Neovide: Iosevka ligatures messed up

[Kethku]

Looks like our handling of iosevka is wrong.

1. Determine if this issue is upstream using the swash testing app
2. Do some investigation about how ligatures are formed with iosevka
3. Take this learning and adjust the glyph positioning system to handle this edge case

[PyGamer0]

https://github.com/be5invis/Iosevka/issues/1007#issuecomment-842871090

Pretty sure this would be of help

[mjoork]

Both Iosevka & Iosevka Term TTF v7.2.4 ligatures display perfectly on my machine.

[mjoork]

On the other hand, I am having a different kind of problem with Iosevka Super TTC downloads.
~All~ apps on Windows see Iosevka properly, except for Neovide. Neovide uses the super-light weight. It is understandable, because the first font in the Super TTC is the lightest one.

Perhaps this is because of the way underlying lib handles fonts? It doesn't yet understand TTC?

EDIT: Actually, I lied. In Control Panel > Fonts, Super TTC are also very thin

... vs normal TTF download.

Maybe this isn't a Neovide issue after all... but I will leave it here for people, just in case.

I can't stop getting surprised. Only Super TTC download doesn't display in proper weight for some reason. TTC download works just fine.

TTC download separates font into collections by weight (so perhaps other font properties don't work in _these_ TTCs, like italics).

[PyGamer0]

maybe the problem is i am using a custom build?

[PyGamer0]

@mjoork is that the latest version???

[mjoork]

@PyGamer0 Why yes, Iosevka 7.2.4 and Neovide 0.5.0. Perhaps I wasn't clear enough... latest _release_.

EDIT: Actually, Iosevka got updated just 23 minutes ago, now latest is 7.2.5.

[mjoork]

Downloaded pre-release 0.7.0 just now and here's how it looks like. Renders perfect ligatures.

The only thing that bothers me is the missing Windows logo. This is not a big deal, but why would it suddenly disappear?

EDIT: After closer inspection, it seems like rendering of ligatures in 0.5.0 was a bit better, because the | + > ligature's bar is lower in 0.7.0, which creates an unpleasent imperfection in vertical alignment. I wonder if someone would even notice it tho. (Given how much ligatures jitter anyway on some sizes in _every_ editor.)

EDIT: I take back my words. I don't know whether it is better and I am sorry for creating all this noise. I will stop. Such an artifact is observable at font size of 24pt. At 60pt the difference is almost invisible, and also at 12pt, where you can't even see that one pixel offset, so one can ignore it.

[PyGamer0]

@mjoork That release is old; neovide has updated a lot since then, try getting a build from here

[Kethku]

We're working on newer releases but there's some bugs that should be fixed first

[mjoork]

@Kethku, @PyGamer0, I see, I will try it. Thank you for being nice to me btw 😊

[mjoork]

Fira Code ligatures display fine

Cascadia Code ligatures display fine too

Iosevka ligatures don't display at all, is there some kind of guard added to not display them for now?