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mruby-bin-mirb: add auto-dedent for 'in' keyword

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add support for automatic dedentation when typing 'in' at the
beginning of a line, matching the behavior of 'when' for pattern
matching case/in expressions.

Co-authored-by: Claude <noreply@anthropic.com>
This commit is contained in:
Yukihiro "Matz" Matsumoto
2025-12-18 10:57:45 +09:00
parent fb52c1eea2
commit 814b0cccd9
1 changed files with 6 additions and 0 deletions
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mrbgems/mruby-bin-mirb/tools/mirb/mirb_editor.c
+6
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@@ -189,6 +189,9 @@ should_dedent(mirb_buffer *buf, char last_char)
/* Check for 'when' - dedent when 'n' completes "when" */
CHECK_KEYWORD("when", 4, 'n');
/* Check for 'in' - dedent when 'n' completes "in" (pattern matching) */
CHECK_KEYWORD("in", 2, 'n');
/* Check for 'rescue' - dedent when 'e' completes "rescue" */
CHECK_KEYWORD("rescue", 6, 'e');
@@ -274,6 +277,7 @@ reindent_line(mirb_buffer *buf)
(content[4] == '\0' || content[4] == ' ' || content[4] == '\t')) ||
(strncmp(content, "elsif", 5) == 0 && content[5] == ' ') ||
(strncmp(content, "when", 4) == 0 && content[4] == ' ') ||
(strncmp(content, "in", 2) == 0 && content[2] == ' ') ||
(strncmp(content, "rescue", 6) == 0 &&
(content[6] == '\0' || content[6] == ' ' || content[6] == '\t')) ||
(strncmp(content, "ensure", 6) == 0 &&
@@ -454,6 +458,7 @@ handle_tab_indent(mirb_editor *ed)
(content[4] == '\0' || content[4] == ' ' || content[4] == '\t')) ||
(strncmp(content, "elsif", 5) == 0 && content[5] == ' ') ||
(strncmp(content, "when", 4) == 0 && content[4] == ' ') ||
(strncmp(content, "in", 2) == 0 && content[2] == ' ') ||
(strncmp(content, "rescue", 6) == 0 &&
(content[6] == '\0' || content[6] == ' ' || content[6] == '\t')) ||
(strncmp(content, "ensure", 6) == 0 &&
@@ -811,6 +816,7 @@ handle_key(mirb_editor *ed, int key, mirb_edit_result *result)
(content[4] == '\0' || content[4] == ' ' || content[4] == '\t')) ||
(strncmp(content, "elsif", 5) == 0 && content[5] == ' ') ||
(strncmp(content, "when", 4) == 0 && content[4] == ' ') ||
(strncmp(content, "in", 2) == 0 && content[2] == ' ') ||
(strncmp(content, "rescue", 6) == 0 &&
(content[6] == '\0' || content[6] == ' ' || content[6] == '\t')) ||
(strncmp(content, "ensure", 6) == 0 &&