Bug #20084: Breaking change with Regexp.new on 3.3.0

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [x86_64-linux]
• Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN

[paddor (Patrik Wenger)]

Regexp.new used to take up to 3 arguments, but now only 1..2 are allowed:

[1] pry(main)> Regexp.new 'abc', 'i', 'n'
ArgumentError: wrong number of arguments (given 3, expected 1..2)
from (pry):1:in `initialize'

On 3.2.2:

[1] pry(main)> Regexp.new 'abc', 'i', 'n'
=> /abc/in

[hsbt (Hiroshi SHIBATA)]

• Related to Bug #18797: Third argument to Regexp.new is a bit broken added

[hsbt (Hiroshi SHIBATA)]

• Status changed from Open to Closed

It's intentional changes. see https://bugs.ruby-lang.org/issues/18797

[nobu (Nobuyoshi Nakada)]

I think we needed to add it to Compatibility issues in NEWS.md.

[paddor (Patrik Wenger)]

hsbt (Hiroshi SHIBATA) wrote in #note-2:

It's intentional changes. see https://bugs.ruby-lang.org/issues/18797

Thanks.

nobu (Nobuyoshi Nakada) wrote in #note-3:

I think we needed to add it to Compatibility issues in NEWS.md.

Yeah that would be nice.