Hi Uwe,
\newcommand{\setR}{{\mathord{\mathbb R}}}
Does X-symbol-mode behave correctly if you use \newcommand*{\setR}{\mathbb{R}} instead? Cheers, J _______________________________________________ auctex-devel mailing list auctex-devel@gnu.org https://lists.gnu.org/mailman/listinfo/auctex-devel