From 05bf9c54a827e48b2b576488f5170a3490b5180e Mon Sep 17 00:00:00 2001
From: Junio C Hamano
Due to the immutable nature of git objects, old objects can be archived into shared, read-only directories. This variable - specifies a ":" separated list of git object directories which - can be used to search for git objects. New objects will not be - written to these directories. + specifies a ":" separated (on Windows ";" separated) list + of git object directories which can be used to search for git + objects. New objects will not be written to these directories.