ANCHOR_WORD_END  1421 regcomp.c        case ANCHOR_WORD_END:       r = add_opcode(reg, OP_WORD_END);       break;
ANCHOR_WORD_END  6229 regcomp.c          case ANCHOR_WORD_END:        fputs("word end", f);       break;
ANCHOR_WORD_END  3268 regparse.c           tok->u.anchor = ANCHOR_WORD_END;