How can I show hidden files (starting with period) in NERDTree?

Press I (Shift+i) to toggle hidden files in the NERDTree explorer window.

To enable this behavior by default, add this line to your .vimrc file:

let NERDTreeShowHidden=1

For more detail, access the NERDTree help file :help NERD_tree.txt and search for "hidden".

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