[SOLVED] Linux system and Firefox font name are different

[ineuw]

Firefox and Linux Mint System DejaVu font names are different. Linux uses the free font version(?) which appends the word "Book" to the name
Using it in user.js fails. I am curious how Firefox manages this internally when the font is set in Settings, but not from the user.js?

This fails:

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user_pref("font.name.monospace.x-western", "DejaVu Mono Book");
user_pref("font.name.sans-serif.x-western", "DejaVu Sans Book");
user_pref("font.name.serif.x-western", "DejaVu Serif Book");

[morat]

Honestly, I'm sure what you are asking. Firefox likely gets a list of the system fonts in the C++ code.

There is a difference between the internal font name and the font filename.

Font Naming
http://silnrsi.github.io/FDBP/en-US/Font_Naming.html

Here is how to create a list of all DejaVu fonts in the system clipboard.

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(function () {
  var fontEnumerator = Components.classes["@mozilla.org/gfx/fontenumerator;1"].
    getService(Components.interfaces.nsIFontEnumerator);
  var allFonts = fontEnumerator.EnumerateAllFonts({});
  var dejaVuFonts = [];
  for (var i = 0; i < allFonts.length; i++) {
    if (/DejaVu/i.test(allFonts[i])) dejaVuFonts.push(allFonts[i]);
  }
  var clipboardHelper = Components.classes["@mozilla.org/widget/clipboardhelper;1"].
    getService(Components.interfaces.nsIClipboardHelper);
  clipboardHelper.copyString(dejaVuFonts.join(", "));
})();

You can evaluate the code snippet in the browser console.

My output: DejaVu Math TeX Gyre, DejaVu Sans, DejaVu Sans Mono, DejaVu Serif

I used a similar code snippet to troubleshoot Thunderbird fonts.

Other thread: http://forums.mozillazine.org/viewtopic ... #p14796116

[ineuw]

Honestly, I'm sure what you are asking. Firefox likely gets a list of the system fonts in the C++ code.

Thanks for the reply. You are right because my post was poorly composed. The issue is a Linux Mint issue and not Firefox. But since I noticed the name differences between the system and Firefox font names, I wondered how Firefox handles fonts. Are they referring to System fonts or an internal list? This, you clearly answered.

I brought this up, less so for myself because I resolved it by not using the Linux Mint font names, but look up in Firefox before specifying them in users.js.

I am attempting to use a single font family in Linux Mint System and all apps. The process is slow because previously selected font families mono font didn't show the text properly when editing. So thanks again.

[ElTxolo]

Firefox and Linux Mint System DejaVu font names are different. Linux uses the free font version(?) which appends the word "Book" to the name

[....]

• If you want to know, the real name of each font, use:
  

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  fc-list | grep -i ['font name']
  
  In your example, with the font DejaVu:
  
  fc-list | grep -i dejavu
  

  
  
  Graphic example:
  
  
  
  
  
  
  
  
  
  
  
  
  
  Cheers!!

[ineuw]

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fc-list | grep -i ['font name']

Thanks for the snippet. This is what I found. the font-style for standard font of DejaVu is "Book" and Linux Mint appends this in their font name.

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/usr/share/fonts/truetype/dejavu/DejaVuSerif-Bold.ttf: DejaVu Serif:style=Bold
/usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf: DejaVu Sans Mono:style=Book
/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf: DejaVu Sans:style=Book
/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf: DejaVu Sans:style=Bold
/usr/share/fonts/truetype/dejavu/DejaVuSansMono-Bold.ttf: DejaVu Sans Mono:style=Bold
/usr/share/fonts/truetype/dejavu/DejaVuSerif.ttf: DejaVu Serif:style=Book

[ElTxolo]

[....] Thanks for the snippet.

• You're welcome!!
  
  
  
  
  
  
  
  
  
  Cheers!!