/mruby-compiler/core/parse.y"
+#line 4659 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[0].nd);
                     }
-#line 11448 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11452 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 599: /* opt_args_tail: ','  */
-#line 4659 "mrbgems/mruby-compiler/core/parse.y"
-                    {
-                      (yyval.nd) = new_args_tail(p, 0, 0, 0);
-                    }
-#line 11456 "mrbgems/mruby-compiler/core/y.tab.c"
-    break;
-
-  case 600: /* opt_args_tail: %empty  */
 #line 4663 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args_tail(p, 0, 0, 0);
                     }
-#line 11464 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11460 "mrbgems/mruby-compiler/core/y.tab.c"
+    break;
+
+  case 600: /* opt_args_tail: %empty  */
+#line 4667 "mrbgems/mruby-compiler/core/parse.y"
+                    {
+                      (yyval.nd) = new_args_tail(p, 0, 0, 0);
+                    }
+#line 11468 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 601: /* f_args: f_arg ',' f_optarg ',' f_rest_arg opt_args_tail  */
-#line 4669 "mrbgems/mruby-compiler/core/parse.y"
+#line 4673 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-5].nd), (yyvsp[-3].nd), (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 11472 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11476 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 602: /* f_args: f_arg ',' f_optarg ',' f_rest_arg ',' f_arg opt_args_tail  */
-#line 4673 "mrbgems/mruby-compiler/core/parse.y"
+#line 4677 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-7].nd), (yyvsp[-5].nd), (yyvsp[-3].id), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 11480 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11484 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 603: /* f_args: f_arg ',' f_optarg opt_args_tail  */
-#line 4677 "mrbgems/mruby-compiler/core/parse.y"
+#line 4681 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-3].nd), (yyvsp[-1].nd), 0, 0, (yyvsp[0].nd));
                     }
-#line 11488 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11492 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 604: /* f_args: f_arg ',' f_optarg ',' f_arg opt_args_tail  */
-#line 4681 "mrbgems/mruby-compiler/core/parse.y"
+#line 4685 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-5].nd), (yyvsp[-3].nd), 0, (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 11496 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11500 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 605: /* f_args: f_arg ',' f_rest_arg opt_args_tail  */
-#line 4685 "mrbgems/mruby-compiler/core/parse.y"
+#line 4689 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-3].nd), 0, (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 11504 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11508 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 606: /* f_args: f_arg ',' f_rest_arg ',' f_arg opt_args_tail  */
-#line 4689 "mrbgems/mruby-compiler/core/parse.y"
+#line 4693 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-5].nd), 0, (yyvsp[-3].id), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 11512 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11516 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 607: /* f_args: f_arg opt_args_tail  */
-#line 4693 "mrbgems/mruby-compiler/core/parse.y"
+#line 4697 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, (yyvsp[-1].nd), 0, 0, 0, (yyvsp[0].nd));
                     }
-#line 11520 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11524 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 608: /* f_args: f_optarg ',' f_rest_arg opt_args_tail  */
-#line 4697 "mrbgems/mruby-compiler/core/parse.y"
+#line 4701 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-3].nd), (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 11528 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11532 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 609: /* f_args: f_optarg ',' f_rest_arg ',' f_arg opt_args_tail  */
-#line 4701 "mrbgems/mruby-compiler/core/parse.y"
+#line 4705 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-5].nd), (yyvsp[-3].id), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 11536 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11540 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 610: /* f_args: f_optarg opt_args_tail  */
-#line 4705 "mrbgems/mruby-compiler/core/parse.y"
+#line 4709 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-1].nd), 0, 0, (yyvsp[0].nd));
                     }
-#line 11544 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11548 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 611: /* f_args: f_optarg ',' f_arg opt_args_tail  */
-#line 4709 "mrbgems/mruby-compiler/core/parse.y"
+#line 4713 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, (yyvsp[-3].nd), 0, (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 11552 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11556 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 612: /* f_args: f_rest_arg opt_args_tail  */
-#line 4713 "mrbgems/mruby-compiler/core/parse.y"
+#line 4717 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, 0, (yyvsp[-1].id), 0, (yyvsp[0].nd));
                     }
-#line 11560 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11564 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 613: /* f_args: f_rest_arg ',' f_arg opt_args_tail  */
-#line 4717 "mrbgems/mruby-compiler/core/parse.y"
+#line 4721 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, 0, (yyvsp[-3].id), (yyvsp[-1].nd), (yyvsp[0].nd));
                     }
-#line 11568 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11572 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 614: /* f_args: args_tail  */
-#line 4721 "mrbgems/mruby-compiler/core/parse.y"
+#line 4725 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_args(p, 0, 0, 0, 0, (yyvsp[0].nd));
                     }
-#line 11576 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11580 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 615: /* f_args: %empty  */
-#line 4725 "mrbgems/mruby-compiler/core/parse.y"
+#line 4729 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, 0);
                       (yyval.nd) = new_args(p, 0, 0, 0, 0, 0);
                     }
-#line 11585 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11589 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 616: /* f_bad_arg: "constant"  */
-#line 4732 "mrbgems/mruby-compiler/core/parse.y"
+#line 4736 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[0]), p, "formal argument cannot be a constant");
                       (yyval.nd) = 0;
                     }
-#line 11594 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11598 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 617: /* f_bad_arg: "instance variable"  */
-#line 4737 "mrbgems/mruby-compiler/core/parse.y"
+#line 4741 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[0]), p, "formal argument cannot be an instance variable");
                       (yyval.nd) = 0;
                     }
-#line 11603 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11607 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 618: /* f_bad_arg: "global variable"  */
-#line 4742 "mrbgems/mruby-compiler/core/parse.y"
+#line 4746 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[0]), p, "formal argument cannot be a global variable");
                       (yyval.nd) = 0;
                     }
-#line 11612 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11616 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 619: /* f_bad_arg: "class variable"  */
-#line 4747 "mrbgems/mruby-compiler/core/parse.y"
+#line 4751 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[0]), p, "formal argument cannot be a class variable");
                       (yyval.nd) = 0;
                     }
-#line 11621 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11625 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 620: /* f_bad_arg: "numbered parameter"  */
-#line 4752 "mrbgems/mruby-compiler/core/parse.y"
+#line 4756 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       yyerror(&(yylsp[0]), p, "formal argument cannot be a numbered parameter");
                       (yyval.nd) = 0;
                     }
-#line 11630 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11634 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 621: /* f_norm_arg: f_bad_arg  */
-#line 4759 "mrbgems/mruby-compiler/core/parse.y"
+#line 4763 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = 0;
                     }
-#line 11638 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11642 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 622: /* f_norm_arg: "local variable or method"  */
-#line 4763 "mrbgems/mruby-compiler/core/parse.y"
+#line 4767 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, (yyvsp[0].id));
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 11647 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11651 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 623: /* f_arg_item: f_norm_arg  */
-#line 4770 "mrbgems/mruby-compiler/core/parse.y"
+#line 4774 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_lvar(p, (yyvsp[0].id));
                     }
-#line 11655 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11659 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 624: /* @37: %empty  */
-#line 4774 "mrbgems/mruby-compiler/core/parse.y"
+#line 4778 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = local_switch(p);
                     }
-#line 11663 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11667 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 625: /* f_arg_item: tLPAREN @37 f_margs rparen  */
-#line 4778 "mrbgems/mruby-compiler/core/parse.y"
+#line 4782 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = new_marg(p, (yyvsp[-1].nd));
                       local_resume(p, (yyvsp[-2].nd));
                       local_add_f(p, 0);
                     }
-#line 11673 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11677 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 626: /* f_arg: f_arg_item  */
-#line 4786 "mrbgems/mruby-compiler/core/parse.y"
+#line 4790 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 11681 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11685 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 627: /* f_arg: f_arg ',' f_arg_item  */
-#line 4790 "mrbgems/mruby-compiler/core/parse.y"
+#line 4794 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 11689 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11693 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 628: /* f_opt_asgn: "local variable or method" '='  */
-#line 4796 "mrbgems/mruby-compiler/core/parse.y"
+#line 4800 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, (yyvsp[-1].id));
                       local_nest(p);
                       (yyval.id) = (yyvsp[-1].id);
                     }
-#line 11699 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11703 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 629: /* f_opt: f_opt_asgn arg  */
-#line 4804 "mrbgems/mruby-compiler/core/parse.y"
+#line 4808 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = cons(sym_to_node((yyvsp[-1].id)), cons((yyvsp[0].nd), locals_node(p)));
                       local_unnest(p);
                     }
-#line 11709 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11713 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 630: /* f_block_opt: f_opt_asgn primary_value  */
-#line 4812 "mrbgems/mruby-compiler/core/parse.y"
+#line 4816 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = cons(sym_to_node((yyvsp[-1].id)), cons((yyvsp[0].nd), locals_node(p)));
                       local_unnest(p);
                     }
-#line 11719 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11723 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 631: /* f_block_optarg: f_block_opt  */
-#line 4820 "mrbgems/mruby-compiler/core/parse.y"
+#line 4824 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 11727 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11731 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 632: /* f_block_optarg: f_block_optarg ',' f_block_opt  */
-#line 4824 "mrbgems/mruby-compiler/core/parse.y"
+#line 4828 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 11735 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11739 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 633: /* f_optarg: f_opt  */
-#line 4830 "mrbgems/mruby-compiler/core/parse.y"
+#line 4834 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 11743 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11747 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 634: /* f_optarg: f_optarg ',' f_opt  */
-#line 4834 "mrbgems/mruby-compiler/core/parse.y"
+#line 4838 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 11751 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11755 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 637: /* f_rest_arg: restarg_mark "local variable or method"  */
-#line 4844 "mrbgems/mruby-compiler/core/parse.y"
+#line 4848 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       local_add_f(p, (yyvsp[0].id));
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 11760 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11764 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 638: /* f_rest_arg: restarg_mark  */
-#line 4849 "mrbgems/mruby-compiler/core/parse.y"
+#line 4853 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = intern_op(mul);
                       local_add_f(p, (yyval.id));
                     }
-#line 11769 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11773 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 641: /* f_block_arg: blkarg_mark "local variable or method"  */
-#line 4860 "mrbgems/mruby-compiler/core/parse.y"
+#line 4864 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 11777 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11781 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 642: /* f_block_arg: blkarg_mark "'nil'"  */
-#line 4864 "mrbgems/mruby-compiler/core/parse.y"
+#line 4868 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = MRB_SYM(nil);
                     }
-#line 11785 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11789 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 643: /* f_block_arg: blkarg_mark  */
-#line 4868 "mrbgems/mruby-compiler/core/parse.y"
+#line 4872 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = intern_op(and);
                     }
-#line 11793 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11797 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 644: /* opt_f_block_arg: ',' f_block_arg  */
-#line 4874 "mrbgems/mruby-compiler/core/parse.y"
+#line 4878 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = (yyvsp[0].id);
                     }
-#line 11801 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11805 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 645: /* opt_f_block_arg: ','  */
-#line 4878 "mrbgems/mruby-compiler/core/parse.y"
-                    {
-                      (yyval.id) = 0;
-                    }
-#line 11809 "mrbgems/mruby-compiler/core/y.tab.c"
-    break;
-
-  case 646: /* opt_f_block_arg: none  */
 #line 4882 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.id) = 0;
                     }
-#line 11817 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11813 "mrbgems/mruby-compiler/core/y.tab.c"
+    break;
+
+  case 646: /* opt_f_block_arg: none  */
+#line 4886 "mrbgems/mruby-compiler/core/parse.y"
+                    {
+                      (yyval.id) = 0;
+                    }
+#line 11821 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 647: /* singleton: var_ref  */
-#line 4888 "mrbgems/mruby-compiler/core/parse.y"
+#line 4892 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       prohibit_literals(p, (yyvsp[0].nd));
                       (yyval.nd) = (yyvsp[0].nd);
                       if (!(yyval.nd)) (yyval.nd) = new_nil(p);
                     }
-#line 11827 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11831 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 648: /* $@38: %empty  */
-#line 4893 "mrbgems/mruby-compiler/core/parse.y"
+#line 4897 "mrbgems/mruby-compiler/core/parse.y"
                       {p->lstate = EXPR_BEG;}
-#line 11833 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11837 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 649: /* singleton: '(' $@38 expr rparen  */
-#line 4894 "mrbgems/mruby-compiler/core/parse.y"
+#line 4898 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       prohibit_literals(p, (yyvsp[-1].nd));
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 11842 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11846 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 651: /* assoc_list: assocs trailer  */
-#line 4902 "mrbgems/mruby-compiler/core/parse.y"
+#line 4906 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = (yyvsp[-1].nd);
                     }
-#line 11850 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11854 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 652: /* assocs: assoc  */
-#line 4908 "mrbgems/mruby-compiler/core/parse.y"
+#line 4912 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = list1((yyvsp[0].nd));
                     }
-#line 11858 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11862 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 653: /* assocs: assocs comma assoc  */
-#line 4912 "mrbgems/mruby-compiler/core/parse.y"
+#line 4916 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = push((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 11866 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11870 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 654: /* assoc: arg "=>" arg  */
-#line 4918 "mrbgems/mruby-compiler/core/parse.y"
+#line 4922 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[-2].nd));
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = cons((yyvsp[-2].nd), (yyvsp[0].nd));
                     }
-#line 11876 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11880 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 655: /* assoc: "local variable or method" "label" arg  */
-#line 4924 "mrbgems/mruby-compiler/core/parse.y"
+#line 4928 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = cons(new_sym(p, (yyvsp[-2].id)), (yyvsp[0].nd));
                     }
-#line 11885 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11889 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 656: /* assoc: "local variable or method" "label"  */
-#line 4929 "mrbgems/mruby-compiler/core/parse.y"
+#line 4933 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(new_sym(p, (yyvsp[-1].id)), label_reference(p, (yyvsp[-1].id)));
                     }
-#line 11893 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11897 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 657: /* assoc: "numbered parameter" "label"  */
-#line 4933 "mrbgems/mruby-compiler/core/parse.y"
+#line 4937 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       mrb_sym sym = intern_numparam((yyvsp[-1].num));
                       (yyval.nd) = cons(new_sym(p, sym), label_reference(p, sym));
                     }
-#line 11902 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11906 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 658: /* assoc: "numbered parameter" "label" arg  */
-#line 4938 "mrbgems/mruby-compiler/core/parse.y"
+#line 4942 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = cons(new_sym(p, intern_numparam((yyvsp[-2].num))), (yyvsp[0].nd));
                     }
-#line 11911 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11915 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 659: /* assoc: string_fragment "label" arg  */
-#line 4943 "mrbgems/mruby-compiler/core/parse.y"
+#line 4947 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       if ((yyvsp[-2].nd)->cdr) {
@@ -11927,75 +11931,75 @@ yyreduce:
                         (yyval.nd) = cons(new_sym(p, new_strsym(p, (yyvsp[-2].nd)->car)), (yyvsp[0].nd));
                       }
                     }
-#line 11931 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11935 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 660: /* assoc: "**" arg  */
-#line 4959 "mrbgems/mruby-compiler/core/parse.y"
+#line 4963 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       void_expr_error(p, (yyvsp[0].nd));
                       (yyval.nd) = cons(new_kw_rest_args(p, 0), (yyvsp[0].nd));
                     }
-#line 11940 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11944 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 661: /* assoc: "**"  */
-#line 4964 "mrbgems/mruby-compiler/core/parse.y"
+#line 4968 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = cons(new_kw_rest_args(p, 0), new_lvar(p, intern_op(pow)));
                     }
-#line 11948 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11952 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 674: /* call_op: '.'  */
-#line 4990 "mrbgems/mruby-compiler/core/parse.y"
+#line 4994 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.num) = '.';
                     }
-#line 11956 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11960 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 675: /* call_op: "&."  */
-#line 4994 "mrbgems/mruby-compiler/core/parse.y"
+#line 4998 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.num) = 0;
                     }
-#line 11964 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11968 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 677: /* call_op2: "::"  */
-#line 5001 "mrbgems/mruby-compiler/core/parse.y"
+#line 5005 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.num) = tCOLON2;
                     }
-#line 11972 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11976 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 686: /* term: ';'  */
-#line 5022 "mrbgems/mruby-compiler/core/parse.y"
+#line 5026 "mrbgems/mruby-compiler/core/parse.y"
                       {yyerrok;}
-#line 11978 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11982 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 688: /* nl: '\n'  */
-#line 5027 "mrbgems/mruby-compiler/core/parse.y"
+#line 5031 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       p->lineno += (yyvsp[0].num);
                       p->column = 0;
                     }
-#line 11987 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11991 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
   case 692: /* none: %empty  */
-#line 5039 "mrbgems/mruby-compiler/core/parse.y"
+#line 5043 "mrbgems/mruby-compiler/core/parse.y"
                     {
                       (yyval.nd) = 0;
                     }
-#line 11995 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 11999 "mrbgems/mruby-compiler/core/y.tab.c"
     break;
 
 
-#line 11999 "mrbgems/mruby-compiler/core/y.tab.c"
+#line 12003 "mrbgems/mruby-compiler/core/y.tab.c"
 
       default: break;
     }
@@ -12228,7 +12232,7 @@ yyreturnlab:
   return yyresult;
 }
 
-#line 5043 "mrbgems/mruby-compiler/core/parse.y"
+#line 5047 "mrbgems/mruby-compiler/core/parse.y"
 
 #define pylval  (*((YYSTYPE*)(p->ylval)))
 
@@ -14847,6 +14851,10 @@ mrb_parser_set_filename(struct mrb_parser_state *p, const char *f)
 
   sym = mrb_intern_cstr(p->mrb, f);
   p->filename_sym = sym;
+  /* Save current lineno so that AST nodes produced from a bison lookahead
+     across the file boundary (in partial_hook) can recover the correct
+     line in init_var_header instead of recording lineno=0. */
+  p->prev_file_lineno = p->lineno;
   p->lineno = (p->filename_table_length > 0)? 0 : 1;
 
   for (i = 0; i < p->filename_table_length; i++) {