bug#46508: 27.1; Emacs doesn't like ⿰

[Ben Bullock <benkasminbullock@gmail.com>]

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On Mon, 15 Feb 2021 at 17:23, Andreas Schwab <schwab@linux-m68k.org> wrote:

> What is the value of (frame-parameter nil 'font-backend)?
>

I ran this in *scratch*:

(message "%s" (frame-parameter nil 'font-backend))

and it says

(ftcrhb x)


> Does it help to run (set-frame-parameter nil 'font-backend (remove 'x
> (frame-parameter nil 'font-backend)))?
>

I reinstalled google-fonts using

pkg install google-fonts

as su (root) followed by

xset fp rehash

This caused the problem to occur again and emacs -Q stalled completely. I
then restarted emacs with emacs -Q without opening the problem file (which
contains a single ⿰). In the new Emacs window I copy-pasted the above code
and ran 'eval-buffer' then I used C-x C-f to load the file containing the ⿰
single character. I then started typing this email, and it is still unable
to load the file containing the ⿰ even as I am typing now. It finally
loaded after several minutes, but the ⿰ character is not displayed, instead
there is a box with 2FF0 in it.

Here is a screenshot if it helps:

https://imgur.com/a/Cz99NnQ

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