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Buffer and ondisk file contents can often differ

From: Leo Liu
Subject: Buffer and ondisk file contents can often differ
Date: Thu, 26 Jun 2014 08:45:18 +0800
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (CentOS 6.5)

Since moving to 24.3.91 and 24.4.50 I have seen this bug a dozen times
but I don't know how to reproduce it. It happens sometimes so I wonder
if anyone else has seen it.

For example, I changed `defvar' to `defconst' in a buffer and C-x C-s.
Everything was fine until I diff'd the file to discover it was still
using `defvar'.

This just happened when I sent this patch

Eventually I reverted the buffer and edited again which succeeded.

BTW, the bug can happen with or without auto-revert-use-notify.


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