bug#42865: 28.0.50; Add new 'copy-region-quietly' defcustom

[Lars Ingebrigtsen]

Juri Linkov <juri@linkov.net> writes:

> This looks like the existing function 'user-error' that
> doesn't enter the debugger when 'debug-on-error' is t.
> Does the name 'user-message' make more sense?

Yeah, that makes sense.

> But the problem is that it would be a huge endeavor
> to replace all 'message' calls with a new function call.

Well, we wouldn't want to do that -- we'd only replace the ones that
somebody thinks outputs a superfluous message.

> So maybe a better route is to add a list of ignored messages like
> 'debug-ignored-errors' contains a list of regexps that match messages
> to ignore.
>
> Then this will disable display of the copy-region message:
>
>   (add-to-list 'ignored-messages "^Saved text")

I'm not in favour of that -- different code can output the same message,
and it may be superfluous only from a specific function. 

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   bloggy blog: http://lars.ingebrigtsen.no