> Hans Hagen > 23. Dezember 2015 um 10:17 > On 12/23/2015 3:19 AM, Alan BRASLAU wrote: >> So it it a TeX programming limitation. >> >> The risk of leading to an exponential number of branches is addressed >> by Knuth at the beginning of Chapter 17 of the TeXbook (p. 139): >> "Mathematicians tend to \quote{overuse} \over when they first begin to >> typeset their own work on a system like \TEX." ... >> >> At one point, I went back to using \over rather than \frac as the later >> was broken and gave no output. This has since been fixed, but I stayed >> with \over as I find primary operators to be much more elegant syntax >> than multiple argument macros. It is too bad that luatex does not >> employ a better programming solution, as the use of \frac{}{} leads to >> ugly mathematical source code. > > Well, it is not impossible in mkiv do make something 1\alansover2 that > adjusts itself to some settings (i could probably do it right now) but > who will use it (apart from you) and who would document it then .. Would this method allow fractions in the second form below with ÷ instead of \over? \starttext \startformula 1 = \frac{2}{3} + { 1 ÷ 3 } \stopformula \stoptext Wolfgang