ONIGENC_STEP_BACK  318 ext/mbstring/oniguruma/oniguruma.h #define ONIGENC_STEP_BACK(enc,start,s,n)
ONIGENC_STEP_BACK  376 ext/mbstring/oniguruma/oniguruma.h #define ONIGENC_STEP_BACK(enc,start,s,n) \