[Bug-tar] Stripping leading ../

[Toby Peterson]

I'm currently maintaining tar here at Apple, and I have a question 
about the behavior of tar. In 1.13.25, if a filename such as '../file' 
was specified without the -P option, it would give a warning like 
"Member names contain `..'", but it wouldn't actually do anything.

In 1.14, the warning is "Removing leading `../' from member names", and 
it does just that. This causes things to be compressed/extracted into 
unexpected locations!

Anyway, I'm simply wondering if this is expected behavior. I'm probably 
going to modify our build system to specify -P, but I'd like some 
confirmation that this is correct.

Thanks in advance.

Toby Peterson
Core OS
Apple Computer, Inc.