Cfrtjryk

I'm trying to create an autoloaded completion file for zsh. To do so, I've added a _myprog file in a folder that is in my fpath.

This file goes roughly like this:

#compdef myprog

_myprog () {

    local cmd

    if (( CURRENT > 2)); then

        cmd=${words[2]}

        curcontext="${curcontext%:*:*}:myprog-$cmd"

        (( CURRENT-- ))

        shift words

        case "${cmd}" in

          list|ls)

            _arguments : "--limit[Max depth]" "--folders[Print flat list of folders]"

            _describe -t commands "myprog list" subcommands

          ;;

          insert)

            _arguments : "--force[Overwrite file]" "--append[Append to existing data]"

            _describe -t commands "myprog insert" subcommands

            _myprog_complete_folders

          ;;

        esac

    else

        local -a subcommands

        subcommands=(

          "insert:Insert a new file"

          "list:List existing files"

        )

        _describe -t command 'myprog' subcommands

        _arguments : "--yes[Assume yes]" 

        _myprog_complete_files

    fi

}



_myprog_complete_files () {

    _values 'files' $(myprog ls)

}



_myprog_complete_folders () {

    _values 'folders' $(myprog ls --folders)

}



_myprog

So, my program has two scenarios where I want auto-completion:

1. When used without subcommand, I'd like to specify a path in a remote location. This is done by the function _myprog_complete_files thanks to the _value function. The file list is provided by running myprog ls, which prints each remote file on a new line.




2. When inserting a new remote file, I'd like to be able to autocomplete the folders name, which is done in the function _myprog_complete_folders using _value too, but this time the folder list is generated using myprog ls --folder instead, which only prints folders.

So far so good... Excepted that zsh is inserting a space after the folder name when I'm using <tab><tab> to have the value list displayed and I'm trying to type the file name after the folder name.

For example:

$ myprog insert web<tab><tab><tab>

 -- folders --

web/                          web/foo/                web/bar/

is supposed to select web/foo and it effectively does so and autocomplete to myprog insert web/foo/  but notice the trailing space! So if I'm trying to type directly the name of the file I want to insert once I've selected the folder I wanted using <tab>, say I want to call it baz, I'm ending up with myprog insert web/foo/ baz which is not my goal at all.

I've tried browsing through the zsh doc, without success.
I've for example tried to set zstyle ':completion::complete:myprog-insert:' add-space false to no avail, both in my .zshrc and in my _myprog file. I couldn't even see a difference when having it set or not.

I'm guessing I must be missing something, since it seems to be a desirable feature to be able to type directly after autocompletion in order to specify a parameter or so.

The add-space code in $fpath[-1]/_expand does not appear to be involved with your completion via _values; this can be checked by setting add-space to false everywhere, or by calling _complete_debug and seeing what code the completion went through:

% bindkey -M viins "^t" _complete_debug

% foo 

Trace output left in /tmp/zsh438foo2 (up-history to view)

One solution is to use the -s ... feature of _values, which can optionally insert a separator that is normally used to join multiple values, and then to disable that feature if the separator has been used:

#compdef foo

local curcontext="$curcontext" state line



choices=(aaa bbb ccc)



_arguments '1:dir:->folders' && return 0



case "$state" in

  folders)

    if ! compset -P '*/'; then

      _values -s / folders $choices

    fi

  ;;

esac

Which on a foo atab should append a slash, and then since / now appears the compset test should prevent additional completions.