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From: Stefan Huchler <stefan.huchler@mail.de>
Newsgroups: gmane.emacs.help
Subject: special-mode buffer changes to fundamental when modified
Date: Thu, 20 Oct 2016 04:25:40 +0200
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I try something like that:


(define-derived-mode foo-mode special-mode "foo"
  
  (with-current-buffer-window "*foo*" nil nil
   (print (concat "...:\n"
   		  (substitute-command-keys
   		   "\\{foo-mode-map}") ))
   ) 
  )

but then its no special mode buffer anymore, and it
overwrites my keymaps. Without the with-current-buffer-window macro it
works it supposed to be but the buffer is empty.

I tried I think most with- macros and nothing worked, not very obvious
for me how to write stuff in a special buffer.