From e5e8350fcb3ea321efc28aaf88413677b3c97613 Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Sun, 12 Nov 2017 21:55:10 -0800
Subject: [PATCH] More efficient wordcount.lua example.

---
 doc/lua-filters.md | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/doc/lua-filters.md b/doc/lua-filters.md
index cee4240c7..a5c9905ab 100644
--- a/doc/lua-filters.md
+++ b/doc/lua-filters.md
@@ -408,8 +408,7 @@ words = 0
 wordcount = {
   Str = function(el)
     -- we don't count a word if it's entirely punctuation:
-    local s = el.text:gsub("%p","")
-    if #s > 0 then
+    if el.text:match("%P") then
         words = words + 1
     end
   end,