Hi,

(mistakenly posted this as uBlockOrigin/uAssets#5241, sorry...)

Within uBO options, when looking at / editing a specific filter list, I was looking for filter lines which would affect github.io. I searched for github and was dismayed to see '1000+' hits in the main 'uBlock filters' list.

Now, there is a trivial workaround for my use case (actually enter github.io); but suppose I were truly looking for an issue with github.com? The 1000+ mentions of https://github.com/uBlockOrigin/uAssets/issues/%d would block me completely.

... which led me to wish for two (and a half) things:

1. search-within-list which is comment-sensitive; that is, ignore lines which are comments
   a. suboption which includes comments which are valid rule syntax, ignoring only human-readable comments; obviously, not the default...

2. search-within-list which is domain-sensitive; that is, find rules which match the given domain or domain-wildcard. This would do wildcard matching in both directions: I enter github.io, it matches rules looking for github.io and github.*; I enter github.*, it matches both of those + github.com. Possibly 'domain' is the wrong concept; searching for *.github.io/*.css ought to be able to match rules with that specificity.

The UI could look something like: