- write global header
by write_global_extended_header() calling write_tar_entry with
with both sha1 and path == NULL
- write extended header for symlinks, by write_tar_entry() calling
itself with sha1 != NULL and path == NULL
- write a normal blob. In this case both sha1 and path are valid.
After this patch, the first two call sites are modified to write the
header without calling write_tar_entry(). The function is now for
writing blobs only. This simplifies handling when write_tar_entry()
learns about large blobs.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>