Ruby 3.0 argument forwarding does not parse

[mildred]

https://rubyreferences.github.io/rubychanges/3.0.html#arguments-forwarding--supports-leading-arguments

The following minimal ruby example do not parse:

def a(...)
  b(...)
end

[danleyden]

I believe this is a duplicate of #311

[zenspider]

Dupe and fixed