Handle compdef file locations: don't source add to $fpath

[blueyed]

This allows to use completions from somewhere, e.g.

antigen bundle blueyed/hub --loc=etc/_hub --branch=improve-zsh-completion

Without this patch, an error is thrown:

% antigen bundle blueyed/hub --loc=etc/hub.zsh_completion --branch=improve-zsh-completion
_arguments:comparguments:312: can only be called from completion function

This then still needs a call to compinit, but that's meant to happen through antigen apply?!

[desyncr]

Thank you for using and trying to improve Antigen.

As I understand zsh follows a convention for loading autocompletions, which is prefixing your autocompletion definitions with an underscore. This is also advised in the installation instructions for hub.

Given the use case is too specific we'd rather not add more complexity to Antigen.

[blueyed]

@desyncr
Hmm, the file itself starts with an underscore?!
(https://github.com/blueyed/hub/blob/improve-zsh-completion/etc/_hub)

Do you mean the code should not look for #compdef, but for if the filename starts with an underscore?!

In my opinion it's more reliable to check for #compdef.