[3.10] gh-135661: Fix parsing start and end tags in HTMLParser according to the HTML5 standard (GH-135930) (GH-136268) by miss-islington · Pull Request #136292 · python/cpython (original) (raw)

…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

This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.Learn more about bidirectional Unicode characters

[ Show hidden characters]({{ revealButtonHref }})