Re: PATCH: 3.1.5-pws-8: dumping completions for speed

[Sven Wischnowsky <wischnow@informatik.hu-berlin.de>]

Peter Stephenson wrote:

> The following patch adds a file `dump' to the Functions/Completions
> directory.  This dumps out all the state information which the `init' file
> there has produced, so that for subsequent shell initialisations it can all
> be read in in one go.  This speeds up my total shell startup time including
> the new completions by a factor of around two, though I haven't timed it
> properly.  You just dot it and put the out put in $foo.dump, where $foo is
> where the file called Functions/Completions/init in the distribution lives
> in your setup; sourcing $foo finds $foo.dump automatically.

Yes, it was inacceptably slow. I had some problems with this, though:
in one place in `dump' print wasn't used with a `-' which failed for
me because in the `${(ov)...}' that came after it I need a `@' -- see
the patch below, which adds lots of `-'s, just to make sure... (haven't
checked it, but I guess in most places they are not needed). Also in
`init' we probably should use `builtin .' since users may have an
alias/function for it.

> ...
> 
> 4) I just made it check for $0.dump in init, so if it had to search the
> path for init, it won't find init.dump (that's why perl sets $0 to a full
> path name).

How about making this the default, but if the user has set a parameter 
(COMPDUMP or something) and that contains the name of a file, source
that one?

Bye
 Sven

diff -u of/Completion/dump Functions/Completion/dump
--- of/Completion/dump	Tue Feb 16 15:03:00 1999
+++ Functions/Completion/dump	Tue Feb 16 15:15:43 1999
@@ -42,7 +42,7 @@
   zle -lL |
   while read -A __d_line; do
     if [[ ${__d_line[5]} = __main_key_complete ]]; then
-      print ${__d_line}
+      print - ${__d_line}
       __d_bks=($__d_bks ${__d_line[3]})
     fi
   done
@@ -62,7 +62,7 @@
 
 __d_als=($(whence -wm '__*' |
 while read -A __d_line; do
-  [[ ${__d_line[2]} = function ]] && print ${__d_line[1]%:}
+  [[ ${__d_line[2]} = function ]] && print - ${__d_line[1]%:}
 done))
 
 # print them out:  about six to a line looks neat
@@ -102,7 +102,7 @@
 	    fi
 	  done
 
-print -l ${(ov)__d_zle}
-print "$__d_bks"
+print -l - "${(@ov)__d_zle}"
+print - "$__d_bks"
 
 unset __d_line __d_zle __d_bks __d_als __d_f
diff -u of/Completion/init Functions/Completion/init
--- of/Completion/init	Tue Feb 16 15:03:00 1999
+++ Functions/Completion/init	Tue Feb 16 15:17:34 1999
@@ -210,7 +210,7 @@
 
 
 if [[ -f $0.dump ]]; then
-  . $0.dump
+  builtin . $0.dump
 else
   # Now we make the files automatically autoloaded.
   for __i_dir in $fpath; do

--
Sven Wischnowsky                         wischnow@informatik.hu-berlin.de