问题
I want to map my NERDTREE toggle to Cmd + space but I don't know what character represents Mac's command key in .vimrc. I searched and found that we can use 'D' to represent cmd key from this link, but it doesn't work. BTW I am using vim from the terminal not MacVim.
回答1:
It is true that <D- maps to command key. You can see it by :help <D-.
However, this will not work in your vim+terminal. It only works in MacVim. See here
The best shot for your intention is to map the combination as hex code, sending to terminal.
Still I will not recommend doing this. command is too important for mac os environment. For example, anyone uses an input method can't map it to command+space.\
Please consider using the usual method here: <leader>.
回答2:
iTerm2 can do this - here I mapped command enter to :wq
回答3:
With IdeaVim you can use: <M-*>
来源：https://stackoverflow.com/questions/40990454/how-to-map-mac-command-key-in-vim