I just came across an UTF-8 encoded HTML document that contains the degree Celsius Unicode character "℃" at U+2103. It is rendered silently as plain "C", not as the canonical decomposition "°C". (Test files are attached.)

Is there a workaround? (I mean, one except the obvious of using the canonical decomposition in HTML)?

1. result.png‎ 4.8 kB
2. test.html‎ 0.2 kB ‎
   HTML input file

You could use the text-replace property to do the decomposition, like this:

p { prince-text-replace: '℃' '°C' }