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Tex math rendering issues (fixed by purging)
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Description

Author: basile-vw

Description:
notice how it reads "aligndat" in stead of "alignat", but this isn't the case when editing the page.

Parsing mathmatical functions in Tex fails sometimes for an unknown reason.

I checked on different computers and browsers and I asked other people on different location to check this for me, all got the same errors.

Namely: Parsing failed(unknown function "\begin"):...

At first glance it looked like a syntax error, but when editing the page the syntax looked perfectly fine.

Weirdly enough, not all pages are affected and just re-saving the pages in question solved the issue, but the problem persists on many other pages.

e.g.: https://no.wikipedia.org/wiki/Line%C3%A6rt_ligningssystem

https://nn.wikipedia.org/wiki/Line%C3%A6rt_likningssystem
https://gl.wikipedia.org/wiki/Sistema_de_ecuaci%C3%B3ns_lineais

I also found similar problems in wikibooks.


Version: unspecified
Severity: normal

Attached:

renderproblem_nl_wikipedia.png (1×1 px, 180 KB)

Details

Reference
bz61808

Event Timeline

bzimport raised the priority of this task from to Needs Triage.Nov 22 2014, 3:04 AM
bzimport added a project: Math.
bzimport set Reference to bz61808.
bzimport added a subscriber: Unknown Object (MLST).

basile-vw wrote:

Yes, sorry I forgot to specify where the screenshot came from.

The page now renders correctly, but it was one of the pages I re-saved.

Did you check the other links I mentioned, do those render correctly on your end?
If not, I can hardly purge all pages where this problem persists, can I? Is there no global solution?

Kind Regards,
Oculum

basile-vw wrote:

I use PNG most of the time because its faster.
I've just tested with mathJax and it renders correctly.

But PNG still gives me errors on e.g. https://nn.wikipedia.org/wiki/Line%C3%A6rt_likningssystem

Anyway, like I mentioned in the first post, it seems like I'm not the only one experiencing this problem and as far as I know it's impossible to change the render mode if you don't posses a wiki-account, what can other people do to fix this?

I wonder if these problems are still the aftermath of bug 60997 - if purging does not help it is worth to investigate, so I recommend to purge first by reloading the page with "?action=purge" attached to the web address.

basile-vw wrote:

Ok, purging seems to work on all occasions, I'll guess I'll do this everywhere I come across this problem, there are however a lot of pages in a lot of languages where I find similar errors, so it might take a while before everything is solved.

Anyway thanks for your time.

Kind regards
Oculum