[3.12] gh-135661: Fix parsing start and end tags in HTMLParser according to the HTML5 standard (GH-135930) by serhiy-storchaka · Pull Request #136268 · python/cpython (original) (raw)
…according to the HTML5 standard (pythonGH-135930)
Whitespaces no longer accepted between
</and the tag name. E.g.</ script>does not end the script section.Vertical tabulation (
\v) and non-ASCII whitespaces no longer recognized as whitespaces. The only whitespaces are\t\n\r\f.Null character (U+0000) no longer ends the tag name.
Attributes and slashes after the tag name in end tags are now ignored, instead of terminating after the first
>in quoted attribute value. E.g.</script/foo=">"/>.Multiple slashes and whitespaces between the last attribute and closing
>are now ignored in both start and end tags. E.g.<a foo=bar/ //>.Multiple
=between attribute name and value are no longer collapsed. E.g.<a foo==bar>produces attribute "foo" with value "=bar".Whitespaces between the
=separator and attribute name or value are no longer ignored. E.g.<a foo =bar>produces two attributes "foo" and "=bar", both with value None;<a foo= bar>produces two attributes: "foo" with value "" and "bar" with value None.Fix data loss after unclosed script or style tag (pythongh-86155).
Also backport test.support.subTests() (pythongh-135120).
(cherry picked from commit 0243f97)
Co-authored-by: Serhiy Storchaka storchaka@gmail.com Co-authored-by: Ezio Melotti ezio.melotti@gmail.com Co-authored-by: Waylan Limberg waylan.limberg@icloud.com
This was referenced
Jul 4, 2025
miss-islington pushed a commit to miss-islington/cpython that referenced this pull request
…according to the HTML5 standard (pythonGH-135930) (pythonGH-136268)
Whitespaces no longer accepted between
</and the tag name. E.g.</ script>does not end the script section.Vertical tabulation (
\v) and non-ASCII whitespaces no longer recognized as whitespaces. The only whitespaces are\t\n\r\f.Null character (U+0000) no longer ends the tag name.
Attributes and slashes after the tag name in end tags are now ignored, instead of terminating after the first
>in quoted attribute value. E.g.</script/foo=">"/>.Multiple slashes and whitespaces between the last attribute and closing
>are now ignored in both start and end tags. E.g.<a foo=bar/ //>.Multiple
=between attribute name and value are no longer collapsed. E.g.<a foo==bar>produces attribute "foo" with value "=bar".Whitespaces between the
=separator and attribute name or value are no longer ignored. E.g.<a foo =bar>produces two attributes "foo" and "=bar", both with value None;<a foo= bar>produces two attributes: "foo" with value "" and "bar" with value None.Fix data loss after unclosed script or style tag (pythongh-86155).
Also backport test.support.subTests() (pythongh-135120).
(cherry picked from commit 0243f97) (cherry picked from commit c555f88)
Co-authored-by: Serhiy Storchaka storchaka@gmail.com Co-authored-by: Ezio Melotti ezio.melotti@gmail.com Co-authored-by: Waylan Limberg waylan.limberg@icloud.com
miss-islington pushed a commit to miss-islington/cpython that referenced this pull request
…according to the HTML5 standard (pythonGH-135930) (pythonGH-136268)
Whitespaces no longer accepted between
</and the tag name. E.g.</ script>does not end the script section.Vertical tabulation (
\v) and non-ASCII whitespaces no longer recognized as whitespaces. The only whitespaces are\t\n\r\f.Null character (U+0000) no longer ends the tag name.
Attributes and slashes after the tag name in end tags are now ignored, instead of terminating after the first
>in quoted attribute value. E.g.</script/foo=">"/>.Multiple slashes and whitespaces between the last attribute and closing
>are now ignored in both start and end tags. E.g.<a foo=bar/ //>.Multiple
=between attribute name and value are no longer collapsed. E.g.<a foo==bar>produces attribute "foo" with value "=bar".Whitespaces between the
=separator and attribute name or value are no longer ignored. E.g.<a foo =bar>produces two attributes "foo" and "=bar", both with value None;<a foo= bar>produces two attributes: "foo" with value "" and "bar" with value None.Fix data loss after unclosed script or style tag (pythongh-86155).
Also backport test.support.subTests() (pythongh-135120).
(cherry picked from commit 0243f97) (cherry picked from commit c555f88)
Co-authored-by: Serhiy Storchaka storchaka@gmail.com Co-authored-by: Ezio Melotti ezio.melotti@gmail.com Co-authored-by: Waylan Limberg waylan.limberg@icloud.com
miss-islington pushed a commit to miss-islington/cpython that referenced this pull request
…according to the HTML5 standard (pythonGH-135930) (pythonGH-136268)
Whitespaces no longer accepted between
</and the tag name. E.g.</ script>does not end the script section.Vertical tabulation (
\v) and non-ASCII whitespaces no longer recognized as whitespaces. The only whitespaces are\t\n\r\f.Null character (U+0000) no longer ends the tag name.
Attributes and slashes after the tag name in end tags are now ignored, instead of terminating after the first
>in quoted attribute value. E.g.</script/foo=">"/>.Multiple slashes and whitespaces between the last attribute and closing
>are now ignored in both start and end tags. E.g.<a foo=bar/ //>.Multiple
=between attribute name and value are no longer collapsed. E.g.<a foo==bar>produces attribute "foo" with value "=bar".Whitespaces between the
=separator and attribute name or value are no longer ignored. E.g.<a foo =bar>produces two attributes "foo" and "=bar", both with value None;<a foo= bar>produces two attributes: "foo" with value "" and "bar" with value None.Fix data loss after unclosed script or style tag (pythongh-86155).
Also backport test.support.subTests() (pythongh-135120).
(cherry picked from commit 0243f97) (cherry picked from commit c555f88)
Co-authored-by: Serhiy Storchaka storchaka@gmail.com Co-authored-by: Ezio Melotti ezio.melotti@gmail.com Co-authored-by: Waylan Limberg waylan.limberg@icloud.com
ambv pushed a commit that referenced this pull request
…ing to the HTML5 standard (GH-135930) (GH-136268) (#136291)
Whitespaces no longer accepted between
</and the tag name. E.g.</ script>does not end the script section.Vertical tabulation (
\v) and non-ASCII whitespaces no longer recognized as whitespaces. The only whitespaces are\t\n\r\f.Null character (U+0000) no longer ends the tag name.
Attributes and slashes after the tag name in end tags are now ignored, instead of terminating after the first
>in quoted attribute value. E.g.</script/foo=">"/>.Multiple slashes and whitespaces between the last attribute and closing
>are now ignored in both start and end tags. E.g.<a foo=bar/ //>.Multiple
=between attribute name and value are no longer collapsed. E.g.<a foo==bar>produces attribute "foo" with value "=bar".Whitespaces between the
=separator and attribute name or value are no longer ignored. E.g.<a foo =bar>produces two attributes "foo" and "=bar", both with value None;<a foo= bar>produces two attributes: "foo" with value "" and "bar" with value None.Fix data loss after unclosed script or style tag (gh-86155).
Also backport test.support.subTests() (gh-135120).
(cherry picked from commit 0243f97) (cherry picked from commit c555f88)
Co-authored-by: Serhiy Storchaka storchaka@gmail.com Co-authored-by: Ezio Melotti ezio.melotti@gmail.com Co-authored-by: Waylan Limberg waylan.limberg@icloud.com
ambv pushed a commit that referenced this pull request
…ing to the HTML5 standard (GH-135930) (GH-136268) (#136292)
Whitespaces no longer accepted between
</and the tag name. E.g.</ script>does not end the script section.Vertical tabulation (
\v) and non-ASCII whitespaces no longer recognized as whitespaces. The only whitespaces are\t\n\r\f.Null character (U+0000) no longer ends the tag name.
Attributes and slashes after the tag name in end tags are now ignored, instead of terminating after the first
>in quoted attribute value. E.g.</script/foo=">"/>.Multiple slashes and whitespaces between the last attribute and closing
>are now ignored in both start and end tags. E.g.<a foo=bar/ //>.Multiple
=between attribute name and value are no longer collapsed. E.g.<a foo==bar>produces attribute "foo" with value "=bar".Whitespaces between the
=separator and attribute name or value are no longer ignored. E.g.<a foo =bar>produces two attributes "foo" and "=bar", both with value None;<a foo= bar>produces two attributes: "foo" with value "" and "bar" with value None.Fix data loss after unclosed script or style tag (gh-86155).
Also backport test.support.subTests() (gh-135120).
(cherry picked from commit 0243f97) (cherry picked from commit c555f88)
Co-authored-by: Serhiy Storchaka storchaka@gmail.com Co-authored-by: Ezio Melotti ezio.melotti@gmail.com Co-authored-by: Waylan Limberg waylan.limberg@icloud.com
ambv pushed a commit that referenced this pull request
…ng to the HTML5 standard (GH-135930) (GH-136268) (#136293)
Whitespaces no longer accepted between
</and the tag name. E.g.</ script>does not end the script section.Vertical tabulation (
\v) and non-ASCII whitespaces no longer recognized as whitespaces. The only whitespaces are\t\n\r\f.Null character (U+0000) no longer ends the tag name.
Attributes and slashes after the tag name in end tags are now ignored, instead of terminating after the first
>in quoted attribute value. E.g.</script/foo=">"/>.Multiple slashes and whitespaces between the last attribute and closing
>are now ignored in both start and end tags. E.g.<a foo=bar/ //>.Multiple
=between attribute name and value are no longer collapsed. E.g.<a foo==bar>produces attribute "foo" with value "=bar".Whitespaces between the
=separator and attribute name or value are no longer ignored. E.g.<a foo =bar>produces two attributes "foo" and "=bar", both with value None;<a foo= bar>produces two attributes: "foo" with value "" and "bar" with value None.Fix data loss after unclosed script or style tag (gh-86155).
Also backport test.support.subTests() (gh-135120).
(cherry picked from commit 0243f97) (cherry picked from commit c555f88)
Co-authored-by: Serhiy Storchaka storchaka@gmail.com Co-authored-by: Ezio Melotti ezio.melotti@gmail.com Co-authored-by: Waylan Limberg waylan.limberg@icloud.com
gentoo-bot pushed a commit to gentoo/cpython that referenced this pull request
…ccording to the HTML5 standard (pythonGH-135930) (pythonGH-136268) (python#136293)
Whitespaces no longer accepted between
</and the tag name. E.g.</ script>does not end the script section.Vertical tabulation (
\v) and non-ASCII whitespaces no longer recognized as whitespaces. The only whitespaces are\t\n\r\f.Null character (U+0000) no longer ends the tag name.
Attributes and slashes after the tag name in end tags are now ignored, instead of terminating after the first
>in quoted attribute value. E.g.</script/foo=">"/>.Multiple slashes and whitespaces between the last attribute and closing
>are now ignored in both start and end tags. E.g.<a foo=bar/ //>.Multiple
=between attribute name and value are no longer collapsed. E.g.<a foo==bar>produces attribute "foo" with value "=bar".Whitespaces between the
=separator and attribute name or value are no longer ignored. E.g.<a foo =bar>produces two attributes "foo" and "=bar", both with value None;<a foo= bar>produces two attributes: "foo" with value "" and "bar" with value None.Fix data loss after unclosed script or style tag (pythongh-86155).
Also backport test.support.subTests() (pythongh-135120).
(cherry picked from commit 0243f97) (cherry picked from commit c555f88)
Co-authored-by: Serhiy Storchaka storchaka@gmail.com Co-authored-by: Ezio Melotti ezio.melotti@gmail.com Co-authored-by: Waylan Limberg waylan.limberg@icloud.com Signed-off-by: Michał Górny mgorny@gentoo.org
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