From: "nobu (Nobuyoshi Nakada)" <noreply@...>
Date: 2022-10-28T10:35:49+00:00
Subject: [ruby-core:110532] [Ruby master Bug#19087] String#to_c supports multiple "_"

Issue #19087 has been updated by nobu (Nobuyoshi Nakada).


https://github.com/ruby/ruby/pull/6645

----------------------------------------
Bug #19087: String#to_c supports multiple "_"
https://bugs.ruby-lang.org/issues/19087#change-99858

* Author: andrykonchin (Andrew Konchin)
* Status: Open
* Priority: Normal
* Backport: 2.7: REQUIRED, 3.0: REQUIRED, 3.1: REQUIRED
----------------------------------------
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]
```




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