Included patch for persistent undo. Lots of changes and added test.
diff --git a/src/ex_cmds.h b/src/ex_cmds.h
index 1ef885a..f41e0f4 100644
--- a/src/ex_cmds.h
+++ b/src/ex_cmds.h
@@ -773,6 +773,8 @@
RANGE|DFLALL|EXTRA|NEEDARG|CMDWIN),
EX(CMD_rubyfile, "rubyfile", ex_rubyfile,
RANGE|FILE1|NEEDARG|CMDWIN),
+EX(CMD_rundo, "rundo", ex_rundo,
+ NEEDARG|EXTRA|XFILE),
EX(CMD_rviminfo, "rviminfo", ex_viminfo,
BANG|FILE1|TRLBAR|CMDWIN),
EX(CMD_substitute, "substitute", do_sub,
@@ -1061,6 +1063,8 @@
BANG|FILE1|ARGOPT|DFLALL|TRLBAR),
EX(CMD_wsverb, "wsverb", ex_wsverb,
EXTRA|NOTADR|NEEDARG),
+EX(CMD_wundo, "wundo", ex_wundo,
+ BANG|NEEDARG|EXTRA|XFILE),
EX(CMD_wviminfo, "wviminfo", ex_viminfo,
BANG|FILE1|TRLBAR|CMDWIN),
EX(CMD_xit, "xit", ex_exit,