X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/f1886bb2808a471b18e1416e0f821d08850d116e..09903f303ac0547ff6b6bf3068fd4dc9c2acb0f4:/data/yacc.c

diff --git a/data/yacc.c b/data/yacc.c
index 11edba30..0bbd4827 100644
--- a/data/yacc.c
+++ b/data/yacc.c
@@ -156,7 +156,8 @@ m4_popdef([b4_dollar_dollar])dnl
 ])
 
 
-
+# We do want M4 expansion after # for CPP macros.
+m4_changecom()
 m4_divert(0)dnl
 #output "b4_output_parser_name"
 b4_copyright([Skeleton parser for Yacc-like parsing with Bison],