Re: newline cache

[Richard Stallman]

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    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
    empty-handed.

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
USA
www.fsf.org  www.gnu.org
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