require should accept a Pathname object like Kernel#require

[tenderlove]

Hi,

Kernel#require accepts a Pathname object (actually any object that responds to to_path), but Rubygems' require does not. Here is a demo:

$ ruby -rpathname -e'require Pathname.new("psych")'
$ ruby -rpathname -e'require "active_record"'
$ ruby -rpathname -e'require Pathname.new("active_record")'
/Users/aaron/.rbenv/versions/2.1.0-dev/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:109:in `end_with?': no implicit conversion of Pathname into String (TypeError)
    from /Users/aaron/.rbenv/versions/2.1.0-dev/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:109:in `rescue in require'
    from /Users/aaron/.rbenv/versions/2.1.0-dev/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:35:in `require'
    from -e:1:in `<main>'
$

This pull request has a test case. I haven't looked in to fixing it. :-)

[tenderlove]

Hi, this patch fixes my test, but I don't know if it's The Right Way™:

diff --git a/lib/rubygems/core_ext/kernel_require.rb b/lib/rubygems/core_ext/kernel_require.rb
index 0416644..84bb03f 100755
--- a/lib/rubygems/core_ext/kernel_require.rb
+++ b/lib/rubygems/core_ext/kernel_require.rb
@@ -38,6 +38,8 @@ module Kernel
   def require path
     RUBYGEMS_ACTIVATION_MONITOR.enter

+    path = path.to_path if path.respond_to? :to_path
+
     spec = Gem.find_unresolved_default_spec(path)
     if spec
       Gem.remove_unresolved_default_spec(spec)

[tenderlove]

I updated my PR with my fix. ❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️