Added the undofile() function. Updated runtime files.
diff --git a/src/undo.c b/src/undo.c
index 88c0305..34140f2 100644
--- a/src/undo.c
+++ b/src/undo.c
@@ -100,7 +100,6 @@
static void u_freeentries __ARGS((buf_T *buf, u_header_T *uhp, u_header_T **uhpp));
static void u_freeentry __ARGS((u_entry_T *, long));
#ifdef FEAT_PERSISTENT_UNDO
-static char_u *u_get_undo_file_name __ARGS((char_u *, int reading));
static void corruption_error __ARGS((char *msg, char_u *file_name));
static void u_free_uhp __ARGS((u_header_T *uhp));
static int serialize_uep __ARGS((u_entry_T *uep, FILE *fp));
@@ -698,7 +697,7 @@
* When "reading" is FALSE use the first name where the directory exists.
* Returns NULL when there is no place to write or no file to read.
*/
- static char_u *
+ char_u *
u_get_undo_file_name(buf_ffname, reading)
char_u *buf_ffname;
int reading;