How to map keystrokes to a command?

Question

How to map keystrokes to a command in vim?

For example, I would like to create a custom command Cmt, and I could use it to comment out lines 10-20 like this: :10,20Cmt

I have tried something like :command -range Cmt <line1>gg O ... but it didn't work.

Tommy A · Accepted Answer · 2016-06-28 04:09:24Z

You want to use the :normal! command:

command -range Cmt normal! <line1>ggO

Commands take everything to the right of the name (Cmt) and runs it as an ex command:

command -nargs=1 LetX let g:x = '<args>'

Substitutions are made on the command before it's executed. So, running 10Cmt will execute :normal! 10ggO.

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