bug#10489: 24.0.92; dired-do-copy may create infinite directory hierarchy

[Michael Albinus]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

>>> E.g. (equal (file-attributes file1) (file-attributes file2))?
>
>> We need at least the `file-truename' call. 
>
>> (equal (file-attributes (file-truename (expand-file-name file1)))
>>        (file-attributes (file-truename (expand-file-name file2))))))
>
> Why??!?!

albinus@slbhn1:[1187] touch 1
albinus@slbhn1:[1188] ln -s 1 2
albinus@slbhn1:[1189] ll 1 2
-rw-r--r-- 1 albinus smc3 197 Jan 16 16:22 1
lrwxrwxrwx 1 albinus smc3   1 Jan 16 16:22 2 -> 1

(file-attributes "/home/albinus/1") =>
(nil 1 441 823 (20244 16570) (20244 16570) (20244 16570) 197 "-rw-r--r--" nil 
2708784 19)

(file-attributes "/home/albinus/2") =>
("1" 1 441 823 (20244 16577) (20244 16577) (20244 16577) 1 "lrwxrwxrwx" nil 
2727905 19)

>         Stefan

Best regards, Michael.