Bug #15673: Number args + Ripper

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 2.7.0dev (2019-03-18 trunk 67295) [x86_64-darwin18]
• Backport: 2.4: UNKNOWN, 2.5: UNKNOWN, 2.6: UNKNOWN

[kddnewton (Kevin Newton)]

Hi there -

Love the new number args for blocks. When I run

[1, 2, 3].map { @1 * 2 }

everything works. However, when I run:

require 'ripper'; Ripper.new('[1, 2, 3].map { @1 * 2 }').parse

it returns nothing and says there's an error.

[kddnewton (Kevin Newton)]

To be clear, I mean that:

require 'ripper'; Ripper.new('[1, 2, 3].map { @1 * 2 }').tap(&:parse).error?

returns true

[kddnewton (Kevin Newton)]

Some more investigation yields that compile_error is called with:

identifier false is not valid to get

[kddnewton (Kevin Newton)]

• File ripper.patch ripper.patch added

I think I found it. I've attached a patch file. Please forgive me if I'm doing this wrong, this is my first contribution.

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset trunk|r67306.

---

parse.y: fix var_ref of numbered param in ripper

• parse.y (string_dvar, user_variable): register numbered
  parameter in ripper for var_ref.
  [ruby-core:91867] [Bug #15673]