Do not use stderr for log file and don't call log_close when not needed.

2 files changed, 5 insertions, 3 deletions

diff --git a/log.c b/log.c
index 34855071..dbf9ee15 100644
--- a/log.c
+++ b/log.c
@@ -28,7 +28,7 @@
 #include "tmux.h"
 
 /* Log file, if needed. */
-FILE		*log_file = stderr;
+FILE		*log_file;
 
 /* Debug level. */
 int		 log_level = 0;
@@ -63,7 +63,7 @@ log_open(int level, const char *path)
 void
 log_close(void)
 {
-	if (log_file != stderr)
+	if (log_file != NULL)
 		fclose(log_file);
 
 	event_set_log_callback(NULL);
@@ -75,6 +75,9 @@ log_vwrite(const char *msg, va_list ap)
 {
 	char	*fmt;
 
+	if (log_file == NULL)
+		return;
+
 	if (asprintf(&fmt, "%s\n", msg) == -1)
 		exit(1);
 	if (vfprintf(log_file, fmt, ap) == -1)
diff --git a/tmux.c b/tmux.c
index a38f94d7..3f5e6cdf 100644
--- a/tmux.c
+++ b/tmux.c
@@ -73,7 +73,6 @@ logfile(const char *name)
 {
 	char	*path;
 
-	log_close();
 	if (debug_level > 0) {
 		xasprintf(&path, "tmux-%s-%ld.log", name, (long) getpid());
 		log_open(debug_level, path);