That is becoming ridiculous. Any chance to have single entry point (wrapper?) 
for ZLE and completion functions?

Index: Src/Zle/compcore.c
===================================================================
RCS file: /cvsroot/zsh/zsh/Src/Zle/compcore.c,v
retrieving revision 1.71
diff -u -p -r1.71 compcore.c
--- Src/Zle/compcore.c  10 Aug 2005 10:56:41 -0000      1.71
+++ Src/Zle/compcore.c  15 Aug 2005 18:04:45 -0000
@@ -353,8 +353,18 @@ do_completion(UNUSED(Hookdef dummy), Com
        clearlist = 1;
        ret = 1;
        minfo.cur = NULL;
-       if (useline < 0)
+       if (useline < 0) {
+           /* unmetafy line before calling ZLE */
+           int remetafy = 0;
+
+           if (zlemetaline != NULL) {
+               unmetafy_line();
+               remetafy = 1;
+           }
            ret = selfinsert(zlenoargs);
+           if (remetafy)
+               metafy_line();
+       }
        goto compend;
     }
     zsfree(lastprebr);
@@ -367,9 +377,18 @@ do_completion(UNUSED(Hookdef dummy), Com
        if (nmatches)
             do_ambig_menu();
        ret = !nmatches;
-    } else if (useline < 0)
+    } else if (useline < 0) {
+       /* unmetafy line before calling ZLE */
+       int remetafy = 0;
+
+       if (zlemetaline != NULL) {
+           unmetafy_line();
+           remetafy = 1;
+       }
        ret = selfinsert(zlenoargs);
-    else if (!useline && uselist) {
+       if (remetafy)
+           metafy_line();
+    } else if (!useline && uselist) {
        /* All this and the guy only wants to see the list, sigh. */
        zlemetacs = 0;
        foredel(zlemetall);