From: "nobu (Nobuyoshi Nakada)" <noreply@...>
Date: 2021-12-19T11:43:40+00:00
Subject: [ruby-core:106732] [Ruby master Bug#18415] String#rpartition is not sufficiently greedy compared to String#partition

Issue #18415 has been updated by nobu (Nobuyoshi Nakada).

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

I agree that this is intentional and a documentation matter.

----------------------------------------
Bug #18415: String#rpartition is not sufficiently greedy compared to String#partition
https://bugs.ruby-lang.org/issues/18415#change-95418

* Author: jdashton (J Daniel Ashton)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.1.0preview1 (2021-11-09 master 5a3b2e6141) [x86_64-darwin21]
* Backport: 2.6: UNKNOWN, 2.7: REQUIRED, 3.0: REQUIRED
----------------------------------------
``` ruby
3.1.0-preview1 :043 > "...999...".partition /\d+/
 => ["...", "999", "..."] 
3.1.0-preview1 :044 > "...999...".rpartition /\d+/
 => ["...99", "9", "..."] 

```

Using the regex /\d+/, `partition` gives you all consecutive digits. However, `rpartition` gives only the last digit.




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