> When I posted, I was under the impression that ACF was open source. But the GitHub repo doesn’t list one, so if it’s not open source…WTF.

Isn't it here?

https://github.com/AdvancedCustomFields/acf

If you mean the licence, it's in readme.txt:

https://github.com/AdvancedCustomFields/acf/blob/master/read...

Thanks! The GitHub app reports it as "None" (https://imgur.com/a/5dyaTfX), but now I see it's "GPLv2 or later".

Clearly AdvancedCustomFields should have filed a trademark to prohibit Wordpress from fully stealing it.

GPL code, trademarked branding. If you want to fork then you have to actually fork.

Oh the irony.

> Clearly AdvancedCustomFields should have filed a trademark to prohibit Wordpress from fully stealing it.

They did:

Advanced Custom Fields — https://tsdr.uspto.gov/#caseNumber=98321164&caseSearchType=U...

ACF — https://tsdr.uspto.gov/#caseNumber=98321135&caseSearchType=U...

Oh nice. Then WordPress shouldn’t be able to take over without renaming, right?

they renamed to "secure custom fields"

They kept the permalink afaik, which is probably still likely to cause confusion in the marketplace and may still be a trademark issue.

Without knowing this drama, if I found and clicked an ACF link on a 2 year old Reddit post and ended up at Secure Custom Fields, I’m not sure I’d know it wasn’t by the ACF folks. Just their branding for the v2 or whatever. I think customers have a reasonable expectation that permalinks won’t take them to unrelated products.

Yep. And the string 'acf' is used throughout the plugin and the plugin download page (in reviews, etc). And 'acf' is indeed a pending trademark registration.

Not good.

Very much doubt they will be able to trademark “acf”.

I think being GPL is a requirement to host plugins in wp.org, so yes, that free version available there is (was?) open source.

Forking isn't the issue. Here they just took the whole ID/address from which existing installations will continue to be updated from. This is theft. I have no doubt it will be added to the lawsuit.

While technically they own the platform and can do whatever they want, there is clearly ill intent here and it'll be used against them.