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Re: [Orgmode] Re: [org-beamer] \alert


From: Carsten Dominik
Subject: Re: [Orgmode] Re: [org-beamer] \alert
Date: Mon, 1 Feb 2010 17:18:39 +0100


On Jan 29, 2010, at 4:36 PM, S├ębastien Vauban wrote:

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?

Yes - this is in there now.  Let's see if someone complains.

- Carsten





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