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From: martin rudalics <rudalics@gmx.at>
Newsgroups: gmane.emacs.help
Subject: Re: file/local variables (and auctex?)
Date: Thu, 12 Apr 2007 10:34:21 +0200
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 > I actually got this very error when copying the lines above to a file
 > and opening it.

Indeed - I was confused because the OP didn't mention it the first time.
It's due to the "$" in

	  (let ((suffix
		 (concat
		  (regexp-quote (buffer-substring (point)
						  (line-end-position)))
		  "$"))

and I stand corrected.  Maybe we should write

	  (let ((suffix
		 (concat
		  (regexp-quote (buffer-substring (point)
						  (line-end-position)))
		  "[ \t]*$"))

instead.