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fix bash completion install command #189

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fix bash completion install command #189

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19 changes: 19 additions & 0 deletions cmd/root.go
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,7 @@ func Execute(currentVersion string) error {
info := version.FetchUpdateInfo(rootCmd.Version)
defer info.PromptUpdateIfAvailable()
ctx := version.WithContext(context.Background(), &info)
patchBashCompletionHelp()
return rootCmd.ExecuteContext(ctx)
}

Expand Down Expand Up @@ -194,3 +195,21 @@ func requireAuth(cmd *cobra.Command, args []string) {
err = viper.WriteConfig()
promptLoginAndExitIf(err != nil)
}

// patchBashCompletionHelp adjusts Cobra's generated bash completion help.
//
// Cobra's default Linux example redirects into /etc/bash_completion.d, which
// fails for non-root shells. Use sudo tee so only the file write is elevated.
func patchBashCompletionHelp() {
rootCmd.InitDefaultCompletionCmd()

bashCmd, _, err := rootCmd.Find([]string{"completion", "bash"})
if err != nil || bashCmd == nil {
return
}

old := "bootdev completion bash > /etc/bash_completion.d/bootdev"
new := "bootdev completion bash | sudo tee /etc/bash_completion.d/bootdev > /dev/null"

bashCmd.Long = strings.Replace(bashCmd.Long, old, new, 1)
}