Before inserting a newline, re-indent the current line to match
the expected indent level. This fixes cases where the user typed
with incorrect indentation.
Co-authored-by: Claude <noreply@anthropic.com>
When TAB triggers auto-indentation, preserve the cursor's relative
position within the line instead of moving it to the indent boundary.
Co-authored-by: Claude <noreply@anthropic.com>
Instead of just removing 2 spaces, perform_dedent() now calculates
the expected indent level from previous lines and aligns to that.
Co-authored-by: Claude <noreply@anthropic.com>
Extend auto-dedent to trigger when typing dedent keywords, not just
end and }. Now dedent occurs when completing: else, elsif, when,
rescue, ensure.
Co-authored-by: Claude <noreply@anthropic.com>
When splitting a line with Enter, check if the new line starts with
a dedenting keyword (end, else, elsif, when, rescue, ensure, }) and
reduce indentation by one level.
Co-authored-by: Claude <noreply@anthropic.com>
TAB now performs auto-indentation instead of completion when:
- cursor is at start of line
- cursor is at end of line
- character before cursor is whitespace
Auto-indent calculates expected indent level from previous lines
and adjusts current line. Dedenting keywords (end, else, elsif,
when, rescue, ensure, }) reduce indent by one level.
Co-authored-by: Claude <noreply@anthropic.com>
when pressing Ctrl+K on an empty line, delete the entire line instead
of doing nothing. this makes it easier to clean up empty lines while
editing multi-line input.
Co-authored-by: Claude <noreply@anthropic.com>
pressing Enter in the middle of multi-line input now always inserts
a new line instead of evaluating, even if the code is syntactically
complete. evaluation only occurs when cursor is at the end of the
last line.
Co-authored-by: Claude <noreply@anthropic.com>
- restore mirb_completion.c/h from before readline removal
- add editor adapter for tab completion (mirb_setup_editor_completion,
mirb_get_completions, mirb_free_completions)
- add TAB key handling in mirb_editor.c
- fix string literal completion: properly detect when cursor is outside
a string by scanning forward, allow string/array/hash literals as
safe receivers for method completion
Co-authored-by: Claude <noreply@anthropic.com>
- fix Enter in middle of line with trailing blank continuation line:
now properly splits the line and removes redundant blank line
- fix auto-indentation when inserting in middle of existing code:
calculate indent from lines up to cursor, not entire buffer
- add mirb_buffer_delete_line() for removing lines from buffer
Co-authored-by: Claude <noreply@anthropic.com>
Previously, all continuation lines showed the same line number (e.g.,
"1*" for every line). Now each line shows its actual line number:
1> class Foo
2* def bar
3* end
4* end
Add mirb_editor_set_prompt_format() which accepts printf-style format
strings (e.g., "%d> ", "%d* ") and calculates the correct prompt length
for each line to ensure proper cursor positioning.
Co-authored-by: Claude <noreply@anthropic.com>
Add in-memory command history for mirb sessions:
- Up arrow on first line: navigate to older history entries
- Down arrow on last line: navigate to newer history entries
- Current input is preserved when browsing and restored when
navigating past the newest entry
- History uses a circular buffer (100 entries max)
- Duplicate consecutive entries are not added
Co-authored-by: Claude <noreply@anthropic.com>
Remove readline/linenoise dependency and implement custom multi-line
editor with:
- Terminal raw mode handling (POSIX termios)
- Multi-line buffer with cursor navigation
- Auto-indentation for Ruby blocks
- Auto-dedentation when typing 'end' or '}'
- Natural terminal scrolling behavior
- Emacs-style keybindings (Ctrl+A/E/K/U/W/Y, Alt+B/F/D)
This eliminates GPL licensing concerns from readline while providing
better multi-line editing than the previous single-line implementation.
The MRUBY_MIRB_READLINE environment variable is no longer supported
as readline integration has been completely removed; ref #6626
Co-authored-by: Claude <noreply@anthropic.com>
Add ANSI color support to mirb for better visual distinction:
- green prompts (both ready '>' and continuation '*')
- red error messages (syntax errors, runtime errors, warnings)
- bold result indicator ('=>')
Colors are automatically disabled when:
- output is not a TTY
- TERM is unset or "dumb"
- NO_COLOR environment variable is set
Co-authored-by: Claude <noreply@anthropic.com>
- automatically indent continuation lines based on block depth
- detect block-opening keywords (def, class, if, do, etc.) and braces
- use ANSI escape sequences to fix indentation for:
- block-closing keywords (end, })
- mid-block keywords (else, elsif, rescue, ensure, when)
- only active for interactive TTY input with ANSI support
- requires GNU readline (not available with linenoise)
Co-authored-by: Claude <noreply@anthropic.com>
added parentheses to to_enum call where the return value is used,
explicitly specifying :each for readability.
Co-authored-by: Claude <noreply@anthropic.com>
added parentheses to to_enum call where the return value is used,
explicitly specifying :each for readability.
Co-authored-by: Claude <noreply@anthropic.com>
fixed a bug where tab completion on complex expressions like "d.new(1).a"
would corrupt local variables, causing them to become nil.
the root cause was that evaluating complex receiver expressions during tab
completion ran mrb_vm_run() without proper stack management (stack_keep)
and environment adjustment that mirb's main REPL loop performs. this
corrupted the local variable storage.
the fix restricts tab completion to only evaluate simple receiver
expressions (variable/constant names without operators or method calls).
complex expressions are skipped for completion. this means:
- works: d.<tab> completes methods of variable d
- works: String.<tab> completes methods of constant String
- skipped: d.new(1).<tab> provides no completion
this is a reasonable trade-off that prevents the corruption bug while
still supporting the most common completion scenarios.
also updated mirb_eval_receiver() to use the compiler context for proper
local variable resolution, with argument order matching mrb_parse_string.
Co-authored-by: Claude <noreply@anthropic.com>
implements context-aware tab completion for mirb supporting all readline
variants (GNU readline, libedit, linenoise) with graceful degradation
when no readline library is available.
completion features:
- method names on objects (e.g., "hello".re<Tab> completes to reverse, replace)
- local variables from compiler context
- global variables via Ruby introspection
- constants and class names
- Ruby keywords
architecture:
- core completion engine is library-agnostic
- thin adapters for readline/libedit and linenoise
- context detection based on cursor position analysis
- safe receiver evaluation with exception handling
- proper word break characters so "String.new" works correctly
implementation adds:
- mirb_completion.h: interface definitions and data structures
- mirb_completion.c: complete implementation (~670 lines)
- mirb.c: integration with setup/cleanup calls
Co-authored-by: Claude <noreply@anthropic.com>
addresses #6626 where users building portable binaries need explicit control
over readline detection instead of auto-detection.
MRUBY_MIRB_READLINE values:
auto (default) - auto-detect: try readline, then edit, then linenoise
readline, gnu - force GNU readline only
edit, libedit - force libedit only
linenoise - force linenoise only
none, off, false, disabled - use plain input mode (no readline)
close#6626
Co-authored-by: Claude <noreply@anthropic.com>
runtime errors now distinguish between:
- errors in current input: show relative line number
- errors from previously defined methods: show method context
examples:
1> a.foo
line 1: undefined method 'a' for Object (NoMethodError)
1> def foo
2* bar
3* end
1> foo
(mirb):in foo: undefined method 'bar' for Object (NoMethodError)
this provides better context since method name is more useful
than line number for errors in previously defined code
Co-authored-by: Claude <noreply@anthropic.com>
syntax errors now show:
- line:column format with relative line numbers (matching prompt)
- source line from user input
- caret indicator pointing to error position
example:
1> x = @@@
line 1:6: syntax error, unexpected invalid token
x = @@@
^
multi-line example:
1> class Foo
2* def bar
3* x = @@@
line 3:6: syntax error, unexpected invalid token
x = @@@
^
Co-authored-by: Claude <noreply@anthropic.com>
add minimal line number decoration to prompts to help track position
within multi-line code blocks. format is 'N>' for initial line and
'N*' for continuation lines. line counter resets after each complete
evaluation for clarity and minimal visual noise.
example:
1> def foo
2* x = 1
3* end
=> :foo
1> 1 + 1
=> 2
Co-authored-by: Claude <noreply@anthropic.com>
add 24 test cases covering all benchmark functionality:
- Benchmark.measure and Benchmark.realtime
- Benchmark::Tms class and its methods (total, to_s, format)
- Benchmark.bm for formatted comparison reports
- Benchmark::Report class
- memory tracking with ObjectSpace integration
- consistency and realistic usage scenarios
suppress output during tests by temporarily setting $stdout to nil
for tests that call Benchmark.bm or Report#report to avoid printing
garbage during test execution.
all tests pass successfully.
Co-authored-by: Claude <noreply@anthropic.com>
fix implementation to work correctly in mruby:
- use String#% instead of sprintf for formatting
- use $stdout directly for output instead of bare print/puts
- add nil check for $stdout to handle test environments
- use Object.const_defined? instead of defined? keyword
- create new Tms instance with label instead of instance_variable_set
- add dependencies: mruby-sprintf and mruby-io
Co-authored-by: Claude <noreply@anthropic.com>
Yukihiro "Matz" Matsumoto