Open Wingdings.ttf font by STB_TrueType

[Jony01]

I've trouble with initialisation of some fonts by function stbtt_InitFont which return zero

List of unopenable font on my windows:

"Bookshelf Symbol 7"
"Marlett"
"MS Outlook"
"MS Reference Specialty"
"MT Extra"
"Symbol"
"Webdings"
"Wingdings 2"
"Wingdings 3"
"Wingdings"
fonts.zip

Rest 270 true type fonts works fine.

Is there some restriction why I can't open this fonts?

[nothings]

Most fonts contain information that tell software how to take a unicode (or ASCII) character and find the correct way to draw it. Because the primary API of stb_truetype is Unicode, we don't handle fonts that don't have that information.

All of the fonts in fonts.zip are "symbol" fonts which use a microsoft-specific mapping system from character identifiers (which aren't Unicode) to determine how to draw it. Because it's not unicode stb_truetype doesn't support it. I'm not sure why this has never come up before, given how long stb_truetype has been out.

Anyway, to fix it, we need to add support for cmap platformID=3 (Miicrosoft) encodingID = 0 (symbol font). Should probably make the logic first check for a non-symbol encoding, only check for 3/0 if it doesn't find a regular one first.

[nothings]

I've opened an issue, #1283