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spf13--cobra/zsh_completions.md

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Generating Zsh Completion for your cobra.Command

Cobra supports native Zsh completion generated from the root cobra.Command. The generated completion script should be put somewhere in your $fpath named _<YOUR COMMAND>.

What's Supported

  • Completion for all non-hidden subcommands using their .Short description.
  • Completion for all non-hidden flags using the following rules:
    • Filename completion works by marking the flag with cmd.MarkFlagFilename... family of commands. However, it will ignore specific extensions requested by this command (see about what's not supported yet below).
    • The requirement for argument to the flag is decided by the .NoOptDefVal flag value - if it's empty then completion will expect an argument.
    • Flags of one of the various *Arrary and *Slice types supports multiple specifications (with or without argument depending on the specific type).

What's not yet Supported

  • Positional argument completion are not supported yet.
  • Filename completion ignores extension specification.
  • Custom completion scripts are not supported yet (We should probably create zsh specific one, doesn't make sense to re-use the bash one as the functions will be different).
  • Whatever other feature you're looking for and doesn't exist :)