updated for version 7.0017
diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index 17201b4..4879a64 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -1,4 +1,4 @@
-*options.txt* For Vim version 7.0aa. Last change: 2004 Sep 04
+*options.txt* For Vim version 7.0aa. Last change: 2004 Oct 07
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -954,6 +954,12 @@
prefer using ".bak", but make sure that you don't have files with
".bak" that you want to keep.
+ If you like to keep a lot of backups, you could use a BufWritePre
+ autocommand to change 'backupext' just before writing the file to
+ include a timestamp. >
+ :au BufWritePre * let &bex = '-' . strftime("%Y%b%d%X") . '~'
+< Use 'backupdir' to put the backup in a different directory.
+
*'backupskip'* *'bsk'*
'backupskip' 'bsk' string (default: "/tmp/*,$TMPDIR/*,$TMP/*,$TEMP/*")
global