onigenc_step_back 377 ext/mbstring/oniguruma/oniguruma.h onigenc_step_back((enc),(start),(s),(n)) onigenc_step_back 423 ext/mbstring/oniguruma/oniguruma.h OnigUChar* onigenc_step_back P_((OnigEncoding enc, const OnigUChar* start, const OnigUChar* s, int n));