Completion: How to emulate what this zstyle does natuarlly in a completion function?

Completion: How to emulate what this zstyle does natuarlly in a completion function?

[Doron Behar]

Since I first installed zsh, probably when I ran `zsh-newuser-install`,
I had the following line in my `~/.zshrc`:

    zstyle ':completion:*:kill:*' command 'ps -u $USER -o pid,%cpu,tty,cputime,cmd'

I know that if I remove this line, the `kill` command's completion is
pretty poor and it completes processes from the current tty only. With
this statement in my `~/.zshrc`, `kill` is completed with all processes
of the current user.

My question is: How do I emulate a completion like that naturally within
a completion function? I want a certain command's option argument
completion to suggest all processes the current user just like when I
try to complete `kill`.

Re: Completion: How to emulate what this zstyle does natuarlly in a completion function?

[Bart Schaefer]

On Sat, May 26, 2018 at 12:05 AM, Doron Behar <doron.behar@gmail.com> wrote:
>
> My question is: How do I emulate a completion like that naturally within
> a completion function? I want a certain command's option argument
> completion to suggest all processes the current user just like when I
> try to complete `kill`.

You want to call the _pids helper function from that command's
completion function.  _pids will use the current context to look up
the command to use to generate the list of possible process IDs.

Re: Completion: How to emulate what this zstyle does natuarlly in a completion function?

[Doron Behar]

Thanks for your reply Bart,

I tried using `_pids` but it completes pids of processes only in the
current tty. How to I make complete all the processes the user has?

On Sat, May 26, 2018 at 08:45:10PM -0700, Bart Schaefer wrote:
> On Sat, May 26, 2018 at 12:05 AM, Doron Behar <doron.behar@gmail.com> wrote:
> >
> > My question is: How do I emulate a completion like that naturally within
> > a completion function? I want a certain command's option argument
> > completion to suggest all processes the current user just like when I
> > try to complete `kill`.
> 
> You want to call the _pids helper function from that command's
> completion function.  _pids will use the current context to look up
> the command to use to generate the list of possible process IDs.