RUBY_PATCHLEVEL    22 version.c      const int ruby_patchlevel = RUBY_PATCHLEVEL;
RUBY_PATCHLEVEL    33 version.c          rb_define_global_const("RUBY_PATCHLEVEL", INT2FIX(RUBY_PATCHLEVEL));
RUBY_PATCHLEVEL    26 version.h      #define RUBY_PATCHLEVEL_STR "p"STRINGIZE(RUBY_PATCHLEVEL)