From: Aditya Mahajan <adityam@umich.edu>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: Incorrect rendering of * with UTF math fonts
Date: Wed, 22 Feb 2012 17:22:34 -0500 (EST) [thread overview]
Message-ID: <alpine.LNX.2.02.1202221720450.732@ybpnyubfg.ybpnyqbznva> (raw)
In-Reply-To: <20120222215312.GA16395@khaled-laptop>
On Wed, 22 Feb 2012, Khaled Hosny wrote:
> On Wed, Feb 22, 2012 at 02:52:22PM -0500, Aditya Mahajan wrote:
>> Hi,
>>
>> Using * in superscripts gives wrong glyph size and spacing.
>>
>> For example, with LM math everyhing looks fine:
>>
>> \starttext
>> $x^*$ vs $x^{\ast}$
>> \stoptext
>
> For me this is typeset using LM Type1 fonts, not the OpenType LM math
> font which explains why both are correct, after adding
> \setupbodyfont[modern] the first * is raised than the other but still
> readable.
>
>> With Cambria, the result is OK (but you can still see the
>> differences in the spacing of * in x^*)
>>
>> \usemodule[simplefonts]
>> \setmathfont[Cambria]
>> \starttext
>> $x^*$ vs $x^{\ast}$
>> \stoptext
>>
>> With Neo Euler, $x^*$ look really bad.
>>
>> \usemodule[simplefonts]
>> \setmathfont[Cambria]
>> \starttext
>> $x^*$ vs $x^{\ast}$
>> \stoptext
>>
>> I cannot figure out why this is happening. It definitely looks like
>> a bug at the context end rather than a bug with the fonts.
>
> It seems that * in math mode should map to U+2217 (which is what \ast
> maps to) and not the ASCII asterisk.
Indeed. Making this change gives the correct result.
@Hans, can you make the following change in char-def.lua
--- char-def.old 2012-02-22 17:18:05.000000000 -0500
+++ char-def.lua 2012-02-22 17:19:06.000000000 -0500
@@ -382,8 +382,7 @@
description="ASTERISK",
direction="on",
linebreak="al",
- mathclass="binary",
- mathname="ast",
+ mathsymbol=0x2217,
unicodeslot=0x002A,
},
{
Aditya
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prev parent reply other threads:[~2012-02-22 22:22 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-22 19:52 Aditya Mahajan
2012-02-22 20:31 ` Otared Kavian
2012-02-22 20:47 ` Wolfgang Schuster
2012-02-22 21:28 ` Otared Kavian
2012-02-22 21:35 ` Wolfgang Schuster
2012-02-22 21:53 ` Khaled Hosny
2012-02-22 22:22 ` Aditya Mahajan [this message]
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