afni.nimh.nih.gov

I had no grep syntax... as for original script the guy used -- it was using google services which are N/A any more: [web.mit.edu]

As for a quick grep line to catch some of the victims (not all since that would require syntax parsing and multiline handling) and not even care about snprintfs which might exhibit similar pattern, this might do it:

$> git grep -e 'sprintf(\s*\(\w\+\)\s*,[^,]\+,\s*\1\>'              
3dZcat.c:         sprintf(ZCAT_output_prefix, "%s.gz", ZCAT_output_prefix);
SUMA/SUMA_Surface_IO.c:                              sprintf(comment, "%s%c", comment, c);
SUMA/SUMA_niml.c:      for (i=0; i<3; ++i) sprintf(stmp,"%s %f", stmp, VolPar->CENTER_OLD);
SUMA/SUMA_niml.c:      for (i=0; i<3; ++i) sprintf(stmp,"%s %f", stmp, VolPar->CENTER_BASE);
SUMA/SUMA_niml.c:      for (i=0; i<12; ++i) sprintf(stmp,"%s %f", stmp, VolPar->MATVEC);
ccalc.c:            sprintf(expr,"%s %s", expr, argv[kar]);
ccalc.c:            sprintf(expr,"%s %s", expr, argv[kar]);