Don't include the bottom line of selection if blank

tests/sort_test.py

@@ -42,3 +42,18 @@ def test_sort_selection_does_not_include_eof(run, unsorted):
         h.await_cursor_position(x=0, y=1)
         h.press('^S')
     assert unsorted.read() == 'a\nb\nc\nd\n'
+
+
+def test_sort_does_not_include_blank_line_after(run, tmpdir):
+    f = tmpdir.join('f')
+    f.write('b\na\n\nd\nc\n')
+
+    with run(str(f)) as h, and_exit(h):
+        h.press('S-Down')
+        h.press('S-Down')
+        trigger_command_mode(h)
+        h.press_and_enter(':sort')
+        h.await_text('sorted!')
+        h.await_cursor_position(x=0, y=1)
+        h.press('^S')
+    assert f.read() == 'a\nb\n\nd\nc\n'