Re: [AUCTeX] Adding curly braces in math mode

[Adam Johnson]

> > > Furthermore I'm looking for a way to expand math operators with indices
> > > to its last values.
> > > Example: I typed $\sum_{i=1}^n ...$. Later I type `$\sum_' and now I 
> > > want
> > > AUCTeX to print `\sum_{i=1}^n '. How can this be done?
> >
> > Hm, isn't something like this only useful in special cases?
>
> Well, I'm writing lots of scripts for lectures. It's quite often the
> case that the same operators with the same indices occur. I guess this
> will save a lot of time and also think that this will also save others
> time.

I think a better way for doing this is to define a new command in LaTeX in 
your preamble other than in AUCTeX.  I usually maintain a universal preamble 
to do so.  For example, \newcommand{\sumin}{\sum_{i=1}^n}, then you can use 
it everywhere.  If you don't like it anymore, you can make a global 
replacement to restore it the original case.