star option "-7z" ��� run the input or output through a p7zip pipe
It doesn't work.

% star -c -7z -f files.tar.7z files/
star: No such file or directory. Compress: exec of 'p7zip' failed
star: 0 blocks + 0 bytes (total of 0 bytes = 0.00k).
star: Compress program returned error[255].
star: Processed all possible files, despite earlier errors.
[1]    7522 exit 254   star -c -7z -f files.tar.7z files

star should execute '7z' or '7za', not 'p7zip'.

I think, the problem is here:
star-1.5.3/star/buffer.c:1895:        zip_prog = "p7zip";
star-1.5.3/star/buffer.c:2009:        zip_prog = "p7zip";