bug#27996: open-dribble-file docstring improvement

[Lars Ingebrigtsen]

積丹尼 Dan Jacobson <jidanni@jidanni.org> writes:

> open-dribble-file is an interactive built-in function in ‘C source code’.
>
>> Start writing all keyboard characters to a dribble file called FILE.
>> If FILE is nil, close any open dribble file.
>> The file will be closed when Emacs exits.
>
> On the last line I would say
>
> < Else the file will be closed when Emacs exits.
>
> as some readers wouldn't notice the second line as that is just talking
> about parameters.
>
> Also mention how often it is written. Every keystroke? Every newline?

I've now clarified these two things.

> Also when one does C-x C-s etc.

But not that thing, because it's superfluous.

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