Feature #16605: Support argument delegation (...) with blocks/define_method

• Status: Rejected
• Assignee: -
• Target version: -

[svoop (Sven Schwyn)]

(I couldn't find anything on this in the bug tracker or other official sources, hope it's not a duplicate since it's kind of tricky to search for it.)

The following doesn't work on Ruby 2.7:

define_method(:delegate) do |...|    # <-- syntax error
  target(...)
end

Are there any plans to support argument delegation in block arguments?

[shevegen (Robert A. Heiler)]

It may be that this is a new suggestion, at the least I don't recall a similar proposal
although perhaps others thought about it before, since it may make sense (e. g. if
you wish to dynamically add methods).

[matz (Yukihiro Matsumoto)]

• Status changed from Open to Rejected

You may think it's handy. But it's far more complicated than you think. For example, define_method may be called from a method with argument forwarding. At least for the moment, it does not worth the cost of implementation/complexity.

Matz.