Firacode: Ligatures `{|}` and `[|]` render incorrectly

[blucell]

After adding {|, |}, [|, and |] at release 1.205, ligatures {|} and [|] render incorrectly as per the following screenshot.

[tonsky]

yeah... where do those come from, though? What language?

[blucell]

I think LaTeX can have {|} in some cases, but the main issue here—I believe—is that this is not the way people expect it to look.

[derekjones]

This also affects some regex patterns. For example, splitting a string by commas or pipes /[,|\|]/

[kiprobinson]

Related: https://github.com/tonsky/FiraCode/issues/643