Bug #18670: MatchData#[start, length] pads nil values when negative start is given

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: 3.0.3
• Backport: 2.6: UNKNOWN, 2.7: REQUIRED, 3.0: REQUIRED, 3.1: DONE

[bjfish (Brandon Fish)]

Example

irb(main):001:0> /(.)(.)(\d+)(\d)/.match("THX1138.")[-1, 10]
=> ["8", nil, nil, nil, nil, nil, nil, nil, nil, nil]

I would expect this to be consistent with String or Array for example:

irb(main):002:0> "hello"[-1, 10]
=> "o"
irb(main):003:0> [1,2,3][-1,10]
=> [3]

[nobu (Nobuyoshi Nakada)]

• Backport changed from 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN to 2.6: UNKNOWN, 2.7: REQUIRED, 3.0: REQUIRED, 3.1: REQUIRED

It is since 2.4.0.

[nobu (Nobuyoshi Nakada)]

https://github.com/ruby/ruby/pull/5740

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset git|d8189ed23f02dd197453279aeee9be1785337d4f.

---

Return only captured range in MatchData [Bug #18670]

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 2.6: UNKNOWN, 2.7: REQUIRED, 3.0: REQUIRED, 3.1: REQUIRED to 2.6: UNKNOWN, 2.7: REQUIRED, 3.0: REQUIRED, 3.1: DONE

ruby_3_1 1cfc139f6d0cb80d6024b0c416976194929417cf merged revision(s) d8189ed23f02dd197453279aeee9be1785337d4f.