From: "James M. Lawrence" Date: 2009-09-23T00:13:06+09:00 Subject: [ruby-core:25713] [Bug #2131] f(not x) => syntax error Issue #2131 has been updated by James M. Lawrence. This should have been classified as a feature request. Since (not x) is legal syntax, it is my opinion that f(not x) should be legal. ---------------------------------------- http://redmine.ruby-lang.org/issues/show/2131 ---------------------------------------- http://redmine.ruby-lang.org