From: Mark Hubbart <discordantus@...>
Date: 2005-04-21T02:29:55+09:00
Subject: Re: No Rescue from RubyGem's require__ ?

On 4/20/05, Trans <transfire@gmail.com> wrote:
> I have the latest version of RubyGems installed and I seem to be
> getting an unexpected error b/c of it:
> 
> irb(main):001:0> begin
> irb(main):002:1*   require 'carat/functor'
> irb(main):003:1> rescue
> irb(main):004:1>   class Functor
> irb(main):005:2>     def initialize(&func) ; @func = func ; end
> irb(main):006:2>     def method_missing(op, *args) ; @func.call(op,
> *args) ; end
> irb(main):007:2>   end
> irb(main):008:1> end
> LoadError: No such file to load -- carat/functor
>         from
> /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:18:in
> `require__'
>         from
> /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:18:in `require'
>         from (irb):2
> 
> Shouldn't the rescue clause be picked up?

Without rubygems:

begin
  require "nonesuch"
rescue
  puts "rescued!"
end
LoadError: No such file to load -- nonesuch
        from (irb):2:in `require'
        from (irb):2

you need to rescue LoadError:

require 'rubygems'
    ==>true
begin
  require "nonesuch"
rescue LoadError
  puts "rescued!"
end
rescued!
    ==>nil

cheers,
Mark