Bug #20095: Regex lookahead behaving strangely in 3.3.0

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: 3.3.0
• Backport: 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONTNEED, 3.3: DONE

[sisyphus_cg (Sisyphus CG)]

Multiple regex lookaheads seem to behave strangely in 3.3.0:

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

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

[dentarg (Patrik Ragnarsson)]

Same as https://bugs.ruby-lang.org/issues/20083?

[naruse (Yui NARUSE)]

• Backport changed from 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN to 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONTNEED, 3.3: REQUIRED

[naruse (Yui NARUSE)]

• Is duplicate of Bug #20083: String#match? behaving inconsistently with Ruby 3.3.0 added

[make_now_just (Hiroya Fujinami)]

It is the exact same as #20207.

[duerst (Martin Dürst)]

• Status changed from Open to Closed

If the duplicate has already be resolved, then let's close this, too.

[naruse (Yui NARUSE)]

• Backport changed from 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONTNEED, 3.3: REQUIRED to 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONTNEED, 3.3: DONE

ruby_3_3 5f3dfa1c273c6fb9eae65ceca633b46f7e30f686.