Remapping alt-\ to open the file in vertical split throws error

[rbhanot4739]

Environment

• Operating System: Ubuntu 16.04.5 LTS
• Vim version :NVIM v0.3.2-208-g2841e89:
• NERDTree version 5.0.0:
• NERDTree settings applied in your vimrc, if any:

Process

1. Define these custom key bindings

let g:NERDTreeMapOpenVSplit = '<a-\>'

Current Result

So inside the NERDTree window when I press a-\ I get the following error.

E114: Missing quote: "\")                                                                                                                                        
E116: Invalid arguments for function nerdtree#ui_glue#invokeKeyMap 

Expected Result

I have mapped same key-stroke in normal for creating vsplits and it works fine. So what am i missing here ?

Screenshot(s)

Possible Fix

[PhilRunninger]

Fixed in #948.

[rbhanot4739]

Thank you very much, works like charm !!