On Tue, Jul 11, 2006 at 01:52:40PM -0500, Tim Chase wrote:
[snip]
>
> Well, after hacking at it on and off for the last day or two,
> trying various ideas, this is one of my uglier hacks and abuses
> of vim's conventions.
>
> function! IncRoman(initial, howmuch)
> " do your own IncRoman stuff here...this
> " just a generic increment
> try
> let l:result = a:initial + a:howmuch
> catch
> let l:result = a:howmuch
> endtry
> return l:result
> endfunction
>
> :noremap <c-a> :<home><right><right><right><right><c-u>let
> howmuch=<end>+1<cr>ciw<c-r>=IncRoman(@-,howmuch)<cr><esc>
>
> This one-liner mapping (in case mailers on either end of things
> ended up breaking that mapping line) seems to work correctly on
> various values that I threw at it. If you try to increment a
> non-number, it will replace it with the increment quantity, which
> seemed reasonable to me. If you don't like the behavior, you can
> change the "catch" clause to return what you prefer (either the
> initial contents, or an empty string would be other good candidates).
>
> It should even be swappable if you have a companion DecRoman
> function with the same sort of call-signature.
>
> It's a horrible abuse of the fact that vim, when you start typing
> a count and press the colon, defaults to the range ".,.+x" where
> "x" is one less than the count given. But it works :)
So you delete everything but the "x" and then continue the command
line after that? Yes, that is a hack.
Why not just use <C-U> in the mapping (after the : ) to clear the
command line, then use v:count or v:count1 instead of the second
argument?
HTH --Benji Fisher
