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Maniphest T389623

Parsoid fails to parse [[{}]] single curly brackets inside double rectangular brackets
Open, LowPublicBUG REPORT
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Description

Steps to replicate the issue:

  • visit https://eo.wiktionary.org/wiki/%C5%9Cablono:BUG-T389623?useparsoid=1
  • expected outcome: two thick horizontal lines generated by the template {{hr3}}
  • observed outcome: template NOT called at all, instead raw wikitext is visible
  • click "Redakti" to edit the page, do NOT change anything
  • click "Antaŭrigardo" to preview
  • observed outcome: two thick horizontal lines generated by the template {{hr3}} as expected, but still surprizing in the context

Other information:
The problem vanishes if one switches to the "legacy parser". https://eo.wiktionary.org/wiki/%C5%9Cablono:BUG-T389623?useparsoid=0

Conclusion:
This is a new bug of parsoid.

Details

Related Changes in Gerrit:
SubjectRepoBranchLines +/-
Bump wikimedia/parsoid to 0.21.0-a25mediawiki/vendormaster+876 -594
Fix incorrect broken-wikilink handlingmediawiki/services/parsoidmaster+1 K -715
Fix incorrect broken-wikilink handling (alternative)mediawiki/services/parsoidmaster+567 -412
Customize query in gerrit

Related Objects

Event Timeline

Taylor created this task.Mar 21 2025, 2:29 PM
Restricted Application added a subscriber: Aklapper. · View Herald TranscriptMar 21 2025, 2:29 PM
Taylor updated the task description. (Show Details)Mar 21 2025, 2:30 PM
Taylor updated the task description. (Show Details)Mar 21 2025, 2:35 PM
Taylor mentioned this in T374156: Parsoid trips up on "[[ .. ]]" in parser function args in some cases.Mar 21 2025, 3:03 PM
Taylor updated the task description. (Show Details)Mar 21 2025, 3:09 PM
ssastry added a project: Content-Transform-Team (Work In Progress).Mar 21 2025, 5:17 PM
ssastry moved this task from Backlog to Q3 FY25-26 on the Content-Transform-Team (Work In Progress) board.
MSantos added a project: Parsoid-Read-Views (Wiktionary).Mar 24 2025, 3:00 PM
gerritbot added a comment.Mar 25 2025, 2:36 PM

Change #1130780 had a related patch set uploaded (by Subramanya Sastry; author: Subramanya Sastry):

[mediawiki/services/parsoid@master] Fix incorrect broken-wikilink handling

https://gerrit.wikimedia.org/r/1130780

gerritbot added a project: Patch-For-Review.Mar 25 2025, 2:36 PM
ssastry claimed this task.Mar 25 2025, 2:36 PM
ssastry moved this task from Q3 FY25-26 to Code Review on the Content-Transform-Team (Work In Progress) board.
SLopes-WMF moved this task from Needs Triage to Bugs & Crashers on the Parsoid board.Mar 27 2025, 2:28 PM
gerritbot added a comment.Apr 4 2025, 2:28 AM

Change #1134104 had a related patch set uploaded (by C. Scott Ananian; author: C. Scott Ananian):

[mediawiki/services/parsoid@master] Fix incorrect broken-wikilink handling (alternative)

https://gerrit.wikimedia.org/r/1134104

gerritbot added a comment.Apr 4 2025, 4:16 PM

Change #1134104 merged by jenkins-bot:

[mediawiki/services/parsoid@master] Fix incorrect broken-wikilink handling (alternative)

https://gerrit.wikimedia.org/r/1134104

ABreault-WMF moved this task from Code Review to To Deploy on the Content-Transform-Team (Work In Progress) board.Apr 7 2025, 4:33 PM
gerritbot added a comment.Apr 7 2025, 10:03 PM

Change #1134766 had a related patch set uploaded (by C. Scott Ananian; author: C. Scott Ananian):

[mediawiki/vendor@master] Bump wikimedia/parsoid to 0.21.0-a25

https://gerrit.wikimedia.org/r/1134766

gerritbot added a comment.Apr 7 2025, 10:04 PM

Change #1130780 abandoned by Arlolra:

[mediawiki/services/parsoid@master] Fix incorrect broken-wikilink handling

Reason:

In favour of I511a3aa946d1ddca3f38701e8fd32353e8622bb7

https://gerrit.wikimedia.org/r/1130780

gerritbot added a comment.Apr 7 2025, 10:26 PM

Change #1134766 merged by jenkins-bot:

[mediawiki/vendor@master] Bump wikimedia/parsoid to 0.21.0-a25

https://gerrit.wikimedia.org/r/1134766

Maintenance_bot removed a project: Patch-For-Review.Apr 7 2025, 10:30 PM
ssastry closed this task as Resolved.Apr 10 2025, 1:45 PM
ssastry moved this task from To Deploy to To Verify on the Content-Transform-Team (Work In Progress) board.
Taylor reopened this task as Open.Apr 13 2025, 11:00 PM

Sorry but I have to reopen this one. The fix is partial only. It indeed fixes the original problem

[[{}]]

but after adding a LF

[[{}
]]

it behaves exactly the same way as it did 3 weeks ago. I updated the testpage. Currently it's broken again.

ssastry removed ssastry as the assignee of this task.Apr 17 2025, 8:44 PM
ssastry triaged this task as Medium priority.
ssastry moved this task from To Verify to Backlog on the Content-Transform-Team (Work In Progress) board.
ssastry subscribed.
MSantos added a project: OKR-Work.May 5 2025, 1:12 PM
cscott claimed this task.May 12 2025, 3:21 PM
cscott moved this task from Backlog to In Progress on the Content-Transform-Team (Work In Progress) board.
cscott edited projects, added Content-Transform-Team; removed OKR-Work, Content-Transform-Team (Work In Progress).May 22 2025, 5:32 PM
cscott moved this task from Backlog to Visual Bugs on the Parsoid-Read-Views (Wiktionary) board.
cscott moved this task from Backlog to Later on the Content-Transform-Team board.
MSantos removed cscott as the assignee of this task.Nov 13 2025, 3:25 PM
MSantos lowered the priority of this task from Medium to Low.
MSantos moved this task from Wiktionary to Non-blockers (any wiki) on the Parsoid-Read-Views board.
MSantos edited projects, added Parsoid-Read-Views; removed Parsoid-Read-Views (Wiktionary).
MSantos added a subscriber: cscott.
Taylor added a comment.EditedNov 19 2025, 3:16 PM

I disagree with lowering the priority, and I disagree with move to "non-blockers" given that this is a blocker. Please move into Blockers (any wiki) given that this bug indeed does break a useful module https://www.wikidata.org/wiki/Q120442526.

Taylor moved this task from Non-blockers (any wiki) to Uncategorized on the Parsoid-Read-Views board.Nov 19 2025, 3:19 PM
MSantos moved this task from Uncategorized to Non-blockers (any wiki) on the Parsoid-Read-Views board.Dec 4 2025, 3:36 PM
Taylor added a comment.Dec 25 2025, 2:58 AM

No answer: https://www.mediawiki.org/wiki/User_talk:MSantos_(WMF) Please explain why you move it into non-blockers when it is a bloker, please check https://eo.wiktionary.org/w/index.php?title=Helpo:Sondosiero&useparsoid=0 (GOOD OLD) and https://eo.wiktionary.org/w/index.php?title=Helpo:Sondosiero&useparsoid=1 (BAD NEW).

Taylor added a subscriber: MSantos.Dec 25 2025, 3:01 AM
MSantos moved this task from Non-blockers (any wiki) to Uncategorized on the Parsoid-Read-Views board.Mon, Jan 19, 2:23 PM

@Taylor I apologise for the late response.

This triage action came during one of our team meetings with a framework we have been using to deal with the many bugs/issues related to Parsoid.

This doesn't mean we won't work on this bug, but we are not prioritising it at the current quarter while we are focusing on more pressing issues.

I agree with you that "Non-blocker (any wiki)" might be confusing for this bug since it's clearly a bug in wiktionary. I'll get this back to triage to discuss with the team and let you know.

Thanks for raising your concerns, I really appreciate it.

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