[ruby-core:50743] [ruby-trunk - Bug #7540] Proc#parameters cannot show :opt with :rest and :keyword

Issue #7540 has been updated by Eregon (Benoit Daloze).


I've started to take a look at this, and I wish to solve it if I find the way.
But of course if I'm taking too much time or somebody solves it before it's fine,
although I would prefer collaborating with them (I suppose mame, as he did r34137).
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Bug #7540: Proc#parameters cannot show :opt with :rest and :keyword
https://bugs.ruby-lang.org/issues/7540#change-34595

Author: no6v (Nobuhiro IMAI)
Status: Open
Priority: Normal
Assignee: 
Category: core
Target version: 
ruby -v: ruby 2.0.0dev (2012-12-10 trunk 38297) [x86_64-linux]


When an :opt arg is specified with :rest and :key args,
Proc#parameters (as well as *Method) cannot show it as below:

->(opt = :ion, *rest, key: :word){}.parameters # => [[:rest, :rest], [:key, :key]]



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