From: Charles Oliver Nutter Date: 2012-02-14T04:03:54+09:00 Subject: [ruby-core:42565] Tests for String#% with % and %{foo} forms? Hello! I'm trying to find test cases for the % and %{foo} forms of Sting#% and not finding anything in 1.9.3's test/ruby/test_string.rb. Am I looking in the wrong place? "%f" % {foo: 1} # => "1.000000" "%{foo}f" % {foo: 1} # => "1f" - Charlie