--- doc/bash.1~	Sun Apr 29 23:35:03 2001
+++ doc/bash.1	Sat Jul 21 21:48:33 2001
@@ -2301,6 +2301,9 @@
 \fB$((\fP\fIexpression\fP\fB))\fP
 .RE
 .PP
+The old format \fB$[\fP\fIexpression\fP\fB]\fP is deprecated and will
+be removed in upcoming versions of bash.
+.PP
 The
 .I expression
 is treated as if it were within double quotes, but a double quote