Issue #4655 has been reported by Tinco Andringa. ---------------------------------------- Bug #4655: String#to_c does not support scientific notation http://redmine.ruby-lang.org/issues/4655 Author: Tinco Andringa Status: Open Priority: Normal Assignee: Category: core Target version: ruby -v: ruby 1.9.3dev (2011-05-05 trunk 31435) [x86_64-darwin10.5.0] Specs have been added for this but I did not find an issue for it so I report it here. Example: assert_equals('2e3+2e4i'.to_c, Complex(2e3, 2e4)) -- http://redmine.ruby-lang.org