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[3.14] Correctly fold unknown-8bit originating from encoded words. (GH-142517)#143146
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…-142517)The unknown-8bit trick was designed to deal with unknown bytes in anASCII message, and it works fine for that. However, I also tried toextend it to handle bytes that can't be decoded using the charsetspecified in an encoded word, and there it fails because there can beother non-ASCII characters that were *successfully* decoded. The fix issimple: do the unknown-8bit encoding using the utf-8 codec. This isespecially appropriate since anyone trying to do recovery on an unknownbyte string will probably attempt utf-8 first.(cherry picked from commit1e17ccd)Co-authored-by: R. David Murray <rdmurray@bitdance.com>
Misc/NEWS.d/next/Library/2025-12-10-10-00-06.gh-issue-142517.fG4hbe.rst OutdatedShow resolvedHide resolved
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…G4hbe.rstCo-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
6809811 intopython:3.14 47 checks passed
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The unknown-8bit trick was designed to deal with unknown bytes in an
ASCII message, and it works fine for that. However, I also tried to
extend it to handle bytes that can't be decoded using the charset
specified in an encoded word, and there it fails because there can be
other non-ASCII characters that weresuccessfully decoded. The fix is
simple: do the unknown-8bit encoding using the utf-8 codec. This is
especially appropriate since anyone trying to do recovery on an unknown
byte string will probably attempt utf-8 first.
(cherry picked from commit1e17ccd)
Co-authored-by: R. David Murrayrdmurray@bitdance.com