dtsong/git-branch

Scope Constraints

• Write operation — creates new local branches and switches to them
• Does not push to remote — use push or sync skill for that
• Does not delete branches — use delete-branch skill for that
• Does not create PRs — use github-workflow for that

Input Sanitization

• Branch names: only alphanumeric characters, hyphens, underscores, and forward slashes. Reject spaces, .., shell metacharacters, or null bytes.
• Base branch (--from): must be a valid existing ref. Reject shell metacharacters and .. traversal.

/git-branch - Create New Branch

Create a new branch with proper naming conventions, optionally from a specific base.

Usage

/git-branch feat/dark-mode           # Create feature branch
/git-branch fix/login-bug            # Create bugfix branch
/git-branch feat/api-v2 --from main  # Create from specific base
/git-branch --suggest "add login"    # Suggest branch name from description

Naming Conventions

| Prefix | Use For | Example | |--------|---------|---------| | feat/ | New features | feat/dark-mode | | fix/ | Bug fixes | fix/login-validation | | refactor/ | Code refactoring | refactor/auth-module | | docs/ | Documentation | docs/api-reference | | test/ | Test additions/fixes | test/auth-coverage | | chore/ | Maintenance tasks | chore/update-deps | | hotfix/ | Urgent production fixes | hotfix/security-patch |

Workflow

Step 1: Validate Branch Name

BRANCH_NAME="$1"

# Check for valid prefix
if [[ ! "$BRANCH_NAME" =~ ^(feat|fix|refactor|docs|test|chore|hotfix)/ ]]; then
    echo "Warning: Branch name doesn't follow conventions."
    echo "Recommended prefixes: feat/, fix/, refactor/, docs/, test/, chore/, hotfix/"
fi

# Check for invalid characters
if [[ "$BRANCH_NAME" =~ [[:space:]] ]]; then
    echo "Error: Branch name cannot contain spaces. Use hyphens instead."
    exit 1
fi

# Check length
if [ ${#BRANCH_NAME} -gt 50 ]; then
    echo "Warning: Branch name is quite long. Consider shortening."
fi

Step 2: Check for Uncommitted Changes

if ! git diff --quiet || ! git diff --cached --quiet; then
    echo "You have uncommitted changes."
    echo "Options:"
    echo "  /git-stash - Stash changes first"
    echo "  /commit - Commit changes first"
    exit 1
fi

Step 3: Determine Base Branch

# Default to current branch, or use specified base
BASE_BRANCH="${FROM_BRANCH:-$(git branch --show-current)}"

# Fetch to ensure we have latest
git fetch origin "$BASE_BRANCH" 2>/dev/null || true

Step 4: Create and Switch to Branch

# Create branch from base
git checkout -b "$BRANCH_NAME" "$BASE_BRANCH"

# Set up tracking if base has remote
if git rev-parse --verify "origin/$BASE_BRANCH" >/dev/null 2>&1; then
    echo "Created from origin/$BASE_BRANCH (latest)"
fi

Output Format

Successful Creation

Created branch: feat/dark-mode

Base: main (up to date with origin/main)
Current position: abc1234 Latest commit on main

Branch is local only. To publish:
  /git-push -u

Next steps:
  - Make your changes
  - /commit to commit
  - /git-push to publish
  - /commit-push-pr to create PR

Branch Name Suggestion

When using --suggest:

Suggested branch names for "add user login feature":

  1. feat/user-login (Recommended)
  2. feat/add-user-login
  3. feat/login-feature

Enter your choice or provide custom name:

Branch Already Exists

Branch 'feat/dark-mode' already exists.

Options:
  /git-switch feat/dark-mode    # Switch to existing branch
  /git-branch feat/dark-mode-v2 # Create with different name

Branch Name Generator

When --suggest is used, generate names based on description:

1. Extract key words from description
2. Remove stop words (a, the, and, etc.)
3. Join with hyphens
4. Add appropriate prefix
5. Limit to ~30 characters

# Example: "fix the authentication bug in login form"
# Result: fix/auth-bug-login-form

Validation Rules

1. Must have valid prefix (warning if missing)
2. No spaces (use hyphens)
3. No special characters except -, /, _
4. Reasonable length (<50 chars recommended)
5. Lowercase preferred (warning if uppercase)
6. No double hyphens or slashes

Tips

• Use descriptive but concise names
• Include ticket number if applicable: feat/JIRA-123-dark-mode
• Start from an up-to-date base: --from main after pulling
• One branch per feature/fix (keep scope small)

Integration

• Use /git-switch to change between branches
• Use /git-branches to see all branches
• Use /commit-push-pr when ready to create PR

References

| Path | Load Condition | Content Summary | |------|---------------|-----------------| | ../../references/naming-conventions.md | Branch name validation | Branch naming convention rules and prefix definitions |