From 4a926e489b8497ca1ed6f188aacfa0215b720371 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Tue, 28 Apr 2026 10:01:07 +0000
Subject: [PATCH] Make C-[ have the same bindings as Escape for terminals with
 extended keys where they are different, GitHub issue 5035 from Eric NICOLAS.

---
 key-bindings.c | 2 ++
 menu.c         | 1 +
 mode-tree.c    | 1 +
 status.c       | 3 +++
 4 files changed, 7 insertions(+)

diff --git a/key-bindings.c b/key-bindings.c
index 16e77f52..f61d372d 100644
--- a/key-bindings.c
+++ b/key-bindings.c
@@ -512,6 +512,7 @@ key_bindings_init(void)
 		"bind -Tcopy-mode C-v { send -X page-down }",
 		"bind -Tcopy-mode C-w { send -X copy-pipe-and-cancel }",
 		"bind -Tcopy-mode Escape { send -X cancel }",
+		"bind -Tcopy-mode C-[ { send -X cancel }",
 		"bind -Tcopy-mode Space { send -X page-down }",
 		"bind -Tcopy-mode , { send -X jump-reverse }",
 		"bind -Tcopy-mode \\; { send -X jump-again }",
@@ -585,6 +586,7 @@ key_bindings_init(void)
 		"bind -Tcopy-mode-vi C-v { send -X rectangle-toggle }",
 		"bind -Tcopy-mode-vi C-y { send -X scroll-up }",
 		"bind -Tcopy-mode-vi Escape { send -X clear-selection }",
+		"bind -Tcopy-mode-vi C-[ { send -X clear-selection }",
 		"bind -Tcopy-mode-vi Space { send -X begin-selection }",
 		"bind -Tcopy-mode-vi '$' { send -X end-of-line }",
 		"bind -Tcopy-mode-vi , { send -X jump-reverse }",
diff --git a/menu.c b/menu.c
index 9ae300ed..4f122831 100644
--- a/menu.c
+++ b/menu.c
@@ -471,6 +471,7 @@ menu_key_cb(struct client *c, void *data, struct key_event *event)
 	case '\r':
 		goto chosen;
 	case '\033': /* Escape */
+	case '['|KEYC_CTRL:
 	case 'c'|KEYC_CTRL:
 	case 'g'|KEYC_CTRL:
 	case 'q':
diff --git a/mode-tree.c b/mode-tree.c
index 835f4219..bf0b163c 100644
--- a/mode-tree.c
+++ b/mode-tree.c
@@ -1276,6 +1276,7 @@ mode_tree_key(struct mode_tree_data *mtd, struct client *c, key_code *key,
 	switch (*key) {
 	case 'q':
 	case '\033': /* Escape */
+	case '['|KEYC_CTRL:
 	case 'g'|KEYC_CTRL:
 		return (1);
 	case KEYC_F1:
diff --git a/status.c b/status.c
index f1e74c91..fd5a0e3d 100644
--- a/status.c
+++ b/status.c
@@ -1053,6 +1053,7 @@ status_prompt_translate_key(struct client *c, key_code key, key_code *new_key)
 			*new_key = key;
 			return (1);
 		case '\033': /* Escape */
+		case '['|KEYC_CTRL:
 			c->prompt_mode = PROMPT_COMMAND;
 			if (c->prompt_index != 0)
 				c->prompt_index--;
@@ -1085,6 +1086,7 @@ status_prompt_translate_key(struct client *c, key_code key, key_code *new_key)
 		c->flags |= CLIENT_REDRAWSTATUS;
 		return (0);
 	case '\033': /* Escape */
+	case '['|KEYC_CTRL:
 		return (0);
 	}
 
@@ -1652,6 +1654,7 @@ process_key:
 		free(s);
 		break;
 	case '\033': /* Escape */
+	case '['|KEYC_CTRL:
 	case 'c'|KEYC_CTRL:
 	case 'g'|KEYC_CTRL:
 		if (c->prompt_inputcb(c, c->prompt_data, NULL, 1) == 0)