ONIG_ESCAPE_UCHAR_COLLISION  107 include/ruby/oniguruma.h #ifndef ONIG_ESCAPE_UCHAR_COLLISION
ONIG_ESCAPE_UCHAR_COLLISION   40 regenc.h       #ifdef ONIG_ESCAPE_UCHAR_COLLISION
ONIG_ESCAPE_UCHAR_COLLISION  114 regint.h       #ifdef ONIG_ESCAPE_UCHAR_COLLISION