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gh-144133: Add a warning to encodings.punycode documentation - #151812
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StanFromIreland merged 1 commit intoJun 22, 2026
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Documentation build overview1 file changed ± library/codecs.html |
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gpshead
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Jun 20, 2026
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Thanks @StanFromIreland for the PR 🌮🎉.. I'm working now to backport this PR to: 3.13, 3.14, 3.15. |
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GH-151922 is a backport of this pull request to the 3.15 branch. |
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GH-151923 is a backport of this pull request to the 3.14 branch. |
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GH-151924 is a backport of this pull request to the 3.13 branch. |
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pyctrl
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The RFC's reference algorithms have quadratic complexity, as it was designed only designed to handle the intended (limited) input, as described in Section 6.4. While some implementations have avoided this general complexity by introducing caps (e.g. ICU), that's a little too drastic for us to do. Rewriting the algorithms is complicated, and people have tried before, however they capitulate as in practice, with appropriate limits (the DNS label length limit is 63), this should not cause issues.
CC @kjd @malemburg