--- Libc/Libc-825.26/stdlib/FreeBSD/getenv.3
+++ Libc/Libc-997.90.3/stdlib/FreeBSD/getenv.3
@@ -80,6 +80,8 @@
 respectively,
 with an equal sign
 .Dq Li \&= .
+The behavior is undefined when an equal sign appears at any other location in
+.Fa name .
 .Pp
 The
 .Fn getenv