Command completion slowness? (And PATH order possible?)

Command completion slowness? (And PATH order possible?)

[Daniel]

Sometimes it takes a few seconds to complete a command. But I am indeed calling
a rehashing function before the completion is actually done, maybe that could
be it? Will try to disable it for a while.

Moreover, can I have command completion in PATH order? Specifically I have
$USER/bin first in my PATH, and would really like first hit partial matches
from that directory, and later from others.

Re: Command completion slowness? (And PATH order possible?)

[Peter Stephenson]

On Thu, 13 Oct 2011 06:56:55 +0000
Daniel <quite@hack.org> wrote:
> Moreover, can I have command completion in PATH order? Specifically I have
> $USER/bin first in my PATH, and would really like first hit partial matches
> from that directory, and later from others.

Hmmm...

Here's a style path-tags that splits up commands into tags based on
the position in the path.  The tags are command-<index>-<name> to allow
you to match on tags in clever ways.  It definitely won't help your
speed problems.

You can then set an appropriate tag-order style, although if you use
group names,

zstyle ':completion:*:complete:*' path-tags true
zstyle ':completion:*' group-name ''
zstyle ':completion:*' format 'Completing %d'

in combination with menu selection you'll get the effect of ordering.

I'm not sure if there's a clever way with tag-order to get command-<->-*
to sort appropriately, but if there isn't there probably ought to be.
(I haven't zero-filled the number so if you had more than 10 entries in
$path you'd need the effect of numericglobsort to get the ordering.)

Doesn't work with the extra-verbose style, though I can't say I have
*that* much sympathy.

Index: Completion/Unix/Type/_path_commands
===================================================================
RCS file: /cvsroot/zsh/zsh/Completion/Unix/Type/_path_commands,v
retrieving revision 1.6
diff -p -u -r1.6 _path_commands
--- Completion/Unix/Type/_path_commands	2 Nov 2008 14:12:30 -0000	1.6
+++ Completion/Unix/Type/_path_commands	13 Oct 2011 14:34:00 -0000
@@ -80,7 +80,19 @@ if [[ -n $need_desc ]]; then
     compadd "$@" -ld descs -a dcmds && ret=0
   _wanted commands expl 'external command' compadd "$@" -a cmds && ret=0
 else
-  _wanted commands expl 'external command' compadd "$@" -k commands && ret=0
+  if zstyle -t ":completion:${curcontext}:" path-tags; then
+    integer i
+    local -a path_commands
+    for (( i = 1; i <= ${#path}; i++ )); do
+      path_commands=(${${commands:#^$path[i]/*}:t})
+      if (( ${#path_commands} )); then
+	_wanted commands-$i-${path[i]} expl "external command [${path[i]}]" \
+	  compadd "$@" -k path_commands
+      fi
+    done
+  else
+    _wanted commands expl 'external command' compadd "$@" -k commands && ret=0
+  fi
 fi
 
 return $ret

-- 
Peter Stephenson <pws@csr.com>            Software Engineer
Tel: +44 (0)1223 692070                   Cambridge Silicon Radio Limited
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