Jason Franklin d7cf9a2a98 Fix the drive check in "TreeDirNode._glob()"
This check did not use the proper abstract method to check for a
path separator. It now does.

This fixes a problem with the 'u' macro that I noticed while working
on the fix for using the NERDTree with 'shellslash'.
2017-08-11 10:14:05 -04:00
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