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Add support for applications to use synchronized output mode (DECSET

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2026) to prevent screen tearing during rapid updates. When an
application sends SM ?2026, tmux buffers output until RM ?2026 is received
or a 1-second timeout expires.

From Chris Lloyd with the assistance of Claude Code, GitHub issue 4744.
This commit is contained in:
nicm
2025-12-17 11:49:29 +00:00
parent ce7eb22e3a
commit 1c7e164c22
7 changed files with 87 additions and 1 deletions
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3
screen-redraw.c
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@@ -898,6 +898,9 @@ screen_redraw_draw_pane(struct screen_redraw_ctx *ctx, struct window_pane *wp)
struct grid_cell defaults;
u_int i, j, top, x, y, width;
if (wp->base.mode & MODE_SYNC)
screen_write_stop_sync(wp);
log_debug("%s: %s @%u %%%u", __func__, c->name, w->id, wp->id);
if (wp->xoff + wp->sx <= ctx->ox || wp->xoff >= ctx->ox + ctx->sx)