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| og:image:alt | Description
This PR fixes gh-142006 where email.policy.default would raise a HeaderWriteError when folding certain long address headers.
The Issue:
In _header_value_parser.py, the function _steal_t... |
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gh-142006: Fix HeaderWriteError in email.policy.default caused by extra newline
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Nov 27, 2025
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email.policy.default adds an extra newline char to email address headers and raises HeaderWriteError on stringify
#142006
| https://github.com/python/cpython/issues/142006 |
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| Fix | https://github.com/python/cpython/pull/142008/commits/328bbaccc7324ab11d29e615dac5e2a630ed8b8e |
| pythongh-142006 | https://github.com/python/cpython/issues/142006 |
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awaiting change review
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awaiting changes
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| Dec 6, 2025 | https://github.com/python/cpython/pull/142008#issuecomment-3619320722 |
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Dec 6, 2025
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View reviewed changes
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awaiting merge
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awaiting change review
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needs backport to 3.13
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needs backport to 3.14
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| https://github.com/bitdancer |
| bitdancer | https://github.com/bitdancer |
| 07eff89 | https://github.com/python/cpython/commit/07eff899d8a8ee4c4b1be7cb223fe25687f6216c |
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| Please reload this page | https://github.com/python/cpython/pull/142008 |
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| bedevere-app | https://github.com/apps/bedevere-app |
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awaiting merge
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| Dec 6, 2025 | https://github.com/python/cpython/pull/142008#event-21404156525 |
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Dec 6, 2025
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| bdf4e75 | https://github.com/miss-islington/cpython/commit/bdf4e755752704330d8626175edfc2fac00966ca |
| pythonGH-142008 | https://github.com/python/cpython/pull/142008 |
| 07eff89 | https://github.com/miss-islington/cpython/commit/07eff899d8a8ee4c4b1be7cb223fe25687f6216c |
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Dec 6, 2025
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| 23103a9 | https://github.com/miss-islington/cpython/commit/23103a9ce20c81ad612df86f7644cfe00b5181e3 |
| pythonGH-142008 | https://github.com/python/cpython/pull/142008 |
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| GH-142361 | https://github.com/python/cpython/pull/142361 |
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| bedevere-app | https://github.com/apps/bedevere-app |
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needs backport to 3.14
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| Dec 6, 2025 | https://github.com/python/cpython/pull/142008#event-21404157212 |
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| GH-142362 | https://github.com/python/cpython/pull/142362 |
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needs backport to 3.13
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Dec 6, 2025
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| [3.14] | https://github.com/python/cpython/commit/b188ebeca0710a243571e95e650d6a910c26795e |
| gh-142006 | https://github.com/python/cpython/issues/142006 |
| : Fix HeaderWriteError in email.policy.default caused… | https://github.com/python/cpython/commit/b188ebeca0710a243571e95e650d6a910c26795e |
| b188ebe | https://github.com/python/cpython/commit/b188ebeca0710a243571e95e650d6a910c26795e |
| GH-142008 | https://github.com/python/cpython/pull/142008 |
| #142361 | https://github.com/python/cpython/pull/142361 |
| gh-142006 | https://github.com/python/cpython/issues/142006 |
| GH-142008 | https://github.com/python/cpython/pull/142008 |
| 07eff89 | https://github.com/python/cpython/commit/07eff899d8a8ee4c4b1be7cb223fe25687f6216c |
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Dec 6, 2025
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| GH-142008 | https://github.com/python/cpython/pull/142008 |
| #142362 | https://github.com/python/cpython/pull/142362 |
| gh-142006 | https://github.com/python/cpython/issues/142006 |
| GH-142008 | https://github.com/python/cpython/pull/142008 |
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gaogaotiantian
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email.policy.default adds an extra newline char to email address headers and raises HeaderWriteError on stringify
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