[PeterisP]

Doesn't work with accented latin alphabet characters ("ü𝕓𝕖𝕣") - is it a fundamental restriction of the styled unicode charset or a mapping issue? Seems like it should be supported but would need a transition from precomposed characters to the equivalent combination of letter + diacritic.

[Veedrac]

It's not a fundamental restriction in the character set; "𝕦̈𝕓𝕖𝕣" is valid.

[sebazzz]

It does not work with numbers either, though that can be worked around a little bit by using the number-in-circle variants.