Re: Completion listing of command options ( Re: Size of select listing?)

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

I wrote:

> Andrej Borsenkow wrote:
>
> ...
> 
> > Still,  _arguments, even with option_prefix set, behaves funnily:
> > 
> > patch TAB -> completes files. It's O.K.
> > patch foo TAB -> again files. Still O.K.
> > patch foo bar TAB - lists all options! But, patch can have only two arguments -
> > so, I'd expected some message about it.
> 
> The fact that you only get options as possible matches even though you 
> normally don't see them could be taken as a (strong) hint for that,
> couldn't it? However, it wouldn't be hard to add either `:no more arguments:'
> descriptions to the calls of `_arguments' or build this into
> `_arguments'.

This makes `_arguments' spit out a message saying `no more arguments'
in such command line positions. Is that OK for everyone?

Bye
 Sven

P.S.:   I haven't tested it with all completion function (you may have
        guessed that already ;-), but this message can also be used as a 
        measure for the quality of the uses of `_arguments' -- if it
        doesn't print the message in places where no more normal
        argument is understood by the program, the descriptions to
        `_arguments' are probably wrong.
P.P.S.: Not so long ago we were happy if TAB would complete the right
        files and things like that. Nowadays...


diff -u oldcompletion/Base/_arguments Completion/Base/_arguments
--- oldcompletion/Base/_arguments	Mon Sep 13 13:58:09 1999
+++ Completion/Base/_arguments	Mon Sep 13 15:39:19 1999
@@ -8,7 +8,7 @@
 local args rest ws cur nth def nm expl descr action opt arg tmp xor
 local single uns ret=1 aret soptseq soptseq1 sopts prefix _line odescr
 local beg optbeg argbeg nargbeg inopt inrest fromrest cmd="$words[1]"
-local matched curopt
+local matched curopt noargs
 
 # Associative arrays used to collect information about the options.
 
@@ -625,6 +625,10 @@
       fromrest=yes
       [[ -n "$inrest" ]] && opt=''
     fi
+    if [[ -z "$def" ]]; then
+      _message 'no more arguments'
+      noargs=yes
+    fi
   fi
 
   # In any case, we have to complete option names here, but we may
@@ -814,7 +818,7 @@
   # Probably add the option names.
 
   if [[ -n "$opt" &&
-        ( ( nm -eq compstate[nmatches] && -z "$aret" ) ||
+        ( ( ( nm -eq compstate[nmatches] || -n "$noargs" ) && -z "$aret" ) ||
           -z "$compconfig[option_prefix]" || 
           "$compconfig[option_prefix]" = *\!${cmd}* ||
           "$PREFIX" = [-+]* ) ]]; then


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