patch 7.4.1997
Problem:    Cannot easily scroll the quickfix window.
Solution:   Add ":cbottom".
diff --git a/src/testdir/test_quickfix.vim b/src/testdir/test_quickfix.vim
index d624baf..01e2110 100644
--- a/src/testdir/test_quickfix.vim
+++ b/src/testdir/test_quickfix.vim
@@ -1414,3 +1414,16 @@
   call delete('Xone', 'rf')
   call delete('Xtwo', 'rf')
 endfunc
+
+function Test_cbottom()
+  call setqflist([{'filename': 'foo', 'lnum': 42}]) 
+  copen
+  let wid = win_getid()
+  call assert_equal(1, line('.'))
+  wincmd w
+  call setqflist([{'filename': 'var', 'lnum': 24}], 'a') 
+  cbottom
+  call win_gotoid(wid)
+  call assert_equal(2, line('.'))
+  cclose
+endfunc