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+To: vim_dev@googlegroups.com
+Subject: Patch 7.3.512
+Fcc: outbox
+From: Bram Moolenaar <Bram@moolenaar.net>
+Mime-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+------------
+
+Patch 7.3.512
+Problem: undofile() returns a useless name when passed an empty string.
+Solution: Return an empty string. (Christian Brabandt)
+Files: src/eval.c
+
+
+*** ../vim-7.3.511/src/eval.c 2012-04-25 18:24:24.000000000 +0200
+--- src/eval.c 2012-04-30 17:23:26.000000000 +0200
+***************
+*** 18259,18269 ****
+ rettv->v_type = VAR_STRING;
+ #ifdef FEAT_PERSISTENT_UNDO
+ {
+! char_u *ffname = FullName_save(get_tv_string(&argvars[0]), FALSE);
+
+! if (ffname != NULL)
+! rettv->vval.v_string = u_get_undo_file_name(ffname, FALSE);
+! vim_free(ffname);
+ }
+ #else
+ rettv->vval.v_string = NULL;
+--- 18259,18279 ----
+ rettv->v_type = VAR_STRING;
+ #ifdef FEAT_PERSISTENT_UNDO
+ {
+! char_u *fname = get_tv_string(&argvars[0]);
+
+! if (*fname == NUL)
+! {
+! /* If there is no file name there will be no undo file. */
+! rettv->vval.v_string = NULL;
+! }
+! else
+! {
+! char_u *ffname = FullName_save(fname, FALSE);
+!
+! if (ffname != NULL)
+! rettv->vval.v_string = u_get_undo_file_name(ffname, FALSE);
+! vim_free(ffname);
+! }
+ }
+ #else
+ rettv->vval.v_string = NULL;
+*** ../vim-7.3.511/src/version.c 2012-04-30 17:04:47.000000000 +0200
+--- src/version.c 2012-04-30 17:24:42.000000000 +0200
+***************
+*** 716,717 ****
+--- 716,719 ----
+ { /* Add new patch number below this line */
++ /**/
++ 512,
+ /**/
+
+--
+It is illegal for a driver to be blindfolded while operating a vehicle.
+ [real standing law in Alabama, United States of America]
+
+ /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net \\\
+/// sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
+\\\ an exciting new programming language -- http://www.Zimbu.org ///
+ \\\ help me help AIDS victims -- http://ICCF-Holland.org ///