Re: (forw) [DNG] Life After Firefox 56

Rick Moen writes:
(lots more useful and sad info about the upcoming extension change)

Quoting Rick Marti:
> > Firefox comes with a bunch of good privacy features that are turned
> > off by default, [ ... ]
> > The convenient way to enable the features (especially on small devices
> > where dinking with about:config is a pain) is to make an extension
> > that just sets the preferences you care about (and restores them to
> > the defaults on uninstall if the user didn't change them manually).

If you just need to set preferences to fixed values, there's another
easy way: create a file called user.js in the config directory (the
same place prefs.js lives). user.js overrides prefs.js, so it's a
good way to force preferences that you think might get reset when you
don't expect it. Syntax is like this (or copy lines out of prefs.js):

// Image animation: normal, once, none
user_pref("image.animation_mode", "none");

// Custom newline handling:
//   0. Paste newlines intact (old linux default)
//   1. Paste up to the first newline
//   2. Replace newlines with spaces (ff3 default, old win default)
//   3. Strip newlines
//   4. Replace with commas
//   5. Strip newlines and surrounding whitespace 
user_pref("editor.singleLine.pasteNewlines", 2);

... and so forth. Of course, you have to know the name of the pref
and what the allowed values are, but you can usually find that in
a web search.

Though it will be sad not to be able to toggle preferences from the
UI, like the extensions that let you briefly allow animated images
if there's a particular image you want to see but otherwise don't
want annoying things flashing at you while you're trying to read.

        ...Akkana