FL_USER4           46 debug.c                RUBY_FL_USER4       = FL_USER4,
FL_USER4          593 include/ruby/ruby.h #define RSTRING_EMBED_LEN_MASK (FL_USER2|FL_USER3|FL_USER4|FL_USER5|FL_USER6)
FL_USER4          623 include/ruby/ruby.h #define RARRAY_EMBED_LEN_MASK (FL_USER4|FL_USER3)
FL_USER4          749 include/ruby/ruby.h #define RBIGNUM_EMBED_LEN_MASK (FL_USER5|FL_USER4|FL_USER3)
FL_USER4          243 re.c           #define KCODE_FIXED FL_USER4