warn about .Ns macros that have no effect because they are followed

by an isolated closing delimiter; inspired by mdoclint

1 files changed, 3 insertions, 1 deletions

diff --git a/mandoc.1 b/mandoc.1
index 1d731558..4d5eeb94 100644
--- a/mandoc.1
+++ b/mandoc.1
@@ -1175,7 +1175,9 @@ The paragraph macro is moved after the end of the list.
 .Pq mdoc
 An input line begins with an
 .Ic \&Ns
-macro.
+macro, or the next argument after an
+.Ic \&Ns
+macro is an isolated closing delimiter.
 The macro is ignored.
 .It Sy "blocks badly nested"
 .Pq mdoc