patch 9.1.0228: Two unrelated things are tested by a single test

Problem:  Two unrelated things are tested by a single test.
Solution: Split it into two, restoring the old Test_brace_single_line().
          Add missing cleanup to some tests.
          (zeertzjq)

closes: #14323

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index 4eaedc2..806f5f0 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -1,4 +1,4 @@
-*options.txt*	For Vim version 9.1.  Last change: 2024 Mar 28
+*options.txt*	For Vim version 9.1.  Last change: 2024 Mar 29
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -7502,8 +7502,7 @@
 	highlighted with |hl-NonText|.
 	You may also want to add "lastline" to the 'display' option to show as
 	much of the last line as possible.
-	NOTE: only partly implemented, currently works with CTRL-E, CTRL-Y,
-	CTRL-D, CTRL-U, CTRL-F, CTRL-B and scrolling with the mouse.
+	NOTE: partly implemented, doesn't work yet for |gj| and |gk|.
 
 					*'softtabstop'* *'sts'*
 'softtabstop' 'sts'	number	(default 0)