From: Neil Mc Laughlin <nml@...>
Date: 2004-06-14T20:13:42+09:00
Subject: method_missing and send

I'm in the process of writing a logging package for a project. The actual
logging methods can be specified at runtime and are implemented with a class
method_missing call.

That works fine until I call the warn method using 'send'. I would have
expected the object to respond identically to both the direct invocation and
the indirect invocation via 'send'.

Is this a bug in ruby or have I missed something?

class B
  def self.method_missing(sym, *args)
    puts "%s: %s"%[sym, args[1]]
  end
end

B.log(self, "There was a young man called McKnight,")
B.send(:log, self, "Who could travel faster than light.")
B.warn(self, "One day at about noon, he went to the moon")
B.send(:warn, self, "And arrived back the previous night.")

bash-2.05b$ ruby -v
ruby 1.8.1 (2004-01-27) [i386-mswin32]
bash-2.05b$
bash-2.05b$ tmp.rb
log: There was a young man called McKnight,
log: Who could travel faster than light.
warn: One day at about noon, he went to the moon
./tmp.rb:71:in `warn': wrong number of arguments(2 for 1) (ArgumentError)
 from ./tmp.rb:71:in `send'
 from ./tmp.rb:71
bash-2.05b$


Neil.