###\5f filters not read by uBlock

[ryanbr]

\5f iph_cp_popup Isn't read by uO, Because of the "_" being the first character

Open http://blog.hu/ in Firefox/Adblock Plus which hides the cookie element, and then with uBlock which shows the cookie message

[gorhill]

blog.hu###_iph_cp_popup works fine for both uBO and ABP -- and is easier to parse by humans. Why not use this?

Edit: blog.hu###\_iph_cp_popup also works fine for both uBO and ABP.

[ryanbr]

Guessing that css elements shouldn't begin with "_" and maybe other non-standard ascii charaters may break the filters.

[gwarser]

@gorhill blog.hu###\_iph_cp_popup works because is specific. Even blog.hu###\5f iph_cp_popup works because is inserted forcibly.

###\_iph_cp_popup not work.

[gwarser]

Bit of documentation:

An ID selector contains a "number sign" (U+0023, #) immediately followed by the ID value, which must be an CSS identifiers.

https://www.w3.org/TR/css3-selectors/#id-selectors

identifiers (...) cannot start with a digit, two hyphens, or a hyphen followed by a digit.

https://www.w3.org/TR/CSS21/syndata.html#value-def-identifier

and

Keywords and property names beginning with -' or '_' are reserved for vendor-specific extensions

https://www.w3.org/TR/CSS21/syndata.html#vendor-keywords

[ryanbr]

Can we get an update on this?