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Re: newline cache

From: Richard Stallman
Subject: Re: newline cache
Date: Tue, 22 Apr 2014 01:37:50 -0400

[[[ To any NSA and FBI agents reading my email: please consider    ]]]
[[[ whether defending the US Constitution against all enemies,     ]]]
[[[ foreign or domestic, requires you to follow Snowden's example. ]]]

    I've seen a couple of problems in the current pretest which
    disappeared once I turned off the cache in the Rmail buffer.  I've
    tried to see what does Rmail do that triggers this, but came up

I investigated  what was happening when the bug occurred.
(forward-line 1) moved across an extra newline, down to point-max.
But I don't know how the newline cache works, so I did not try to
study that code.

One possible approach is to write a builtin function to check the newline cache
contents for valid correspondence to the buffer contents.
I would not mind making Rmail run that in a post-command-hook.
Then I could find out which command causes the cache to become incorrect.

But someone else will have to write that builtin function.

Dr Richard Stallman
President, Free Software Foundation
51 Franklin St
Boston MA 02110
www.fsf.org  www.gnu.org
Skype: No way! That's nonfree (freedom-denying) software.
  Use Ekiga or an ordinary phone call.

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