bug#55870: GNU Emacs 26.3, Select All(C-x h) does not work

[Bruce]

(default-value 'selection-coding-system)

reports: nil


What functions do emacs call after I press Meta-w?

It seems they copy a lot of junks to the memory

(copying one 424KByte file occupies 5.9GByte system memory)

On 2022/7/16 下午1:37, Eli Zaretskii wrote:
> > Cc: larsi@gnus.org, 55870@debbugs.gnu.org
> > From: Bruce <brucelam1982pi@anche.no>
> > Date: Sat, 16 Jul 2022 08:15:55 +0800
> >
> > window-system is a variable defined in ‘C source code’.
> > Its value is ‘x’
> > It is a terminal-local variable; global value is the same.
> >
> > selection-coding-system is a variable defined in ‘select.el’.
> > Its value is nil
> Thanks.  And what does the below report?
>
>    M-: (default-value 'selection-coding-system) RET