bug#41347: 28.0.50; calculator.el: Cannot input negative exponents

[Chris Zheng]

On Mon, May 18, 2020 at 11:28:21AM +0200, Mattias Engdegård wrote:
> 17 maj 2020 kl. 22.26 skrev Eli Barzilay <eli@barzilay.org>:
>
> > the idea is to mimic common calculators
> > where you can type "3." or "3e" and get 3.
>
> Thank you Eli! I can confirm that after removing all the string transformation prior to 
> the call to string-to-number, everything works as expected except "1.e3" (dot 
> before E). A single transformation taking care of that case was added for the sake of 
> completeness.
>
> The attached patch has now been pushed to master.

Hello Mattias,

Thank you for fixing it. Still I think it is uncommon to use `rx` here...

Best regards,

Chris