+/* In the format `file_name:line.column', append BOUND to MUSCLE. Use digraphs
+ for special characters in the file name. */
+void muscle_boundary_grow (char const *key, boundary bound);
+
+/* Grow KEY for the occurrence of the name USER_NAME at LOC appropriately for
+ use with b4_check_user_names in ../data/bison.m4. USER_NAME is not escaped
+ with digraphs, so it must not contain `[' or `]'. */
+void muscle_grow_user_name_list (char const *key, char const *user_name,
+ location loc);
+