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Re: Quick math calc on any buffer

From: Richard Riley
Subject: Re: Quick math calc on any buffer
Date: Sun, 22 Feb 2009 00:37:07 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.90 (gnu/linux)

Marc Tfardy <address@hidden> writes:

> Rodrigo Lazo schrieb:
>> Hi all,
>> Is there a way to compute a math expression on any buffer? I mean, if I
>> have a buffer with the following expression
>> 2 + 3 
>> I want to mark the region and compute the result
>> 2 + 3 = 5
>> It doesn't seems too hard to do, I've looked on calculator.el for a
>> "computing" function I can call but I didn't find it. 
> Try with embeded mode of calc: C-x * E (no need to mark the region)
> and similar commands (J or W in place of E). You need to type C-x * E
> again to exit the embeded mode.
> Another solution:
>  - mark the region with math expression and put it into kill-ring (M-w)
>  - type SPC = SPC
>  - run the calc (C-x * c)
>  - type ' (apostrophe) and yank yor math expression (C-y)
>  - type RET
>  - type y (or C-x * y) to copy the result into buffer
>  - exit calc (q)
> regards
> marc

You might consider using "anything". There is a plugin

 important and urgent problems of the technology of today are no longer the 
satisfactions of the primary needs or of archetypal wishes, but the reparation 
of the evils and damages by the technology of yesterday.  ~Dennis Gabor, 
Innovations:  Scientific, Technological and Social, 1970

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