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--- 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
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