#! /bin/sh -e

if [ $# -eq 3 -a "$2" = '-d' ]; then
    pdir="-d $3"
elif [ $# -ne 1 ]; then
    echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
    exit 1
fi
case "$1" in
    -patch) patch $pdir -f --no-backup-if-mismatch -p1 < $0;;
    -unpatch) patch $pdir -f --no-backup-if-mismatch -R -p1 < $0;;
    *)
	echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
	exit 1
esac
exit 0

# DP: document deprecated syntax for arithmetic evaluation.

diff -urb bash.orig/doc/bash.1 bash/doc/bash.1
--- bash.orig/doc/bash.1	2003-09-25 21:42:45.000000000 +0200
+++ bash/doc/bash.1	2003-09-28 00:24:17.000000000 +0200
@@ -2533,6 +2533,9 @@
 \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