+# b4_identification
+# -----------------
+m4_define([b4_identification],
+[/* Identify Bison output. */
+[#]define YYBISON 1
+
+/* Skeleton name. */
+[#]define YYSKELETON_NAME "b4_skeleton"
+
+/* Pure parsers. */
+[#]define YYPURE b4_pure
+
+/* Using locations. */
+[#]define YYLSP_NEEDED b4_locations_flag
+])
+
+
+
+## ------------------------ ##
+## Pure/impure interfaces. ##
+## ------------------------ ##
+
+
+# b4_user_args
+# ------------
+m4_define([b4_user_args],
+[m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])])
+
+
+# b4_parse_param
+# --------------
+# If defined, b4_parse_param arrives double quoted, but below we prefer
+# it to be single quoted.
+m4_define_default([b4_parse_param])
+m4_define([b4_parse_param],
+b4_parse_param))
+
+
+