ruby_debug_print_node  125 compile.c         (ruby_debug_print_node(1, CPDEBUG, "", (NODE *)node), gl_node_level)), \
ruby_debug_print_node   21 debug.h        #define dpn(n)   ruby_debug_print_node(-1, 0, "", n)
ruby_debug_print_node   27 debug.h        NODE *ruby_debug_print_node(int level, int debug_level, const char *header, const NODE *node);