RSTRING_LEN        12 ext/tk/stubs.c #define RSTRING_LEN(s) (RSTRING(s)->len)
RSTRING_LEN        36 ext/tk/tcltklib.c #define RSTRING_LEN(s) (RSTRING(s)->len)
RSTRING_LEN        34 ext/tk/tkutil/tkutil.c #define RSTRING_LEN(s) (RSTRING(s)->len)
RSTRING_LEN       963 include/ruby/ruby.h #define RSTRING_LEN(str) \