updated for version 7.0224
diff --git a/src/structs.h b/src/structs.h
index 8f554fe..26fee9a 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -1249,13 +1249,16 @@
* The following only used in undo.c.
*/
u_header_T *b_u_oldhead; /* pointer to oldest header */
- u_header_T *b_u_newhead; /* pointer to newest header */
+ u_header_T *b_u_newhead; /* pointer to newest header; may not be valid
+ if b_u_curhead is not NULL */
u_header_T *b_u_curhead; /* pointer to current header */
int b_u_numhead; /* current number of headers */
int b_u_synced; /* entry lists are synced */
long b_u_seq_last; /* last used undo sequence number plus 1 */
long b_u_seq_cur; /* undo sequence number of last header used
plus 1 */
+ time_t b_u_seq_time; /* uh_time of the last header used plus 1 or
+ uh_time of current header */
/*
* variables for "U" command in undo.c