Unable to create, rename, duplicate files

[fcsonline]

First, of all, thanks for this awesome plugin!! 👏

Since this commit 0e71462 I'm unable to create, rename or duplicate files with NerdTree. I get this error message:

Error detected while processing function nerdtree#ui_glue#invokeKeyMap
NERDTreeCopyNode:                              
E117: Unknown function: trim                                                                                                                                                 
E15: Invalid expression: trim(input(prompt, currentNode.path.str(), 'file'))                                                                                                                                                                                                            
E121: Undefined variable: newNodePath                                                                                                                                        
E15: Invalid expression: newNodePath !=# '

If I pick the previous commit it works as expected.

Self-Diagnosis

I think that since the mentioned commit, the code uses a trim function that is not available in that context.

Environment

• Operating System: Ubuntu 18.
• Vim/Neovim version :version: Vim 8.0
• NERDTree version, found on first line of quickhelp ?: 6.10.13
• Are you using any of these NERDTree-dependent plugins? Nope
• Provide a minimal .vimrc file that will reproduce the issue.

call plug#begin('~/.vim/plugged')                                                                                                                                        
Plug 'preservim/nerdtree'   
call plug#end()

Steps to Reproduce the Issue

1. Open nerdtree
2. Try to copy, rename or create files
3. You get the error

Expected Result

The file is duplicate, rename or create

[fcsonline]

Thanks!

[PhilRunninger]

You're welcome. Who could have imagined trim() was added so recently?