env_delete       1873 hash.c             val = env_delete(obj, name);
env_delete       2050 hash.c         	env_delete(obj, nm);
env_delete       2186 hash.c         		env_delete(Qnil, RARRAY_PTR(keys)[i]);
env_delete       2253 hash.c         	    env_delete(Qnil, RARRAY_PTR(keys)[i]);
env_delete       2499 hash.c         	    env_delete(Qnil, key);
env_delete       2537 hash.c         	env_delete(env, RARRAY_PTR(keys)[i]);