1 files changed, 3 insertions, 0 deletions

diff --git a/lib/utils_base.h b/lib/utils_base.h
index f40fdb0f..49e40a63 100644
--- a/lib/utils_base.h
+++ b/lib/utils_base.h
@@ -35,6 +35,9 @@ void print_thresholds(const char *, thresholds *);
 int check_range(double, range *);
 int get_status(double, thresholds *);
 
+/* All possible characters in a threshold range */
+#define NP_THRESHOLDS_CHARS "0123456789.:@~"
+
 char *np_escaped_string (const char *);
 
 void die (int, const char *, ...) __attribute__((noreturn,format(printf, 2, 3)));