Question

I am working with split windows in vim, but I am having trouble navigating and resizing split windows.

I have added these mappings to my .vimrc text file:

nmap <silent> <A-Up> :wincmd k<CR>
nmap <silent> <A-Down> :wincmd j<CR>
nmap <silent> <A-Left> :wincmd h<CR>
nmap <silent> <A-Right> :wincmd l<CR>

But still, when pressing <A-Left> it does not move window. Also I am using <C-w> +, but the windows do not resize! I also tried <C-w> <, but it resizes like 1 pixel at a time! Is there any faster way to resize split windows?

Answer 1

10 Ctrl-W+ increases the window size by 10 lines. To resize all Windows to the same size, you can use CTRL-W = and to increase a window to its maximum size, use Ctrl-W _.

To resize in different steps, you can create maps that will adjust the window size differently. For example to increase the window size by a factor of 1.5 and decrease the window size by 0.67, you can map this:

 nnoremap <silent> <Leader>+ :exe "resize " . (winheight(0) * 3/2)<CR>
 nnoremap <silent> <Leader>- :exe "resize " . (winheight(0) * 2/3)<CR>

Alternatively you can use the :resize command to change the height of the window, to change the window width, use the :vertical modifier. So to resize by 10 lines, use:

:res +10
:res -10

as for navigation try

 nnoremap <C-h> <C-w>h
 nnoremap <C-j> <C-w>j
 nnoremap <C-k> <C-w>k
 nnoremap <C-l> <C-w>l