Disable ctrl-b keyboard shortcut in Firefox?

Question

As a tmux user, there is a lot of Ctrl+b going on. Also a lot of Firefox.

It's safe to say I never, ever want to see the book mark vertical bar. No interest. Never had any in 20 years of computer use.

Is there any way to disable Ctrl+b in Firefox without using a plug-in?

Answer 1

I've been able to disable the Ctrl+B shortcut by using the Shortkeys extension.

Its configuration can be a little cumbersome, so here's a quick guide:

• In the extensions page (about:addons), click the ... menu next to the Shortkeys entry, and select "Preferences"
• Add a new shortcut:
  • In the "Shortcut" column, type "Ctrl+B".
  • In the "Label" column, enter something like "Disable bookmarks sidebar".
  • In the "Behavior" column, select the "Do nothing" entry
• Don’t foget to click the Save shortcuts button at the bottom of the page!

Note: This only works in the context of a web page. The default Firefox action will still execute if you press Ctrl+B while the cursor is e.g. in the URL bar or the search bar. But for me it's a great improvement already!

Answer 2

Since Firefox 72, this needs to be done with autoconfig.js. See Firefox documentation and example usage.

OLD WAY: This can be accomplished using userChrome.js

Use the following code:

var key = document.getElementById('viewBookmarksSidebarKb');
if (key) key.remove();

Credit - I found this thanks to this answer https://superuser.com/questions/1318336/how-to-disable-ctrlq-shortcut-in-firefox-on-linux/1348082#1348082