On 16/10/2015 08:47, Ulrike Fischer wrote:
> Am Thu, 15 Oct 2015 18:18:58 +0100 schrieb David Carlisle:
>
>>> or perhaps \Umathcharnumdef was always ok ?
>>
>> yes, it was, the Umath... commands were always available with their
>> basic luatex names and also prefixed luatex.
>
> That's not true. In a texlive 2012
>
> \documentclass{article}
>
> \begin{document}
> \show\Umathcharnumdef
> \show\luatexUmathcharnumdef
> \end{document}
>
> gives
>
>> \Umathcharnumdef=undefined.
> l.36 \show\Umathcharnumdef
>
> ?
>> \luatexUmathcharnumdef=\Umathcharnumdef.
> l.37 \show\luatexUmathcharnumdef
For LuaTeX
\directlua{
local i
local t = { }
for _,i in pairs(tex.extraprimitives("luatex")) do
if string.match(i, "^U") then
table.insert(t, i)
end
end
tex.enableprimitives("", tex.extraprimitives("Umath"))
tex.enableprimitives("", t)
}
will enable all of the \U... primitives with their 'natural names with
older LuaTeX releases and newer ones: they used to be just part of the
"luatex" list. So something like
\ifdefined\directlua
\directlua{
local i
local t = { }
for _,i in pairs(tex.extraprimitives("luatex")) do
if string.match(i,"^U") then
table.insert(t,i)
end
end
tex.enableprimitives("", tex.extraprimitives("Umath"))
tex.enableprimitives("", t)
}
\else
\ifdefined\XeTeXmathcode
\let\Umathcode\XeTeXmathcode
\let\Umathcodenum\XeTeXmathcodenum
\let\Umathchar\XeTeXmathchar
\let\Umathcharnum\XeTeXmathcharnum
\let\Umathchardef\XeTeXmathchardef
\let\Umathcharnumdef\XeTeXmathcharnumdef
\let\Udelcode\XeTeXdelcode
\let\Udelcodenum\XeTeXdelcodenum
\let\Udelimiter\XeTeXdelimiter
\let\Umathaccent\XeTeXmathaccent
\let\Uradical\XeTeXradical
\fi
\fi
should get you \U... with all possible supported engines.
Joseph
