RUBY_VERSION       15 ext/tk/tcltklib.c #ifndef RUBY_VERSION
RUBY_VERSION     10009 ext/tk/tcltklib.c         + strlen(RUBY_VERSION)
RUBY_VERSION     10023 ext/tk/tcltklib.c             RUBY_VERSION, RUBY_RELEASE_DATE,
RUBY_VERSION       29 version.c      const char ruby_version[] = RUBY_VERSION;
RUBY_VERSION       64 version.h          "ruby "RUBY_VERSION		    \