Issue #2542 has been updated by Yui NARUSE. Ah, Martin is right, it's RFC 3987 and RFC 3986 will be still alive. Anyway Bob Aman introduces an alternative library named Addressable. http://addressable.rubyforge.org/ It looks good but some incompatibilities for current URI library. I'll suggest to bundle Addressable and obsolete current URI lib, but I have to plan its migration path. ---------------------------------------- http://redmine.ruby-lang.org/issues/show/2542 ---------------------------------------- http://redmine.ruby-lang.org