[Settings] An option to disable colour font emoji

[zadjii-msft]

Is there any merit to having an option to disable colour font emoji?

So any emoji used will be single colour using the font colour settings?

Originally posted by @mdtauk in #190 (comment)

[DHowett-MSFT]

There's some discussion about getting options into the renderer in #817.

[DHowett]

From @francogp

Environment

Windows build number: Win32NT 10.0.19041.0 Microsoft Windows NT 10.0.19041.0
Windows Terminal version (if applicable): 1.0.1402.0

Using WSL Ubuntu LTS version 20.04

I'm using this font, but can reproduced with others too: JetBrainsMono

Expected behavior

image taken by using other windows terminal emulators, like Terminus on windows, and Tilix or Terminator on Ubuntu. All the same results

Actual behavior

Lots of characters/emoticons have a wrong size at render. This is just an example. Look up the check emoticon ✔
It seems that its ignoring my font.

I believe DirectWrite prefers a color glyph for this.

I wonder if we should like to add emoji "range" settings for fine-grained control of this. Maybe I want to disable emoji WHITE SMILING FACE only?

[zadjii-msft]

Curious if this is a font feature that we added by happenstance back in #10433

[alexrsagen]

Is there any merit to having an option to disable colour font emoji?

Yes! For example, some CLI libraries may use colored text emojis in order to display a "selected" (green) / "not selected" (gray) state in a multi-select list.

For applications using such CLI approaches to work, it is important to be able to prefer text emoji over colored emoji.