PREV_NOTWORD_CONSTRAINT  197 lib/regex_internal.h #define PREV_NOTWORD_CONSTRAINT 0x0002
PREV_NOTWORD_CONSTRAINT  210 lib/regex_internal.h WORD_FIRST = PREV_NOTWORD_CONSTRAINT | NEXT_WORD_CONSTRAINT,
PREV_NOTWORD_CONSTRAINT  212 lib/regex_internal.h INSIDE_NOTWORD = PREV_NOTWORD_CONSTRAINT | NEXT_NOTWORD_CONSTRAINT,