Add syntax highlighting to mirb's multi-line editor with support for:
- keywords (def, if, class, end, etc.) in magenta
- strings ("...", '...', %q{...}) in green
- comments (#...) in gray
- numbers (42, 3.14, 0xff) in cyan
- symbols (:foo) in yellow
- constants (Array, Foo) in bold yellow
- instance variables (@var) in blue
- global variables ($var) in bold blue
Features:
- auto-detects light/dark theme via COLORFGBG env var
- MIRB_THEME=light/dark for explicit override
- method calls like obj.class correctly not highlighted as keywords
- enabled automatically when terminal supports color
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>
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>
Yukihiro "Matz" Matsumoto