Bash-4.4 distribution sources and documentation

tests/nameref13.sub

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+declare -nt r=a
+
+f()
+{
+	declare a
+	declare -n r=a
+	declare -p a r
+}
+
+f
+unset -f f
+
+f()
+{
+	declare a
+	declare -n r
+	r=a
+	declare -p a r
+}
+f
+echo $?
+
+unset -f f
+
+P=12345
+function foo
+{
+	typeset -n r
+	typeset -n r=P
+	typeset -p r
+}
+
+foo
+unset P foo
+
+ref=outside
+
+f()
+{
+	unset var
+	declare -n ref=var
+	declare -n ref;
+	declare -p ref;
+}
+f
+
+unset ref foo
+
+typeset -n r=a
+
+f()
+{
+	typeset a
+	typeset -n r
+	typeset -n r
+	r=a
+
+	typeset -p a r
+}
+f
+echo $?
+unset -n r
+unset -f f
+
+function foo
+{
+	typeset -n r
+	typeset -n r
+	typeset -p r
+}
+
+foo
+unset -f foo
+
+
+function foo
+{
+	typeset r
+	typeset -n r
+	typeset -p r
+}
+foo
+unset -f foo
+
+foo()
+{
+	typeset -n foo
+	typeset foo=12345
+	typeset -p foo
+}
+foo
+unset -f foo
+
+foo()
+{
+	typeset -n foo
+	typeset -n foo=12345
+	typeset -p foo
+}
+foo
+unset -f foo
+