From: Aditya Mahajan <adityam@umich.edu>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: unicode integral sign
Date: Sat, 29 May 2010 13:32:36 -0400 (EDT) [thread overview]
Message-ID: <alpine.LNX.2.00.1005291315320.13102@ybpnyubfg.ybpnyqbznva> (raw)
In-Reply-To: <htrbd4$ak1$1@dough.gmane.org>
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On Sat, 29 May 2010, Yury G. Kudryashov wrote:
> Taco Hoekwater wrote:
>
>> Yury G. Kudryashov wrote:
>>> Hi!
>>>
>>> I try the following:
>>>
>>> \starttext
>>> $∫_a^b \int_a^b$
>>> \stoptext
>>>
>>> In the first case, the integral sign is below the text. Should I use
>>> another font, or is it possible to fix with the default one?
>>
>> It is possible to fix this. The reason for the odd placement is that the
>> 'math code' of ∫ is not set up properly (and it probably isn't either
>> for some other bare Unicode characters). To fix the hard way, add this
>> at the top of your input file:
>>
>> \Umathcode `∫ = 1 0 `∫ % 1 == \mathop, 0=fam0, ∫=glyph
> Is there any documentation on char-def.lua file format? If I'll understand
> it, I'll send a patch for the symbols I use.
Not a complete documentation, but some explanation is here
https://www.tug.org/members/TUGboat/tb30-2/tb95mahajan-cmath.pdf
> Currently I have no idea why the following strings in char-def don't work.
>
> [0x222B]={
> adobename="integral",
> category="sm",
> cjkwd="a",
> description="INTEGRAL",
> direction="on",
> linebreak="ai",
> mathspec={
> { class="nothing", name="intop" },
> { class="limop" , name="int" },
> },
> unicodeslot=0x222B,
> },
>
> Replacing mathspec=... with mathclass="limop", mathname="int" seems to work
> (copied from n-ary summation).
>
> BTW, in both solution ∫_a acts like \int\limits_a, not \int_a.
In plain TeX, this is taken care by
\mathchardef\intop="1352 \def\int{\intop\nolimits}
Can I do the same in luatex without active characters?
\Umathchardef\INTOP=1 0 `∫
\def\INT{\INTOP\intlimits}
\catcode`∫=\active
\let ∫=\INT
\starttext
$∫_a^b$
$\displaystyle ∫_a^b$
\stoptext
Aditya
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next prev parent reply other threads:[~2010-05-29 17:32 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-29 7:45 Yury G. Kudryashov
2010-05-29 9:58 ` Taco Hoekwater
2010-05-29 15:21 ` Yury G. Kudryashov
2010-05-29 17:32 ` Aditya Mahajan [this message]
2010-05-29 18:57 ` Taco Hoekwater
2010-05-29 19:05 ` Aditya Mahajan
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