diff --git a/src/structs.h b/src/structs.h
index 95b5e62..6d6c1d8 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -1621,6 +1621,14 @@
 };
 #endif
 
+#define SNAP_HELP_IDX	0
+#ifdef FEAT_AUTOCMD
+# define SNAP_AUCMD_IDX 1
+# define SNAP_COUNT	2
+#else
+# define SNAP_COUNT	1
+#endif
+
 /*
  * Tab pages point to the top frame of each tab page.
  * Note: Most values are NOT valid for the current tab page!  Use "curwin",
@@ -1649,7 +1657,7 @@
     buf_T	    *(tp_diffbuf[DB_COUNT]);
     int		    tp_diff_invalid;	/* list of diffs is outdated */
 #endif
-    frame_T	    *tp_snapshot;    /* window layout snapshot */
+    frame_T	    *(tp_snapshot[SNAP_COUNT]);  /* window layout snapshots */
 #ifdef FEAT_EVAL
     dictitem_T	    tp_winvar;	    /* variable for "t:" Dictionary */
     dict_T	    tp_vars;	    /* internal variables, local to tab page */
@@ -2276,16 +2284,11 @@
  */
 typedef struct
 {
-    buf_T	*save_buf;	/* saved curbuf */
+    buf_T	*save_curbuf;	/* saved curbuf */
 #ifdef FEAT_AUTOCMD
-    buf_T	*new_curbuf;	/* buffer to be used */
-    win_T	*save_curwin;	/* saved curwin, NULL if it didn't change */
-    win_T	*new_curwin;	/* new curwin if save_curwin != NULL */
-    pos_T	save_cursor;	/* saved cursor pos of save_curwin */
-    linenr_T	save_topline;	/* saved topline of save_curwin */
-# ifdef FEAT_DIFF
-    int		save_topfill;	/* saved topfill of save_curwin */
-# endif
+    win_T	*save_curwin;	/* saved curwin */
+    win_T	*new_curwin;	/* new curwin */
+    buf_T	*new_curbuf;	/* new curbuf */
 #endif
 } aco_save_T;