bug#41168: Add variable to limit save-interprogram-paste-before-kill by size

[Eli Zaretskii]

> Date: Sun, 10 May 2020 08:56:40 +0000
> From: ndame via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> How about a variable which allows the user to limit the size of data saved on 
> the kill ring? Data larger than
> the limit is not copied.
> 
> save-interprogram-paste-before-kill  itself could specify this limit. If it's 
> not t but a number then it's the limit as
> number of bytes or maybe kilobytes, because I imagine the user sets such a 
> limit to at least a few hundred
> kilobytes or higher.

Sounds like a good idea.  Would you like to propose a patch along
these lines?