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speckit.git.feature.md

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description Create a feature branch with sequential or timestamp numbering

Create Feature Branch

Create a new feature branch for the given specification.

User Input

$ARGUMENTS

You MUST consider the user input before proceeding (if not empty).

Prerequisites

  • Verify Git is available by running git rev-parse --is-inside-work-tree 2>/dev/null
  • If Git is not available, warn the user and skip branch creation (spec directory will still be created)

Branch Numbering Mode

Determine the branch numbering strategy by checking configuration in this order:

  1. Check .specify/extensions/git/git-config.yml for branch_numbering value
  2. Check .specify/init-options.json for branch_numbering value (backward compatibility)
  3. Default to sequential if neither exists

Execution

Generate a concise short name (2-4 words) for the branch:

  • Analyze the feature description and extract the most meaningful keywords
  • Use action-noun format when possible (e.g., "add-user-auth", "fix-payment-bug")
  • Preserve technical terms and acronyms (OAuth2, API, JWT, etc.)

Run the appropriate script based on your platform:

  • Bash: .specify/extensions/git/scripts/bash/create-new-feature.sh --json --short-name "<short-name>" "<feature description>"
  • Bash (timestamp): .specify/extensions/git/scripts/bash/create-new-feature.sh --json --timestamp --short-name "<short-name>" "<feature description>"
  • PowerShell: .specify/extensions/git/scripts/powershell/create-new-feature.ps1 -Json -ShortName "<short-name>" "<feature description>"
  • PowerShell (timestamp): .specify/extensions/git/scripts/powershell/create-new-feature.ps1 -Json -Timestamp -ShortName "<short-name>" "<feature description>"

IMPORTANT:

  • Do NOT pass --number — the script determines the correct next number automatically
  • Always include the JSON flag (--json for Bash, -Json for PowerShell) so the output can be parsed reliably
  • You must only ever run this script once per feature
  • The JSON output will contain BRANCH_NAME and SPEC_FILE paths

If the extension scripts are not found at the .specify/extensions/git/ path, fall back to:

  • Bash: scripts/bash/create-new-feature.sh
  • PowerShell: scripts/powershell/create-new-feature.ps1

Graceful Degradation

If Git is not installed or the current directory is not a Git repository:

  • The script will still create the spec directory under specs/
  • A warning will be printed: [specify] Warning: Git repository not detected; skipped branch creation
  • The workflow continues normally without branch creation

Output

The script outputs JSON with:

  • BRANCH_NAME: The created branch name (e.g., 003-user-auth or 20260319-143022-user-auth)
  • SPEC_FILE: Path to the created spec file
  • FEATURE_NUM: The numeric or timestamp prefix used