Vim映射的含义<A-x-Left><CR>

Question

I have seen this mapping in one vimrc file

  map <A-x-Left> :bprevious<CR>

But I don't understand how to use it.

Answer 1

Me neither. Vim doesn't support key chording, only simple combinations of Ctrl or Alt with another (possibly Shift -ed) key. :help key-notation is the corresponding reference.

What was probably meant is this:

map <A-x><Left> :bprevious<CR>

Which can be triggered by first pressing Alt + X together, followed by ← .

And this should use :noremap ; it makes the mapping immune to remapping and recursion.

Answer 2

<A- is the Alt key, so <Ax-Left> means Alt + x + left arrow. You can read more on key notation in vim's help: :help key-notation .