GNU bug report logs -
#10554
24.0.92; No units specified (dimensionless quantities in Emacs Calc)
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Reported by: "Roland Winkler" <winkler <at> gnu.org>
Date: Thu, 19 Jan 2012 05:27:02 UTC
Severity: normal
Found in version 24.0.92
Done: Jay Belanger <jay.p.belanger <at> gmail.com>
Bug is archived. No further changes may be made.
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Your message dated Fri, 20 Jan 2012 22:21:59 -0600
with message-id <87k44lu1lk.fsf <at> gmail.com>
and subject line Re: bug#10554: 24.0.92; No units specified (dimensionless quantities in Emacs Calc)
has caused the debbugs.gnu.org bug report #10554,
regarding 24.0.92; No units specified (dimensionless quantities in Emacs Calc)
to be marked as done.
(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)
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10554: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=10554
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[Message part 2 (message/rfc822, inline)]
In Calc type
'e T m^2 / hbar
Convert this to SI units with u c si RET
- That's perfect. We get a dimensionless number.
Let's try again. In Calc type (more my range of numbers)
'e T nm^2 / hbar
Now when we type again u c, Calc remembers what we did before.
So as a unit it offers "default 1". Let's take this default.
So just type RET
Error: No units specified
In other words: if an expression with units simplifies to a
dimensionless number, Calc does not accept the unit "1", though it
even offers this unit as a default for calc-convert-units.
In GNU Emacs 24.0.92.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.20.1)
of 2011-12-14 on regnitz
Windowing system distributor `The X.Org Foundation', version 11.0.10706000
[Message part 3 (message/rfc822, inline)]
> In Calc type
>
> 'e T m^2 / hbar
>
> Convert this to SI units with u c si RET
> - That's perfect. We get a dimensionless number.
> Let's try again. In Calc type (more my range of numbers)
>
> 'e T nm^2 / hbar
>
> Now when we type again u c, Calc remembers what we did before.
> So as a unit it offers "default 1". Let's take this default.
> So just type RET
>
> Error: No units specified
>
> In other words: if an expression with units simplifies to a
> dimensionless number, Calc does not accept the unit "1", though it
> even offers this unit as a default for calc-convert-units.
The version of Calc in bzr Emacs will no longer offer "1" as a default.
This bug report was last modified 13 years and 158 days ago.
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