From: Hans Hagen <pragma@wxs.nl>
To: ntg-context@ntg.nl
Subject: Re: Colon as non-operator
Date: Tue, 31 May 2016 20:03:16 +0200 [thread overview]
Message-ID: <0a6636b5-b289-5deb-0d92-9a4f4172d4e7@wxs.nl> (raw)
In-Reply-To: <CB7969FF-D676-4B9C-A547-CECBA9D9B1C9@telia.com>
On 5/31/2016 5:53 PM, Hans Åberg wrote:
>
>> On 31 May 2016, at 17:04, Hans Hagen <pragma@wxs.nl> wrote:
>>
>> On 5/31/2016 4:18 PM, Hans Åberg wrote:
>>> It is possible to get the symbol : COLON U+003A to expand to \colon, instead of the ratio operator, as it is now?
>
>> it's a commented option
>
> What does that mean?
that it has been considered but rejected already
>> i.e. we decided not to do that because the normal colon would be obscured then (just like overloading a period is not realistic)
>
> But can one not have it only in math, the way you suggested before, as in the code below?
so what about (1:2) and so? do we really always want that colon symbol?
> Anyway, for Unicode fonts that support RATIO U+2236, input : COLON U+003A should properly give that RATIO in the output, and \colon should output a COLON. :-)
>
>
> \setupbodyfont[xits,10pt]
>
> \appendtoks
> \catcode`:=\activecatcode
> \letcharcode `: \colon
> \to \everymathematics
You love active characters yes? Try to avoid them. More efficient is:
\Umathcode"3A="6"00"002236 % : to \colon
in one of your styles
> \starttext
>
> Note: the colon in text should behave normally.
> \startformula
> \startalign
> \NC f\NC\colon A→B \NR % Outputs ∶ RATIO U+2236
> \NC f\NC: A→B \NR % : COLON U+003A, outputs ∶ RATIO U+2236
> \NC f\NC ∶ A→B \NR % ∶ RATIO U+2236
> \stopalign
> \stopformula
>
> \stoptext
could be a style (or option) but then more for a set of such symbols,
not for just one
Hans
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prev parent reply other threads:[~2016-05-31 18:03 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-31 14:18 Hans Åberg
2016-05-31 15:04 ` Hans Hagen
2016-05-31 15:53 ` Hans Åberg
2016-05-31 18:03 ` Hans Hagen [this message]
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