diff --git a/src/fold.c b/src/fold.c
index 1fe7c5a..6567906 100644
--- a/src/fold.c
+++ b/src/fold.c
@@ -740,7 +740,7 @@
     garray_T	*found_ga;
     fold_T	*found_fp = NULL;
     linenr_T	found_off = 0;
-    int		use_level = FALSE;
+    int		use_level;
     int		maybe_small = FALSE;
     int		level = 0;
     linenr_T	lnum = start;
@@ -757,6 +757,7 @@
 	gap = &curwin->w_folds;
 	found_ga = NULL;
 	lnum_off = 0;
+	use_level = FALSE;
 	for (;;)
 	{
 	    if (!foldFind(gap, lnum - lnum_off, &fp))
@@ -783,20 +784,21 @@
 	else
 	{
 	    lnum = found_fp->fd_top + found_fp->fd_len + found_off;
-	    did_one = TRUE;
 
 	    if (foldmethodIsManual(curwin))
 		deleteFoldEntry(found_ga,
 		    (int)(found_fp - (fold_T *)found_ga->ga_data), recursive);
 	    else
 	    {
-		if (found_fp->fd_top + found_off < first_lnum)
-		    first_lnum = found_fp->fd_top;
-		if (lnum > last_lnum)
+		if (first_lnum > found_fp->fd_top + found_off)
+		    first_lnum = found_fp->fd_top + found_off;
+		if (last_lnum < lnum)
 		    last_lnum = lnum;
-		parseMarker(curwin);
+		if (!did_one)
+		    parseMarker(curwin);
 		deleteFoldMarkers(found_fp, recursive, found_off);
 	    }
+	    did_one = TRUE;
 
 	    /* redraw window */
 	    changed_window_setting();
@@ -811,6 +813,10 @@
 	    redraw_curbuf_later(INVERTED);
 #endif
     }
+    else
+	/* Deleting markers may make cursor column invalid. */
+	check_cursor_col();
+
     if (last_lnum > 0)
 	changed_lines(first_lnum, (colnr_T)0, last_lnum, 0L);
 }
diff --git a/src/version.c b/src/version.c
index 5ad35f9..d6d660e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -677,6 +677,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    78,
+/**/
     77,
 /**/
     76,