xantronix/Archive-Tar-Builder — pull request #1 by bk2204 (2014-12-06 18:19:42+00:00)
Title: Add pax extensions for long filename support.

The pax (POSIX) extensions are more portable than GNU LongLink headers.
Add a posix_extensions value that encodes these long filenames as pax
extended headers (type 'x'). Enhance the tests to test this code.

The code would need a small amount of refactoring to support both types of headers at the same time, so I avoided this for the moment.