bug#33460: 24.4; Eshell histfile symlinks not followed

[Philip Hudson]

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.



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


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

eshellResolveHistFile.patch
Description: Text Data