The patch adds a per-window option "app-private-window". Tmux'
behaviour doesn't change if it is set "on". If set to "off", saving to
tmux' alternate screen is disabled, no saving and restoring to a saved
grid, and the history stays on.
As far as I know, this latter mode is compatible to "screen". I did not
find the spot where default values for options are defined. Propably
due to my using spaces instead of tabs, the patch is much bulkier than
it needs to be, sorry about that.
clemens
Index: cmd-set-option.c
===================================================================
--- cmd-set-option.c.orig
+++ cmd-set-option.c
@@ -138,6 +138,7 @@ const struct set_option_entry set_sessio
const struct set_option_entry set_window_option_table[] = {
{ "aggressive-resize", SET_OPTION_FLAG, 0, 0, NULL },
+ { "app-private-window", SET_OPTION_FLAG, 0, 0, NULL },
{ "automatic-rename", SET_OPTION_FLAG, 0, 0, NULL },
{ "clock-mode-colour", SET_OPTION_COLOUR, 0, 0, NULL },
{ "clock-mode-style",
Index: input.c
===================================================================
--- input.c.orig
+++ input.c
@@ -1178,27 +1178,29 @@ input_handle_sequence_sm(struct input_ct
case 1049:
if (wp->saved_grid != NULL)
break;
- sx = screen_size_x(s);
- sy = screen_size_y(s);
/*
* Enter alternative screen mode. A copy of the visible
* screen is saved and the history is not updated
*/
- wp->saved_grid = grid_create(sx, sy, 0);
- grid_duplicate_lines(
+ if (options_get_number(&wp->window->options,
"app-private-window")) {
+ sx = screen_size_x(s);
+ sy = screen_size_y(s);
+ wp->saved_grid = grid_create(sx, sy, 0);
+ grid_duplicate_lines(
wp->saved_grid, 0, s->grid, screen_hsize(s), sy);
- wp->saved_cx = s->cx;
- wp->saved_cy = s->cy;
- memcpy(&wp->saved_cell,
- &ictx->cell, sizeof wp->saved_cell);
+ wp->saved_cx = s->cx;
+ wp->saved_cy = s->cy;
+ memcpy(&wp->saved_cell,
+ &ictx->cell, sizeof wp->saved_cell);
- grid_view_clear(s->grid, 0, 0, sx, sy);
+ grid_view_clear(s->grid, 0, 0, sx, sy);
- wp->base.grid->flags &= ~GRID_HISTORY;
+ wp->base.grid->flags &= ~GRID_HISTORY;
- wp->flags |= PANE_REDRAW;
+ wp->flags |= PANE_REDRAW;
+ }
break;
default:
log_debug("unknown SM [%hhu]: %u", ictx->private, n);
@@ -1254,44 +1256,46 @@ input_handle_sequence_rm(struct input_ct
case 1049:
if (wp->saved_grid == NULL)
break;
- sx = screen_size_x(s);
- sy = screen_size_y(s);
/*
* Exit alternative screen mode and restore the copied
* grid.
*/
- /*
- * If the current size is bigger, temporarily resize
- * to the old size before copying back.
- */
- if (sy > wp->saved_grid->sy)
- screen_resize(s, sx, wp->saved_grid->sy);
-
- /* Restore the grid, cursor position and cell. */
- grid_duplicate_lines(
- s->grid, screen_hsize(s), wp->saved_grid, 0, sy);
- s->cx = wp->saved_cx;
- if (s->cx > screen_size_x(s) - 1)
- s->cx = screen_size_x(s) - 1;
- s->cy = wp->saved_cy;
- if (s->cy > screen_size_y(s) - 1)
- s->cy = screen_size_y(s) - 1;
- memcpy(&ictx->cell, &wp->saved_cell, sizeof ictx->cell);
-
- /*
- * Turn history back on (so resize can use it) and then
- * resize back to the current size.
- */
- wp->base.grid->flags |= GRID_HISTORY;
- if (sy > wp->saved_grid->sy)
- screen_resize(s, sx, sy);
+ if (options_get_number(&wp->window->options,
"app-private-window")) {
+ sx = screen_size_x(s);
+ sy = screen_size_y(s);
+ /*
+ * If the current size is bigger, temporarily resize
+ * to the old size before copying back.
+ */
+ if (sy > wp->saved_grid->sy)
+ screen_resize(s, sx, wp->saved_grid->sy);
+
+ /* Restore the grid, cursor position and cell. */
+ grid_duplicate_lines(
+ s->grid, screen_hsize(s), wp->saved_grid, 0, sy);
+ s->cx = wp->saved_cx;
+ if (s->cx > screen_size_x(s) - 1)
+ s->cx = screen_size_x(s) - 1;
+ s->cy = wp->saved_cy;
+ if (s->cy > screen_size_y(s) - 1)
+ s->cy = screen_size_y(s) - 1;
+ memcpy(&ictx->cell, &wp->saved_cell, sizeof ictx->cell);
+
+ /*
+ * Turn history back on (so resize can use it) and then
+ * resize back to the current size.
+ */
+ wp->base.grid->flags |= GRID_HISTORY;
+ if (sy > wp->saved_grid->sy)
+ screen_resize(s, sx, sy);
- grid_destroy(wp->saved_grid);
- wp->saved_grid = NULL;
+ grid_destroy(wp->saved_grid);
+ wp->saved_grid = NULL;
- wp->flags |= PANE_REDRAW;
+ wp->flags |= PANE_REDRAW;
+ }
break;
default:
log_debug("unknown RM [%hhu]: %u", ictx->private, n);
Index: tmux.1
===================================================================
--- tmux.1.orig
+++ tmux.1
@@ -1795,6 +1795,16 @@ this option is good for full-screen prog
.Dv SIGWINCH
and poor for interactive programs such as shells.
.Pp
+.It Xo Ic app-private-window
+.Op Ic on | off
+.Xc
+Every application initializing its window can have it all to itself.
+.Nm
+will save the previous window contents and restore it afterwards, the
+applications contents will not be saved in the history. This makes
+sense if full screen edit sessions are not supposed to clutter the
+history.
+.Pp
.It Xo Ic automatic-rename
.Op Ic on | off
.Xc
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