[OS X TeX] writing sty files

[Maarten Sneep]

On 21-nov-2006, at 17:54, Themis Matsoukas wrote:

> On Nov 21, 2006, at 10:36 AM, Alan Munn wrote:
>
>> At 9:58 AM -0500 11/21/06, Themis Matsoukas wrote:
>>> I have a custom .sty file that contains my personal environments  
>>> and shortcuts. One of these shortcuts involves the command  
>>> \newcomment which only works inside memoir. This means that if I  
>>> call the style file using anything other class than memoir, this  
>>> command gives an error (even if it is not used in the current  
>>> file). Is there a way to check within a package whether the  
>>> current class is memoir or something else? This would allow me to  
>>> define \newcomment only if memoir is loaded.
>>
>> \@ifpackageloaded{<package name>}{<then part>}{<else part>}
>>
>> Alan
>
> Many thanks!

In addition to that: there is a comment.sty, which probably allows  
you to define similar behaviour in the else part.

Maarten
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