rb_w32_spawn      250 include/ruby/win32.h extern rb_pid_t rb_w32_spawn(int, const char *, const char*);
rb_w32_spawn     4637 io.c           		   rb_w32_spawn(P_NOWAIT, cmd, 0))) == -1) {
rb_w32_spawn     1073 process.c          rb_w32_spawn(P_OVERLAY, (char *)str, 0);
rb_w32_spawn     1170 process.c      #define proc_spawn(str) rb_w32_spawn(P_NOWAIT, str, 0)