Support OTF ligatures in text editor

[WoolieWool]

Editor

Resource editor

Description of your feature request

Many modern terminal fonts support ligatures for commonly used multi-character symbols such as !=, ==, <=, >=, ->, ++, /=, >>=, and <|. Would you consider adding support to these in SLADE's text editor?

Mock-up

ligatures shown in a ZScript function in the vim text editor: https://i.imgur.com/zySZJqI.png

[Blue-Shadow]

This is already in: set txed_use_directwrite cvar to true. Restart SLADE.

[sirjuddington]

I think enabling that causes non-TTF fonts not to work unfortunately. Not much I can do as the issue is on Scintilla's end

[WoolieWool]

Confirmed this console command breaks OTF fonts.

[sirjuddington]

Hmm, interestingly enough it seems to work fine with OTF fonts for me (in 3.2.6, Windows 11), what font exactly are you trying to use?