+# check inc (m_getfld, actually) of very, very, very short message
+cat >>"$MH_TEST_DIR/msgbox" <<EOF
+From
+Date: Tue, 6 Sep 2016 08:52:32 -0400
+From: me@example.com
+
+a
+EOF
+
+run_test "inc -width 50 -file $MH_TEST_DIR/msgbox -truncate" \
+'Incorporating new mail into inbox...
+
+ 26+ 09/06 me@example.com <<a >>'
+rm -f "$MH_TEST_DIR/msgbox"
+
+# check inc (m_getfld, actually) of very, very short message
+cat >>"$MH_TEST_DIR/msgbox" <<EOF
+From
+Date: Tue, 6 Sep 2016 08:52:32 -0400
+From: me@example.com
+
+ab
+EOF
+
+run_test "inc -width 50 -file $MH_TEST_DIR/msgbox -truncate" \
+'Incorporating new mail into inbox...
+
+ 27+ 09/06 me@example.com <<ab >>'
+rm -f "$MH_TEST_DIR/msgbox"
+
+# check inc (m_getfld, actually) of very short message
+cat >>"$MH_TEST_DIR/msgbox" <<EOF
+From
+Date: Tue, 6 Sep 2016 08:52:32 -0400
+From: me@example.com
+
+abc
+EOF
+
+run_test "inc -width 50 -file $MH_TEST_DIR/msgbox -truncate" \
+'Incorporating new mail into inbox...
+
+ 28+ 09/06 me@example.com <<abc >>'
+rm -f "$MH_TEST_DIR/msgbox"
+
+# check inc (m_getfld, actually) of short message
+cat >>"$MH_TEST_DIR/msgbox" <<EOF
+From
+Date: Tue, 6 Sep 2016 08:52:32 -0400
+From: me@example.com
+
+abcd
+EOF
+
+run_test "inc -width 50 -file $MH_TEST_DIR/msgbox -truncate" \
+'Incorporating new mail into inbox...
+
+ 29+ 09/06 me@example.com <<abcd >>'
+rm -f "$MH_TEST_DIR/msgbox"
+