I found this a week or so ago. I tried to post to the list about it but it didn't work. I updated my CVS copy today and the typo remains. I'm surprised no one's done anything about it yet. The typo is in xc/xc/programs/Xserver/GL/glx/ singlesize.c on line 907. "case GL_FOG_COORD_SOURCE:" should actually be "case GL_FOG_COORD_SRC:"
Fixed in X.Org after last Mesa merge.
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