CODEWITHSUNDEEP
vim
Genschman
Genschman

Reputation: 187

Vim and key mapping

I would like to enable or disable mouse support in vim with only one key (in my case F7). It should work in command mode insert mode. I have this in my .virmrc:

  set mouse=
  nnoremap <F7>       :set mouse=a <CR>
  inoremap <F7> <C-o> :set mouse=a  <CR>

but this does not work. I also want to switch cursorline on and off in both modes. For this I have this in my .vimrc

set nocursorline
nnoremap <F2>      :set cursorline!<CR>
inoremap <F2> <C-o>:set cursorline!<CR>

Cursorline works well, mouse support does not. Why?

Upvotes: 0

Views: 280

Answers (1)

Dan Lowe
Dan Lowe

Reputation: 56687

The ! modifier in your cursorline example is why it is working. That tells Vim to toggle or invert the current value. It only works for boolean (true/false) settings.

From :help :set:

:se[t] {option}! or
:se[t] inv{option} Toggle option: Invert value. {not in Vi}

In your mouse case, you'll need something a little more intelligent.

function ToggleMouse()
    if &mouse == 'a'
        set mouse=
        echo 'Mouse mode OFF'
    else
        set mouse=a
        echo 'Mouse mode ON'
    endif
endfunction
nnoremap <F7> :call ToggleMouse()<CR>
inoremap <F7> <C-o>:call ToggleMouse()<CR>

Upvotes: 1

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