GNU bug report logs - #33458
27.0.50; dired loses position when reverted from outside place

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From: martin rudalics <rudalics <at> gmx.at>
To: Juri Linkov <juri <at> linkov.net>
Cc: Stephen Berman <stephen.berman <at> gmx.net>, 33458 <at> debbugs.gnu.org, v88m <at> posteo.net
Subject: bug#33458: 27.0.50; dired loses position when reverted from outside place
Date: Tue, 27 Nov 2018 09:08:39 +0100

> Maybe marker-position should allow to call a function?
> For example, like 'isearch-push-state-function' remembers
> an additional state as a lambda, and when an old state is
> restored, a pop-fun lambda is called.  The function that
> restores the buffer in the window could be the same.

The problem we face here is almost exclusively restricted to reverting
buffers and 'marker-position' is too heavily used as to be affected by
that.  Now, if we talk about dired buffers only, they have a very
helpful restriction that invariably permeates all file systems: The
file names in a directory must be unique.  So if a marker is on the
line of a file name it can quite easily return to that name after
reversal (provided the file still exists).  A similar argument should
hold for non-file visiting buffers like Buffer List buffers.  Finally,
in quite a number of cases 'auto-revert-tail-mode' should take care of
markers in the unchanged initial part of a file.  Do we have many
other auto-reverted buffers?

martin

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