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[Fix] closing of collapsible directories in NERDTree plugin #432

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@juliuszint juliuszint commented Jul 16, 2022

The NERDTree plugin will under some conditions fail to close a collapisble directory with the error message: "cannot close tree root". This commit replaces the traversing logic for collapsible directories when closing with the latest code from NERDTree.

To reproduce this error use g:NERDTreeCascadeSingleChildDir=0 and g:NERDTreeCascadeOpenSingleChildDir=1. Then the following directory tree:

dir-a
    dir-b
        dir-c
dir-d

Go over dir-c and press "x" to close this node.

Requirements (please check off with 'x')

The NERDTree plugin will under some conditions fail to close a
collapisble directory with the error message: "cannot close tree root".
This commit replaces the traversing logic for collapsible directories
when closing with the latest code from NERDTree.

To reproduce this error use 'g:NERDTreeCascadeSingleChildDir=0' and
'g:NERDTreeCascadeOpenSingleChildDir=1'. Then the following dir tree:

dir-a
    dir-b
        dir-c
dir-d

Go over dir-c and press "x" to close this node.
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