Define NetBSD version 5.0 for .Nx to avoid groff warning This is a temporary workaround, the proper fix is to get groff to know newest BSD versions.
diff --git a/man/humanize_number.3 b/man/humanize_number.3
index fb91d3b..403e173 100644
--- a/man/humanize_number.3
+++ b/man/humanize_number.3
@@ -166,4 +166,6 @@ first appeared in
.Pp
.Fn dehumanize_number
first appeared in
+.\" FIXME: This should be in groff, but for now it avoids the warning.
+.ds operating-system-NetBSD-5.0 5.0
.Nx 5.0 .