gs_uint32_t str_match_offset(gs_uint32_t offset,vstring *s1,vstring *s2);
gs_uint32_t byte_match_offset( gs_uint32_t offset, gs_uint32_t val,vstring *s2);
gs_uint32_t str_match_offset(gs_uint32_t offset,vstring *s1,vstring *s2);
gs_uint32_t byte_match_offset( gs_uint32_t offset, gs_uint32_t val,vstring *s2);