Question

I do not understand what the following line does in .vimrc

nmap <silent> <leader>v :EditConfig<cr>

It seems that

• nmap mean noremap
• silent seems to mean apparently no beep in Vim
• leader seems to mean the first character in the mode :
• v seems to mean visual mode
• EditConfig should be a command in vim in the mode : (However, it is not.)

What does the line mean in .vimrc?

Answer 1

• nmap means “map a key sequence when in normal mode” (see vim’s docs).
• <silent> tells vim to show no message when this key sequence is used.
• <leader> means the key sequence starts with the character assigned to variable mapleader — a backslash, if no let mapleader = statement has executed yet at the point nmap executes.

And the v is the rest of the key sequence.

So overall this is mapping, in normal mode, a backslash-v key sequence to show no message and execute :EditConfig which is likely a function defined previously in the vimrc to edit configuration files (see for example this vimrc, search in browser for editconfig). :call EditConfig() at the end (as the vimrc file I gave the URL to uses) would be better, I believe.