Sstrhsrtj

I'm trying to add auto-completion for some custom ant parameters. However, it seems to be overwriting the existing oh my zsh ant plugin auto-completions which I'd like to keep. Is there a simple way to have both the oh my zsh plugin and my custom ant auto-completion live in harmony?

Here's the existing plugin at ~/.oh-my-zsh/plugins/ant/ant.plugin.zsh

_ant_does_target_list_need_generating () {

  [ ! -f .ant_targets ] && return 0;

  [ build.xml -nt .ant_targets ] && return 0;

  return 1;

}



_ant () {

  if [ -f build.xml ]; then

    if _ant_does_target_list_need_generating; then

        ant -p | awk -F " " 'NR > 5 { print lastTarget }{lastTarget = $1}' > .ant_targets

    fi

    compadd -- `cat .ant_targets`

  fi

}



compdef _ant ant

And my auto complete at ~/my_completions/_ant

#compdef ant



_arguments '-Dprop=-[properties file]:filename:->files' '-Dsrc=-[build directory]:directory:_files -/'

case "$state" in

    files)

        local -a property_files

        property_files=( *.properties )

        _multi_parts / property_files

        ;;

esac

And here is my $fpath, the path for my completion is earlier in the list which I guess is why my script gets precedence.

/Users/myusername/my_completions /Users/myusername/.oh-my-zsh/plugins/git /Users/myusername/.oh-my-zsh/functions /Users/myusername/.oh-my-zsh/completions /usr/local/share/zsh/site-functions /usr/share/zsh/site-functions /usr/share/zsh/5.0.8/functions

I think the best way to do it is to extend completion function. Here is how you can do it:
https://unix.stackexchange.com/a/450133

First you would need to find the name of your existing function, to do it, you can bind _complete_help to CTRL-h (or any other shortcut), then type your command and look for completion function. Here is an example running it for git:

% bindkey '^h' _complete_help  

% git [press ctrl-h]

tags in context :completion::complete:git::

    argument-1 options  (_arguments _git)

tags in context :completion::complete:git:argument-1:

    aliases main-porcelain-commands user-commands third-party-commands ancillary-manipulator-commands ancillary-interrogator-commands interaction-commands plumbing-manipulator-commands plumbing-interrogator-commands plumbing-sync-commands plumbing-sync-helper-commands plumbing-internal-helper-commands  (_git_commands _git)

In this case the completion function is _git.
Next you can redefine it in your .zshrc like this:

# Call the function to make sure that it is loaded.

_git 2>/dev/null

# Save the original function.

functions[_git-orig]=$functions[_git]

# Redefine your completion function referencing the original.

_git() {

    _git-orig "$@"

    ...

}

You wouldn't need to call compdef again, since it is already bound to that function, and you just changed the function definition.