zsh: complete unknown commands normally

zsh: complete unknown commands normally

--- a/contrib/zsh_completion	Tue Oct 31 13:22:05 2006 +0100
+++ b/contrib/zsh_completion	Tue Oct 31 12:05:47 2006 -0800
@@ -80,7 +80,10 @@
   then
     curcontext="${curcontext%:*:*}:hg-${cmd}:"
     _hg_cmd_${cmd}
-    return
+  else
+    # complete unknown commands normally
+    _arguments -s -w : $_hg_global_opts \
+      '*:files:_files -W $(_hg_cmd root)'
   fi
 }