Don't include the bottom line of selection if blank

babi.py

@@ -1102,6 +1102,8 @@ class File:
     def sort_selection(self, margin: Margin) -> None:
         (s_y, _), (e_y, _) = self._get_selection()
         e_y = min(e_y + 1, len(self.lines) - 1)
+        if self.lines[e_y - 1] == '':
+            e_y -= 1
         self._sort(margin, s_y, e_y)
 
     DISPATCH = {

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'