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Comment by ck2 | Hacker News Reader

I wish ublock could do basic url rewrites without having to use greasemonkey/scripts/plugins

Things like rewriting www.reddit to old.reddit without anything extra.

After switching browsers, I never actually reinstalled Greasemonkey as uBlock Origin has the capability to inject custom JavaScript.

Check "I am an advanced user", then in "Advanced settings" set the parameter to something like:

    userResourcesLocation file://localhost/home/user/stuff/scriptlets.js

And in the scriptlets.js file, text between the line "/// ScriptName.js" and an empty line is considered a separate scriptlet, which you can add to an URL in "My filters" like:

    news.ycombinator.com##+js(ScriptName.js)

The annoying bit is that scriptlets are cached, and to update them, you have to edit the "userResourcesLocation" setting, for that reason I made "scriptlets1.js" a symlink to the original file and switch back and forth whenever I edit it.

Thanks for this!

But is a file URL working for you on Windows? http:// URLs are working but file:// urls are not being parsed for me.

It certainly worked for me when I used Windows. Try either of these:

    file:///C:/stuff/scriptlets.js
    file://localhost/C:/stuff/scriptlets.js

I must say I wouldn't want to add a remote 3rd party URL to this setting, what if it updates with bad code?

Are you using Firefox?

Those URLs do not work for me when using Firefox + Windows. But the code works perfectly fine when I upload it to github gists and use the raw url.

And yeah, like you said do not want to inject remote JS into every site I visit so won't be using a remote URL.

No, I'm using Vivaldi. Chromium-based browsers have an option "Allow access to file URLs" for extensions. In Firefox this functionality is missing. But it might be possible to patch omni.ja to get it anyway:

https://bugzilla.mozilla.org/show_bug.cgi?id=1266960#c43

Yeah, figured the file access permission was the issue. Thanks for the help!

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