Support multiple fonts

[fenhl]

I would like to request a feature where multiple fonts can be combined, with one acting as the main font and the others as fallbacks, similar to CSS.

The reason I'm requesting this is that a project I'm working on has a goal of displaying any text that can appear in a chat message, i.e. arbitrary Unicode. As a step in that direction, I want to switch to the Noto typeface, where each font is split into multiple TTF files since there is a hard limit of how many glyphs can be in a single TTF file.

Alternatively, a lower-level feature, such as a method on the font type to check whether it contains a glyph for a given character, could allow me to implement this myself.

Any solution would ideally be available on both the Raspberry Pi version and the open-source version, since most of my info-beamer projects target both platforms.

[dividuum]

How do multiple font files and switching between them work for other systems? Multiple files are open and if one doesn't provide a glyph it falls back to the next one?

[fenhl]

That's how it works in CSS as far as I can tell.