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[pull] main from python:main#777

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pull[bot] merged 7 commits intotj-python:mainfrom
python:main
Feb 19, 2026
Merged

[pull] main from python:main#777
pull[bot] merged 7 commits intotj-python:mainfrom
python:main

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@pull pull bot commented Feb 19, 2026

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Created by pull[bot] (v2.0.0-alpha.4)

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📚 Documentation preview 📚: https://cpython-previews--777.org.readthedocs.build/

chris-eibl and others added 7 commits February 19, 2026 18:10
)

The fix for gh-92081 (gh-92281) was unfortunately flawed, and broke whitespace handling for encoded word patterns that had previously been working correctly but had no corresponding tests, unfortunately in a way that made the resulting headers not RFC compliant, in such a way that Yahoo started rejecting the resulting emails.  This fix was released in 3.14 alpha 1, 3.13 beta 2 and 3.12.5.   This PR fixes the original problem in a way that does not break anything, and in fact fixes a small pre-existing bug (a spurious whitespace after the ':' of the header label if the header value is immediately wrapped on to the next line).  (RDM)

Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Co-authored-by: R. David Murray <rdmurray@bitdance.com>
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
Document also the dataclasses.field() metadata change.
"<<" has lower precedence than "-".
@pull pull bot locked and limited conversation to collaborators Feb 19, 2026
@pull pull bot added the ⤵️ pull label Feb 19, 2026
@pull pull bot merged commit 4141f0a into tj-python:main Feb 19, 2026
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6 participants