is_bol_anchored  1328 src/regexp.c           return is_bol_anchored(SCM_CADR(ast));
is_bol_anchored  1333 src/regexp.c               if (!is_bol_anchored(SCM_CAR(ap))) return FALSE;
is_bol_anchored  1344 src/regexp.c       if (is_bol_anchored(ast)) ctx->rx->flags |= SCM_REGEXP_BOL_ANCHORED;