From: Hans Hagen <pragma@wxs.nl>
To: ntg-context@ntg.nl
Subject: Re: Math literal colon
Date: Fri, 24 Jul 2015 11:40:04 +0200 [thread overview]
Message-ID: <55B207F4.9070505@wxs.nl> (raw)
In-Reply-To: <B3E9F911-319F-4796-9B83-7B27C364D110@telia.com>
On 7/20/2015 6:09 PM, Hans Aberg wrote:
>
>> On 20 Jul 2015, at 17:50, Manuel Blanco <manuelbl@ucm.es> wrote:
>>
>> A little bit more of intelligence can be given with
>>
>> \begingroup\lccode`\~=`\:\lowercase{\endgroup
>> \unexpanded\def~}{\futurelet\tmptoken\docolon}
>> \unexpanded\def\docolon{\ifx=\tmptoken\mathrel{\mathop{\mathchar`\:}}\else\colon\fi}
>> \mathcode`\:="8000 %
>>
>> That lets you do $f: A \to B$ and $f(x) := x^2$
>
> For the second, one can use ≔ COLON EQUALS U+2254. But it is a good point, though.
there is actually a more modern trick:
\starttext
\startluacode
characters.mathpairs[0x3A] = { [0x3D] = 0x2254 }
characters.mathpairs[0x3E] = { [0x3D] = 0x2265 }
characters.mathpairs[0x3C] = { [0x3D] = 0x2264 }
characters.mathpairs[0x3D] = { [0x3A] = 0x2255 }
\stopluacode
\startTEXpage
$a := b <= =< c =: d >= e$
\stopTEXpage
\stoptext
i uploaded a beta with these predefined (in char-def.lua) but we can add
more (if someone provides me the list)
negations and a few more already were present
Hans
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next prev parent reply other threads:[~2015-07-24 9:40 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-20 12:30 Hans Aberg
2015-07-20 14:40 ` Aditya Mahajan
2015-07-20 15:43 ` Manuel Blanco
2015-07-20 15:50 ` Manuel Blanco
2015-07-20 16:09 ` Hans Aberg
2015-07-24 9:40 ` Hans Hagen [this message]
2015-07-24 12:40 ` Hans Aberg
2015-07-24 13:34 ` Hans Hagen
2015-07-24 14:13 ` Hans Aberg
2015-07-24 14:28 ` Hans Hagen
2015-07-24 16:18 ` Hans Aberg
2015-07-24 16:34 ` Hans Hagen
2015-07-24 16:57 ` Hans Aberg
2015-07-24 19:58 ` Hans Hagen
2015-07-24 20:45 ` Hans Aberg
2015-07-20 16:22 ` Hans Aberg
2015-07-20 19:34 ` Manuel Blanco
2015-07-20 20:06 ` Hans Aberg
2015-07-20 20:13 ` Hans Aberg
2015-07-24 9:43 ` Hans Hagen
2015-07-24 13:00 ` Hans Aberg
2015-07-24 13:48 ` Hans Hagen
2015-07-24 14:19 ` Hans Aberg
2015-07-24 14:29 ` Hans Hagen
2015-07-24 16:20 ` Hans Aberg
2015-07-20 16:06 ` Hans Aberg
2015-07-20 16:37 ` Aditya Mahajan
2015-07-20 17:08 ` Hans Aberg
2015-07-20 17:18 ` Hans Aberg
2015-07-20 21:29 ` Hans Aberg
2015-07-24 8:30 ` Hans Hagen
2015-07-24 12:32 ` Hans Aberg
2015-07-24 13:29 ` Hans Hagen
2015-07-24 14:08 ` Hans Aberg
2015-07-24 14:26 ` Hans Hagen
2015-07-24 16:11 ` Hans Aberg
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