Output messages to stderr by default

Modify the default message handler to output to stderr instead of
stdout.

diff --git a/libass/ass_library.c b/libass/ass_library.c
index 9b6da02c4a8ff6e68ad8c1f05f7cc055b8ca6d3d..f464af7aaf3c5fbd827545ff08de3bb244738be8 100644 (file)
--- a/libass/ass_library.c
+++ b/libass/ass_library.c
@@ -32,9 +32,9 @@ static void ass_msg_handler(int level, char *fmt, va_list *va, void *data)
 {
     if (level > MSGL_INFO)
         return;
-    printf("[ass] "); 
-    vprintf(fmt, *va);
-    printf("\n");
+    fprintf(stderr, "[ass] ");
+    vfprintf(stderr, fmt, *va);
+    fprintf(stderr, "\n");
 }
 
 ass_library_t *ass_library_init(void)