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From: moncam!paul@UUNET.UU.NET (Paul Hudson)
Newsgroups: gnu.emacs.bug
Subject: Problem with reverting a buffer ...
Message-ID: <8907141502.AA18649@marvin.moncam.uucp>
Date: 14 Jul 89 15:02:17 GMT
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Distribution: gnu
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I give up: after much abortive emacs lisp hackery....

This comes from attempting to change the recent sccs.el package

What happens:

the package does a delta followed by a get on a buffer. This leaves the file on the
disk with modes -r--r--r-- and the contents of the buffer are the file *before* the delta.

Problem: how do I get the contents of the buffer correct without
changing the mode of the file on the disk?

The supplied code went something like ...

	(set-buffer buffer)
	(setq buffer-file-name nil)
	(erase-buffer)
	(insert-file-contents file t)
	(setq buffer-read-only t)

For some reason this leaves the file on the disk in mode -rw-r--r--.
This won't do since a get -e will then bitch.

Revert-buffer does almost what I want but I can't make it do it quite right.

Ideas anyone?
Paul Hudson	 MAIL: Monotype ADG, Science Park, Cambridge, CB4 4FQ, UK.
		PHONE: +44 (223) 420018	  EMAIL: paul@moncam.co.uk,
	;"	  FAX: +44 (223) 420911		 ...!ukc!acorn!moncam!paul
 `"";";"        These opinions void where prohibited by law.