sstephenson/rbenv — pull request #529 by kou1okada (2014-01-09 06:34:47+00:00)
Title: Response enhancement for in the case of the working directory under the UNC path.

finding_local_version_file is extremely slow, when working directory is under the UNC path.
Because //host/.rbenv-version and //.rbenv-version do not exist, but testing them is so slow.
It's the reason to make a serious delay of the response, when the Ruby runs with a current working directory under the UNC path under Cygwin environment.

A response of before applying this patch.
//somehost/somedir $ time ruby -e "exit"

real 0m13.922s
user 0m0.168s
sys 0m0.287s

A response of after applying this patch.
//somehost/somedir $ time ruby -e "exit"

real 0m0.721s
user 0m0.153s
sys 0m0.319s