/split

!# Source utility scripts

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)" source "$SCRIPT_DIR/../hooks/jj-state.sh" source "$SCRIPT_DIR/../hooks/jj-templates.sh" source "$SCRIPT_DIR/../hooks/jj-diff-context.sh" source "$SCRIPT_DIR/../hooks/pattern-expand.sh"

!# Validate pattern argument

if [ -z "$ARGUMENTS" ]; then echo "❌ Error: Pattern required" echo "" echo "Usage: `/jj:split <pattern>`" echo "" echo "Common patterns:" echo "- `test` - Test and spec files" echo "- `docs` - Documentation (.md, README, CHANGELOG)" echo "- `config` - Config files (.json, .yaml, .toml)" echo "- Custom glob patterns (e.g., `.md`, `src/**/.test.ts`)" echo "" echo "What it does:" echo "1. Keeps wanted changes in current commit (@)" echo "2. Moves unwanted (matching pattern) changes to new child commit" echo "3. Auto-generates description for child commit" echo "" echo "Example: `/jj:split test` - splits test files into new child commit" exit 0 fi

Context

• Current status: !jj status
• Current commit: !format_commit_short
• Changed files: !get_diff_summary

Your Task

Split unwanted changes matching pattern "$ARGUMENTS" from current commit (@) into a new child commit with an AI-generated description.

Pattern Expansion (handled by expand_pattern function):

• test → Test files: *test*.{py,js,ts,jsx,tsx,java,go,rs,cpp,c,h}, *spec*, test_*, *_test.*
• docs → Documentation: *.md, README*, CHANGELOG*, LICENSE*, docs/**/*
• config → Config files: *.json, *.yaml, *.yml, *.toml, *.ini, *.conf, .*rc, .*ignore
• Custom patterns → Use as-is (glob syntax)

Use: PATTERNS=$(expand_pattern "$ARGUMENTS") to get the appropriate jj move flags.

Workflow:

1. Identify matching files - Show which files in current commit match the pattern
2. Create child commit - jj new @ to create empty child where split changes will go
3. Move matching changes - jj move --from @- -p 'glob:pattern' to move unwanted files from parent to child
4. Generate description - Use ~/bin/jj-ai-desc.py @ to analyze split changes and generate commit message
5. Show result - Display final commit structure

Result structure:

@ (new child): unwanted changes with AI description
@- (original): wanted changes, original description preserved

Important notes:

• Use multiple -p flags for multiple patterns: jj move --from @- -p 'glob:*.md' -p 'glob:README*'
• Always quote glob patterns: 'glob:pattern'
• The original commit description stays intact, only the unwanted changes move
• If no files match, inform user and suggest alternatives
• After moving, the AI will analyze what was split and generate an appropriate description

Example execution:

# Get patterns using expand_pattern function
PATTERNS=$(expand_pattern "$ARGUMENTS")

# Split test files
jj new @
eval "jj move --from @- $PATTERNS"  # eval needed to expand the pattern flags
~/bin/jj-ai-desc.py @

# Or manually for specific cases:
# Split test files
jj new @
jj move --from @- $(expand_pattern "test")
~/bin/jj-ai-desc.py @

# Split documentation
jj new @
jj move --from @- $(expand_pattern "docs")
~/bin/jj-ai-desc.py @

# Split config files
jj new @
jj move --from @- $(expand_pattern "config")
~/bin/jj-ai-desc.py @

Final verification:

Show the result: !format_commit_list '@|@-'