(In reply to Sam Reed (reedy) from comment #0)

It seems somewhat silly that Collection is default off, and then is opt in.
zh is known to be buggy with the PediaPress backend (at least), so there
should be some sites not included...

Is there any "good" reason we shouldn't enable it by default?

No. The current situation is just a relic of the past. Almost 6 years later, it should be enabled everywhere and bugs dealt with.

I'm not sure it makes sense to disable in some languages just because there are bugs in PDF, or instance fawiki has it enabled though it's completely broken; but if we go that way, then there is bug 28206.

It would seem this is pretty much doable:

[15:53:14] <Reedy> cscott: Any reason (on your part at least), why we can't/shouldn't enable collection (almost) everywhere?
[15:53:54] <cscott> Reedy: where is it not enabled?
[15:54:30] <cscott> Reedy: it relies on parsoid, so results on zhwiki or other languageconverter wikis will be disappointing right now.
[15:54:30] <Reedy> cscott: On a lot of wikis. It's enabled on tens at most
[15:54:49] <Reedy> cscott: Ok, so we can presumably enable by default, and then just disable where necessary
[15:54:59] <Reedy> Rather than the current disabled by default
[15:55:07] <cscott> language converter is the only issue. and it won't cause a crash, just unreadable (unconverted) output.
[15:55:43] <Reedy> cscott: Having bugs filed as a TODO list isn't the worst idea.. If it's majorly broken, we can disable it. I just can't imagine for the majority of wikis it won't work
[15:55:51] <Reedy> Nemo_bis: ^^
[15:56:15] <cscott> Reedy: oh, the other issue is that it relies on the parsoid configuration for Extension:Parsoid -- is that enabled everywhere. (Note that this isn't parsoid, it's the cache-invalidation extension for parsoid)
[15:56:24] <Reedy> So that just mans 'gan','iu','kk','ku','shi','sr','tg','uz','zh',
[15:56:57] <Reedy> https://bugzilla.wikimedia.org/show_bug.cgi?id=71416
[15:57:02] <cscott> Reedy: https://www.mediawiki.org/wiki/Writing_systems has the complete list i think
[15:57:28] <Reedy> This is where it'd be useful if InitialiseSettings could work on langcodes :)
[15:58:00] <cscott> fwiw, getting language converter to play nicely with parsoid is on my to-do list for this quarter
[15:58:26] <Reedy> You'll make a lot of people very happy :)

FWIW, fawiki works great with the new OCG PDF backend.

Change 165490 had a related patch set uploaded by Reedy:
Enable Collection by default on all wikis

https://gerrit.wikimedia.org/r/165490

reedy@tin:/srv/mediawiki-staging$ grep -e '^\(gan\|iu\|kk\|ku\|shi\|sr\|tg\|uz\|zh\)' all.dblist
ganwiki
iuwiki
iuwiktionary
kkwiki
kkwikibooks
kkwikiquote
kkwiktionary
kuwiki
kuwikibooks
kuwikiquote
kuwiktionary
srnwiki
srwiki
srwikibooks
srwikinews
srwikiquote
srwikisource
srwiktionary
tgwiki
tgwikibooks
tgwiktionary
uzwiki
uzwikibooks
uzwikiquote
uzwiktionary
zh_classicalwiki
zh_min_nanwiki
zh_min_nanwikibooks
zh_min_nanwikiquote
zh_min_nanwikisource
zh_min_nanwiktionary
zh_yuewiki
zhwiki
zhwikibooks
zhwikinews
zhwikiquote
zhwikisource
zhwikivoyage
zhwiktionary
reedy@tin:/srv/mediawiki-staging$

What's the status of this? Can this be done in the near future or should we continue to enable it on specific wikis whenever it is requested?

Can this be done in the near future

Yes.

Change 165490 had a related patch set uploaded (by Nemo bis):
Enable Collection by default on all wikis

https://gerrit.wikimedia.org/r/165490

Change 165490 merged by jenkins-bot:
Enable Collection by default on all wikis

https://gerrit.wikimedia.org/r/165490