Font Questions: Math font glyphs not found with default math function "dotless"

Questions
1

Hello typst Forum,

I have some difficulties on my quest to properly use a different math font.

#show math.equation: set text(font: "xcharter math")

This works fine for most symbols, but I am running into issues on certian glyphs and would love some information/help that I might be missing. I prepared a working(ish) example.

#set page("a6")
*default:*

$dotless.i dotless.j bold(dotless.i) bold(dotless.j)$


*with custom math font: XCharter Math*

_there is also an "xcharter-math" (the dash is important), which is the bold variant, but doesnt work in tandem automagically_

#show math.equation: set text(font: "xcharter math")

$dotless.i dotless.j bold(dotless.i) bold(dotless.j)$

#show math.equation: set text(font: "xcharter-math")

$dotless.i dotless.j bold(dotless.i) bold(dotless.j)$


*direct unicode calls kind of work but not really*

#[
  #set text(font: "xcharter math")
  \u{1D6A4} \u{1D6A5} \u{1D6A4} \u{1D6A5} \
  *\u{1D6A4} \u{1D6A5} \u{1D6A4} \u{1D6A5}*
]

#[
  #set text(font: "xcharter-math")
  \u{1D6A4} \u{1D6A5} \u{1D6A4} \u{1D6A5}
]

*Now a silly workaround*

#let dli() = {
  set text(font: "xcharter math")
  "\u{1D6A4}"
}
#let dlj() = {
  set text(font: "xcharter math")
  "\u{1D6A5}"
}
#let bdli() = {
  set text(font: "xcharter-math")
  "\u{1D6A4}"
}
#let bdlj() = {
  set text(font: "xcharter-math")
  "\u{1D6A5}"
}

$dli() dlj() bdli() bdlj()$

The output is in the attached doc.

This workaround works only for the mentioned font obviously. For many docs I prefer sans fonts, and opt for “fira math” as math font. There too $dotless.i$ does not produce an expected outcome, but I would hate to always use and adapt the code above.
testign.pdf (24.5 KB)