I've just stumbled with this problem, and seems like the fix you made, doesn't work. The issue, is that Dir.chdir accepts a block with one argument (the path from the new dir). So, the problem with setting the block argument to name, is that it will try to get a config named with the changed path, not the passed name. Therefore, the fix should be something like:

do_get = lambda do |path|
  command('config', ['--get', name])
end

Or with the 1.9 block syntax:

do_get = ->(path){command('config', ['--get', name])}

I've added a new pull request, see #35.

Ah OK, thanks :) I'll close this and trust that your change is the right one ;)