On https://en.wikipedia.org/w/index.php?title=User:ESanders_(WMF)/sandbox&oldid=877762681, the bottom heading ("Heading 2") has a section id of 2 in PHP (see section edit URL), but in Parsoid it has a section ID of 5 (https://en.wikipedia.org/api/rest_v1/page/html/User%3AESanders_(WMF)%2Fsandbox?redirect=false)
The DOM spec claims "The data-mw-section-id attribute will either be "0" or greater and correspond exactly to a PHP section ID (as used for action=edit for example)"
| Subject | Repo | Branch | Lines +/- | |
|---|---|---|---|---|
| PHP section numbers are assigned during tokenization | mediawiki/services/parsoid | master | +339 -48 |
Change 483490 had a related patch set uploaded (by C. Scott Ananian; owner: C. Scott Ananian):
[mediawiki/services/parsoid@master] WIP DRAFT HACK HACK HACK: transcluded sections don't get PHP section numbers
Change 483490 merged by jenkins-bot:
[mediawiki/services/parsoid@master] PHP section numbers are assigned during tokenization
Mentioned in SAL (#wikimedia-operations) [2019-02-11T21:32:55Z] <arlolra> Updated Parsoid to rGPARb4b9603ed153 (T208901, T215537, T213468, T215638)
https://en.wikipedia.org/api/rest_v1/page/html/User:ESanders_(WMF)%2Fsandbox/877762681 now has,
<section data-mw-section-id="0" id="mwAQ"><p id="mwAg">Lede</p>
</section><section data-mw-section-id="1" id="mwAw"><h2 id="Heading_1">Heading 1</h2>
<p id="mwBA">Section 1</p>
</section><section data-mw-section-id="-1" id="mwBQ"><h2 about="#mwt1" typeof="mw:Transclusion" id="Transcluded_section" data-mw='{"parts":[{"template":{"target":{"wt":":User:ESanders (WMF)/sandbox/section","href":"./User:ESanders_(WMF)/sandbox/section"},"params":{},"i":0}}]}'>Transcluded section</h2><span about="#mwt1">
</span><p about="#mwt1">Content</p>
</section><section data-mw-section-id="-1" id="mwBg"><h2 about="#mwt2" typeof="mw:Transclusion" id="Transcluded_section_2" data-mw='{"parts":[{"template":{"target":{"wt":":User:ESanders (WMF)/sandbox/section","href":"./User:ESanders_(WMF)/sandbox/section"},"params":{},"i":0}}]}'>Transcluded section</h2><span about="#mwt2">
</span><p about="#mwt2">Content</p>
</section><section data-mw-section-id="-1" id="mwBw"><h2 about="#mwt3" typeof="mw:Transclusion" id="Transcluded_section_3" data-mw='{"parts":[{"template":{"target":{"wt":":User:ESanders (WMF)/sandbox/section","href":"./User:ESanders_(WMF)/sandbox/section"},"params":{},"i":0}}]}'>Transcluded section</h2><span about="#mwt3">
</span><p about="#mwt3">Content</p>
</section><section data-mw-section-id="2" id="mwCA"><h2 id="Heading_2">Heading 2</h2>
<p id="mwCQ">Section 2</p></section>Although note T215628: Make Parsoid and PHP edit-section numbering consistent when <noinclude> and <includeonly> are in use, although I doubt anyone will ever encounter this in the wild.