preliminary support for undo

1 files changed, 4 insertions, 0 deletions

diff --git a/screen.c b/screen.c
index 3cbfe12..93dd459 100644
--- a/screen.c
+++ b/screen.c
@@ -408,6 +408,10 @@ void init_screen(){
 	cutbuf.sz = 0;
 	cutbuf.l = NULL;
 	cutbuf.num = 0;
+	
+	undo_sz = 0;
+	undo_cur = -1;
+	undo_lst = -1;
 }
 
 void find_nonblank_rect(int *x1, int *y1, int *x2, int *y2){