[DejaVu-fonts] [PATCH] Add italic Mathematical Alphanumeric Characters to DejaVu Serif

[Frédéric W. <fre...@fr...>]

The attached patch adds italic letters from the Mathematical
Alphanumeric block into DejaVu Serif. This was done automatically by
copying the BMP characters from DejaVu Serif Italic using
https://github.com/fred-wang/MathFonts/blob/master/CheckFont.py (itself
based on http://www.w3.org/TR/xml-entity-names/#alphabets). The italic
letters are the most important for math because by default variables are
in italic, but in follow up patches I can do that for bold, sans-serif
etc and do the same for DejaVu Sans Serif...

I know that DejaVu Serif Italic already contains these characters and
that it is even done more cleanly by using references to the BMP letters
rather than copying the glyphs. However, this method does not guarantee
that they will be taken by a math rendering engine. At least, this does
not work for the mathvariant implementation in Gecko (and probably other
standard-compliant MathML engines) which first try to follow the spec by
using Mathematical Alphanunumeric characters (from *any* font installed
on the system), and otherwise fallback to the BMP of the italic face.

-- 
Frédéric Wang
maths-informatique-jeux.com/blog/frederic