Daniel Lange's blog (Entries tagged as firefox)

Xfce4 opening links in Chromium despite Firefox having been set as the default browser

nospam@example.com (Daniel Lange) — Tue, 27 Jun 2023 13:55:00 +0000

Installing a laptop with the shiny new Debian Bookworm release finds a few interesting things broken that I probably had fixed in the past already on the old laptop.

One, that was increadibly unintuitive to fix, was lots of applications (like xfce4-terminal or Telegram) opening links in Chromium despite Firefox being set as the preferred webbrowser everywhere.

update-alternatives --config x-www-browser was pointing at Firefox already, of course.
The Xfce4 preferred application from settings was Firefox, of course.
xdg-mime query default text/html delivered firefox-esr.desktop, of course.

Still nearly every link opens in ███████ Chromium...

As usually the answer is out there. In this case in a xfce4-terminal bug report from 2015.

The friendly "runkharr" has debugged the issue and provides the fix as well. As usually, all very easy once you know where to look. And why to hate GTK again a bit more:

The GTK function gtk_show_uri() uses glib's g_app_info_launch_default_for_uri() and that - of course - cannot respect the usual mimetype setting.

So quoting "runkharr" verbatim:

1. Create a file `exo-launch.desktop´ in your `~/.local/share/applications´ directory with something like the following content:

    [Desktop Entry]
    Name=Exo Launcher
    Type=Application
    Icon=gtk-open
    Categories=Desktop;
    Comment=A try to force 'xfce4-terminal' to use the preferred application(s)
    GenericName=Exo Launcher
    Exec=exo-open %u
    MimeType=text/html;application/xhtml+xml;x-scheme-handler/http;x-scheme-handler/https;x-scheme-handler/ftp;application/x-mimearchive;
    Terminal=false
    OnlyShowIn=XFCE;

2. Create (if not already existing) a local `defaults.list´ file, again in your `~/.local/share/applications´ directory. This file must start with a "group header" of

    [Default Applications]

3. Insert the following three lines somewhere below this `[Default Applications]´ group header [..]:

    x-scheme-handler/http=exo-launch.desktop;
    x-scheme-handler/https=exo-launch.desktop;
    x-scheme-handler/ftp=exo-launch.desktop;

And ... links open in Firefox again. Thank you "runkharr"!

Firefox asking to be made the default browser again and again

nospam@example.com (Daniel Lange) — Sat, 03 Nov 2018 08:55:00 +0000

Firefox on Linux can develop the habit to (rather randomly) ask again and again to be made the default browser. E.g. when started from Thunderbird by clicking a link it asks but when starting from a shell all is fine.

The reason to this is often two (or more) .desktop entries competing with each other.

So, walkthrough: (GOTO 10 in case you are sure to have all the basics right)

update-alternatives --display x-www-browser
update-alternatives --display gnome-www-browser

should both show firefox for you. If not

update-alternatives --config <entry>

the entry to fix the preference on /usr/bin/firefox.

Check (where available)

exo-preferred-applications

that the "Internet Browser" is "Firefox".

Check (where available)

xfce4-mime-settings

that anything containing "html" points to Firefox (or is left at a non-user set default).

Check (where available)

xdg-settings get default-web-browser

that you get firefox.desktop. If not run

xdg-settings check default-web-browser firefox.desktop

If you are running Gnome, check

xdg-settings get default-url-scheme-handler http

and the same for https.

LABEL 10:

Run

sensible-editor ~/.config/mimeapps.list

and remove all entries that contain something like userapp-Firefox-<random>.desktop.

Run

find ~/.local/share/applications -iname "userapp-firefox*.desktop"

and delete these files or move them away.

Done.

Once you have it working again consider disabling the option for Firefox to check whether it is the default browser. Because it will otherwise create those pesky userapp-Firefox-<random>.desktop files again.

Configuring Linux is easy, innit?

Mozilla Firefox and Thunderbird Menu font sizes

nospam@example.com (Daniel Lange) — Sun, 04 Sep 2016 11:37:57 +0000

The font size Mozilla chose for Firefox and Thunderbird menus looks awfully large on Netbook screens. It wastes space and is visually at odds with reasonably sized content. And for some weird reason you can set the content font and size via the menu but not the font and size for the drop-down menus themselves.

As the "Theme Font & Size Changer" Add-On doesn't work reliably and phones home way too often (showing a nag screen), I dug back into how to do this "manually". Probably a decade after I fixed this the first time...

You need to create the file ~/.mozilla/firefox/*/chrome/userChrome.css with * being your profile directory (<random_number>.default usually) and you most probably have to create the chrome directory first.

The same for Thunderbird resides in ~/.thunderbird/*/chrome/userChrome.css. Here again the chrome directory will most probably need to be created first.

/* Global UI font */
* { font-size: 10pt !important;
font-family: Ubuntu !important;
}

needs to go into these files for Firefox or Thunderbird respectively. The curly braces are important. So copy & paste correctly. Symlinks or hardlinks are fine if those files do not need to differ between your web browser and your email client.

Restart Firefox and/or Thunderbird to see the effect.

Obviously you can choose any other font and font size in the snippet above to suit your taste and requirements.

If you are massively space-confined and don't mind a quite ugly UI, check out the Littlefox Add-on. Ugly but optimal use of the minimal screen estate with very small screens.

SyncPlaces, SortPlaces ... preserving these and other excellent Firefox add-ons

nospam@example.com (Daniel Lange) — Sun, 08 Jul 2012 03:45:00 +0000

A few days ago I was re-installing a laptop of mine. Downloading the default add-ons for Firefox came to a stall as I could not find SyncPlaces, which I've been using for a few years to synchronize my bookmarks between the systems I use. As I knew the author, Andy Halford, has a homepage I surfed there and found...

"So long Mozilla and thanks for all the fish

If you are here looking for any of my extensions (SyncPlaces, SortPlaces, CheckPlaces or SearchPlaces) then I'm sad to inform you that these are no longer available.

Unfortunately I do not have the time or the motivation to continue to support these in light of the close-minded, short-sighted and increasingly inflexible organisation that Mozilla has become. Apparently spending 1000's of hours promoting their products and providing my extensions to the general public to fill the gaps in their product, and repair bookmarks destroyed by Firefox Sync, counts for little and does not deserve any flexibility or support from them. Apparently add-on developers are second-class citizens to them whatever they may say. Surprising given that these are the main USP of Firefox, and developers are providing their time and efforts for free. My decision was taken after a series of problems the last one being the final straw."
Andy Halford, 17.06.12 screenshot

I was unable to find any details what caused this rant and the serious decision to remove his excellent add-ons from the Internet. There are a few discussions on the Mozillazine forums but nothing enlightening so far. Andy's personal homepage, family homepage and the TotalValidator product he and his wife offer are all still online, he just pulled all his popular Firefox add-ons.

Andy states on his homepage

"I will not be answering any further emails on this matter, I suggest that you direct any questions to Mozilla themselves and ask them why they were happier for me to leave than to use a little common sense." [ib.]

I still tried to contact him and asked for an interview but he has not come back to me so far. I've sent a second email with the URL of this blog post.

The SyncPlaces plug-in is still prominently featured on Wikipedia's Comparison of browser synchronizers at press time.

Now this is a mess. With some ungraciously licensed closed source software, you're probably used to plan migrations once license terms run out or you have to upgrade to the much improved successor product because "extended support" for your perfectly fine current version gets ridiculously expensive.

But with open source you have more rights and e.g. the security to use the product as long as you wish. If you have kept a copy of the code (and the license file). Because in this case the Mozilla Firefox installer .xpi's are hard to come by. Mozilla has a centralized add-on repository and once the files are pulled from there, they quickly vanish off the net. Now don't get me wrong, these plug-ins are now unmaintained software, so you will have to migrate at some point in time, but not necessarily now. You have some time for planning and evaluation of alternatives.

Continue reading "SyncPlaces, SortPlaces ... preserving these and other excellent Firefox add-ons"

Kubuntu 9.10 (karmic) 64bit firefox java plugin

nospam@example.com (Daniel Lange) — Sun, 06 Dec 2009 17:00:00 +0000

For some unknown reason the (K)Ubuntu developers did not update the Java plugin for firefox after jaunty (yet?).

The version that Karmic (9.10) pulls out of the multiverse repository is still jaunty's (9.04).

So when you try:

apt-get install sun-java6-plugin

you'll get something like

   Reading package lists... Done
   Building dependency tree
   Reading state information... Done
   Some packages could not be installed. This may mean that you have
   requested an impossible situation or if you are using the unstable
   distribution that some required packages have not yet been created
   or been moved out of Incoming.
   The following information may help to resolve the situation:
   
   The following packages have unmet dependencies:
     sun-java6-plugin: Depends: sun-java6-bin (= 6-15-1) but 6-16-0ubuntu1.9.04 is to be installed
   E: Broken packages

Duh.

Actually if you have the Java Runtime Environment (JRE, package name sun-java6-jre) installed all files needed are already present.
Just not put in the right place on the filesystem.

So, run:

sudo apt-get install sun-java6-jre # install JRE if needed
sudo ln -s /usr/lib/jvm/java-6-sun/jre/lib/amd64/libnpjp2.so /usr/lib/mozilla/plugins/

This will install the JRE (if it's not already installed) and will symlink the firefox plugin for java in place so that it'll be found after a browser restart.

Updated Greasemonkey script for Xing

nospam@example.com (Daniel Lange) — Sat, 05 Apr 2008 21:45:37 +0000

Xing has just updated it's image-thumbnails naming "algorithm" once again:

You'll now find thumbnails named /2f1127fe2.3144098_s2,2.jpg, so including another component like <comma><digit> added to the name. Thus the Greasemonkey script linked from my article Greasemonkey to enlarge Xing pictures needs to have it's main regex amended:

Change \_s(1|2|3)?\. to read \_s(1|2|3)?(,\d)?\. in three places in the script.

Or download an updated version here. I hope "louis" will update the version hosted at userscripts.org, too.

Updates

02.05.2008 As Xing adds multi-digit numbers to the thumbnails now (like /7553bd445.4550412_s2,10.jpg), you need to replace \d with \d+ in the above regex. The linked Greasemonkey script is updated.

16.11.2011 And again the URLs changed. This time appending a pattern like ,4.57x75.jpg. The linked script again was updated. If Scriptish and the auto-updating in Greasemonkey mature, I'll add auto-updating to the script file via the @updateURL parameter.

13.05.2012 The Xing layout is still changing as they Ajaxify the site more and more. Currently the Xing XE is probably the best working enhancement to see Xing pictures in a recognisable size.

Greasemonkey to enlarge Xing pictures

nospam@example.com (Daniel Lange) — Wed, 27 Feb 2008 22:30:00 +0000

I use Xing to manage some of my business contacts and even some friends have profiles there as well.

The default size of contact's pictures displayed on one's Xing homepage is 18x24px. On a higher dpi screens, you can thus barely recognize the person shown. As there are multiple sizes of all images available, it's pretty easy to just take (for example) http://www.xing.com/img/users/d/f/1/f34814409.5648827_s1.jpg, remove the _s1 and see a 140x185px version of the picture.

Greasemonkey, a Firefox extension to run user specified scripts on selected pages that you visit, can automate this with a nice script from user louis to download here. Or my updated version here.*

So, everytime I now hover my mouse over a tiny Xing thumbnail, it will show the "full resolution" version of the image. Simple, efficient.

Update

* Xing changed it's image naming scheme a bit, so one needs an updated Greasemonkey script for all images to work again. Link inserted into the article text ("Or my updated version here.")