Nerdtree ^G before folder and file names OSX terminal vim

See the associated GitHub issue: the issue is that Mac's default vim doesn't have the conceal feature, and NERDTree doesn't do well in this case.

To fix it you can install Homebrew's vim, that is compiled with this feature, with brew install vim

Put let g:NERDTreeNodeDelimiter = "\u00a0" in your .vimrc