X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/42ee26bb96ea939c40c1c922ba404456e718b823..3a2803df74bf43b384db752e87be94a1f64fa847:/data/bison.m4?ds=inline

diff --git a/data/bison.m4 b/data/bison.m4
index 8c210e8d..31f78181 100644
--- a/data/bison.m4
+++ b/data/bison.m4
@@ -22,14 +22,17 @@
 ## Identification.  ##
 ## ---------------- ##
 
-# b4_copyright(TITLE, YEARS)
-# --------------------------
+# b4_copyright(TITLE, [YEARS])
+# ----------------------------
+# If YEARS are not defined, use b4_copyright_years.
 m4_define([b4_copyright],
 [b4_comment([A Bison parser, made by GNU Bison b4_version.])
 
 b4_comment([$1
 
-m4_text_wrap([Copyright (C) $2 Free Software Foundation, Inc.], [   ])
+]m4_dquote(m4_text_wrap([Copyright (C)
+]m4_ifval([$2], [[$2]], [m4_defn([b4_copyright_years])])[
+Free Software Foundation, Inc.]))[
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -550,7 +553,7 @@ m4_define([b4_check_user_names_wrap],
                                [b4_percent_]$1[_user_]$2[s],
                                [[b4_percent_]$1[_bison_]$2[s]])])])
 
-m4_wrap([
+m4_wrap_lifo([
 b4_check_user_names_wrap([[define]], [[variable]])
 b4_check_user_names_wrap([[code]], [[qualifier]])
 ])