do not capture

diff --git a/src/rrd_graph.c b/src/rrd_graph.c
index 3d1d63b2fbdf3d4418bf56fec8cb79f8f234691a..2737692e241285c93c039147431a9a0202a7a6df 100644 (file)
--- a/src/rrd_graph.c
+++ b/src/rrd_graph.c
@@ -5082,7 +5082,7 @@ static int bad_format_check(const char *pattern, char *fmt) {
 int bad_format_imginfo(char *fmt){
     return bad_format_check("^" SAFE_STRING "%s" SAFE_STRING "%lu" SAFE_STRING "%lu" SAFE_STRING "$",fmt);
 }
-#define FLOAT_STRING "%[-+ 0#]?[0-9]*([.][0-9]+)?l[eEfF]"
+#define FLOAT_STRING "%[-+ 0#]?[0-9]*(?:[.][0-9]+)?l[eEfF]"
 
 int bad_format_axis(char *fmt){
     return bad_format_check("^" SAFE_STRING FLOAT_STRING SAFE_STRING "$",fmt);