[luatex] \mathchardef, etc., input range and \mathchar in text

Joseph Wright joseph.wright at morningstar2.co.uk
Thu Dec 22 15:10:20 CET 2011

Hello Taco,

On 22/12/2011 13:53, Taco Hoekwater wrote:
>> These are marked 'unaltered', but XeTeX, pdfTeX and TeX "8000 is not
>> valid. I suspect that this 'out by one' behaviour is not intentional,
>> and it's certainly not what you'd expect from the docs.
> Yes, that is a bug.

Thanks for the quick response. I'll stick with the traditional range
here then!

>> An aside from the same tests. With other engines, using
>> \mathchar<whatever>  in text gives an error about a missing $. I don't
>> get that with LuaTeX, which seems to silently ignore this.  I assume
>> this is a bug?
> No, that is a feature. AFAIK, it is even documented somewhere in the
> math chapter of the reference manual.

Okay, I'd not looked in detail (as I say, this came up as an aside from
the other point). I'll bear this one in mind, then.
Joseph Wright

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