NEXT_WORD_CONSTRAINT  198 lib/regex_internal.h #define NEXT_WORD_CONSTRAINT 0x0004
NEXT_WORD_CONSTRAINT  209 lib/regex_internal.h INSIDE_WORD = PREV_WORD_CONSTRAINT | NEXT_WORD_CONSTRAINT,
NEXT_WORD_CONSTRAINT  210 lib/regex_internal.h WORD_FIRST = PREV_NOTWORD_CONSTRAINT | NEXT_WORD_CONSTRAINT,