[ruby-core:115924] [Ruby master Bug#20095] Regex lookahead behaving strangely in 3.3.0

Issue #20095 has been reported by sisyphus_cg (Sisyphus CG).

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Bug #20095: Regex lookahead behaving strangely in 3.3.0
https://bugs.ruby-lang.org/issues/20095

* Author: sisyphus_cg (Sisyphus CG)
* Status: Open
* Priority: Normal
* ruby -v: 3.3.0
* Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
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Multiple regex lookaheads seem to behave strangely in 3.3.0:

```ruby
p "xxx" =~ /(?=.*x)x(?=banana)/ # 2
```

Clearly, the string `xxx` does not contain `banana`, so this regex should never match, but it does.



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