From: Neil Harris (firstname.lastname@example.org)
Date: Thu May 28 2009 - 07:41:15 CDT
Andrew West wrote:
> 2009/5/28 Andrew Cunningham <email@example.com>:
>> But that said ... no browser will allow you to set a preferred default font
>> for Tifinagh.
> In my opinion, all browsers are broken in this respect.
>> On Windows 7, IE8 will use Ebrima by default. The question is
>> what will Firefox use as default for Tifinagh on Windows 7. Will you also be
>> stuck with Ebrima in both IE and Firefox?
> It all depends on what other fonts you have on your system (see below).
>> If anyone knows how and why Firefox selects fonts, I'd love to know.
> I've got seven working Tifinagh fonts on my system (Code2000, DejaVu
> Sans, DejaVu Sans Condensed, Everson Mono, Hapax Berbère, Hapax
> Touareg and Hapax Touareg DàG), but when I configure my default font
> for Firefox to be something that does not cover Tifinagh (e.g. Arial)
> the Tifinagh characters on
> <http://www.alanwood.net/unicode/tifinagh.html> are rendered using the
> Unicode BMP Fallback SIL font. If I then uninstall Unicode BMP
> Fallback SIL and reload Firfox it now uses the LastResort font to
> display the Tifinagh characters. Continuing to uninstall each font one
> at a time, the order of priority is:
> 1. Unicode BMP Fallback SIL
> 2. LastResort
> 3. Hapax Touareg DàG
> 4. Hapax Touareg
> 5. Hapax Berbère
> 6. Everson Mono
> 7. DejaVu Sans Condensed
> 8. DejaVu Sans
> 9. Code2000
> i.e. reverse alphabetical order. I guess what Firefox is doing is
> iterating through all fonts and checking for coverage of the Tifinagh
> characters, and the last iterated font that has coverage is the font
> that is used ... which is rather unfortunate if either Unicode BMP
> Fallback SIL or LastResort is installed. On the other hand, if you are
> a font developer and you want your Tifinagh font to be used by default
> by Firefox then simply name it something like "ZZZMyTifinaghFont".
> (And if I uninstall all fonts with Tifinagh coverage Firefox displays
> boxes with a hex codepoint value inside ... not from a built-in font,
> but drawn dynamically I think, as the relative sizes of the hex digits
> and their enclosing box varies at different zoom levels)
Andrew, Could you please file a bug report for this at
It should be fairly easy to fix this in the next revision of Firefox, if
only by adding a bit of special-case code that puts "fallback" and "last
resort" fonts earlier in the search list.
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