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fix: preserve $. across borrowed handle scope cleanup - #1935
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Keep the last-read handle active when JVM scope cleanup sees a temporary alias of an anonymous IO glob that still has a live owner. This preserves Perl's `$.` and IO::Handle->input_line_number behavior through wrapper subroutines. Add focused coverage for scalar-backed IO::Handle reads and record the fix in the work-in-progress changelog. Fixes #1933. Generated with [Codex](https://openai.com/codex) Co-Authored-By: Codex <codex@openai.com>
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Summary
$.when JVM scope cleanup sees a borrowed anonymous IO alias while a live owner remains.IO::Handle->getlineandinput_line_numberon scalar-backed handles.Fixes #1933.
Validation
nice -n 19 make— passed on current master55c1bfceplus this fix (candidate76478da8).Pod-Elemental-Transformer-List0.102001 — all 3 files and 16 tests passed on JVM and interpreter with the archived CPAN dependency load order.make check-linksandlychee --offline docs/about/changelog.md— passed.