On Jun 11, 1:55 am, Ben Schmidt <[email protected]> wrote:
> > " Jump to start of nth or next block of 16 lines
> > nnoremap<expr>  ]]
> >    \ v:count
> >    \ ? ":<C-U><cr>".(v:count*16+1)."Gzz"
> >    \ : 17-line(".")%16."jzz"
>
> Why is the :<C-U><CR> there? Doesn't that do nothing?
>
> > " Display line and block number
> > nnoremap ][ :echo (line(".")-1)%16 line(".")/16 "List"<cr>
>
> > BUT this function is not working:
>
> > fu! List()
> > " Jump to start of nth or next block of 16 lines
> >    v:count ? ":<C-U><cr>".(v:count*16+1)."Gzz" : 17-line(".")%16."jzz"
> > " Display line and block number
> >    echo (line(".")-1)%16 line(".")/16 "List"<cr>
> > endfu
> > nnoremap ]] :call List()<cr>
>
> In a function, you actually have to run the commands, not just return
> keystrokes like in an expr mapping. Something like this:
>
> fu! List()
>     " Jump to start of nth or next block of 16 lines
>     if v:count
>        execute "normal ".(v:count*16+1)."Gzz"
>     else
>        execute "normal ".(17-line(".")%16)."jzz"
>     endif
>     " Display line and block number
>     echo (line(".")-1)%16 line(".")/16 "List"
> endfu
>
> :help :if
> :help :execute
> :help :normal
>
> Ben.

The :<C-U><CR> is there to clear v:count otherwise the count is passed
to each element of the function.
:help v:count

Where to put it in a function?

-Bill

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