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[rzvxa]

Description of Changes

The original author of this PR is @hsnks100 on #1328, I've just added some documentation and made dynamic binding instead of using just a setting variable.
This PR will get merged with a co-author tag to give credit to the author of the initial PR.

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New Version Info

Adds a new option and binding for toggling line numbers for files.

[rzvxa]

@alerque Hi, By any chance is it possible for you to review this PR? I think it's a sweet addition to the NERDTree, Line counting uses the wc command whenever possible. If not it will fall back to the FIND command on Windows otherwise it will count up to the first 20000 lines using Vimscript implementation.

[isaiah]

The keybinding override the navigation shortcut to move the cursor to the bottom, which is very important, is it possible to disable the keybinding?
https://github.com/preservim/nerdtree/pull/1384/files#diff-19392c14a742ab8948180b2b6a82e99321d1722b618ba00d3ac5dc805e8b0702R134

[rzvxa]

@isaiah Yeah, you should be able to rebind this key to anything you desire using g:NERDTreeMapToggleFileLines.
If you have any non-clashing alternative key bind please create an issue, nothing is stopping us from remapping this default key bind to something more reliable.