Imported from ../bash-2.0.tar.gz.

examples/functions/keep

@@ -0,0 +1,62 @@
+# From: Seth Chaiklin <psykseth@aau.dk>
+# To: chet@ins.CWRU.Edu
+# Subject: bash functions (sorta)
+
+#
+# keep:
+# usage: keep program
+# declare the a program should be "kept".  i.e. try to fg a stopped one
+# and only when that fails start a fresh program.
+#
+
+keep()
+{
+	case $# in
+	1|2)	;;
+	*) echo "usage: keep [alias] program" 1>&2 ; return 1;;
+	esac
+
+	# progname
+	pn=${1##*/}
+
+	# set up an alias for the kept program
+	if [ $# = 1 ]; then
+		alias "$pn=fg $1 2>/dev/null || $1"
+	else
+		alias "$1=fg $2 2>/dev/null || $2"
+	fi
+}
+
+#
+# unkeep:
+# usage: unkeep program
+# unset the alias set up by the keep function
+#
+
+unkeep()
+{
+	if [ $# != 1 ]; then
+		echo "usage: unkeep program"
+		return 2
+	fi
+
+	# unset the alias for the kept program
+	unalias "${1##*/}"
+}
+
+#
+# kept:
+# lists all kept programs in 'alias: program' form
+#
+
+kept()
+{
+	alias | grep "fg.*2>" | sed "s/alias \(.*\)='fg.*||\(.*\)'$/\1:\2/"
+}
+
+
+# some things that should be kept
+#keep /usr/local/bin/emacs
+#keep e ${EDITOR:-/usr/local/bin/emacs}
+#keep edit ${EDITOR:-/usr/local/bin/emacs}
+#keep /usr/local/bin/emm