Re: Completion on simple commande

[Peter Stephenson <Peter.Stephenson@xxxxxxx>]

On Thu, 12 Aug 2010 11:11:11 +0200
Michel <michel.barret@xxxxxxxxx> wrote:
> I use an zsh function to launch the graphical application. But I don't
> know how have the completion on my function.
> 
> My function is :
> function start (){
>     $@ > /dev/null 2> /dev/null &
> }
> 
> And I want can type :
> start fire<tab>

"man zshcompsys" is the place to start, but working that way it'll take a
while before you get to the point where you can answer questions like this.

First you'll need to start the completion system; it's not clear if you've done
that.  If you haven't, put this in your ~/.zshrc:

autoload -Uz compinit
compinit

Then the simplest answer to the immediate question is to add the following
line:

compdef _precommand start

That makes "start" behave like other command words that take a complete
command line following.

By the way, you might want to put the $@ in double quotes:

function start (){
    "$@" > /dev/null 2> /dev/null &
}

The difference is that this won't remove any zero-length arguments to the
command, e.g. a '' on the command line.  That's not a typical problem with
the sort of use you have, however.

-- 
Peter Stephenson <pws@xxxxxxx>            Software Engineer
Tel: +44 (0)1223 692070                   Cambridge Silicon Radio Limited
Churchill House, Cambridge Business Park, Cowley Road, Cambridge, CB4 0WZ, UK


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