ruby.h: ISGRAPH

* include/ruby/ruby.h (ISGRAPH): add missing macro.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40605 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test_scanner_events.rb: assert_location

* test/ripper/test_scanner_events.rb (TestRipper#assert_location):
  rename so skipped in backtraces.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40606 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
parse.y: fail if invalid name

* parse.y (parser_yylex): fail if $, @, @@ are not followed by a valid
  name character.  [ruby-core:54846] [Bug #8375].

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40607 b2dd03c8-39d4-4d8f-98ff-823fe69b080e