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bug#29842: 27.0; `dired-change-marks': args should not be optional

From: Stefan Kangas
Subject: bug#29842: 27.0; `dired-change-marks': args should not be optional
Date: Sun, 19 Jan 2020 16:02:45 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux)

close 29842 28.1

Drew Adams <address@hidden> writes:

> Furthermore, the code should perhaps not just call
> `ding' if you hit RET.  Instead of this:
>  (if (or (eq old ?\r) (eq new ?\r))
>      (ding)
>   ...)
> it should perhaps do something like this:
>  (unless (char-displayable-p old)
>    (error "Not a displayable character: `%c'" old))
>  (unless (char-displayable-p new)
>    (error "Not a displayable character: `%c'" new))
> The current code predates the existence of
> `char-displayable-p'.
> (Yes, that's a different bug, but perhaps it can be
> taken care of in the context of this report.  If not,
> don't worry about it.)

Fixed on master in commit e5e31aab9b.

Best regards,
Stefan Kangas

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