HIALPHA 64 ext/filter/sanitizing_filters.c #define DEFAULT_URL_ENCODE LOWALPHA HIALPHA DIGIT "-._" HIALPHA 310 ext/filter/sanitizing_filters.c const unsigned char allowed_list[] = LOWALPHA HIALPHA DIGIT "!#$%&'*+-=?^_`{|}~@.[]"; HIALPHA 324 ext/filter/sanitizing_filters.c const unsigned char allowed_list[] = LOWALPHA HIALPHA DIGIT SAFE EXTRA NATIONAL PUNCTUATION RESERVED;