patch 8.0.0956: scrolling in a terminal window has flicker
Problem: Scrolling in a terminal hwindow as flicker when the Normal
background differs from the terminal window background.
Solution: Set the attribute to clear with.
diff --git a/src/proto/screen.pro b/src/proto/screen.pro
index d560b7e..4e89293 100644
--- a/src/proto/screen.pro
+++ b/src/proto/screen.pro
@@ -45,9 +45,9 @@
void windgoto(int row, int col);
void setcursor(void);
int win_ins_lines(win_T *wp, int row, int line_count, int invalid, int mayclear);
-int win_del_lines(win_T *wp, int row, int line_count, int invalid, int mayclear);
-int screen_ins_lines(int off, int row, int line_count, int end, win_T *wp);
-int screen_del_lines(int off, int row, int line_count, int end, int force, win_T *wp);
+int win_del_lines(win_T *wp, int row, int line_count, int invalid, int mayclear, int clear_attr);
+int screen_ins_lines(int off, int row, int line_count, int end, int clear_attr, win_T *wp);
+int screen_del_lines(int off, int row, int line_count, int end, int force, int attr, win_T *wp);
int showmode(void);
void unshowmode(int force);
void clearmode(void);