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created 2009 · complexity basic · author Nsg · version 7.0
When reading text, it can be useful to make a wide window, then split it vertically so two consecutive pages of text can be seen in the left and right windows.
With a large monitor, you might enter
:set columns=160 to make the screen 160 columns wide. This tip can then be used to split the screen to show two windows, with the '
scrollbind' option set so that scrolling one window also scrolls the other window.
Enter the following command (or put in your vimrc):
:noremap <silent> <Leader>vs :<C-u>let @z=&so<CR>:set so=0 noscb<CR>:bo vs<CR>Ljzt:setl scb<CR><C-w>p:setl scb<CR>:let &so=@z<CR>
With the default leader, you can now press
\vs to vertically split the screen into two windows with '
scrollbind' set. To display only a single window, press Ctrl-W then
The mapping performs these operations:
:<C-u> " clear command line (if in visual mode) let @z=&so " save scrolloff in register z :set so=0 noscb " set scrolloff to 0 and clear scrollbind :bo vs " split window vertically, new window on right Ljzt " jump to bottom of window + 1, scroll to top :setl scb " setlocal scrollbind in right window <C-w>p " jump to previous window :setl scb " setlocal scrollbind in left window :let &so=@z " restore scrolloff
The mapping clears '
scrollbind' before manipulating the windows so that the position of the second window can be adjusted without scrolling the first window. Setting '
scrolloff' to 0 allows the cursor to be positioned at the bottom of the screen (with command
- If the cursor is in the last line when the mapping is executed, the mapping fails because
jcannot move the cursor down (and the remaining commands are not executed).
- Register z is changed.
I put this into a function:
noremap <silent> <Leader>ac :exe AddColumn()<CR> function! AddColumn() exe "norm \<C-u>" let @z=&so set noscb so=0 bo vs exe "norm \<PageDown>" setl scrollbind wincmd p setl scrollbind let &so=@z endfunction
Except when I try to scroll one of the buffer windows by one line or more. In that case, the line-difference between each buffer is reduced to zero. Curiously, this works perfectly when done by hand in the command prompt.
I have read that that line-difference is meant for 2 different files. However, we are using the same file, but in two different windows. Then, how do I keep that line difference valid between the windows on_scroll?