Comment on the effective meaning of ttl=0

diff --git a/bin/khatus_bar b/bin/khatus_bar
index ed3d8c4..bddf0b9 100755 (executable)
--- a/bin/khatus_bar
+++ b/bin/khatus_bar
@@ -51,6 +51,7 @@ function Data_get(src, key, ttl,    time, age, is_expired) {
     time = Data_get_time()
     A_time[src, key] = time
     age = time - M_time[src, key]
+    # ttl = 0 => forever
     is_expired = ttl && age > ttl
     return is_expired ? "" : Data[src, key]
 }