bug#33477: 24.4; Eshell history/lastdir file symlinks not followed

[Philip Hudson]

Expanding on bug #33460 (see below), predictably enough, the same
issue applies to eshell's "lastdir" file too.

The attached patch provides the same fix, again using function
`file-truename'. It supplants my previous patch, which should be
discarded. So I guess bug #33640 should be closed now.




In GNU Emacs 24.4.1 (x86_64-pc-linux-gnu, GTK+ Version 3.14.5)
of 2017-09-12 on hullmann, modified by Debian
Windowing system distributor `The X.Org Foundation', version 11.0.11604000
System Description: LMDE 2 Betsy

---------- Forwarded message ---------
From: Philip Hudson <phil.hudson@iname.com>
Date: Wed, 21 Nov 2018 at 23:09
Subject: 24.4; Eshell histfile symlinks not followed
To: <bug-gnu-emacs@gnu.org>


If the file named by the value of option `eshell-history-file-name' is
a symbolic link, then it will be replaced and overwritten instead. It
should be dereferenced (followed) first, and its target file should be
replaced and overwritten.

The attached patch uses function `file-truename' to fix this. The
patch was made using source cloned from git savannah HEAD today, which
I think is version 26.1.90, based on ChangeLog.3 in the cloned repo.





-- 
Phil Hudson                  http://hudson-it.ddns.net
Pretty Good Privacy (PGP) ID: 0x4E482F85

eshellResolveHistAndDirsFile.patch
Description: Text Data