sstephenson/rbenv — pull request #217 by alecchen (2012-04-23 14:16:54+00:00)
Title: remove "+=" operator in rbenv-rehash to support bash-3.0

The "+=" operator was added in bash-3.1-alpha1.
Could you consider remove it to support older bash versions?

http://lists.gnu.org/archive/html/info-gnu/2005-12/msg00003.html