From 98e17d5117916fb607973a7ba79847d46380d4b3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=B2=81=E4=BA=AE?= <806034232@qq.com>
Date: Sun, 13 Nov 2022 02:21:04 +0800
Subject: [PATCH] Update log.c

When you add an event level of the same file object, the current event level is retained for the same file object.
---
 src/log.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/log.c b/src/log.c
index 1a7626e..5983aaa 100644
--- a/src/log.c
+++ b/src/log.c
@@ -114,7 +114,7 @@ void log_set_quiet(bool enable) {
 
 int log_add_callback(log_LogFn fn, void *udata, int level) {
   for (int i = 0; i < MAX_CALLBACKS; i++) {
-    if (!L.callbacks[i].fn) {
+    if (!L.callbacks[i].fn || L.callbacks[i].udata == udata) {
       L.callbacks[i] = (Callback) { fn, udata, level };
       return 0;
     }