Issue #19087 has been updated by nagachika (Tomoyuki Chikanaga). Backport changed from 2.7: REQUIRED, 3.0: REQUIRED, 3.1: REQUIRED to 2.7: REQUIRED, 3.0: REQUIRED, 3.1: DONTNEED I agree that the new behavior is consistent and preferable, but I don't think it should be fixed on the stable branches. If there are any troubles on the real world applications with this issue, please let me know. ---------------------------------------- Bug #19087: String#to_c supports multiple "_" https://bugs.ruby-lang.org/issues/19087#change-100537 * Author: andrykonchin (Andrew Konchin) * Status: Closed * Priority: Normal * Backport: 2.7: REQUIRED, 3.0: REQUIRED, 3.1: DONTNEED ---------------------------------------- I've noticed a minor inconsistent behaviour of `String#to_c` method. It does not treat a sequence of `_` character as an end of meaningful characters: ```ruby "123".to_c # => (123+0i) "12_3".to_c # => (123+0i) "12__3".to_c # => (123+0i) "12___3".to_c # => (123+0i) ``` Similar methods `#to_i` and `#to_r` treat multiple `_` in a different way - they just ignore characters after it: ```ruby "12__3".to_i # => 12 "12__3".to_r # => (12/1) ``` I would expect `#to_c` to behave similarly. --- ``` $ ruby -v ruby 3.1.2p20 (2022-04-12 revision 4491bb740a) [x86_64-darwin21] ``` -- https://bugs.ruby-lang.org/