Re: Any automatic bracket-insertion plugins not breaking undo?

On Friday, January 16, 2015 at 4:55:44 PM UTC-6, Christian Brabandt wrote:
> Hi Bram!
>
> On Fr, 16 Jan 2015, Bram Moolenaar wrote:
>
> >
> > Christian Brabandt wrote:
> > > Hm, we already have special cases <C-[Left|Right]> and <S-[Left|Right]>
> > > to move by word|WORD. So how about making <M-Left> and <M-Right> move
> > > without breaking undo?
> > > https://github.com/chrisbra/vim-mq-patches/blob/master/move_cursor_without_breaking_undo
> >
> > It's very likely there will be a request for other movements, e.g. a
> > word back.
> > How about a prefix for movement commands? Something
> > starting with CTRL-G. It's several keys to type, but I assume this will
> > mostly be used in mappings.
>
> I thought about that. But my fear is, that this will allow to jump
> anywhere in insert mode and I think this would probably break undo (a
> problem we have just fixed with <c-r>= in insert mode before 7.4).
> So I did intentionally just allow <M-Left> and <M-Right> in the hope,
> that this will still allow proper undo and will cover most of the snip
> plugin use-cases.
>

I'm definitely going to try the patch, but I think I'd prefer a different prefix also. If it works this is exactly what is needed for auto-close, without all the fuss of a big plugin (unless you want that...)

The meta-keys have traditionally been "safe" for mapping in Vim without stepping on existing features, I think keeping it that way is a good idea.

And I agree these will mostly be used in mappings.

CTRL-G_u breaks undo sequence. What about CTRL-G_U keeping undo sequence unbroken?

It's ok for the short term if just CTRL-G_U_<Left> and CTRL-G_U_<Right> are supported to start with...with potential for more if there is a need for them.

I'd probably restrict to movement within a single line, though.

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