[pcre-dev] [Bug 2466] New: Case-insensitive Cyrillic YA (Я) not matching lowercase (я) when in lookahead

[admin]

https://bugs.exim.org/show_bug.cgi?id=2466

            Bug ID: 2466
           Summary: Case-insensitive Cyrillic YA (Я) not matching
                    lowercase (я) when in lookahead
           Product: PCRE
           Version: 10.33 (PCRE2)
          Hardware: x86
                OS: Linux
            Status: NEW
          Severity: bug
          Priority: medium
         Component: Code
          Assignee: p...@hermes.cam.ac.uk
          Reporter: p...@requinix.net
                CC: pcre-dev@exim.org

Forwarding from https://bugs.php.net/bug.php?id=78812

With pcre2test:

  re> /Я/i,utf
data> я
 0: \x{44f}
data>
  re> /(?=Я)/i,utf
data> я
No match
data>
  re> /(?=Л)/i,utf
data> л
 0:

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