fix(cmd): fix cobra completion

changelog.md

@@ -6,11 +6,14 @@
 
 - [#3835](https://github.com/ignite/cli/pull/3835) Add `--minimal` flag to `scaffold chain` to scaffold a chain with the least amount of sdk modules
 
-
 ### Changes
 
 - [#3899](https://github.com/ignite/cli/pull/3899) Introduce plugin.Execute function
 
+### Bug Fixes
+
+- [#3905](https://github.com/ignite/cli/pull/3905) Fix `ignite completion`
+
 ## [`v28.1.1`](https://github.com/ignite/cli/releases/tag/v28.1.1)
 
 ### Fixes

ignite/cmd/cmd.go

@@ -61,7 +61,7 @@
 		PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
 			// Check for new versions only when shell completion scripts are not being
 			// generated to avoid invalid output to stdout when a new version is available
-			if cmd.Use != "completions" {
+			if cmd.Use != "completion" {
 				checkNewVersion(cmd.Context())
 			}
 
@@ -81,6 +81,7 @@
 		NewVersion(),
 		NewApp(),
 		NewDoctor(),
+		NewCompletionCmd(),
 	)
 	c.AddCommand(deprecated()...)
 

ignite/cmd/completion.go

@@ -0,0 +1,33 @@
+package ignitecmd
+
+import (
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+// completionCmd represents the completion command
+func NewCompletionCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "completion [bash|zsh|fish|powershell]",
+		Short: "Generates shell completion script.",
+		Run: func(cmd *cobra.Command, args []string) {
+			if len(args) == 0 {
+				cmd.Help()
+				os.Exit(0)
+			}
+			switch args[0] {
+			case "bash":
+				cmd.Root().GenBashCompletion(os.Stdout)
+			case "zsh":
+				cmd.Root().GenZshCompletion(os.Stdout)
+			case "fish":
+				cmd.Root().GenFishCompletion(os.Stdout, true)
+			case "powershell":
+				cmd.Root().GenPowerShellCompletion(os.Stdout)
+			default:
+				cmd.Help()
+			}
+		},
+	}
+}