Re: math symbol: blacktriangle

[Hans Hagen <pragma@wxs.nl>]

On 17-7-2012 19:39, Aditya Mahajan wrote:
> On Tue, 17 Jul 2012, Andreas Mang wrote:
>
>> Dear all,
>>
>> The \blacktriangle and \blacktriangledown symbol seem to be missing,
>> though \blacktriangleright and \...-left are defined. Is there a quick
>> way to add missing symbols by myself from the knowledge of Unicode /
>> XML identifier (http://www-sop.inria.fr/marelle/tralics/doc-b.html)?
>
> For opentype math fonts, have a look at char-def.lua. To add missing
> symbols, you need to add appropriate fields in the lua table.
>
> The hard part is verifying the symbol to unicode slot mapping (the list
> at tralics is not always consistent with the ams list that is used by
> unicode-math package). If you know the right mappings, add a patch to
> char-def.lua and send it to the list (or the dev-context list);
> otherwise, just send the mappings and I can add them to the lua table.

keep in mind that not all those black triangles in ams math ended up in 
unicode

(future lm/gyre fonts might have some of these symbols)

Hans

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