Re: Fedora 40 emacs clipboard appending

[Eli Zaretskii <eliz@gnu.org>]

> From: Neal Becker <ndbecker2@gmail.com>
> Date: Sun, 28 Apr 2024 16:56:22 -0400
> 
> Po Lu wrote:
> 
> > Ken Goldman <kgoldman@us.ibm.com> writes:
> > 
> >> My environment is emacs on Fedora 40 in a VNC window, the vnc client
> >> is Windows 11.
> >>
> >> When I copy-region-as-kill, it appends to the clipboard vnc uses, so
> >> paste in Windows gets a long history.
> >>
> >> All works for windows other than emacs, and it only fails when I paste
> >> to Windows.
> >>
> >> I know that there are many Linux and emacs clipboards, and something
> >> changed with Fedora 40.
> >>
> >> Any hints?
> > 
> > Fedora moved to installing the PGTK configuration of Emacs by default,
> > which isn't designed for X servers, of which your VNC server probably is
> > one.  You should either reinstall a different package (emacs-x11?) or
> > build Emacs from source.
> rpm -qa emacs*
> emacs-filesystem-29.3-5.fc40.noarch
> emacs-gtk+x11-29.3-5.fc40.x86_64 <<< This one
> emacs-common-29.3-5.fc40.x86_64
> emacs-29.3-5.fc40.x86_64

Are you sure the OP has the same version installed?

In any case, try to see what happens when you call kill-new instead of
copy-region-as-kill: if kill-new sets the clipboard instead of
appending, then the problem is that somehow Emacs thinks the previous
command was also kill-region.  If kill-new also appends, then I
suggest to step with Edebug through kill-new and see what's going on
there.  Perhaps there's some customization which causes this, or maybe
interprogram-cut-function does something unusual in this case.