Re: g@ seems to ignore user-defined motion maps

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On July 11, 2014 10:54:36 PM GMT+03:00, Brett Stahlman <brettstahlman@gmail.com> wrote:
>On Friday, July 11, 2014 12:51:47 PM UTC-5, ZyX wrote:
>> > Having thought about it a bit, it occurs to me that it would be
>very difficult for Vim's g@ implementation to treat movements
>accomplished via user mappings the same as built-in {motion}s. Perhaps
>that's why only Vim {motion}s are considered? In the case of Paredit,
>Tamas has graciously agreed to add explicit normal mode mappings for
>d), c), etc..., which is an acceptable workaround.
>>
>> No, it is by no means different from motion support in `d` and other
>built-in operators. My translit3 plugin has no problems with using
>motion from camelcasemotion plugin and it uses `g@` under the hood. So
>you should search problem somewhere else.
>
>This is not what I see. Here's a test case consisting of the
>map-operator example from the Vim help, along with a normal mode
>remapping of $ to G. Hitting $ in normal mode now goes to the end of
>the file, but hitting <F4>$ counts only the spaces on the current
>line...
>
>Brett S.
>
>nmap <silent> <F4> :set opfunc=CountSpaces<CR>g@
>vmap <silent> <F4> :<C-U>call CountSpaces(visualmode(), 1)<CR>
>nmap $ G

Sure. :nmap cannot define motions (and, by the way, *never* use :nmap, :vmap, etc without nore unless you absolutely have to).

You must define at least three mappings:

nnoremap $ G
xnoremap $ G
onoremap $ G

. Last one does work for g@.

Some simple mappings will work if you use

noremap $ G

, but this will redefine $ in select mode as well. Most of time nobody cares about select mode though.


To say that motions do not work *you must define motions*. You did not do this.

>
>function! CountSpaces(type, ...)
> let sel_save = &selection
> let &selection = "inclusive"
> let reg_save = @@
>
> if a:0 " Invoked from Visual mode, use '< and '> marks.
> silent exe "normal! `<" . a:type . "`>y"
> elseif a:type == 'line'
> silent exe "normal! '[V']y"
> elseif a:type == 'block'
> silent exe "normal! `[\<C-V>`]y"
> else
> silent exe "normal! `[v`]y"
> endif
>
> echomsg strlen(substitute(@@, '[^ ]', '', 'g'))
>
> let &selection = sel_save
> let @@ = reg_save
>endfunction

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