On Wed, 12 Jul 2006 14:15:39, Andre Bar'yudin wrote:
>
> Who would think it was possible...
>
> On 7/12/06, Erez D <[EMAIL PROTECTED]> wrote:
> > if anyone is interested, here is the solution:
> >
> > :%s/\([0-9]*\)+\([0-9]*\)/\=submatch(1)+submatch(2)/g
> >
> > > 8+9 to 20
> > > 1+7 to 29
> > >
> > > and i want to change it to:
> > >
> > > 17 to 20
> > > 8 to 29
> > >
> > > (i.e. do the math)
I don't want to start a religious war, BUT, ....
May be it is a formidable task for VI. In Emacs I have a package
(written purely in lisp of course) that computes a full algebraic
sentence and have some simple functions (abs, log/exp, trigonometric)
included in it. You can mark an algebraic expression and evaluate it.
e.g. @sqrt(1+(1+3)*2) ==> 3
a=3 ==> 3 (+message a set to 3)
a-a**2/2 ==> -1.500000 ((+messages: a was 3 a was 3)
There is one drawback - you must not use names with `-' (hyphen),
otherwise the `-' is taken to be minus.
The algebraic package is here: http://t-e-k.biz/els/compute.el
The marks package is here: http://t-e-k.biz/els/ekmarks.el
Ehud.
--
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