patch 7.4.1037
Problem:    Using "q!" when there is a modified hidden buffer does not unload
            the current buffer, resulting in the need to abandon it again.
Solution:   When using "q!" unload the current buffer when needed. (Yasuhiro
            Matsumoto, Hirohito Higashi)
diff --git a/runtime/doc/editing.txt b/runtime/doc/editing.txt
index 5666e68..4c013e9 100644
--- a/runtime/doc/editing.txt
+++ b/runtime/doc/editing.txt
@@ -1105,10 +1105,10 @@
 			the last file in the argument list has not been
 			edited.  See |:confirm| and 'confirm'.  {not in Vi}
 
-:q[uit]!		Quit without writing, also when currently visible
-			buffers have changes.  Does not exit when this is the
-			last window and there is a changed hidden buffer.
-			In this case, the first changed hidden buffer becomes
+:q[uit]!		Quit without writing, also when currentl buffer has
+			changes.  If this is the last window and there is a
+			modified hidden buffer, the current buffer is
+			abandoned and the first changed hidden buffer becomes
 			the current buffer.
 			Use ":qall!" to exit always.