# Phase 3 Testing Guide: Enhanced Editing

This document outlines how to test the new Phase 3 features.

## Prerequisites
Build the project:
```bash
cd /Users/user/Projects/lumacs
cmake --build build
```

Start editor with a test file:
```bash
./build/lumacs test_highlight.lua
```

## 1. Word Operations

### Kill Word (M-d)
1. Place cursor at the beginning of a word (e.g., "local").
2. Press `M-d` (Meta+d or ESC then d).
3. **Expected:** The word "local" is deleted.
4. Move cursor elsewhere and press `C-y`.
5. **Expected:** "local" is pasted (yanked).

### Backward Kill Word (M-Backspace)
1. Place cursor at the end of a word.
2. Press `M-Backspace` (Meta+Backspace or ESC then Backspace).
3. **Expected:** The word before cursor is deleted.
4. Press `C-y`.
5. **Expected:** Deleted word is pasted.

## 2. Case Conversion

### Word Case (M-u, M-l, M-c)
1. Type "hello world".
2. Cursor at start of "hello".
3. Press `M-u` (upcase-word).
   - **Expected:** "HELLO world", cursor after "HELLO".
4. Press `M-l` (downcase-word).
   - **Expected:** "hello world", cursor after "world" (since it moved forward).
5. Move back to start. Press `M-c` (capitalize-word).
   - **Expected:** "Hello world".

### Region Case (C-x C-u, C-x C-l)
1. Select "Hello World" (using `C-@` and movement).
2. Press `C-x C-u`.
   - **Expected:** "HELLO WORLD".
3. Select again. Press `C-x C-l`.
   - **Expected:** "hello world".

## 3. Commenting (M-;)

1. Open a lua file (e.g., `test_highlight.lua`).
2. Place cursor on a line of code.
3. Press `M-;`.
   - **Expected:** Line is commented (`-- code`).
4. Press `M-;` again.
   - **Expected:** Line is uncommented.
5. Select multiple lines.
6. Press `M-;`.
   - **Expected:** All lines commented.
7. Press `M-;` again.
   - **Expected:** All lines uncommented.

## 4. Incremental Search (C-s, C-r)

### Forward Search (C-s)
1. Press `C-s`. Status line should show `[I-SEARCH]`.
2. Type "fun".
   - **Expected:** Cursor moves to first "fun", match highlighted in green.
   - Minibuffer shows "I-search: fun".
3. Press `C-s` again.
   - **Expected:** Moves to next occurrence.
4. Press `Backspace`.
   - **Expected:** Goes back to "fu" search result.
5. Press `RET`.
   - **Expected:** Search ends, cursor stays at match.

### Backward Search (C-r)
1. Go to end of buffer (`M->`).
2. Press `C-r`. Status shows `[I-SEARCH]`.
3. Type "local".
   - **Expected:** Finds last "local" in file.
4. Press `C-r` again.
   - **Expected:** Finds previous occurrence.
5. Press `C-g` (or ESC).
   - **Expected:** Cancel search, cursor returns to start position (end of buffer).

## Debugging
Check `lumacs_debug.log` for details.