bug#32950: 27.0.50; Strange display bug in *Help* buffer

[Eli Zaretskii]

tags 32950 notabug
thanks

> From: Filipp Gunbin <fgunbin@fastmail.fm>
> Date: Fri, 05 Oct 2018 21:52:15 +0300
> 
> emacs -Q
> C-h f proced-sort RET
> C-x o (go to newly created *Help* buffer)
> TAB TAB (to move to `proced-sort' link)
> RET (to go to that link)
> 
> Now the screen looks like in the screenshot attached.  It's Terminal app
> on macOS 10.13.6, if that matters.
> 
> It looks like a new window is created, with that black line instead of a
> usual separator.  But it's still the same window.
> 
> Maybe it has to do with the fact that help buffer for `proced-sort'
> contains link to the same function (or similarly name variable).

Yes.  This is the intended behavior.  Go to that black line and type
"M-x describe-text-properties RET": you will see what it tries to do.
Also try the same on a GUI frame.