PATCH: handle newer sort style in zstyle completion

[Oliver Kiddle <opk@zsh.org>]

In looking over github issue #63 which pertains to the sort style, I
noticed that the zstyle completion for that still only offers true and
false. This updates it.

I merged that github issue minus the test case as that didn't quite make
sense to me given the style removal.

Oliver

diff --git a/Completion/Zsh/Command/_zstyle b/Completion/Zsh/Command/_zstyle
index 75acde5f7..bb0e1f5bc 100644
--- a/Completion/Zsh/Command/_zstyle
+++ b/Completion/Zsh/Command/_zstyle
@@ -111,7 +111,7 @@ styles=(
   show-ambiguity	 c:
   show-completer	 c:bool
   single-ignored         c:single-ignored
-  sort			 c:bool
+  sort			 c:sort-order
   special-dirs		 c:sdirs
   squeeze-slashes	 c:bool
   stop			 c:stop
@@ -571,6 +571,10 @@ while (( $#state )); do
       _message -e separators 'separator string'
       ;;
 
+    (sort-order)
+      _wanted sort-orders expl 'sort order' compadd -F line - true false match nosort numeric reverse
+      ;;
+
     (max-matches-width)
       _message -e numbers 'maximum display width for matches'
       ;;