[File] [PATCH] fonts: TrueType fonts lose their MIME type since the FontKit change

[Christos Zoulas]

Applied, thanks!

christos

> On Oct 21, 2026, at 10:33 AM, Nicolas Grekas <nicolas.grekas at gmail.com> wrote:
> 
> Hi,
> 
> Since fonts 1.55 ("Recognize FontKit"), plain TrueType fonts get no MIME type and no extension. Here is DejaVuSans-Bold.ttf, with magic/Magdir/fonts at 1.54 and then at 1.55:
> 
>   1.54: TrueType Font data, 19 tables, 1st "FFTM", 26 names, Macintosh
>         --mime-type: font/ttf, --extension: ttf/tte, --apple: ????tfil
>   1.55: TrueType Font data, 19 tables (FontKit), 1st "FFTM", 26 names, Macintosh
>         --mime-type: application/octet-stream, --extension: ???, --apple: UNKNUNKN
> 
> The !:mime, !:apple and !:ext lines now follow the new FontKit test, so they only apply to FontKit fonts. The new ">>>12 ubelong !0x464b2020" test also prints "(FontKit)" for every font that is not a FontKit one.
> 
> The attached patch moves the FontKit test after the annotations of the TrueType line, and removes the description of the second test. Plain TrueType fonts get font/ttf back, and the output for a FontKit font doesn't change. I checked that with a copy of DejaVuSans-Bold.ttf where the first table tag is "FK  ".
> 
> PHP bundles libmagic in its fileinfo extension, and PHP 8.6 (in beta now) ships 5.48. So PHP apps will see TrueType uploads as application/octet-stream unless this is fixed before PHP 8.6.0.
> 
> Thanks,
> Nicolas Grekas
> 
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