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When entering or leaving the alternate screen, discard any pending

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resizes. Improves flicking with scrollbars and programs that leave and
enter the alternate screen on every WINCH like nano. GitHub issue 4772.

Cvs: ----------------------------------------------------------------------
This commit is contained in:
nicm
2026-06-08 20:41:21 +00:00
parent 34fd261a4f
commit fe986a52d6
4 changed files with 24 additions and 14 deletions
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12
screen.c
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@@ -655,13 +655,13 @@ screen_reflow(struct screen *s, u_int new_x, u_int *cx, u_int *cy, int cursor)
* Enter alternative screen mode. A copy of the visible screen is saved and the
* history is not updated.
*/
void
int
screen_alternate_on(struct screen *s, struct grid_cell *gc, int cursor)
{
u_int sx, sy;
if (SCREEN_IS_ALTERNATE(s))
return;
return 0;
sx = screen_size_x(s);
sy = screen_size_y(s);
@@ -677,10 +677,12 @@ screen_alternate_on(struct screen *s, struct grid_cell *gc, int cursor)
s->saved_flags = s->grid->flags;
s->grid->flags &= ~GRID_HISTORY;
return 1;
}
/* Exit alternate screen mode and restore the copied grid. */
void
int
screen_alternate_off(struct screen *s, struct grid_cell *gc, int cursor)
{
u_int sx = screen_size_x(s), sy = screen_size_y(s);
@@ -709,7 +711,7 @@ screen_alternate_off(struct screen *s, struct grid_cell *gc, int cursor)
s->cx = screen_size_x(s) - 1;
if (s->cy > screen_size_y(s) - 1)
s->cy = screen_size_y(s) - 1;
return;
return 0;
}
/* Restore the saved grid. */
@@ -731,6 +733,8 @@ screen_alternate_off(struct screen *s, struct grid_cell *gc, int cursor)
s->cx = screen_size_x(s) - 1;
if (s->cy > screen_size_y(s) - 1)
s->cy = screen_size_y(s) - 1;
return 1;
}
/* Get mode as a string. */