Mark LaPierre wrote: > Has anyone figured out how to make Firefox 45.4.0 on CentOS 6 use xdgurl > to handle xdg:// URLs? > > Google is full of suggestions that don't work. When I select a an > xdg:// link I don't get a dialog asking me what to do like Google says I > will. Instead I get a message that says Firefox doesn't have a clue how > to handle this URL. Do you want to try again? > > I tried about:config > > I added: > > network.protocol-handler.external.xdg user set string /usr/bin/zdgurl I don't think those types of prefs are used any more ? A lot of the information out there on adding protocol handlers to Firefox on Linux is out of date or wrong ... A couple of ways that work for me (on CentOS 6, using Gnome) with Firefox 45: 1. Create the file $HOME/.local/share/applications/xdg containing [Desktop Entry] Name=xdg Type=Application Exec=/usr/bin/xdgurl %U Terminal=false MimeType=x-scheme-handler/xdg; NoDisplay=true Then run: desktop-file-install $HOME/.local/share/applications/xdgdesktop \ --rebuild-mime-info-cache --dir=$HOME/.local/share/applications Start firefox and browse to a xdg:// URL - it still prompts for the application use the first time - but after that, it should work OK Note: I haven't actually done this for an 'xdg' protocol handler - but it works for launching other apps using other custom protocol handlers 2. Set up a protocol handler in a central autoconfig 'mozilla.cfg' file using Javascript - this is the method I use to automatically add a protocol handler for all users (and doesn't require any user intervention) - let me if you want more details about this method James Pearson