Excerpts from Alvaro Herrera's message of vie ago 24 11:44:33 -0400 2012:
> Actually it seems better to just get rid of the extra varargs function
> and just have a single exec_prog. The extra NULL argument is not
> troublesome enough, it seems. Updated version attached.
Applied (with some very minor changes).
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Álvaro Herrera http://www.2ndQuadrant.com/
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