bug#34969: 26.2; `emacs -Q` unable to copy \200's eight-bit detail buffer

[Eli Zaretskii]

> From: Van L <van@scratch.space>
> Date: Sun, 24 Mar 2019 14:39:56 +1100
> 
> : 6
> : [has problem the third time]
> : [on XQuartz]
> : [~/bin/emacs26.2r1 links to \200nfs\200/build/emacs26.2-rc1/bin/emacs-26.2]
> : GNU Emacs 26.2 (build 1, x86_64-apple-darwin15.6.0, X toolkit)
> : of 2019-03-21
> 
> : 7 `emacs -Q`
> : [this is the first time for `emacs -Q]
> : [has problem the forth time run for thise version]
> : [on XQuartz]
> : [~/bin/emacs26.2r1 links to \200nfs\200/build/emacs26.2-rc1/bin/emacs-26.2]
> : GNU Emacs 26.2 (build 1, x86_64-apple-darwin15.6.0, X toolkit)
> : of 2019-03-21

Does "the forth time" mean do all the steps 4 times before the problem
happens?  Or does it mean repeat only some of the steps 4 times?

IOW, can you please show the transcript of repeated steps in these
situations?

What happens if you set interprogram-cut-function and
interprogram-paste-function to nil?

(And why do your symlink targets include \200 characters?)