[Windows] rename dir failed (E65: illegal back reference) when path contains number

[ZSaberLv0]

Self-Diagnosis

• I have searched the issues for an answer to my question.
• I have reviewed the NERDTree documentation. :h NERDTree
• I have reviewed the Wiki.
• I have searched the web for an answer to my question.

Environment (for bug reports)

• Operating System: Windows gVim
• Vim/Neovim version :echo v:version: 8.1
• NERDTree version, found on 1st line in NERDTree quickhelp ?: latest (e67324f)
• vimrc settings
  • NERDTree variables

  nothing, just install NERDTree

  • Other NERDTree-dependent Plugins
    • jistr/vim-nerdtree-tabs
    • ryanoasis/vim-devicons
    • tiagofumo/vim-nerdtree-syntax-highlight
    • Xuyuanp/nerdtree-git-plugin
    • Others (specify):
  • I've verified the issue occurs with only NERDTree installed.

Steps to Reproduce the Issue

1. navigate to a dir whose path contains number, e.g. C:\path\2\abc\
2. using NERDTree's menu to rename the dir

Current Result (Include screenshots where appropriate.)

Error detected while processing function nerdtree#ui_glue#invokeKeyMap[1]..83[33]..82[3]..<SNR>84_showMenu[2]..56[29]..73[9]..NERDTreeMoveNode:
line   12:
E65: Illegal back reference
E65: Illegal back reference
Error detected while processing function nerdtree#ui_glue#invokeKeyMap[1]..83[33]..82[3]..<SNR>84_showMenu[2]..56[29]..73:
line    9:
E171: Missing :endif
Error detected while processing function nerdtree#ui_glue#invokeKeyMap[1]..83[33]..82[3]..<SNR>84_showMenu[2]..56:
line   29:
E171: Missing :endif
Error detected while processing function nerdtree#ui_glue#invokeKeyMap[1]..83[33]..82:
line    3:
E171: Missing :endif
Error detected while processing function nerdtree#ui_glue#invokeKeyMap[1]..83:
line   33:
E171: Missing :endif

Expected Result

note:

• fail only when rename dir, won't fail when: rename file/add dir/delete dir
• I think the \2 was treated as regexp causing illegal back reference, but I can't find which code caused that