Issue #5411 has been updated by Eric Hodel. I improved group_by in r33417 based on your work. ---------------------------------------- Bug #5411: Some enum.c doc tweaks http://redmine.ruby-lang.org/issues/5411 Author: b t Status: Closed Priority: Normal Assignee: Eric Hodel Category: DOC Target version: 1.9.x ruby -v: -- I tried to fix some of the method descriptions and made. Please check group_by if this is any better than the original version. I had trouble finding a concise description. Thanks for reviewing. -- http://redmine.ruby-lang.org