#to_r easily confused with Numeric#to_r :(

[yaauie]

#to_r means 'to rational' everywhere else. Perhaps supply a more descriptive method for clarity?

[krainboltgreene]

Good point, ruby tries to look for .to_regexp: http://www.ruby-doc.org/core-2.0.0/Regexp.html#method-c-try_convert

I'll have to push a new major version to fix this, but I was going to anyways.

[yaauie]

Oops. Looks like this is a dup of #2.