Support Adguard's [-ext-has="..."] syntax => convert to uBO's :if(...)

[gorhill]

#1930 (comment)

I am considering adding Adguard's English filters to uBO's stock lists, as it takes care of many things not covered by EasyList, so extending compatibility as much as possible is a requirement.

[happysurf]

Actually I use Adguard Spyware filter, Social Filter and Annoyances filter.
These filters are relatively small but very powerful without any problems.
In my opinion are better of > Social > Fanboy's lists and > Privacy >Easy Privacy.
Will be great add also these filters.
Filters: https://kb.adguard.com/en/general/adguard-ad-filters

Why UBO use only in the Adguard English filter a very small number of entries?

Adguard Annoyances Filter​​​​​
6.857 used out of 6.917​​
​​
Adguard Social Media Filter​​
​​​3.796 used out of 3.978​​
​​
Adguard Spyware Filter​​
​​​5.233 used out of 5.280​​
​​
English filter​​
​​​7.223 used out of 79.963​​​

[gorhill]

Why UBO use only in the Adguard English filter a very small number of entries?

Read the documentation please: https://github.com/gorhill/uBlock/wiki/Dashboard:-3rd-party-filters.

[gorhill]

Fixed with be9d76f.

[gorhill]

The real fix does map Adguard's -ext-has[...] to uBO's :if(...), given that -ext-has is often used with procedural selector contains as part of its argument.