How to add plugins like undo tree?

[brijesh-amin]

How to add plugins like https://github.com/mbbill/undotree which use

mkdir -p ~/.vim/pack/mbbill/start
cd ~/.vim/pack/mbbill/start
git clone https://github.com/mbbill/undotree.git
vim -u NONE -c "helptags undotree/doc" -c q

steps for installation

[abeldekat]

Those steps describe the installation when only using Vim's built-in package manager.

Quoting:

Use whatever plug-in manager to pull the master branch. I've included 2 examples of the most used:

Vundle: Plugin 'mbbill/undotree'
Vim-Plug: Plug 'mbbill/undotree'
Packer: use 'mbbill/undotree'