feat: add descriptions for bash and powershell autocompletion

autocomplete/bash_autocomplete

@@ -26,7 +26,40 @@ __%[1]s_bash_autocomplete() {
       requestComp="${words[*]} --generate-shell-completion"
     fi
     opts=$(eval "${requestComp}" 2>/dev/null)
-    COMPREPLY=($(compgen -W "${opts}" -- ${cur}))
+
+    # Separate completions and descriptions
+    local completions=()
+    local descriptions=()
+    local longest=0
+    while IFS=$'\n' read -r line; do
+      local comp_part desc_part
+      if [[ "$line" == *:* ]]; then
+        comp_part="${line%%:*}"
+        desc_part="${line#*:}"
+      else
+        comp_part="$line"
+        desc_part=""
+      fi
+      completions+=("$comp_part")
+      descriptions+=("$desc_part")
+      (( ${#comp_part} > longest )) && longest=${#comp_part}
+    done <<< "$opts"
+
+    # Format completions with aligned descriptions
+    for i in "${!completions[@]}"; do
+      local padded_completion="${completions[i]}"
+      local pad_len=$((longest - ${#padded_completion}))
+      if (( pad_len > 0 )); then
+        padded_completion="${padded_completion}$(head -c $pad_len < /dev/zero | tr '\0' ' ')"
+      fi
+
+      if [[ -n "${descriptions[i]}" ]]; then
+        COMPREPLY+=("${padded_completion}  -- ${descriptions[i]}")
+      else
+        COMPREPLY+=("${padded_completion}")
+      fi
+    done
+
     return 0
   fi
 }

autocomplete/powershell_autocomplete.ps1

@@ -1,9 +1,16 @@
 $fn = $($MyInvocation.MyCommand.Name)
 $name = $fn -replace "(.*)\.ps1$", '$1'
 Register-ArgumentCompleter -Native -CommandName $name -ScriptBlock {
-     param($commandName, $wordToComplete, $cursorPosition)
-     $other = "$wordToComplete --generate-shell-completion"
-         Invoke-Expression $other | ForEach-Object {
+    param($commandName, $wordToComplete, $cursorPosition)
+    $other = "$wordToComplete --generate-shell-completion"
+    Invoke-Expression $other | ForEach-Object {
+        $parts = $_.Split(':', 2)
+        if ($parts.Count -eq 2) {
+            $completion = $parts[0].Trim()
+            $description = $parts[1].Trim()
+            [System.Management.Automation.CompletionResult]::new($completion, $completion, 'ParameterValue', $description)
+        } else {
             [System.Management.Automation.CompletionResult]::new($_, $_, 'ParameterValue', $_)
-         }
- }
+        }
+    }
+}

examples_test.go

@@ -258,14 +258,13 @@ func ExampleCommand_Run_shellComplete_bash_withShortFlag() {
 	}
 
 	// Simulate a bash environment and command line arguments
-	os.Setenv("SHELL", "bash")
 	os.Args = []string{"greet", "-", "--generate-shell-completion"}
 
 	_ = cmd.Run(context.Background(), os.Args)
 	// Output:
 	// --other
 	// --xyz
-	// --help
+	// --help:show help
 }
 
 func ExampleCommand_Run_shellComplete_bash_withLongFlag() {
@@ -291,7 +290,6 @@ func ExampleCommand_Run_shellComplete_bash_withLongFlag() {
 	}
 
 	// Simulate a bash environment and command line arguments
-	os.Setenv("SHELL", "bash")
 	os.Args = []string{"greet", "--s", "--generate-shell-completion"}
 
 	_ = cmd.Run(context.Background(), os.Args)
@@ -326,7 +324,6 @@ func ExampleCommand_Run_shellComplete_bash_withMultipleLongFlag() {
 	}
 
 	// Simulate a bash environment and command line arguments
-	os.Setenv("SHELL", "bash")
 	os.Args = []string{"greet", "--st", "--generate-shell-completion"}
 
 	_ = cmd.Run(context.Background(), os.Args)
@@ -362,14 +359,13 @@ func ExampleCommand_Run_shellComplete_bash() {
 	}
 
 	// Simulate a bash environment and command line arguments
-	os.Setenv("SHELL", "bash")
 	os.Args = []string{"greet", "--generate-shell-completion"}
 
 	_ = cmd.Run(context.Background(), os.Args)
 	// Output:
-	// describeit
-	// next
-	// help
+	// describeit:use it to see a description
+	// next:next example
+	// help:Shows a list of commands or help for one command
 }
 
 func ExampleCommand_Run_shellComplete_zsh() {
@@ -400,7 +396,6 @@ func ExampleCommand_Run_shellComplete_zsh() {
 
 	// Simulate a zsh environment and command line arguments
 	os.Args = []string{"greet", "--generate-shell-completion"}
-	os.Setenv("SHELL", "/usr/bin/zsh")
 
 	_ = cmd.Run(context.Background(), os.Args)
 	// Output:
@@ -437,7 +432,6 @@ func ExampleCommand_Run_shellComplete_fish() {
 
 	// Simulate a fish environment and command line arguments
 	os.Args = []string{"greet", "--generate-shell-completion"}
-	os.Setenv("SHELL", "/usr/bin/fish")
 
 	_ = cmd.Run(context.Background(), os.Args)
 	// Output:

help.go

@@ -184,12 +184,11 @@ func DefaultRootCommandComplete(ctx context.Context, cmd *Command) {
 var DefaultAppComplete = DefaultRootCommandComplete
 
 func printCommandSuggestions(commands []*Command, writer io.Writer) {
-	shell := os.Getenv("SHELL")
 	for _, command := range commands {
 		if command.Hidden {
 			continue
 		}
-		if (strings.HasSuffix(shell, "zsh") || strings.HasSuffix(shell, "fish")) && len(command.Usage) > 0 {
+		if len(command.Usage) > 0 {
 			_, _ = fmt.Fprintf(writer, "%s:%s\n", command.Name, command.Usage)
 		} else {
 			_, _ = fmt.Fprintf(writer, "%s\n", command.Name)
@@ -239,8 +238,7 @@ func printFlagSuggestions(lastArg string, flags []Flag, writer io.Writer) {
 		// match if last argument matches this flag and it is not repeated
 		if strings.HasPrefix(name, cur) && cur != name /* && !cliArgContains(name, os.Args)*/ {
 			flagCompletion := fmt.Sprintf("%s%s", strings.Repeat("-", count), name)
-			shell := os.Getenv("SHELL")
-			if usage != "" && (strings.HasSuffix(shell, "zsh") || strings.HasSuffix(shell, "fish")) {
+			if usage != "" {
 				flagCompletion = fmt.Sprintf("%s:%s", flagCompletion, usage)
 			}
 			fmt.Fprintln(writer, flagCompletion)