Allow U+F8FF to be typed

U+F8FF is the last character in the private use area, but it's also the
codepoint used for the Apple symbol (), which is typeable on US
keyboards in OS X, and so should actually work.

tests/generic.expect

@@ -0,0 +1,13 @@
+# vim: set filetype=expect:
+#
+# General tests that don't belong elsewhere
+
+spawn $fish
+
+expect_prompt
+
+# ensure the Apple key () is typeable
+send_line "echo "
+expect_prompt "" {} unmatched {
+    puts stderr "Couldn't type apple key ()"
+}