Conceal is wrong on subscript \delta

[griffinwxk]

Description

In math mode, if I write _\delta or _{\delta}, the conceal will render as Unicode subscripts "elta", while \d seems to be treated as an macro and is hidden. As far as I know there is a Unicode character for subscript delta. Other greek letters seem fine (for the ones I use).

Steps to reproduce

Just write _\delta or put \delta in any part of a subscript enclosed by braces _{}, in math mode of course.

Expected behavior

Either concealed with a Unicode subscript delta, or at least render \delta as plain Unicode delta.

Actual behavior

It's rendered as subscript "elta" with "\d" part hidden

Do you use a latexmkrc file?

No

VimtexInfo

It should be a simple syntax file bug so VimtexInfo shouldn't matter here.

[lervag]

Sorry, but it seems subscript delta does not exist. At least, I can't find it. I've searched e.g. here.

I can confirm the problem, though. I believe the latest patch at least improves slightly.

[griffinwxk]

Yes you are right about subscript delta. My bad (I have some font config file that I looked up wrong). I just updated and it works fine now (normal delta works for me)! Thank you!

[lervag]

No problem; thanks for noticing and reporting!