Added show current logging level in usage output

Fortune for naka's current commit: Small curse − 小凶

src/main.c

@@ -20,20 +20,24 @@ static const char* _compdate_readable()
 {
 	static const time_t comp = PROG_COMPILED_TIMESTAMP;
 
-	static _Thread_local char date[40] = {0};
-	debug_assert(sizeof(date) == 40);
+#define DATE_MAX 20
+	static _Thread_local char date[DATE_MAX] = {0};
+	debug_assert(sizeof(date) == DATE_MAX);
 
 	struct tm* time = gmtime(&comp);
 	if(!date[0]) {
 		usize w = strftime(date, sizeof(date), "%Y-%m-%d %H:%M:%S", time);
+		DBG(ifU(!w || w>=DATE_MAX) FATAL("Increase DATE_MAX, %lu is too low (strftime(): %lu)", DATE_MAX, w));
 		TRACE("size of hr time: %lu / %lu", w, sizeof(date));
 	}
 	return date;
+#undef DATE_MAX
 }
 
 static void pi_print_trace_infos(FILE* out)
 {
 	const char* name;
+	enum trace_level cmax = trace_max_level();
 	for(int i=0;i<(int)_TRACE_LEVEL_NUM;i++)
 	{
 		enum trace_level lv = (enum trace_level)i;
@@ -42,7 +46,7 @@ static void pi_print_trace_infos(FILE* out)
 			debug_assert(AS(lv, int) < AS(_TRACE_LEVEL_NUM, int) && AS(lv, int) >= 0);
 			const char* desc = lv[_trace_level_descriptions];
 			assert(desc);
-			fprintf(out, "-> level %d: \"%s\" - %s\n", i, name, desc);
+			fprintf(out, "-> level %d: \"%s\" - %s%s\n", i, name, desc, cmax==lv ? " (currently set)" : "");
 		}
 	}
 	enum trace_level def = _TRACE_LEVEL_DEFAULT;