Hirohito Higashi wrote:
> Hi Bram and Vim developers,
>
> :help g@
> doc> *g@* *E774* *E775*
> doc> g@{motion} Call the function set by the 'operatorfunc'
> option.
> (snip)
> doc>
> doc> Here is an example that counts the number of spaces with <F4>: >
> doc>
> doc> nmap <silent> <F4> :set opfunc=CountSpaces<CR>g@
> doc> vmap <silent> <F4> :<C-U>call CountSpaces(visualmode(), 1)<CR>
> doc>
> doc> function! CountSpaces(type, ...)
> doc> let sel_save = &selection
> doc> let &selection = "inclusive"
> doc> let reg_save = @@
> doc>
> doc> if a:0 " Invoked from Visual mode, use '< and '> marks.
> doc> silent exe "normal! `<" . a:type . "`>y"
> doc> elseif a:type == 'line'
> doc> silent exe "normal! '[V']y"
> doc> elseif a:type == 'block'
> doc> silent exe "normal! `[\<C-V>`]y"
> doc> else
> doc> silent exe "normal! `[v`]y"
> doc> endif
> doc>
> doc> echomsg strlen(substitute(@@, '[^ ]', '', 'g'))
> doc>
> doc> let &selection = sel_save
> doc> let @@ = reg_save
> doc> endfunction
>
> This sample script does not work properly when use visual-block-mode with '$'.
>
> How to reproduce:
> (0) Prepare test.txt containing the following.
> a a
> b b b b
> cc
>
> (1) Copy to ~/.vimrc above sample script.
> (2) Open test.txt
> (3) Input below command.
> <C-V>G$
> (4) Press <F4>
>
> Expected behavior:
> - Display '5' on command line.
>
> Actual behavior:
> - Display '3'.
>
>
> I think that we should use 'gv' in this case.
> Attached a patch.
Thanks!
> PS
> Is it necessary condition "elseif a:type == 'block'" ?
> Help says unnecessary. (Following excerpt)
> doc> Although "block" would rarely appear, since it can
> doc> only result from Visual mode where "g@" is not useful.
Right, it can be removed. I wonder if there is an example where "block"
would matter. Perhaps when changing text, e.g. adding a number to all
numbers in the selected area. That's much more complicated though.
--
Eagles may soar, but weasels don't get sucked into jet engines.
/// Bram Moolenaar -- [email protected] -- http://www.Moolenaar.net \\\
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\\\ an exciting new programming language -- http://www.Zimbu.org ///
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