bug#41857: Clarify browser / emacs kill-ring interaction more

[Lars Ingebrigtsen]

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

> (info "(emacs) Primary Selection") says:
>
>        Under X, whenever the region is active (*note Mark::), the text in
>     the region is saved in the primary selection.  This applies regardless
>     of whether the region was made by dragging or clicking the mouse (*note
>     Mouse Commands::), or by keyboard commands (e.g., by typing ‘C-<SPC>’
>     and moving point; *note Setting Mark::).
>
> This isn't clear if it is talking only about actions within emacs, or
> also e.g., actions within a browser.
> Also within a browser we talk about 'highlighting' and 'copying text'.

The Emacs manual talks about Emacs (unless otherwise noted), so I don't
think there's anything to clarify here.

> And, (info "(emacs) Clipboard")'s
>
>        Yank commands, such as ‘C-y’ (‘yank’), also use the clipboard.  If
>     another application “owns” the clipboard—i.e., if you cut or copied text
>     there more recently than your last kill command in Emacs—then Emacs
>     yanks from the clipboard instead of the kill ring.
>
> should mention when this does not apply.

I think it does apply?

> And (info "(emacs) Primary Selection")
>
>        To insert the primary selection into an Emacs buffer, click ‘mouse-2’
>     (‘mouse-yank-primary’) where you want to insert it.  *Note Mouse
>     Commands::.
>
> should mention how to use C-y to insert it if one is not happy being
> forced to use the mouse.

I've added this to Emacs 28.

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(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no