patch 7.4.1735
Problem: It is not possible to only see part of the message history. It is
not possible to clear messages.
Solution: Add a count to ":messages" and a clear argument. (Yasuhiro
Matsumoto)
diff --git a/src/testdir/test_messages.vim b/src/testdir/test_messages.vim
new file mode 100644
index 0000000..4d7e411
--- /dev/null
+++ b/src/testdir/test_messages.vim
@@ -0,0 +1,42 @@
+" Tests for :messages
+
+function Test_messages()
+ let oldmore = &more
+ try
+ set nomore
+
+ let arr = map(range(10), '"hello" . v:val')
+ for s in arr
+ echomsg s | redraw
+ endfor
+ let result = ''
+
+ redir => result
+ 2messages | redraw
+ redir END
+
+ " get last two messages
+ let msg = split(result, "\n")[1:][-2:]
+ call assert_equal(["hello8", "hello9"], msg)
+
+ " clear messages without last one
+ 1messages clear
+ redir => result
+ redraw | 1messages
+ redir END
+ " get last last message
+ let msg = split(result, "\n")[1:][-1:]
+ call assert_equal(['hello9'], msg)
+
+ " clear all messages
+ messages clear
+ redir => result
+ redraw | 1messages
+ redir END
+ " get last last message
+ let msg = split(result, "\n")[1:][-1:]
+ call assert_equal([], msg)
+ finally
+ let &more = oldmore
+ endtry
+endfunction