which completion function are used for aliases?

which completion function are used for aliases?

[Andy Spiegl]

When completing the options of an alias, is there a way to make zsh use the
completion function of the corresponding command?

Say, if
 condor:~>print ${_comps[program1]}   
 _program1

 condor:~>alias program2
 program2=program1 --param1

then I would like zsh to use the completion function _program1 for the
completion of program2?  Of course I could manually define
 compdef _program1 program2

But is it possible to that automatically for (simple) aliases?

Chau,
 Andy.

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Re: which completion function are used for aliases?

[Bart Schaefer]

On Mar 25,  1:08am, Andy Spiegl wrote:
}
} When completing the options of an alias, is there a way to make zsh
} use the completion function of the corresponding command?

It should just happen.  What's your setting of the "complete_aliases"
setopt?  Try "unsetopt complete_aliases".  The name of the option is
somewhat ambiguous -- it means "complete aliases as separate commands
and not as the command for which they are another name."

Re: which completion function are used for aliases?

[Andy Spiegl]

Hi Bart,

> Try "unsetopt complete_aliases".
Aaah, interesting!  I guess I added this option a long time ago
and had forgotten about it, but the name of the option really is
a bit confusing. :-)

Now, is it also possible to make zsh "know" the options of the alias,
so that I don't have to hardcode the aliases in my completion function?

But how can I get the details of the defined aliases???

Right now, my completion function uses this code:
---------------
local dir=${words[(r)--dir=*]##--dir=}
if [[ -z $dir ]]; then
  integer dirind=${words[(i)--dir]}
  if (( dirind )); then
    dir=$words[dirind+1]
  fi
fi

# Default directories (depending on which alias is used)
if [[ -z $dir ]]; then
  if [[ $words[1] = gigaset2 ]]; then
    dir="/home/spiegl/movies/gigaset/PVR/"
  elif [[ $words[1] = gigaset3 ]]; then
    dir="/data2/movies/gigaset/PVR/"
  elif [[ $words[1] = gigaset-ext ]]; then
    dir="/extern-dos/Video/"
  else
    dir="/data/movies/gigaset/PVR/"
  fi
fi
--------------

Thx,
 Andy.

PS:
 gigaset2='gigaset --dir /home/spiegl/movies/gigaset/PVR'
 gigaset3='gigaset --dir /data2/movies/gigaset/PVR'
 gigaset-ext='gigaset --dir /extern-dos/Video'

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Re: which completion function are used for aliases?

[Peter Stephenson]

Andy Spiegl wrote:
> Now, is it also possible to make zsh "know" the options of the alias,
> so that I don't have to hardcode the aliases in my completion function?
> 
> But how can I get the details of the defined aliases???
> 
> # Default directories (depending on which alias is used)
> if [[ -z $dir ]]; then
>   if [[ $words[1] = gigaset2 ]]; then
>     dir="/home/spiegl/movies/gigaset/PVR/"
>   elif [[ $words[1] = gigaset3 ]]; then
>     dir="/data2/movies/gigaset/PVR/"
>   elif [[ $words[1] = gigaset-ext ]]; then
>     dir="/extern-dos/Video/"
>   else
>     dir="/data/movies/gigaset/PVR/"
>   fi
> fi
> 
> PS:
>  gigaset2='gigaset --dir /home/spiegl/movies/gigaset/PVR'
>  gigaset3='gigaset --dir /data2/movies/gigaset/PVR'
>  gigaset-ext='gigaset --dir /extern-dos/Video'

if [[ $aliases[$words[1]] = *" --dir "* ]]; then
   dir=${aliases[$words[1]]##*--dir }
fi

-- 
Peter Stephenson <p.w.stephenson@ntlworld.com>
Web page still at http://www.pwstephenson.fsnet.co.uk/

Re: which completion function are used for aliases?

[Andy Spiegl]

> if [[ $aliases[$words[1]] = *" --dir "* ]]; then
>    dir=${aliases[$words[1]]##*--dir }
> fi

This only works if there is no other option after "--dir /foo/bla".

I'm doing it like this now, but it sub-optimal I'm afraid  :-)

------------
if [[ -z $dir ]]; then
  # try to read directory from the alias
  # e.g. alias gigaset2='gigaset --dir /movies/gigaset/PVR --nowarnings'
  if [[ -n $aliases[$words[1]] ]]; then
    aliasstring=aliases[$words[1]]
    aliaswords=${(z)aliasstring}
    local dir=${aliaswords[(r)--dir=*]##--dir=}
    if [[ -z $dir ]]; then
      integer dirind=${aliaswords[(i)--dir]}
      if (( dirind )); then
        dir=$aliaswords[dirind+1]
      fi
    fi
  else
    # default directory
    dir="/data/movies/gigaset/PVR/"
  fi
fi
------------

Especially this should be easier, right?
  aliasstring=aliases[$words[1]]
  aliaswords=${(z)aliasstring}


Thanks,
 Andy.

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