Merge remote-tracking branch 'origin/feat/rsync-stderr-mode' into dev

# Conflicts:
#	RSYNC_COMPAT.md
#	src/shared/log.c
#	src/shared/log.h
#	tests/test_client_cli.c

src/shared/log.c

@@ -9,6 +9,7 @@ static const char* log_level_strings[] = {"DEBUG", "INFO", "WARN", "ERROR"};
 static LogLevel current_log_level = LOG_LEVEL_WARNING;
 static FILE* log_fp = NULL;
 static _Thread_local bool eight_bit_output;
+static LogStderrMode stderr_mode = LOG_STDERR_ERRORS;
 
 void set_log_level(LogLevel level) {
   current_log_level = level;
@@ -26,6 +27,14 @@ bool log_get_8_bit_output(void) {
   return eight_bit_output;
 }
 
+void log_set_stderr_mode(LogStderrMode mode) {
+  stderr_mode = mode;
+}
+
+LogStderrMode log_get_stderr_mode(void) {
+  return stderr_mode;
+}
+
 static inline void write_message(FILE* dest_io, LogLevel log_level, struct tm t, const char* format,
                                  va_list args) {
   fprintf(dest_io, "%04d-%02d-%02d %02d:%02d:%02d [%s]: ", t.tm_year + 1900, t.tm_mon + 1,
@@ -46,7 +55,7 @@ void log_message(LogLevel log_level, const char* format, ...) {
     return;
 
   FILE* dest_io = stdout;
-  if (log_level == LOG_LEVEL_ERROR) {
+  if (stderr_mode == LOG_STDERR_ALL || log_level == LOG_LEVEL_ERROR) {
     dest_io = stderr;
   }