From: "nagachika (Tomoyuki Chikanaga)" <noreply@...>
Date: 2022-03-12T07:55:55+00:00
Subject: [ruby-core:107857] [Ruby master Bug#18415] String#rpartition is not sufficiently greedy compared to String#partition

Issue #18415 has been updated by nagachika (Tomoyuki Chikanaga).

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

ruby_3_0 4b1cee1431b44e923611c65a8ec5cc61d4025641 merged revision(s) e2ec97c4b823a0b2e0c31e7a6d77b1dcdc0dfada.

----------------------------------------
Bug #18415: String#rpartition is not sufficiently greedy compared to String#partition
https://bugs.ruby-lang.org/issues/18415#change-96796

* Author: jdashton (J Daniel Ashton)
* Status: Closed
* 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: DONE
----------------------------------------
``` 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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