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By default, the monospace font for my distribution (Trisquel) is Font A. I would like to change it to font B. Some time ago, I managed to make a partial change to Font C, but I have since forgotten this method and cannot reproduce it.

The trouble is that now I may see all three fonts in monospaced contexts. Using gnome-tweak-tool as both root and user, I have changed the "monospace" field to Font B. I have also done this via the command line on gsettings, again as both root and user. However:

  • If a web page requests the style {font-family: monospace;}, Font C displays. Edit: this was a setting in Firefox, which I have changed.
  • In the Inkscape and gedit font menus, there is a font called simply "Monospace", which is font A. My distribution's default UI fonts, which I have changed, also display in these menus under the names "Sans" and "Serif".
  • When Thunderbird messages I have received are formatted as plain text, they are displayed in Font A. Unless explicitly changed, messages I write also display in the fonts "Sans" and "Monospace".

How can I fix this situation, such that Font B displays in all contexts described above, and the mysterious "Sans" font is replaced by the UI font I am currently using?

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12

Add this to yours ~/.config/fontconfig/fonts.conf file to set Font B as default monospace font

<match target="pattern">
  <test name="family" qual="any">
    <string>monospace</string>
  </test>
  <edit binding="strong" mode="prepend" name="family">
    <string>Font B</string>
  </edit>
</match>

Or to /etc/fonts/local.conf to set it system-wide.

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3
  • 1
    The file did not exist, so I created it and added that text to it, surrounded by <?xml version="1.0"?> <!DOCTYPE fontconfig SYSTEM "fonts.dtd"><fontconfig> and </fontconfig>. It did not work, even after running sudo fc-cache -f -v. – Lee Sleek Dec 21 '13 at 19:34
  • 1
    To be clear, no need to add <?xml... or anything else to that file. Its exactly as it is shown above. Save. Then you can test if its working with: fc-match monospace (be sure "Font B" exists under that name). If you need more than one rule, wrap it around <fontconfig> tag. – lepe Aug 21 '17 at 6:17
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    This works, but how does one set the size as well? I tried Font B 14 and it didn't work. – legends2k Jun 12 '18 at 16:20
5

I found this to be working:

gsettings set org.gnome.desktop.interface monospace-font-name 'Noto Mono 11' (Probably not all apps, gedit changes instantly)

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-1

I figured it out by searching the system for the name of Font A. There should be a file (more accurately, a link to a file) "/etc/fonts/conf.d/01-trisquel.conf". You will need to edit this file to include the names of your chosen fonts as highest priority (above the existing <family> entries).

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