prolog_atom      6030 lib-src/etags.c static size_t prolog_atom (char *, size_t);
prolog_atom      6096 lib-src/etags.c   ptrdiff_t len = prolog_atom (s, 0);
prolog_atom      5216 test/manual/etags/c-src/etags.c static size_t prolog_atom (char *, size_t);
prolog_atom      5288 test/manual/etags/c-src/etags.c   pos = prolog_atom (s, 0);