Issue #19532 has been reported by Eregon (Benoit Daloze).
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Bug #19532: Handling of 6-byte codepoints in left_adjust_char_head in CESU-8 encoding is
broken
https://bugs.ruby-lang.org/issues/19532
* Author: Eregon (Benoit Daloze)
* Status: Open
* Priority: Normal
* Backport: 2.7: UNKNOWN, 3.0: REQUIRED, 3.1: REQUIRED, 3.2: REQUIRED
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Fix in
https://github.com/ruby/ruby/pull/7510
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