# Re: Too narrowly defined: DIVISION SIGN & COLON

From: Khaled Hosny <khaledhosny_at_eglug.org>
Date: Wed, 11 Jul 2012 03:51:23 +0200

It can be handled at a different level; when one types 3:5 in a
Unicode-complient TeX engine, what gets output to the output file is the
ratio not the colon, and colon gets output with 3\colon{}5.

Regards,
Khaled

On Tue, Jul 10, 2012 at 06:00:24PM -0700, Mark Davis ☕ wrote:
> That is, they may be spaced differently (depending on the font and
> environment).
>
> I'm not against pointing to RATIO for specific math contexts, but to tell Joe
> Smith that he should be using a different character to say that "the ratio of
> gravel to sand should be 3:1" is artificial and pointless.
>
> ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
> Mark
>
> — Il meglio è l’inimico del bene —
>
>
>
> On Tue, Jul 10, 2012 at 5:51 PM, Khaled Hosny <khaledhosny_at_eglug.org> wrote:
>
> They are spaced differently. Attached how they are rendered by TeX,
> using its default spacing rules, the first is the ratio (which is spaced
> as a relational symbol) and the second is the colon (which is spaced as
> punctuation mark), both in math mode, and the last one is the colon in
> text mode.
>
> On Tue, Jul 10, 2012 at 04:22:06PM -0700, Mark Davis ☕ wrote:
> > I would disagree about the preference for ratio; I think it is a
> historical
> > accident in Unicode.
> >
> > What people use and have used for ratio is simply a colon. One writes
> 3:5, and
> > I doubt that there was a well-established visual difference that demanded
> a
> > separate code for it, so someone would need to write 3∶5 instead.
> >
> > Mark
> >
> > — Il meglio è l’inimico del bene —
> >
> >
> >
> > On Tue, Jul 10, 2012 at 3:22 PM, Asmus Freytag <asmusf_at_ix.netcom.com>
> wrote:
> >
> >     U+2236 RATIO
> >     * Used in preference to 003A : to denote division or scale
> >
> >
>
>
Received on Tue Jul 10 2012 - 20:53:02 CDT

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