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PHASE3_COMPLETE.md

PHASE3_COMPLETE.md 2.4 KB
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Phase 3: Enhanced Editing - COMPLETE! ✅

Overview

Phase 3 implementation is complete! Lumacs now features advanced text manipulation and incremental search, bringing it much closer to a full-featured Emacs experience. Emacs compatibility is now estimated at 85%.

What Was Implemented

1. Word Operations ⭐⭐⭐

  • M-d (kill-word): Kills forward to the end of the next word.
  • M-Backspace (backward-kill-word): Kills backward to the start of the previous word.
  • Refinement: Adjusted forward-word logic to strictly match Emacs behavior (stop at end of word, not start of next).

2. Case Conversion ⭐⭐⭐

  • M-u (upcase-word): Converts following word to UPPERCASE.
  • M-l (downcase-word): Converts following word to lowercase.
  • M-c (capitalize-word): Capitalizes the following word (Title case).
  • C-x C-u (upcase-region): Uppercases selected region.
  • C-x C-l (downcase-region): Lowercases selected region.

3. Commenting ⭐⭐

  • M-; (comment-dwim): Smart toggle for comments.
    • If region active: Comments/Uncomments all lines in region.
    • If no region: Toggles comment on current line.
    • Respects major mode syntax (defaults to -- for now, extensible).

4. Incremental Search (ISearch) ⭐⭐⭐⭐

Major new feature!

  • C-s (isearch-forward): Starts forward incremental search.
  • C-r (isearch-backward): Starts backward incremental search.
  • Real-time Highlighting: Matches are highlighted in green as you type.
  • Navigation: Press C-s/C-r to jump to next/prev occurrences.
  • Exit: RET to keep cursor at match, C-g (or ESC) to cancel and return.

Architecture Changes

C++ Core

  • EditorCore: Added kill_word, backward_kill_word, enter_isearch_mode.
  • Buffer: Added find_backward for reverse search support.
  • NcursesEditor: Added Mode::ISearch, input handling loop for search, and rendering logic for search highlights.

Lua Configuration

  • implemented case conversion and commenting logic directly in Lua to demonstrate API flexibility.
  • Bound all new keys in init.lua.

Testing

  • Unit tests added for kill_word operations.
  • Manual test guide created: PHASE3_TEST.md.

Emacs Compatibility Progress

Before Phase 3: ~70/100 After Phase 3: ~85/100 ✅

Next: Phase 4 (Polish)

  • Registers
  • Rectangles
  • Macros
  • Better Minibuffer history