strformat fmt or & when contains escaped bracket {{ breaks syntax highlighting of following code

[kunitoki]

If i remove the escaped bracket everything goes back to normal.

[dwhall]

This might be related. Or, at the very least, provides another unittest. This snippet loses colorization in vscode at let dim:

proc renderField(outf, device, peripheral, registerName, register, field) =
  stderr.write(
    &"Warning: field {peripheral.getElement(\"name\").value}.{register.getElement(\"name\").value}.{field.getElement(\"name\").value} has derivedFrom attribute, which is not yet supported.\p"
  )
  if isDimensioned:
    let dim = parseAnyInt(field.getElement("dim").value)
    let dimIncrement = parseAnyInt(field.getElement("dimIncrement").value)

I trimmed this snippet to the minimum that exhibited the issue. Therefore, some variables may not have a declaration.

[kunitoki]

Yeah seems like we don't handle escapes inside the variable usage {} like &"{func("")}“ i can try to fix this as well