Re: Adding a prefix to certain filename completions

[Nikolai Weibull <mailing-lists.zsh-users@rawuncut.elitemail.org>]

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Bart Schaefer wrote:

> > Done.  I modified the function a bit to handle files named +<n> a bit
> > better:

> I'm not sure this is better.  Previously you should have seen the
> explanation of 'line number' on the first tab, and then been able to
> complete the file name on the second tab.  With your change, you'll
> never see the 'line number' message, it'll always complete the file.

No, that's true.  However, when I tried it, I never get to the second
group on sucessive tabs (even after an 'emulate zsh').

> But if that's the behavior you wanted, this would be a better way:
> 
>     _vim_files () {
>       case $PREFIX in
>         (+*) _files -P './' $* && return 0 ;;
>         (*) _files $* ;;
>       esac
>       case $PREFIX in
>         (+) _message -e 'start at given line (default: end of file)' ;;
>         (+<->) _message -e 'line number' ;;
>       esac
>     }

OK, I changed it to that.

> Oh, one other thing ... having _vim_files embedded in the file named _vim
> in that way, causes _vim_files to be redefined as a function every time
> the _vim function is *called*.  I should have noticed that before.  See
> something like _cvs for an example of defining multiple functions in the
> same file.

Ah, I was looking for examples of completion functions using auxiliary
functions and actually saw that, but never got around to adding the
redefinition-protection.  Thanks.

I've included a patch against CVS,
        nikolai

-- 
Nikolai Weibull: now available free of charge at http://bitwi.se/!
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--- _vim	2005-07-07 14:56:46.000000000 +0200
+++ /home/pcp/.local/etc/zsh/functions/_vim	2005-07-08 12:09:19.936813032 +0200
@@ -1,16 +1,15 @@
 #compdef vim exim gvim gex gview rvim rview rgvim rgview evim eview vimdiff gvimdiff
 
+(( $+functions[_vim_files] )) ||
 _vim_files () {
-  if [[ $(echo $PREFIX*(N)) == '' ]]; then
-    case $PREFIX in
-      (+) _message -e 'start at a given line (default: end of file)' ;;
-      (+<1->) _message -e 'line number' ;;
-    esac
-  fi
   case $PREFIX in
-    (+*) _files -P './' $* ;;
+    (+*) _files -P './' $* && return 0 ;;
     (*) _files $* ;;
   esac
+  case $PREFIX in
+    (+) _message -e 'start at a given line (default: end of file)' ;;
+    (+<1->) _message -e 'line number' ;;
+  esac
 }
 
 local arguments