Create Git Commit

Create a git commit with a properly formatted message, working around sandbox heredoc limitations.

Instructions

1. Check what to commit

# See status
git status

# See staged changes
git diff --cached --stat

# See recent commits for style reference
git log --oneline -5

# Extract Linear ticket ID from branch name (if present)
git branch --show-current | grep -oiE 'thr-[0-9]+' | tr '[:lower:]' '[:upper:]'

2. Write the commit message to a temp file

The sandbox blocks heredocs, so write the message to a file first using printf:

# Single-line message
printf '%s\n' 'type: short description' > /tmp/claude/commit-msg.txt

# Multi-line message (each line as a separate argument)
printf '%s\n' \
  'type: short description' \
  '' \
  '- Detail 1' \
  '- Detail 2' \
  '' \
  '🤖 Generated with [Claude Code](https://claude.com/claude-code)' \
  '' \
  'Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>' \
  > /tmp/claude/commit-msg.txt

3. Stage and commit

# Stage specific files (never use git add .)
git add path/to/file1.ts path/to/file2.ts

# Commit using the file
git commit -F /tmp/claude/commit-msg.txt

4. Clean up

rm /tmp/claude/commit-msg.txt

Commit Message Format

Follow conventional commits with Linear ticket ID when available:

• feat(THR-XX): - New feature
• fix(THR-XX): - Bug fix
• refactor(THR-XX): - Code restructuring
• docs(THR-XX): - Documentation
• test(THR-XX): - Tests
• chore(THR-XX): - Maintenance

If no Linear ticket exists, omit the parenthetical: feat: description

Always include the Claude Code attribution at the end:

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Common Issues

Heredoc fails with "can't create temp file": This is expected in sandbox mode. Use printf approach instead.

Special characters in message: Use single quotes to prevent shell expansion. For apostrophes, end the quote, add escaped apostrophe, restart quote:

printf '%s\n' 'Don'\''t do this' > /tmp/claude/commit-msg.txt

Examples

Simple commit:

printf '%s\n' 'fix: correct typo in README' '' '🤖 Generated with [Claude Code](https://claude.com/claude-code)' '' 'Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>' > /tmp/claude/commit-msg.txt
git add README.md && git commit -F /tmp/claude/commit-msg.txt

Multi-line commit:

printf '%s\n' \
  'refactor: extract helper function' \
  '' \
  '- Moved validation logic to separate function' \
  '- Added unit tests' \
  '- Updated callers' \
  '' \
  '🤖 Generated with [Claude Code](https://claude.com/claude-code)' \
  '' \
  'Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>' \
  > /tmp/claude/commit-msg.txt
git add src/utils.ts src/utils.test.ts && git commit -F /tmp/claude/commit-msg.txt