Follow-up Comment #10, bug #57618 (project groff):
[comment #9 comment #9:]
> commit 1455bf9af0bd401bec52c4223dbf701152d96935
> Author: G. Branden Robinson <[email protected]>
> Date: Fri Oct 9 01:40:46 2020 +1100
>
> groff_char(7): Clarify NFD discussion.
>
> Clarify that GNU troff (the formatter) requires Unicode special
> character escapes to be in Normalization Form D. Give examples of 3
> ways that work to input "café", and one that doesn't, using a
> non-NFD-compliant Unicode special character escape.
But the example that doesn't work doesn't on a technicality. It's true groff
doesn't recognize “caf\[u00e9]”, but it recognizes "caf\[u00E9]" just
fine. And this is NFC form. (And what preconv emits from Latin-1 input.)
Groff just doesn't seem to be as NF-strict as this passage makes it out to be.
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