72025Re: Breaking undo in Insert mode
- Jul 9, 2013Ben Fritz wrote:
> On Tue, Jul 9, 2013 at 5:54 AM, Bram Moolenaar <Bram@...> wrote:Yeah, that's true. I suppose we could avoid saving for undo under
> > That can be done by returning cursor key sequences. No need for
> > setline():
> > imap ( <C-R>=LeftParen()<CR>
> > fun! LeftParen()
> > return "()\<Left>"
> > endfun
> > imap ) <C-R>=RightParen()<CR>
> > fun! RightParen()
> > return "\<Right>"
> > endfun
> I don't remember how setline() solves the problem, but just returning
> cursor sequences doesn't work, because it breaks undo/redo/repeat.
certain conditions, but it's quite hard to decide what those conditions
are. Perhaps "when inserting a register and the cursor remains within
the inserted text"?
> If I insert abc(123) with mappings like, then press '.' somewhere--
> else, I will only get the 123 inserted. Pressing 'u' after inserting
> "abc(123) + 456" will only undo the " + 456".
> The mappings that used to work to get around this are complicated;
> hence the reason I'm using a plugin instead of simple mappings; but
> previously somehow using setline() allowed all of undo, redo, and
> repeat to work as if there were not any mappings. Now only repeat
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