Hello Sorry, there was one thing I forgot to mention which is a requirement for the problem to appear. I have also enabled automatic byte-compilation, using the following line of lisp code: ;; Automatic byte-compilation when starting emacs. (byte-recompile-directory (expand-file-name "~/.emacs.d") 0) A minimal emacs dotfile that demonstrates my described problem is thus the code snippet I gave in the first message combined with the one above. (I am checking that myself right now.) It is when an init.elc has been generated I get this error specifically in Emacs 27. I will attach the error message I get in Emacs and also the stack trace from 'emacs --debug-init', please see the attached file. Eli, yes you guess correctly. invoke "C-x $" with a numeric argument on init.el as a way of testing. On 7/25/21 3:51 PM, Eli Zaretskii wrote: >> From: A M >> Date: Sun, 25 Jul 2021 12:07:07 +0200 >> >> I would like to change the "selective display character" (also called >> "ellipsis", default is "...") to some other character, an arrow >> character would be nice. >> >> Up until Emacs 27, I used the code below in my init.el , it worked just >> great. >> >> ;Change the default selective display ("folding") character "..." to " »". >> (set-display-table-slot standard-display-table >>                         'selective-display (string-to-vector " »")) >> >> With Emacs 27 this no longer works. I have tested by using >> 'selective-display' (C-x $) on my init.el as a simple test, I get the >> default "...". >> Could you help me by providing a working method for Emacs 27? > I cannot reproduce the problem you are reporting: the above works for > me in Emacs 27 (and in Emacs 28). The "..." is replaced with the > arrow character. > > Just to be sure: to test this you invoke "C-x $" with a numeric > argument that determines the column past which you want to have the > ellipsis, yes? > > I suggest to try this in "emacs -Q"; if it works there, there are some > customizations of yours that get in the way. >