Continous window resize in vim.

resizewindow.vim

function! PrintMode(mode)
	if &showmode
		echoh ModeMsg | echo a:mode | echohl None
		redraw
	endif
endfunction

function! ResizeMode()
	while 1
		call PrintMode('-- RESIZE --')
		try
			let key = nr2char(getchar())
			if index(['>', '<', '+', '-', '=', 'h', 'l', 'j', 'k'], key) < 0
				throw ''
			endif
			execute "normal! \<C-w>" . key
			redraw
		catch
			break
		endtry
	endwhile
	call PrintMode('')
endfunction

nnoremap <silent> <C-w>> <C-w>>:call ResizeMode()<CR>
nnoremap <silent> <C-w>< <C-w><:call ResizeMode()<CR>
nnoremap <silent> <C-w>- <C-w>-:call ResizeMode()<CR>
nnoremap <silent> <C-w>+ <C-w>+:call ResizeMode()<CR>