patch 9.0.2188: cursor wrong after { in single line buffer

Problem:  cursor wrong after { in single line buffer
          (Edwin Chan)
Solution: do not place the cursor at the end for a single
          line buffer when moving backwards
          (Gary Johnson)

closes: #13780
closes: #13783

Signed-off-by: Gary Johnson <garyjohn@spocom.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/testdir/test_normal.vim b/src/testdir/test_normal.vim
index 6b889f4..90bedf1 100644
--- a/src/testdir/test_normal.vim
+++ b/src/testdir/test_normal.vim
@@ -4164,4 +4164,21 @@
   norm! z9765405999999999999
 endfunc
 
+" Test for { and } paragraph movements in a single line
+func Test_brace_single_line()
+  let text =<< trim [DATA]
+    foobar one two three
+  [DATA]
+
+  new
+  call setline(1, text)
+  1
+  norm! 0}
+
+  call assert_equal([0, 1, 20, 0], getpos('.'))
+  norm! {
+  call assert_equal([0, 1, 1, 0], getpos('.'))
+  bw!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab