Fix spacing in bash implementation

completions_bash.go

@@ -14,40 +14,43 @@ func WriteBashCompletions(out io.Writer, rootCmd *Command) error {
 	})
 }
 
+// TODO: Add --option|--other-option...) to return nothing for options that require a value
 var bashTpl = template.Must(template.New("bash").Funcs(tplFuncs).Parse(`
 {{- $rootCmd := .RootCmd -}}
 {{- $progName := $rootCmd.Name -}}
 {{- $varName := under $rootCmd.Name -}}
 
 {{- define "cmd" }}
-  {{ $currIdx := .Index }}
-  {{ $nextIdx := inc .Index }}
-  "{{ .Cmd.Name }}")
-	case ${COMP_WORDS[{{ $currIdx }}]} in
-		{{ range .Cmd.Subcommands -}}
-		{{ template "cmd" (map "Cmd" . "Index" $nextIdx) -}}
-		{{ end }}
-		*)
-			COMPREPLY=($(compgen -W "{{ join .Cmd.Subcommands.Names " " }} {{ join .Cmd.Opts.Names " "  }}" -- $curr))
-	esac
-  ;;
-{{ end -}}
+{{ $currIdx := .Index -}}
+{{- $nextIdx := inc .Index -}}
+{{- $indentSize := mult $currIdx 2 -}}
+{{ indent $indentSize }}"{{ .Cmd.Name }}")
+{{ indent $indentSize }}  case ${COMP_WORDS[{{ $currIdx }}]} in
+{{ indent $indentSize }}	{{ range .Cmd.Subcommands -}}
+{{ indent $indentSize }}	{{ template "cmd" (map "Cmd" . "Index" $nextIdx) -}}
+{{ indent $indentSize }}	{{ end }}
+{{ indent $indentSize }}    *)
+{{ indent $indentSize }}      COMPREPLY=($(compgen -W "{{ join .Cmd.Subcommands.Names " " }} {{ join .Cmd.Opts.Names " "  }}" -- $curr))
+{{ indent $indentSize }}    ;;
+{{ indent $indentSize }}  esac
+{{ indent $indentSize }};; # {{ .Cmd.Name }}
+{{- end -}}
 
 _{{$varName}}_completions()
 {
-	local curr prev
   COMPREPLY=()
-	curr=${COMP_WORDS[COMP_CWORD]}
-	prev=${COMP_WORDS[COMP_CWORD-1]}
 
   case ${COMP_WORDS[1]} in
-		{{ range .RootCmd.Subcommands -}}
+    {{- range .RootCmd.Subcommands -}}
     {{ template "cmd" (map "Cmd" . "Index" 2) -}}
     {{ end }}
-
     *)
       COMPREPLY=($(compgen -W "{{ join .RootCmd.Subcommands.Names " " }} {{ join .RootCmd.Opts.Names " "  }}" -- $curr))
+    ;;
   esac
+
+  # Global Options
+  +=($(compgen -W "{{ join .GlobalOpts.Names " " }}" -- $curr))
 }
 
 complete -F _{{$varName}}_completions {{$progName}}

tpl_funcs.go

@@ -12,7 +12,13 @@ var tplFuncs = template.FuncMap{
 	"join":      tplJoin,
 	"under":     tplUnder,
 	"varPrefix": tplVarPrefix,
+	"repeat":    tplRepeat,
+	"indent":    tplIndent,
+	"add":       tplAdd,
 	"inc":       tplInc,
+	"sub":       tplSub,
+	"dec":       tplDec,
+	"mult":      tplMult,
 }
 
 func tplMap(vals ...any) (map[string]any, error) {
@@ -47,6 +53,30 @@ func tplVarPrefix(s string) string {
 	return tplUnder(s) + "_"
 }
 
-func tplInc(i int) int {
-	return i + 1
+func tplRepeat(s string, n int) string {
+	return strings.Repeat(s, n)
+}
+
+func tplIndent(n int) string {
+	return tplRepeat(" ", n)
+}
+
+func tplAdd(a, b int) int {
+	return a + b
+}
+
+func tplInc(i int) int {
+	return tplAdd(i, 1)
+}
+
+func tplSub(a, b int) int {
+	return a - b
+}
+
+func tplDec(i int) int {
+	return tplSub(i, 1)
+}
+
+func tplMult(a, b int) int {
+	return a * b
 }