Make lua_aug_save behave like augsrun save

Author: raphink

src/augtool.c

@@ -736,8 +736,14 @@ static int lua_aug_save(lua_State *L) {
     lua_checkargs(L, "aug_save", 0);
 
     r = aug_save(aug);
-    if (r < 0)
-        return lua_pusherror(L);
+    if (r == -1) {
+        lua_pushstring(L, "saving failed (run 'errors' for details)");
+        lua_error(L);
+    } else {
+        r = aug_match(aug, "/augeas/events/saved", NULL);
+        if (r > 0)
+            printf("Saved %d file(s)\n", r);
+    }
 
     /* return the number of results */
     return 0;