Add powershell completions

completions/_taskwarrior-tui.ps1

@@ -0,0 +1,37 @@
+
+using namespace System.Management.Automation
+using namespace System.Management.Automation.Language
+
+Register-ArgumentCompleter -Native -CommandName 'taskwarrior-tui' -ScriptBlock {
+    param($wordToComplete, $commandAst, $cursorPosition)
+
+    $commandElements = $commandAst.CommandElements
+    $command = @(
+        'taskwarrior-tui'
+        for ($i = 1; $i -lt $commandElements.Count; $i++) {
+            $element = $commandElements[$i]
+            if ($element -isnot [StringConstantExpressionAst] -or
+                $element.StringConstantType -ne [StringConstantType]::BareWord -or
+                $element.Value.StartsWith('-')) {
+                break
+        }
+        $element.Value
+    }) -join ';'
+
+    $completions = @(switch ($command) {
+        'taskwarrior-tui' {
+            [CompletionResult]::new('-c', 'c', [CompletionResultType]::ParameterName, 'Sets a custom config file')
+            [CompletionResult]::new('--config', 'config', [CompletionResultType]::ParameterName, 'Sets a custom config file')
+            [CompletionResult]::new('-r', 'r', [CompletionResultType]::ParameterName, 'Sets default report')
+            [CompletionResult]::new('--report', 'report', [CompletionResultType]::ParameterName, 'Sets default report')
+            [CompletionResult]::new('-h', 'h', [CompletionResultType]::ParameterName, 'Prints help information')
+            [CompletionResult]::new('--help', 'help', [CompletionResultType]::ParameterName, 'Prints help information')
+            [CompletionResult]::new('-V', 'V', [CompletionResultType]::ParameterName, 'Prints version information')
+            [CompletionResult]::new('--version', 'version', [CompletionResultType]::ParameterName, 'Prints version information')
+            break
+        }
+    })
+
+    $completions.Where{ $_.CompletionText -like "$wordToComplete*" } |
+        Sort-Object -Property ListItemText
+}