From: "naruse (Yui NARUSE) via ruby-core" <ruby-core@...>
Date: 2023-03-22T02:50:04+00:00
Subject: [ruby-core:112975] [Ruby master Bug#19476] Regexp unexpected partial match

Issue #19476 has been updated by naruse (Yui NARUSE).



Backport changed from 2.7: DONTNEED, 3.0: DONTNEED, 3.1: DONTNEED, 3.2: REQUIRED to 2.7: DONTNEED, 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONE



ruby_3_2 ad6fe84dfa6935bd6e2c3ef3ee36bed4e8627d0b merged revision(s) dddc542e9b61b292d80a96d0d0efbbf58719e3be.



----------------------------------------

Bug #19476: Regexp unexpected partial match

https://bugs.ruby-lang.org/issues/19476#change-102503



* Author: andreccosta (Andr� Costa)

* Status: Closed

* Priority: Normal

* Assignee: make_now_just (Hiroya Fujinami)

* ruby -v: ruby 3.2.1 (2023-02-08 revision 31819e82c8) [arm64-darwin22]

* Backport: 2.7: DONTNEED, 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONE

----------------------------------------

This regular expression does not have the expected match since Ruby 3.2.





Ruby 3.2.1:



```ruby

> RUBY_VERSION

=> "3.2.1"

> "123456789".match(/(\(?\d-?\)?){6,15}/)

=> #<MatchData "123456" 1:"6">

> "123456789".match(/(\d-?\)?){6,}/)

=> #<MatchData "123456" 1:"6">

```



Results in a partial match even though the specified quantifiers should allow matching the whole string.



Ruby 3.1.3:



``` ruby

> RUBY_VERSION

=> "3.1.3"

> "123456789".match(/(\(?\d-?\)?){6,15}/)

=> #<MatchData "123456789" 1:"9">

> "123456789".match(/(\d-?\)?){6,}/)

=> #<MatchData "123456789" 1:"9">

```



Which is the outcome for both patterns in previous versions.







-- 

https://bugs.ruby-lang.org/

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