Hello,

coming from a comment in the question http://tex.stackexchange.com/questions/17265, I wonder what the policy of the LaTeX project is concerning packages that work only under pdfTeX or make some assumptions that are not valid in the newer engines. Is it intended that such necessary fixes will be included in the packages or in the kernel, or will the fixes have to be provided in separate packages? For reference, it is the second comment to this answer: http://tex.stackexchange.com/questions/17265/compilation-problem-extended-mathchar-used-as-mathchar-with-mathastext/17280#17280

Philipp