The section "20.6.1 How display-buffer works" of the Emacs manual has an
example wich creates a malformed alist, whose first element is a string
instead of a list. This value is used to customize display-buffer-alist.

In other sections of the manual, like "20.6.2 Displaying non-editable
buffers.", the alist is correctly formed.

The attachment is a patch with the fix.

Huge thanks for all your work :)
¡Abrazos! Pedro.


In GNU Emacs 29.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 
3.24.30, cairo version 1.17.4)
  of 2021-10-14 built on pedro-latitude5411
Repository revision: 8785d70601c5ef02f20604dc3cd85d6c73d7aef7
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 
11.0.12013000
System Description: Manjaro Linux