Hirb does not recognize "/bin/cat" as a valid pager

[ddoherty03]

When irb is invoked in emacs with inf-ruby, it has only a dumb terminal to work with so, as a preliminary step it sets the PAGER environment variable to "/bin/cat" to effectively disable paging.
Hirb currently considers "/bin/cat" an invalid pager because it is an absolute path name. It seems it should strip the leading path first before checking its validity.

I believe this fixes it in pager.rb :

  def pager_command(*commands) #:nodoc:
     @pager_command = (!@pager_command.nil? && commands.empty?) ? @pager_command :
      begin
        env_pager = ENV['PAGER'] ? File.basename(ENV['PAGER']) : nil
        commands = [env_pager, 'less', 'more', 'pager'] if commands.empty?
        commands.compact.uniq.find {|e| Util.command_exists?(e[/\w+/]) }
      end
  end

[cldwalker]

Thanks for reporting your issue! This is one of my 17 active issues. Use that link to check how soon your issue will be answered. Don't forget to check your issue against this project's CONTRIBUTING.md. Cheers.

[cldwalker]

Fixed by your pull in #79