+Test of input character set switching.
+
+\b 8859 character in ASCII mode: expect nothing useful. [coöpt]
+
+\cfg{input-charset}{ISO-8859-1}
+
+\b 8859 character in 8859 mode: expect the right thing. [coöpt]
+
+\cfg{input-charset}{UTF-8}
+
+\b 8859 character in UTF-8 mode: expect the wrong thing. [coöpt]
+
+\b UTF-8 sequence in UTF-8 mode: expect the right thing again. [coöpt]
+
+\cfg{input-charset}{ASCII}
+
+Back to ASCII again.
+