From c02008a6745dd5f135370d375ff58d9789a3f13b Mon Sep 17 00:00:00 2001
From: David Levine <levinedl@acm.org>
Date: Fri, 10 Jan 2014 20:49:24 -0800
Subject: [PATCH] Reworked LFLAGS hack for flex 2.5.35 and 2.5.36 to work on
 Ubuntu.  And use sed instead of ed.

---
 configure.ac | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/configure.ac b/configure.ac
index 9b7bb49e..434efaac 100644
--- a/configure.ac
+++ b/configure.ac
@@ -503,11 +503,9 @@ dnl http://sourceforge.net/p/flex/bugs/140/
 AS_IF([test "$LEX" = flex],
       [AS_CASE([`$LEX -V`],
                [flex\ 2.5.35], [LFLAGS=\
-'; printf "%s\n" '\''1,$$s/(size_t) \(num_to_read\)/\1/'\'' w q | ed -s $@; \
-true'],
+'; sed -e "s/	int n;/	size_t n;/" $@ >$@.tmp && mv -f $@.tmp $@; true'],
                [flex\ 2.5.36], [LFLAGS=\
-'; printf "%s\n" '\''1,$$s/\(	\)int i;/\1yy_size_t i;/'\'' w q | ed -s $@; \
-true'])
+'; sed -s "s/\(	\)int i;/\1yy_size_t i;/" $@ >$.tmp && mv -f $@.tmp $@; true'])
        AC_SUBST([LFLAGS])])
 
 dnl ----------------
-- 
2.56.0