From 9761283c8fd58fa04d9e04b45ef9a30325dc342e Mon Sep 17 00:00:00 2001
From: Matthew Pickering <matthewtpickering@gmail.com>
Date: Sat, 6 Dec 2014 22:58:40 +0000
Subject: Text.Pandoc.Pretty: Improve performance of realLength

Eliminates memory usage and twofold increase in speed.
---
 src/Text/Pandoc/Pretty.hs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/Text')

diff --git a/src/Text/Pandoc/Pretty.hs b/src/Text/Pandoc/Pretty.hs
index 9ee7fe94a..2f2656086 100644
--- a/src/Text/Pandoc/Pretty.hs
+++ b/src/Text/Pandoc/Pretty.hs
@@ -534,4 +534,4 @@ charWidth c =
 -- | Get real length of string, taking into account combining and double-wide
 -- characters.
 realLength :: String -> Int
-realLength = sum . map charWidth
+realLength = foldr (\a b -> charWidth a + b) 0
-- 
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