X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/f1886bb2808a471b18e1416e0f821d08850d116e..b526ee6116d3a769d1af313163ad4eaa910b1037:/data/lalr1.cc

diff --git a/data/lalr1.cc b/data/lalr1.cc
index b7b64c3c..8f3ebad8 100644
--- a/data/lalr1.cc
+++ b/data/lalr1.cc
@@ -105,6 +105,8 @@ m4_define([b4_constructor],
 		    [])])
 
 
+# We do want M4 expansion after # for CPP macros.
+m4_changecom()
 m4_divert(0)dnl
 #output "b4_output_header_name"
 b4_copyright([C++ Skeleton parser for LALR(1) parsing with Bison],