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

[Sébastien Vauban]

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?

Best regards,
  Seb

-- 
Sébastien Vauban