Special Unicode glyphs

[Pepsiman-12]

What are the Unicode codepoints of these 2 weird looking glyphs (Both halves of the Arabic lam alif ligature)?
And also, do these glyphs have a stylistic set?

[DHowett]

It would be helpful if you could copy/paste them as actual text here, rather than a screenshot 🙂

[Pepsiman-12]

The text in the screenshot says لآ لإ لأ لا.

I think these glyphs are rendered in some specific stylistic set, right?

[lhecker]

@DHowett can correct me on that, but this appears to be the Cascadia Code style for Arabic. The problem is that we assign 1 cell for each grapheme in the ل glyph cluster. It's supposed to overlap like this (a screenshot from Chromium):

If you compare this with Windows Terminal, you can see where the rendering is coming from:

This is a difficult problem because there's no Unicode specification yet for how to handle widths of Arabic clusters. I checked the Rust unicode-rs crate (maintained by Manishearth who works on i18n at Google (= way more knowledgeable than us, I'm sure)), and found that it assigns 1 column to the glyph cluster.

As such I'll consider this a bug in our implementation. Let's see if I can do something about that...