Hi Eric, Tim, Carsten and all,
Eric S Fraga wrote:
At Fri, 29 Jan 2010 06:26:21 -0500, Tim Burt wrote:
Eric S Fraga writes:
For any LaTeX expert out there, is there an easy way to determine
whether
a particular macro has been defined? If so, we wouldn't even need
to check
for beamer, simply for \alert.
Use the
\ifx<command>\undefined ... \else ... \fi
construct to determine if a command already exists, and then to
take action
in the appropriate case. Test the example below both as-is and
with the
first ~\newcommand*{\thisalert}~ commented out to see the different
results.
Thanks to all. This is great stuff...
The following org-mode line does the job for me:
#+latex_header: \ifx\alert\undefined\let\alert\textbf\fi
If \alert is not defined, I have =alert= behave as =textbf=.
Could this somehow made part of Org-mode, so that one does not need
to repeat
this one-liner in every file that could be exported to pure LaTeX
and/or
Beamer?