[NTG-context] Question about spacing of some math symbols

Khaled Hosny khaledhosny at eglug.org
Sat Feb 25 11:39:15 CET 2012


On Fri, Feb 24, 2012 at 10:19:20AM +0100, Hans Hagen wrote:
> On 23-2-2012 21:16, Aditya Mahajan wrote:
> >On Thu, 23 Feb 2012, Khaled Hosny wrote:
> >
> >>Hi all,
> >>
> >>While testing some XITS symbols, I was wondering about the spacing of
> >>the following symbols:
> >>
> >>\setupbodyfont[xits]
> >>
> >>\starttext
> >>$$a < b$$ # reference
> >>$$a ⨼ b$$
> >>$$a ⨽ b$$
> >>$$a ⪝ b$$
> >>$$a ⪞ b$$
> >>$$a ⪬ b$$
> >>$$a ⪭ b$$
> >>\stoptext
> >>
> >>Not sure about the first two, but I think the rest should be mathrel
> >
> >I agree.
> >
> >>(additionally, does anyone knows a definite Unicode reference for such
> >>proprieties?)
> >
> >I usually use the ams symbol list (as implemented by the unicode-math
> >package) as reference.
> 
> When (years ago) I wrote the math ml parsers I used those
> xits/ams/whatever lists but they had inconsistencies (no surprise as
> there are so many smbols) .. so whatever change we do, I'd rather
> not copy blindly but consider carefully; some symbols have multiple
> usage and we can support that. Now, as long as we use names that's
> no big deal, but when characters are used directly there can be
> conflicting interests with respect to defaults. For that I'd like to
> introduce the option to set a 'domain' or whatever it's called which
> will adapt the spacing category automatically
> 
> btw ... did you ever look at:
> 
> http://www.openmath.org/cdnames.html

I'll leave that to Aditya; the math expert :)

Regards,
 Khaled


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