# Umlaut encoding: tar on Mac Lion

I have a tar archive created on an old Unixware machine using ISO8859-1 encoding. When I try to extract it under Macosx Lion, I experience a bit of weirdness with German umlauts. For instance:

I open a terminal.app window with the encoding set to "ISO8859-1" and set my locale like this:

export LANG=de_DE.ISO8859-1
export LC_ALL=de_DE.ISO8859-1


then take a peek at the archive:

dhcp202:Downloads frank$tar tvf backup.tar home/frank x home/frank/ x home/frank/Präferenzen/  note that the "ä" is displayed correctly I then unpack the archive with tar xvf backup.tar home/frank the "ä" is also displayed correctly in the output from tar, but when I list the directory contents, I see: dhcp202:Downloads frank$ ls home/frank
Pr%E4ferenzen


What's up with that?

• What is the result from file -I {filename}? – Bart De Vos Sep 12 '11 at 9:34
• application/x-directory; charset=binary – Frank Brenner Sep 12 '11 at 9:47
• I tried the same archive, same actions on a Linux box and a Unixware7 box, without any trouble. Seems to only happen on the mac. Maybe HFS+ has a problem with ISO8859? – Frank Brenner Sep 12 '11 at 15:21

Filenames on HFS+ are in UTF-8 format, not in any other encoding (well, except MacRoman for old files). You can see code related to that in the kernel source; for example, in getdirentries_callback() in hfs_catalog.c.