On Oct 10, 2011, at 2:12 AM, Jason Haslam wrote:

> This small patch adds another preprocessor callback that is invoked every 
> time the 'defined' operator is seen. This (together with the macro expansion 
> callback) allows all of the macro names in a preprocessor condition to be 
> visited. I first tried to accomplish the same thing by addressing the FIXMEs 
> on the If/Elif callbacks but those changes seemed too invasive.


Yes, those would be fairly invasive. I like this better. Committed as r141926, 
thanks!

        - Doug
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