On Fri, August 6, 2010 8:31 am, Oliver wrote:
> Hello!
>
> I searched, :h-ed and asked in #vim on freenode, but nobody seemed to
> know a good way to use marks in :map without having a destructive
> effect on what was marked before in those registers. It is annoying to
> read scripts or :maps on the internet that say "will ruin your s
> register". The solution given in :h restore-position will do just
> that.
>
> Right now my solution is to map all these things to one register and
> never use it outside of these :maps, but that doesn't always work for
> plugins I've downloaded. The :h restore-position page says "For
> something more advanced see |winsaveview()| and |winrestview()|." This
> is apparently too advanced, as I've never seen it used.
>
> If nobody knows a solution for this, I think I'll send off a feature
> request for a special register dedicated for use inside :maps, a
> special mark set whenever a map is used, or an expanded :h
> restore-position page explaining how to use it in the context of
> simple :maps. I would prefer the first solution.
>
> If you are wonder why I can't use the `` mark, it is because my map
> does 99[(%v%= so I don't know how many jumps are executed. [( is a
> Slimv command which goes to the beginning of the () block the cursor
> is currently in, doing 99[( takes you to the outermost () block.
So you want to use winsaveview() and winrestview(). You basically use them
like this:
map <silent> <f2> :let a=winsaveview()<cr>...:call winrestview(a)<cr>
The <silent> prevents, that your ex-commands will be echoed on the command
line and everything you'd like to do would be the ... part. I admit, this
can become very complex, so personally, I'd wrap everything in a function
which does everything (save and restore registers and positions and do
your action.) and simply call the function:
map <silent> <f2> :call MyFunction()<cr>
fun! MyFunction
:let a = winsaveview()
:let old_reg = @a " you could use getreg()
... " Do your stuff here with register a
:call winrestview(a)
:let @a = old_reg " you could also use setreg()
:unlet a
endfun
Additionally, if you want to keep your jump list, prefix every jump
command with the :keepjumps command.
See :h keepjumps
:h map-silent
:h winsaveview()
:h winrestview()
:h setreg()
:h getreg()
:h getregtype()
regards,
Christian
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