Why YSK: Certain topics are stressful and tend to spread all over the site, including to unrelated communities. Blocking communities can be overkill and ineffective, and likewise for blocking individual users.

To do so, open up the uBlock Origin dashboard, go to the ‘My filters’ tab, and add this filter:

lemmy.world##article.row:has-text(/word1|word2|word3|word4/i)

For example:

lemmy.world##article.row:has-text(/Trump|Elon|Musk|nazi/i)

Then apply the changes and reload any open tabs, and all posts which contain any of your filtered words will simply not show up.

You’ll have to change “lemmy.world” at the start to whatever your actual instance is. You can filter as many or as few words as you want, just keep the / at the start, the /i at the end, and separate words with | pipes. What’s actually being filtered is a case-insensitive regex, if you want to get fancy with it.

Here are equivalent filters for reddit and Ars Technica:

reddit.com##div.thing[data-context="listing"]:has-text(/word1|word2|word3|word4/i)
arstechnica.com##article:has-text(/word1|word2|word3|word4/i)

As a disclaimer, I made these myself, and I’m not particularly familiar with creating uBlock Origin filters. There may be better ways to do this. Also the reddit one is specific to old.reddit.com, and the lemmy filter is made to work with the default lemmy.world web UI and may not work on other UIs without tinkering.

Yes, I know I’m just hiding my head in the sand.

    • zkfcfbzr@lemmy.worldOPEnglish
      1·
      35 minutes ago

      Hey! I’m pretty sure this one will work:

      infosec.pub##:not(a.community-link:matches-attr(title=/.*?leopard.*?/i)) article.row:has-text(/Trump|Elon|Musk|nazi/i):not(:has-text(/leopard/i))

      Where now we have three filters. If the community name matches the first regex, then nothing at all will be filtered out - and then the other two work the same as before. So any post that matches the blacklist regex will be filtered out unless it also matches the whitelist regex.

      I chose to make the first regex /.*?leopard.*?/i because my thinking is you may want to just copy/paste the other whitelist filter there for simplicity, but it might make more sense to do it like the others, like /leopardsatemyface|second community|third community|etc/i. The “title” of a community for the purpose of this filter should be whatever appears after /c/ in the URL, not counting the @lemmy.world (or whatever instance) part.