diagnostics: improve -fcaret for list of accepted values

[bison.git] / data / bison.m4

diff --git a/data/bison.m4 b/data/bison.m4
index bd8af095a55252d19de108ddc8398a2def08447e..6f06266d52360e7d8ca6b0cfc802f465c18a4568 100644 (file)
--- a/data/bison.m4
+++ b/data/bison.m4
@@ -829,6 +829,13 @@ b4_percent_define_if_define([parse.assert])
 b4_percent_define_if_define([parse.trace])
 b4_percent_define_if_define([variant])
 
+# b4_bison_locations_if([IF-TRUE])
+# --------------------------------
+# Expand IF-TRUE if using locations, and using the default location
+# type.
+m4_define([b4_bison_locations_if],
+[b4_locations_if([b4_percent_define_ifdef([[api.location.type]], [], [$1])])])
+
 
 # b4_error_verbose_if([IF-ERRORS-ARE-VERBOSE], [IF-NOT])
 # ------------------------------------------------------