Ken Mankoff <mank...@gmail.com> writes: > I have > [+] > #+LATEX_HEADER: \input{preamble} > > in an Org file. When I try to preview equations, it does not work > because "\input{preamble}" is exported to the equation preview preamble, > but no file "preamble.tex" is exported. The "preamble.tex" file is not > needed just to preview an equation. > > Can anyone suggest a work-around?
\IfFileExists{./preamble.tex}{true}{false} Etoolbox has a number of nice tests for more sophisticated conditioning. —Rasmus -- Dobbelt-A