> irb(main):002:0> help "String#chars"

Wow that is way cool and I would think unknown by most people [?].  It
is what I have been missing somehow [?]

Obviously I am still debiliated in this regard, as apparently make
doesn't install the rdocs by default for 1.8.x?

Here's some attempts at it.

>> help "String#chars"
NameError: undefined method `execute' for module `IRB::ExtendCommand::Help'
        from (eval):4:in `instance_method'
        from (eval):4:in `irb_help'
        from (irb):8
        from /home/byu_p2pweb/installs/ruby_19_trunk/bin/irb:12:in `<main>'
irb(main):009:0> RUBY_VERSION
=> "1.9.2"

irb(main):002:0>  help "String#chars"
Nothing known about String#chars
=> nil
irb(main):003:0> RUBY_VERSION
=> "1.8.7"

irb(main):004:0> help "String#chars"
No ri documentation found in:

Was rdoc run to create documentation?

Errno::EINVAL: Invalid argument - ¢¾
        from c:/ruby18/lib/ruby/1.8/rdoc/usage.rb:100:in `initialize'
        from c:/ruby18/lib/ruby/1.8/rdoc/usage.rb:100:in `open'
        from c:/ruby18/lib/ruby/1.8/rdoc/usage.rb:100:in `usage_no_exit'
        from c:/ruby18/lib/ruby/1.8/rdoc/usage.rb:93:in `usage'
        from c:/ruby18/lib/ruby/1.8/rdoc/ri/ri_driver.rb:39:in
`report_missing_documentation'
        from c:/ruby18/lib/ruby/1.8/rdoc/ri/ri_driver.rb:25:in `initialize'
        from c:/ruby18/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`gem_original_require'
        from c:/ruby18/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`require'
        from (eval):3:in `help'
        from (irb):4
        from ¢¾:0
irb(main):005:0> RUBY_VERSION
=> "1.8.6"

Also does it work for gems?
Also isn't it kinder slow since it uses ri not fastri?  At least it
doesn't require a running server, though.

re: http://p.ramaze.net/17901
Nice.  Though it appears that Pathname.chdir doesn't exist, if it used
SCRIPT_LINES__ for cacheing it would be lightning fast.  I can't
compare with the speed of the help command since I don't yet have a
working instance.
This makes me want to convert to 1.9 just to be able to use #source_location.
Brent is it all right if I submit your #source_location patch to
redmine as a separate feature request for the 1.8.x branch?

Thanks.
-=r