About :matches-property() pseudo-class

[superlex]

Hi,
AdGuard supports :matches-property() pseudo-class:
https://adguard.com/kb/it/general/ad-filtering/create-own-filters/#extended-css-property

Does uBlock support it, or it may support it in the future?

Currently some rules in AG filters lists for uBO contain it, and they are invalid.

Example:
fotor.com#$?##main > div > div + div:matches-property(offsetWidth=160) { remove: true; }
found in https://filters.adtidy.org/extension/ublock/filters/2_without_easylist.txt

[MasterKia]

:matches-attr():
https://github.com/uBlockOrigin/uBlock-issues/wiki/Procedural-cosmetic-filters#subjectmatches-attrarg

[mapx-]

maybe matches-property is more like uBO's matches-media (matches-media has no regex implementation)

[gorhill]

matches-property is meant to match properties of elements, matches-media is something else.

[gorhill]

Does uBlock support it, or it may support it in the future?

It's not supported. It may be supported if maintainers ask for it with cases. As of now I see only 11 occurrences in AdGuard Base.

[superlex]

Ok, so if these rules don't cause issues to uBO we can leave things as they are.
Thanks :)

[krystian3w]

This is same or different:

gorhill/uBlock@aca7674bac

Shorter name can glitch unconverted AdGuard syntax.

[gorhill]

Use quotes when you want to mind leadeing/trailing spaces:

##button:matches-prop(innerText=" master")

Note that I used copy/paste. There is a non-breakable space in there, a plain space won't work.

---

Actually quotes are not needed, just need to use the non-breakable space as this is what is used in the property value.

[peace2000]

For Firefox users there's a convenient way to check properties of an element: right click an element in dev tools and click "Show DOM properties".