Smart window resizing with splits in MacVim

Question

I\'m using the latest MacVim. Is there any way to have it so if I open MacVim without a file or with only one file, it sets the window width to n characters? Then if I do a

Answer 1

I realized that my first post modified window height, not width. Here is what I meant:

Here's a quick solution I came up with, but it's not perfect. The function counts the number of open windows and then sets the window width to original_width * num_windows. The autocommands call the function when Vim starts, and whenever a new window is opened. You can change the default window width (80) to suit your needs.

function! SmartWidth( width )
    let num_wins = 0
    windo let num_wins+=1
    sil exe "set columns=" . num_wins * a:width
    sil exe "normal! \="
endfunction

autocmd VimEnter * call SmartWidth(80)
autocmd WinEnter * call SmartWidth(80)

This works in the basic case, but does not distinguish between horizontal and vertical splits. I don't know how to do that!