+#
+# Check decoding with an invalid multibyte sequence. We skip this test
+# if we don't have iconv support, since it requires converting from one
+# character set to another. Be sure we created the test file, though, because
+# it's required for the test right after it.
+#
+
+start_test 'invalid multibyte sequence'
+cat >`mhpath new` <<EOF
+From: Test12 <test12@example.com>
+To: Some User <user@example.com>
+Date: Mon, 31 Dec 2012 00:00:00
+Message-Id: 12@test.nmh
+Subject: =?UTF-8?B?MjAxMyBOZXcgWWVhcuKAmXMgRGVhbHMhIFN0YXJ0IHRoZSB5ZWFy?=
+ =?UTF-8?B?IHJpZ2h0IHdpdGggYmlnIHNhdmluZ3M=?=
+
+This message has an encoded Subject with an invalid character for
+single-byte character sets, but it (U+2019) is valid UTF-8.
+EOF
+
+if test "$ICONV_ENABLED" -eq 1; then
+ cat >"$expected" <<EOF
+ 12 12/31 Test12 2013 New Year?s Deals! Start the year right
+EOF
+
+ # Don't use run_prog here because it loses the environment setting.
+ LC_ALL=C scan -width 74 last >"$actual"
+ check "$expected" "$actual"
+fi
+
+#
+# Find out the width of our Unicode apostrophe (U+2019). Some implementations
+# say it has a width of 2, but that seems totally bizarre to me.
+#
+
+width=`${MH_OBJ_DIR}/test/getcwidth U+2019`
+if test $? -ne 0; then
+ echo "getcwidth failed to run"
+ exit 1
+fi
+
+# check scan width with a valid multibyte sequence
+start_test 'scan width with a valid multibyte sequence'
+if test "$width" -eq 1; then
+ cat >"$expected" <<EOF
+ 12 12/31 Test12 2013 New Year’s Deals! Start the year right
+EOF
+elif test "$width" -eq 2; then
+ cat >"$expected" <<EOF
+ 12 12/31 Test12 2013 New Year’s Deals! Start the year righ
+EOF
+else
+ echo "Unsupported width for U+2019: $width"
+fi
+
+run_prog scan -width 74 last >"$actual"
+check "$expected" "$actual"
+
+
+if test "$ICONV_ENABLED" -eq 1; then
+ start_test 'encoded single quote'
+ cat >"$expected" <<EOF
+ 13 01/13 sender@example.co <<The Subject: is an encoded single quote, 0x92.
+EOF
+
+ cat >"${MH_TEST_DIR}/Mail/inbox/13" <<EOF
+From: <sender@example.com>
+Subject: =?iso-8859-1?B?kgo=?=
+Date: Mon, 13 Jan 2014 14:18:33 -0600
+
+The Subject: is an encoded single quote, 0x92. cpstripped() didn't
+properly count it when decoding, which could be seen with:
+
+ scan -format '%(decode{subject})%{body}'
+
+The scan listing was two characters too long.
+EOF
+
+ run_prog scan -width 80 last >"$actual"
+ check "$expected" "$actual"
+fi
+
+
+start_test 'insufficient room for multicolumn character'
+#### This multibyte character requires 2 columns for display, but
+#### only 1 is availble. cpstripped() used to get this wrong.
+
+cat >"$expected" <<EOF
+
+EOF
+
+cat >`mhpath new` <<EOF
+Mime-Version: 1.0
+
+在 Should not see any of this text
+EOF
+
+run_prog scan -format '%{body}' -width 1 last >"$actual"