Bug #20062: Numbered parameters are broken in Ruby 3.3-dev

• Status: Closed
• Assignee: nobu (Nobuyoshi Nakada)
• Target version: 3.3
• ruby -v: ruby 3.3.0dev (2023-12-13T13:16:11Z master f390c51b15) [x86_64-linux]
• Backport: 3.0: REQUIRED, 3.1: REQUIRED, 3.2: REQUIRED

[osyo (manga osyo)]

Define Numbered parameters and a method in one block and then reference Numbered parameters in another block, you will get a SyntaxError in Ruby 3.3.
This is not a problem in Ruby 3.2.

'a'.tap do
  p _1

  def f1; end
end

'a'.tap do
  p _1
end

__END__
output:
Ruby 3.2.2 =>
"a"
"a"

Ruby 3.3.0dev(2023-12-13T13:16:11Z master f390c51b15) =>
/path/to/test.rb:
/path/to/test.rb:8: numbered parameter is already used in (SyntaxError)
/path/to/test.rb:2: outer block here

I noticed this while checking the operation of https://bugs.ruby-lang.org/issues/18966.
I haven't checked, but https://bugs.ruby-lang.org/issues/19619 may be related.

[k0kubun (Takashi Kokubun)]

• Assignee set to nobu (Nobuyoshi Nakada)

I haven't checked, but https://bugs.ruby-lang.org/issues/19619 may be related.

$ ./miniruby -v /tmp/test.rb
ruby 3.3.0dev (2023-05-02T09:27:10Z master 31774bd565) [x86_64-linux]
"a"
"a"

$ ./miniruby -v /tmp/test.rb
ruby 3.3.0dev (2023-05-02T08:39:18Z master b15e88e0fc) [x86_64-linux]
/tmp/test.rb: /tmp/a.rb:8: numbered parameter is already used in (SyntaxError)
/tmp/test.rb:2: outer block here

It indeed seems to have been broken since https://github.com/ruby/ruby/pull/7779.

[k0kubun (Takashi Kokubun)]

• Backport changed from 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN to 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONTNEED

[k0kubun (Takashi Kokubun)]

• Target version set to 3.3

[nobu (Nobuyoshi Nakada)]

https://github.com/ruby/ruby/pull/9255

[nobu (Nobuyoshi Nakada)]

• Backport changed from 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONTNEED to 3.0: REQUIRED, 3.1: REQUIRED, 3.2: REQUIRED

[nobu (Nobuyoshi Nakada)]

• Is duplicate of Bug #18966: Strange behavior when numbered parameters and method definition are both used in a block added

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset git|92b10f5be7453aceb5863e46ac775a4ddbf83b97.

---

[Bug #20062] Fixed numbered parameter syntax error

At the method definition, the local scope that saves the context of
the numbered parameters needs to be pushed before saving.