Feature Request: Use all system fonts

[Phytolizer]

This might result in slower startup time, but I would like the option to shift between all installed monospace fonts instead of having to enumerate them manually in the "includeFontFamilies" config option.

[bmealhouse]

Hi @onContentStop, thanks for submitting this issue.

The “includeFontFamilies” config setting was designed mostly for programming fonts developers purchase.

As far as I know, I don’t have access to look at what system monospaced fonts are installed. I could dig into this a bit more to see if anything has changed since the last time I checked. Otherwise, if you have any ideas about how this could be accomplished, please feel free to open a PR.

There is another way to accomplish this without looking at the file system for installed monospace fonts. What fonts are missing and what platform are you using (mac, windows, linux)?

[Phytolizer]

It's not necessarily that a specific font is missing, but more that it would be a generic solution.

On Linux, you can get this information by running in a shell fc-list :mono family | sed 's/\\-/-/g'.
On Windows it is more complicated, involving reading the registry and getting font metrics with .NET. I don't have an elegant solution for that.

[bmealhouse]

Thanks for the suggestion @onContentStop.

I would certainly like to have a more generic solution since it would remove another one of my config settings (ignoreCodefaceFontFamilies) as well. When I have time I will do more research on how this could work across different platforms. The command you mentioned above doesn't work on macOS either.

As I mentioned before, PRs are welcome if you are also interested in digging into this.

[Phytolizer]

Sure, I'll get to work figuring out how to integrate into your code, then make a Linux implementation at the very least. Unfortunately that nice one-liner I wrote relies on you having fontconfig installed (on Mac, through Homebrew), so it won't work for most OSX machines unless they install that. I can work on a generic Objective-C solution for that though. As for Windows, I still don't know :(