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Add a clear-on-attach option which when turned off scrolls away the

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existing terminal state instead of entering the alternate screen. This
is useful in environments where tmux is started as a login shell but it
is important that any pre-tmux messages are still visible. GitHub issue
5508 from Josef Řídký.
This commit is contained in:
nicm
2026-08-25 08:37:08 +00:00
committed by tmux update bot
parent 6f4c9b32af
commit 4157b64754
5 changed files with 48 additions and 11 deletions
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12
options-table.c
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@@ -1,4 +1,4 @@
/* $OpenBSD: options-table.c,v 1.242 2026/07/27 08:03:01 nicm Exp $ */
/* $OpenBSD: options-table.c,v 1.243 2026/08/25 08:37:08 nicm Exp $ */
/*
* Copyright (c) 2011 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -306,6 +306,16 @@ const struct options_table_entry options_table[] = {
"When this is reached, the oldest buffer is deleted."
},
{ .name = "clear-on-attach",
.type = OPTIONS_TABLE_FLAG,
.scope = OPTIONS_TABLE_SERVER,
.default_num = 1,
.text = "Whether to use the alternate screen and clear it when "
"a client is attached. When disabled, tmux does not "
"enter the alternate screen on attach so terminal "
"content before tmux remains in scrollback."
},
{ .name = "command-alias",
.type = OPTIONS_TABLE_STRING,
.scope = OPTIONS_TABLE_SERVER,