    (join-string 
     (list 
      "-debugger"
-     (case 3
+     (case 4
 
        (0 "-lang java -build /home/pad/pfff/tests/java/codegraph")
        (1 "-lang cmt -build /home/pad/pfff/tests/ml/cmt")
        (2 ".")
        (3 "-lang php -build /home/pad/pfff/tests/php/codegraph")
+       (4 "-lang c -build /home/pad/plan9/include /home/pad/plan9/lib_graphics")
        )
      )
     )

     lang_sql/parsing
     lang_html/parsing
     lang_cpp/parsing
     lang_java/parsing
      lang_java/analyze
     lang_clang/parsing

     h_version-control
     h_visualization
     h_program-lang
     graph_code
     matcher
     lang_ml/parsing
      lang_ml/analyze
