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From: Bart Schaefer <schaefer@brasslantern.com>
Message-id: <110503080432.ZM15979@torch.brasslantern.com>
Date: Tue, 03 May 2011 08:04:32 -0700
In-reply-to: <110503073902.ZM15889@torch.brasslantern.com>
Comments: In reply to Bart Schaefer <schaefer@brasslantern.com>
 "Re: zle messes up 'words' variable?" (May  3,  7:39am)
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To: Felipe Contreras <felipe.contreras@gmail.com>
Subject: Re: zle messes up 'words' variable?
Cc: zsh-workers@zsh.org
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On May 3,  7:39am, Bart Schaefer wrote:
}
} ... bashcompinit has responsibility
} for loading the bash completion functions in a way that makes them
} compatible.  That's not the same as first loading bashcompinit and
} then independently defining a new completion, though I lean toward 
} the conclusion that use of the bash-compatible "complete" command is
} probably the correct place to fix this if it can be managed.

Try this:

Index: Completion/bashcompinit
===================================================================
diff -c -r1.2 bashcompinit
--- Completion/bashcompinit	22 Jun 2004 07:53:03 -0000	1.2
+++ Completion/bashcompinit	3 May 2011 15:01:09 -0000
@@ -120,7 +120,13 @@
       ;;
       F)
         COMPREPLY=()
-	$OPTARG "${words[0]}" "${words[CURRENT-1]}" "${words[CURRENT-2]}"
+        (){
+          set -- "${words[0]}" "${words[CURRENT-1]}" "${words[CURRENT-2]}"
+          # There may be more things we need to add to this typeset to
+          # protect bash functions from compsys special variable names
+          typeset -h words
+          $OPTARG "$@"
+        }
 	results+=( "${COMPREPLY[@]}" )
       ;;
       G)