HTML API: Add support for list elements. by dmsnell · Pull Request #5539 · WordPress/wordpress-develop

dmsnell · 2023-10-20T05:38:33Z

Adds support to the HTML Processor for the following elements, enabling the handling of list elements in HTML:

UL, OL, LI
DT, DL, DD

Previously, the HTML Processor would bail when encountering any of these tags. Now it will properly handle them and their complicated rules.

Add comment at top of HTML Processor indicating new tag support.
Needs a comprehensive suite of tests due to the complicated nature of list rules.
Add docblocks to new tests.

sirreal

I ran the suite from #5794 against this PR and this case fails:

#data
<ul><li><ul></li><li>a</li></ul></li></ul>
#errors
(1,4): expected-doctype-but-got-start-tag
(1,17): unexpected-end-tag
#document
| <html>
| <head>
| <body>
| <ul>
| <li>
| <ul>
| <li>
| "a"

Here's the failure:

 ✘ External html5lib with tests1/case104·-·line·1611
┐
├ HTML <ul><li><ul></li><li>a</li></ul></li></ul>
├ was not processed correctly.
├ Failed asserting that two strings are equal.
┊ ---·Expected
┊ +++·Actual
┊ @@ @@
┊ <ul>\n
┊ <li>\n
┊ <ul>\n
┊ -··········<li>\n
┊ +······<li>\n
┊ '

sirreal · 2023-12-22T17:44:25Z

I'll see if I can figure out the test failure. My previous comment was wrong (the expect/actual were inverted), I've updated it.

sirreal · 2023-12-22T18:21:07Z

I've rebased this.

I pushed a test and a fix for the issue the html5lib tests found. I believe has_element_in_specific_scope had a flipped boolean when it finds a tag in the termination list. Just like if it reaches HTML, the search ends without having found a the tag in scope and the search ends in failure.

This fixes the tests.

sirreal

I'm happy with this, I think it's ready to ship. We've given it a good amount of testing.

Thanks!

github-actions · 2023-12-22T18:34:00Z

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audrasjb

Thanks for the PR. I added a few comments for small enhancements.

audrasjb · 2024-01-09T16:02:45Z

+ $this->is_special( $node->node_name )
+ ) {
+ /*
+ * > If node is in the special category, but is not an address, div,


The > character should probably be removed here

I believe the > is included to indicate it's a quote. These are quoting the HTML standard directly.

Confirming what @sirreal wrote. These are linked to the HTML5 living spec by words to make it easier to search, and the > is attempting to indicate that it's a quote. It also corresponds to every block within the step_in_body() function.
I'm happy to entertain suggestions to improve the linking, but I don't want to make it more difficult for people to cross-reference the spec by removing these quotes. Unfortunately the spec doesn't add anchors to each of these sections so there's no clear link (which is one of the original reasons I added the quotes, beyond the obvious that it puts the intention of the spec at the front in the code).

audrasjb · 2024-01-09T16:04:27Z

+	/**
+ * Verifies that H1 through H6 elements close an open P element.
+ *
+ * @ticket {TICKET_NUMBER}


Ticket number is 60215

From https://github.com/html5lib/html5lib-tests/blob/a9f44960a9fedf265093d22b2aa3c7ca123727b9/tree-construction/webkit01.dat#L468-L482 Co-authored-by: Jon Surrell <sirreal@users.noreply.github.com> Add docblocks to tests, expand comments in class docblock.

dmsnell · 2024-01-10T14:05:48Z

Merged in [57264]

Updates from WordPress/wordpress-develop at 54a09a7ec99c59b8e640bd5aacebfdbf03bb02cc - WordPress/wordpress-develop#5535 Adds support for H1 - H6 elements in the HTML Processor. - WordPress/wordpress-develop#5725 Pause the Tag Processor when reaching the end of the document inside an incomplete syntax element. - Incorporates linting changes from "TODO:" to "todo". - WordPress/wordpress-develop#5762 Handles the "all other tags" rules in IN BODY insertion mode. - WordPress/wordpress-develop#5539 Adds support for list elements in the HTML Processor. This patch adds the blanket exclusion from the HTML API compatability layer after they were removed and started blocking updates from Core. The PHP files in the compatability layer are merged and maintained in the Core repo and all changes or updates need to happen first in Core and then be brought over to Gutenberg as built files. From Gutenberg's perspective they are no different than NPM packages. Co-authored-by: Anton Vlasenko <43744263+anton-vlasenko@users.noreply.github.com> Co-authored-by: Bernie Reiter <96308+ockham@users.noreply.github.com>

mdawaffe · 2024-01-16T05:54:08Z

 * - Heading elements: H1, H2, H3, H4, H5, H6, HGROUP.
 * - Links: A.
- * - Lists: DL.
+ * - Lists: DD, DL, DT, LI, OL, LI.


This looks like it should this be UL.
- * - Lists: DD, DL, DT, LI, OL, LI.+ * - Lists: DD, DL, DT, LI, OL, UL.

Thank you! Will fix this.

Updates from WordPress/wordpress-develop at 54a09a7ec99c59b8e640bd5aacebfdbf03bb02cc - WordPress/wordpress-develop#5535 Adds support for H1 - H6 elements in the HTML Processor. - WordPress/wordpress-develop#5725 Pause the Tag Processor when reaching the end of the document inside an incomplete syntax element. - Incorporates linting changes from "TODO:" to "todo". - WordPress/wordpress-develop#5762 Handles the "all other tags" rules in IN BODY insertion mode. - WordPress/wordpress-develop#5539 Adds support for list elements in the HTML Processor. This patch adds the blanket exclusion from the HTML API compatability layer after they were removed and started blocking updates from Core. The PHP files in the compatability layer are merged and maintained in the Core repo and all changes or updates need to happen first in Core and then be brought over to Gutenberg as built files. From Gutenberg's perspective they are no different than NPM packages. Co-authored-by: Anton Vlasenko <43744263+anton-vlasenko@users.noreply.github.com> Co-authored-by: Bernie Reiter <96308+ockham@users.noreply.github.com>

Updates from WordPress/wordpress-develop at f4dda54df785d0a6957dedda3648f7fab58b829f - Coding style changes. - WordPress/wordpress-develop#5762 Adds support for the "any other tag" sections in the HTML Processor. - WordPress/wordpress-develop#5539 Adds support for list elements in the HTML Processor. - WordPress/wordpress-develop#5897 Adds support for HR elements in the HTML Processor. - WordPress/wordpress-develop#5895 Adds support for the AREA, BR, EMBED, KEYGEN, and WBR elements in the HTML Processor. - WordPress/wordpress-develop#5903 Adds support for the PRE and LISTING elements in the HTML Processor. - WordPress/wordpress-develop#5913 Updates "all other tags" support in HTML Processor and updates list of void elements. - WordPress/wordpress-develop#5906 Adds support for the PARAM, SOURCE, and TRACK elements in the HTML Processor. - WordPress/wordpress-develop#5683 Provides mechanism to scan all tokens in an HTML document in the Tag Processor. The PHP files in the compatability layer are merged and maintained in the Core repo and all changes or updates need to happen first in Core and then be brought over to Gutenberg as built files. Co-authored-by: Sergey Biryukov <sergeybiryukov.ru@gmail.com> Co-authored-by: Jon Surrell <sirreal@users.noreply.github.com>

See WordPress#5539 (comment)

Updates from WordPress/wordpress-develop at f4dda54df785d0a6957dedda3648f7fab58b829f - Coding style changes. - WordPress/wordpress-develop#5762 Adds support for the "any other tag" sections in the HTML Processor. - WordPress/wordpress-develop#5539 Adds support for list elements in the HTML Processor. - WordPress/wordpress-develop#5897 Adds support for HR elements in the HTML Processor. - WordPress/wordpress-develop#5895 Adds support for the AREA, BR, EMBED, KEYGEN, and WBR elements in the HTML Processor. - WordPress/wordpress-develop#5903 Adds support for the PRE and LISTING elements in the HTML Processor. - WordPress/wordpress-develop#5913 Updates "all other tags" support in HTML Processor and updates list of void elements. - WordPress/wordpress-develop#5906 Adds support for the PARAM, SOURCE, and TRACK elements in the HTML Processor. - WordPress/wordpress-develop#5683 Provides mechanism to scan all tokens in an HTML document in the Tag Processor. The PHP files in the compatability layer are merged and maintained in the Core repo and all changes or updates need to happen first in Core and then be brought over to Gutenberg as built files. Co-authored-by: Sergey Biryukov <sergeybiryukov.ru@gmail.com> Co-authored-by: Jon Surrell <sirreal@users.noreply.github.com>

Updates from WordPress/wordpress-develop at f4dda54df785d0a6957dedda3648f7fab58b829f - Coding style changes. - WordPress/wordpress-develop#5762 Adds support for the "any other tag" sections in the HTML Processor. - WordPress/wordpress-develop#5539 Adds support for list elements in the HTML Processor. - WordPress/wordpress-develop#5897 Adds support for HR elements in the HTML Processor. - WordPress/wordpress-develop#5895 Adds support for the AREA, BR, EMBED, KEYGEN, and WBR elements in the HTML Processor. - WordPress/wordpress-develop#5903 Adds support for the PRE and LISTING elements in the HTML Processor. - WordPress/wordpress-develop#5913 Updates "all other tags" support in HTML Processor and updates list of void elements. - WordPress/wordpress-develop#5906 Adds support for the PARAM, SOURCE, and TRACK elements in the HTML Processor. - WordPress/wordpress-develop#5683 Provides mechanism to scan all tokens in an HTML document in the Tag Processor. - WordPress/wordpress-develop#5907 Adds support for the INPUT element in the HTML Processor The PHP files in the compatability layer are merged and maintained in the Core repo and all changes or updates need to happen first in Core and then be brought over to Gutenberg as built files. Co-authored-by: Sergey Biryukov <sergeybiryukov.ru@gmail.com> Co-authored-by: Jon Surrell <sirreal@users.noreply.github.com>

Updates from WordPress/wordpress-develop: - From: WordPress/wordpress-develop@54a09a7 - To: WordPress/wordpress-develop@7a71339 - Coding style changes. - WordPress/wordpress-develop#5762 Adds support for the "any other tag" sections in the HTML Processor. - WordPress/wordpress-develop#5539 Adds support for list elements in the HTML Processor. - WordPress/wordpress-develop#5897 Adds support for HR elements in the HTML Processor. - WordPress/wordpress-develop#5895 Adds support for the AREA, BR, EMBED, KEYGEN, and WBR elements in the HTML Processor. - WordPress/wordpress-develop#5903 Adds support for the PRE and LISTING elements in the HTML Processor. - WordPress/wordpress-develop#5913 Updates "all other tags" support in HTML Processor and updates list of void elements. - WordPress/wordpress-develop#5906 Adds support for the PARAM, SOURCE, and TRACK elements in the HTML Processor. - WordPress/wordpress-develop#5907 Adds support for the INPUT element in the HTML Processor - WordPress/wordpress-develop#5683 Provides mechanism to scan all tokens in an HTML document in the Tag Processor. - WordPress/wordpress-develop#5976 Avoids splitting text nodes on "<" character. - WordPress/wordpress-develop#5992 Only recognize true CDATA-lookalike nodes. - WordPress/wordpress-develop#5975 Prevent void tag nesting when calling `next_token()` - WordPress/wordpress-develop#6021 Reset parser state after seeking. - https://core.trac.wordpress.org/changeset/57528 Fix typo in setting token flag. - WordPress/wordpress-develop#6041 Ensure consecutive text is all joined into one text node. The PHP files in the compatability layer are merged and maintained in the Core repo and all changes or updates need to happen first in Core and then be brought over to Gutenberg as built files. Co-authored-by: sergeybiryukov <sergeybiryukov@git.wordpress.org> Co-authored-by: sirreal <jonsurrell@git.wordpress.org> Co-authored-by: dmsnell <dmsnell@git.wordpress.org>

dmsnell commented Oct 20, 2023
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Comment threadsrc/wp-includes/html-api/class-wp-html-open-elements.php Outdated

dmsnell force-pushed the html-api/add-support-for-lists branch 2 times, most recently from 9a7f64e to 53e3df3Compare December 13, 2023 18:42

dmsnell marked this pull request as ready for review December 13, 2023 18:44

dmsnell changed the title ~~WIP: HTML API: Add support for list elements.~~HTML API: Add support for list elements.Dec 13, 2023

dmsnell mentioned this pull request Dec 19, 2023
HTML API: Add explicit handling or failure for all tags #5762
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sirreal reviewed Dec 20, 2023
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sirreal force-pushed the html-api/add-support-for-lists branch from 8ecc099 to c73d272Compare December 22, 2023 18:19

sirreal approved these changes Dec 22, 2023
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dmsnell force-pushed the html-api/add-support-for-lists branch 3 times, most recently from b25c823 to 9e9085eCompare January 9, 2024 15:10

audrasjb reviewed Jan 9, 2024
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dmsnell force-pushed the html-api/add-support-for-lists branch from 9e9085e to 38cb836Compare January 9, 2024 21:58

dmsnell force-pushed the html-api/add-support-for-lists branch from 7537300 to 5adee8aCompare January 10, 2024 13:29

dmsnell closed this Jan 10, 2024

dmsnell deleted the html-api/add-support-for-lists branch January 10, 2024 14:05

dmsnell mentioned this pull request Jan 12, 2024
HTML API: Backport updates from Core WordPress/gutenberg#57022
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mdawaffe reviewed Jan 16, 2024
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dmsnell mentioned this pull request Jan 23, 2024
HTML API: Backport updates from Core WordPress/gutenberg#58107
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sirreal added a commit to sirreal/wordpress-develop that referenced this pull request Jan 23, 2024
Fix repeated LI supported element (UL)
c651133
See WordPress#5539 (comment)

sirreal mentioned this pull request Jan 23, 2024
HTML API: Handle input tags #5907
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Test using WordPress Playground

Some things to be aware of

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