Tab completion for sparse-checkout

src/GitParamTabExpansion.ps1

@@ -32,6 +32,7 @@ $shortGitParams = @{
     revert = 'e m n S s X'
     rm = 'f n r q'
     shortlog = 'n s e w'
+    'sparse-checkout' = ''
     stash = 'p k u a q'
     status = 's b u z'
     submodule = 'q b f n N'
@@ -77,6 +78,7 @@ $longGitParams = @{
     rm = 'force dry-run cached ignore-unmatch quiet'
     shortlog = 'numbered summary email format='
     show = 'pretty= format= abbrev-commit no-abbrev-commit oneline encoding= expand-tabs no-expand-tabs notes no-notes show-notes no-standard-notes standard-notes show-signature name-only name-status stat shortstat numstat'
+    'sparse-checkout' = ''
     stash = 'patch no-keep-index keep-index include-untracked all quiet index'
     status = 'short branch porcelain long untracked-files ignore-submodules ignored column no-column'
     submodule = 'quiet branch force cached files summary-limit remote no-fetch checkout merge rebase init name reference recursive depth'
@@ -109,6 +111,12 @@ $longVstsParams = @{
     update = " $longVstsGlobal"
 }
 
+$longSparseCheckoutParams = @{
+    add = "stdin"
+    set = "cone no-cone sparse-index no-sparse-index stdin"
+    reapply = "cone no-cone sparse-index no-sparse-index"
+}
+
 # Variable is used in GitTabExpansion.ps1
 $gitParamValues = @{
     blame = @{

src/GitTabExpansion.ps1

@@ -21,6 +21,7 @@ $subcommands = @{
         get-url set-url show prune update
         "
     rerere = "clear forget diff remaining status gc"
+    'sparse-checkout' = "list set add reapply disable"
     stash = 'push save list show apply clear drop pop create branch'
     submodule = "add status init deinit update summary foreach sync"
     svn = "
@@ -58,7 +59,8 @@ $script:someCommands = @('add','am','annotate','archive','bisect','blame','branc
                          'cherry-pick','citool','clean','clone','commit','config','describe','diff','difftool','fetch',
                          'format-patch','gc','grep','gui','help','init','instaweb','log','merge','mergetool','mv',
                          'notes','prune','pull','push','rebase','reflog','remote','rerere','reset','restore','revert','rm',
-                         'shortlog','show','stash','status','submodule','svn','switch','tag','whatchanged', 'worktree')
+                         'shortlog','show','sparse-checkout','stash','status','submodule','svn','switch','tag','whatchanged',
+                         'worktree')
 
 if ((($PSVersionTable.PSVersion.Major -eq 5) -or $IsWindows) -and ($script:GitVersion -ge [System.Version]'2.16.2')) {
     $script:someCommands += 'update-git-for-windows'
@@ -69,6 +71,7 @@ $script:gitCommandsWithShortParams = $shortGitParams.Keys -join '|'
 $script:gitCommandsWithParamValues = $gitParamValues.Keys -join '|'
 $script:vstsCommandsWithShortParams = $shortVstsParams.Keys -join '|'
 $script:vstsCommandsWithLongParams = $longVstsParams.Keys -join '|'
+$script:sparseCheckoutCommandsWithLongParams = $longSparseCheckoutParams.Keys -join '|'
 
 # The regular expression here is roughly follows this pattern:
 #
@@ -462,6 +465,12 @@ function GitTabExpansionInternal($lastBlock, $GitStatus = $null) {
             gitBranches $matches['ref']
         }
 
+        # Handles git sparse-checkout <cmd>
+        "sparse-checkout\s+(?<cmd>$sparseCheckoutCommandsWithLongParams).*--(?<param>\S*)$"
+        {
+            expandLongParams $longSparseCheckoutParams $matches['cmd'] $matches['param']
+        }
+
         # Handles git <cmd> <ref>
         "^(?:cherry|cherry-pick|diff|difftool|log|merge|rebase|reflog\s+show|reset|revert|show).* (?<ref>\S*)$" {
             gitBranches $matches['ref'] $true

test/GitParamTabExpansion.Tests.ps1

@@ -150,5 +150,27 @@ Describe 'ParamsTabExpansion Tests' {
             $result -contains '--format=test2' | Should -Be $true
         }
     }
+
+    Context 'Sparse-Checkout Parameters TabExpansion Tests' {
+        It 'Tab completes all long sparse-checkout set parameters' {
+            $result = & $module GitTabExpansionInternal 'git sparse-checkout set --'
+            $result -contains '--cone' | Should -Be $true
+            $result -contains '--no-cone' | Should -Be $true
+            $result -contains '--sparse-index' | Should -Be $true
+            $result -contains '--no-sparse-index' | Should -Be $true
+            $result -contains '--stdin' | Should -Be $true
+        }
+        It 'Tab completes all long sparse-checkout reapply parameters' {
+            $result = & $module GitTabExpansionInternal 'git sparse-checkout reapply --'
+            $result -contains '--cone' | Should -Be $true
+            $result -contains '--no-cone' | Should -Be $true
+            $result -contains '--sparse-index' | Should -Be $true
+            $result -contains '--no-sparse-index' | Should -Be $true
+        }
+        It 'Tab completes all long sparse-checkout add parameters' {
+            $result = & $module GitTabExpansionInternal 'git sparse-checkout add --'
+            $result -contains '--stdin' | Should -Be $true
+        }
+    }
 }
 

test/TabExpansion.Tests.ps1

@@ -42,6 +42,16 @@ Describe 'TabExpansion Tests' {
             $result2 -contains 'set-head' | Should -Be $true
             $result2 -contains 'set-url' | Should -Be $true
         }
+        It 'Tab completes sparse-checkout subcommands' {
+            $result = & $module GitTabExpansionInternal 'git sparse-checkout '
+
+            $result -contains '' | Should -Be $false
+            $result -contains 'list' | Should -Be $true
+            $result -contains 'set' | Should -Be $true
+            $result -contains 'add' | Should -Be $true
+            $result -contains 'reapply' | Should -Be $true
+            $result -contains 'disable' | Should -Be $true
+        }
         It 'Tab completes update-git-for-windows only on Windows' {
             $result = & $module GitTabExpansionInternal 'git update-'