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feat: create extensions/git with manifest, commands, scripts, and auto-install in init
Co-authored-by: mnriem <15701806+mnriem@users.noreply.github.com> Agent-Logs-Url: https://github.com/github/spec-kit/sessions/809a1dbf-1301-4312-b4d2-e18f9b3e8b2f
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copilot-swe-agent[bot]
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329
extensions/git/scripts/powershell/create-new-feature.ps1
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329
extensions/git/scripts/powershell/create-new-feature.ps1
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@@ -0,0 +1,329 @@
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#!/usr/bin/env pwsh
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# Create a new feature
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[CmdletBinding()]
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param(
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[switch]$Json,
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[string]$ShortName,
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[Parameter()]
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[int]$Number = 0,
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[switch]$Timestamp,
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[switch]$Help,
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[Parameter(Position = 0, ValueFromRemainingArguments = $true)]
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[string[]]$FeatureDescription
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)
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$ErrorActionPreference = 'Stop'
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# Show help if requested
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if ($Help) {
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Write-Host "Usage: ./create-new-feature.ps1 [-Json] [-ShortName <name>] [-Number N] [-Timestamp] <feature description>"
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Write-Host ""
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Write-Host "Options:"
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Write-Host " -Json Output in JSON format"
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Write-Host " -ShortName <name> Provide a custom short name (2-4 words) for the branch"
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Write-Host " -Number N Specify branch number manually (overrides auto-detection)"
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Write-Host " -Timestamp Use timestamp prefix (YYYYMMDD-HHMMSS) instead of sequential numbering"
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Write-Host " -Help Show this help message"
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Write-Host ""
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Write-Host "Examples:"
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Write-Host " ./create-new-feature.ps1 'Add user authentication system' -ShortName 'user-auth'"
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Write-Host " ./create-new-feature.ps1 'Implement OAuth2 integration for API'"
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Write-Host " ./create-new-feature.ps1 -Timestamp -ShortName 'user-auth' 'Add user authentication'"
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exit 0
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}
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# Check if feature description provided
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if (-not $FeatureDescription -or $FeatureDescription.Count -eq 0) {
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Write-Error "Usage: ./create-new-feature.ps1 [-Json] [-ShortName <name>] [-Number N] [-Timestamp] <feature description>"
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exit 1
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}
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$featureDesc = ($FeatureDescription -join ' ').Trim()
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# Validate description is not empty after trimming (e.g., user passed only whitespace)
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if ([string]::IsNullOrWhiteSpace($featureDesc)) {
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Write-Error "Error: Feature description cannot be empty or contain only whitespace"
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exit 1
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}
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# Resolve repository root. Prefer git information when available, but fall back
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# to searching for repository markers so the workflow still functions in repositories that
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# were initialized with --no-git.
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function Find-RepositoryRoot {
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param(
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[string]$StartDir,
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[string[]]$Markers = @('.git', '.specify')
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)
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$current = Resolve-Path $StartDir
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while ($true) {
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foreach ($marker in $Markers) {
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if (Test-Path (Join-Path $current $marker)) {
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return $current
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}
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}
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$parent = Split-Path $current -Parent
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if ($parent -eq $current) {
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# Reached filesystem root without finding markers
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return $null
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}
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$current = $parent
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}
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}
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function Get-HighestNumberFromSpecs {
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param([string]$SpecsDir)
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$highest = 0
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if (Test-Path $SpecsDir) {
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Get-ChildItem -Path $SpecsDir -Directory | ForEach-Object {
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if ($_.Name -match '^(\d{3})-') {
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$num = [int]$matches[1]
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if ($num -gt $highest) { $highest = $num }
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}
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}
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}
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return $highest
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}
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function Get-HighestNumberFromBranches {
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param()
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$highest = 0
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try {
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$branches = git branch -a 2>$null
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if ($LASTEXITCODE -eq 0) {
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foreach ($branch in $branches) {
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# Clean branch name: remove leading markers and remote prefixes
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$cleanBranch = $branch.Trim() -replace '^\*?\s+', '' -replace '^remotes/[^/]+/', ''
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# Extract feature number if branch matches pattern ###-*
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if ($cleanBranch -match '^(\d{3})-') {
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$num = [int]$matches[1]
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if ($num -gt $highest) { $highest = $num }
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}
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}
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}
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} catch {
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# If git command fails, return 0
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Write-Verbose "Could not check Git branches: $_"
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}
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return $highest
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}
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function Get-NextBranchNumber {
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param(
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[string]$SpecsDir
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)
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# Fetch all remotes to get latest branch info (suppress errors if no remotes)
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try {
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git fetch --all --prune 2>$null | Out-Null
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} catch {
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# Ignore fetch errors
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}
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# Get highest number from ALL branches (not just matching short name)
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$highestBranch = Get-HighestNumberFromBranches
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# Get highest number from ALL specs (not just matching short name)
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$highestSpec = Get-HighestNumberFromSpecs -SpecsDir $SpecsDir
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# Take the maximum of both
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$maxNum = [Math]::Max($highestBranch, $highestSpec)
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# Return next number
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return $maxNum + 1
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}
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function ConvertTo-CleanBranchName {
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param([string]$Name)
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return $Name.ToLower() -replace '[^a-z0-9]', '-' -replace '-{2,}', '-' -replace '^-', '' -replace '-$', ''
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}
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$fallbackRoot = (Find-RepositoryRoot -StartDir $PSScriptRoot)
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if (-not $fallbackRoot) {
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Write-Error "Error: Could not determine repository root. Please run this script from within the repository."
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exit 1
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}
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# Load common functions (includes Resolve-Template)
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. "$PSScriptRoot/common.ps1"
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try {
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$repoRoot = git rev-parse --show-toplevel 2>$null
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if ($LASTEXITCODE -eq 0) {
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$hasGit = $true
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} else {
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throw "Git not available"
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}
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} catch {
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$repoRoot = $fallbackRoot
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$hasGit = $false
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}
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Set-Location $repoRoot
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$specsDir = Join-Path $repoRoot 'specs'
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New-Item -ItemType Directory -Path $specsDir -Force | Out-Null
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# Function to generate branch name with stop word filtering and length filtering
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function Get-BranchName {
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param([string]$Description)
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# Common stop words to filter out
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$stopWords = @(
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'i', 'a', 'an', 'the', 'to', 'for', 'of', 'in', 'on', 'at', 'by', 'with', 'from',
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'is', 'are', 'was', 'were', 'be', 'been', 'being', 'have', 'has', 'had',
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'do', 'does', 'did', 'will', 'would', 'should', 'could', 'can', 'may', 'might', 'must', 'shall',
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'this', 'that', 'these', 'those', 'my', 'your', 'our', 'their',
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'want', 'need', 'add', 'get', 'set'
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)
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# Convert to lowercase and extract words (alphanumeric only)
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$cleanName = $Description.ToLower() -replace '[^a-z0-9\s]', ' '
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$words = $cleanName -split '\s+' | Where-Object { $_ }
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# Filter words: remove stop words and words shorter than 3 chars (unless they're uppercase acronyms in original)
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$meaningfulWords = @()
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foreach ($word in $words) {
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# Skip stop words
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if ($stopWords -contains $word) { continue }
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# Keep words that are length >= 3 OR appear as uppercase in original (likely acronyms)
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if ($word.Length -ge 3) {
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$meaningfulWords += $word
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} elseif ($Description -match "\b$($word.ToUpper())\b") {
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# Keep short words if they appear as uppercase in original (likely acronyms)
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$meaningfulWords += $word
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}
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}
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# If we have meaningful words, use first 3-4 of them
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if ($meaningfulWords.Count -gt 0) {
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$maxWords = if ($meaningfulWords.Count -eq 4) { 4 } else { 3 }
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$result = ($meaningfulWords | Select-Object -First $maxWords) -join '-'
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return $result
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} else {
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# Fallback to original logic if no meaningful words found
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$result = ConvertTo-CleanBranchName -Name $Description
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$fallbackWords = ($result -split '-') | Where-Object { $_ } | Select-Object -First 3
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return [string]::Join('-', $fallbackWords)
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}
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}
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# Generate branch name
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if ($ShortName) {
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# Use provided short name, just clean it up
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$branchSuffix = ConvertTo-CleanBranchName -Name $ShortName
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} else {
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# Generate from description with smart filtering
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$branchSuffix = Get-BranchName -Description $featureDesc
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}
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# Warn if -Number and -Timestamp are both specified
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if ($Timestamp -and $Number -ne 0) {
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Write-Warning "[specify] Warning: -Number is ignored when -Timestamp is used"
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$Number = 0
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}
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# Determine branch prefix
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if ($Timestamp) {
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$featureNum = Get-Date -Format 'yyyyMMdd-HHmmss'
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$branchName = "$featureNum-$branchSuffix"
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} else {
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# Determine branch number
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if ($Number -eq 0) {
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if ($hasGit) {
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# Check existing branches on remotes
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$Number = Get-NextBranchNumber -SpecsDir $specsDir
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} else {
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# Fall back to local directory check
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$Number = (Get-HighestNumberFromSpecs -SpecsDir $specsDir) + 1
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}
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}
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$featureNum = ('{0:000}' -f $Number)
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$branchName = "$featureNum-$branchSuffix"
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}
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# GitHub enforces a 244-byte limit on branch names
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# Validate and truncate if necessary
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$maxBranchLength = 244
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if ($branchName.Length -gt $maxBranchLength) {
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# Calculate how much we need to trim from suffix
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# Account for prefix length: timestamp (15) + hyphen (1) = 16, or sequential (3) + hyphen (1) = 4
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$prefixLength = $featureNum.Length + 1
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$maxSuffixLength = $maxBranchLength - $prefixLength
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# Truncate suffix
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$truncatedSuffix = $branchSuffix.Substring(0, [Math]::Min($branchSuffix.Length, $maxSuffixLength))
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# Remove trailing hyphen if truncation created one
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$truncatedSuffix = $truncatedSuffix -replace '-$', ''
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$originalBranchName = $branchName
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$branchName = "$featureNum-$truncatedSuffix"
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Write-Warning "[specify] Branch name exceeded GitHub's 244-byte limit"
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Write-Warning "[specify] Original: $originalBranchName ($($originalBranchName.Length) bytes)"
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Write-Warning "[specify] Truncated to: $branchName ($($branchName.Length) bytes)"
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}
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if ($hasGit) {
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$branchCreated = $false
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try {
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git checkout -q -b $branchName 2>$null | Out-Null
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if ($LASTEXITCODE -eq 0) {
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$branchCreated = $true
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}
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} catch {
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# Exception during git command
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}
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if (-not $branchCreated) {
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# Check if branch already exists
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$existingBranch = git branch --list $branchName 2>$null
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if ($existingBranch) {
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if ($Timestamp) {
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Write-Error "Error: Branch '$branchName' already exists. Rerun to get a new timestamp or use a different -ShortName."
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} else {
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Write-Error "Error: Branch '$branchName' already exists. Please use a different feature name or specify a different number with -Number."
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}
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exit 1
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} else {
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Write-Error "Error: Failed to create git branch '$branchName'. Please check your git configuration and try again."
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exit 1
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}
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}
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} else {
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Write-Warning "[specify] Warning: Git repository not detected; skipped branch creation for $branchName"
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}
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$featureDir = Join-Path $specsDir $branchName
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New-Item -ItemType Directory -Path $featureDir -Force | Out-Null
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$template = Resolve-Template -TemplateName 'spec-template' -RepoRoot $repoRoot
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$specFile = Join-Path $featureDir 'spec.md'
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if ($template -and (Test-Path $template)) {
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Copy-Item $template $specFile -Force
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} else {
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New-Item -ItemType File -Path $specFile | Out-Null
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}
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# Set the SPECIFY_FEATURE environment variable for the current session
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$env:SPECIFY_FEATURE = $branchName
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if ($Json) {
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$obj = [PSCustomObject]@{
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BRANCH_NAME = $branchName
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SPEC_FILE = $specFile
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FEATURE_NUM = $featureNum
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HAS_GIT = $hasGit
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}
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$obj | ConvertTo-Json -Compress
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} else {
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Write-Output "BRANCH_NAME: $branchName"
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Write-Output "SPEC_FILE: $specFile"
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Write-Output "FEATURE_NUM: $featureNum"
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Write-Output "HAS_GIT: $hasGit"
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Write-Output "SPECIFY_FEATURE environment variable set to: $branchName"
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}
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