From 102f34090db95de9e24c475fdea34b19031e9a94 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Fri, 6 Dec 2024 09:06:56 +0000
Subject: [PATCH 1/2] Do not write bracketed paste keys themselves if the pane
 has not asked for them.

---
 server-client.c | 2 +-
 tmux.h          | 7 ++++++-
 window.c        | 5 ++++-
 3 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/server-client.c b/server-client.c
index 98fdf1c9..a8911224 100644
--- a/server-client.c
+++ b/server-client.c
@@ -2581,7 +2581,7 @@ paste_key:
 	if (c->flags & CLIENT_READONLY)
 		goto out;
 	if (event->buf != NULL)
-		window_pane_paste(wp, event->buf, event->len);
+		window_pane_paste(wp, key, event->buf, event->len);
 	key = KEYC_NONE;
 	goto out;
 
diff --git a/tmux.h b/tmux.h
index c6e5f4d3..bc4df764 100644
--- a/tmux.h
+++ b/tmux.h
@@ -165,6 +165,10 @@ struct winlink;
 	 (((key) & KEYC_MASK_KEY) < KEYC_USER || \
 	  ((key) & KEYC_MASK_KEY) >= KEYC_USER_END))
 
+/* Is this a paste key? */
+#define KEYC_IS_PASTE(key) \
+	((key) == KEYC_PASTE_START || (key) == KEYC_PASTE_END)
+
 /* Multiple click timeout. */
 #define KEYC_CLICK_TIMEOUT 300
 
@@ -3160,7 +3164,8 @@ void		 window_pane_reset_mode_all(struct window_pane *);
 int		 window_pane_key(struct window_pane *, struct client *,
 		     struct session *, struct winlink *, key_code,
 		     struct mouse_event *);
-void		 window_pane_paste(struct window_pane *, char *, size_t);
+void		 window_pane_paste(struct window_pane *, key_code, char *,
+		     size_t);
 int		 window_pane_visible(struct window_pane *);
 int		 window_pane_exited(struct window_pane *);
 u_int		 window_pane_search(struct window_pane *, const char *, int,
diff --git a/window.c b/window.c
index 67e96fcf..35fc370b 100644
--- a/window.c
+++ b/window.c
@@ -1219,7 +1219,7 @@ window_pane_copy_key(struct window_pane *wp, key_code key)
 }
 
 void
-window_pane_paste(struct window_pane *wp, char *buf, size_t len)
+window_pane_paste(struct window_pane *wp, key_code key, char *buf, size_t len)
 {
 	if (!TAILQ_EMPTY(&wp->modes))
 		return;
@@ -1227,6 +1227,9 @@ window_pane_paste(struct window_pane *wp, char *buf, size_t len)
 	if (wp->fd == -1 || wp->flags & PANE_INPUTOFF)
 		return;
 
+	if (KEYC_IS_PASTE(key) && (~wp->screen->mode & MODE_BRACKETPASTE))
+		return;
+
 	log_debug("%s: %.*s", __func__, (int)len, buf);
 	bufferevent_write(wp->event, buf, len);
 

From 5c3cf2f08b0b10cb245a63ec8e0f5f39629e1f6b Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Fri, 6 Dec 2024 09:07:40 +0000
Subject: [PATCH 2/2] Preserve modifiers on backspace.

---
 input-keys.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/input-keys.c b/input-keys.c
index 4cad4f50..3fa38049 100644
--- a/input-keys.c
+++ b/input-keys.c
@@ -588,9 +588,10 @@ input_key(struct screen *s, struct bufferevent *bev, key_code key)
 		newkey = options_get_number(global_options, "backspace");
 		if (newkey == KEYC_BSPACE)
 			newkey = '\b';
-		log_debug("%s: key 0x%llx is backspace -> 0x%llx", __func__,
-		    key, newkey|(key & KEYC_MASK_FLAGS));
-		key = newkey|(key & KEYC_MASK_FLAGS);
+ 		newkey |= (key & (KEYC_MASK_FLAGS|KEYC_MASK_MODIFIERS));
+		log_debug("%s: key 0x%llx is backspace -> 0x%llx", __func__, key,
+		    newkey);
+		key = newkey;
 	}
 
 	/* Is this backtab? */
@@ -645,8 +646,7 @@ input_key(struct screen *s, struct bufferevent *bev, key_code key)
 	if (ike != NULL) {
 		log_debug("%s: found key 0x%llx: \"%s\"", __func__, key,
 		    ike->data);
-		if ((key == KEYC_PASTE_START || key == KEYC_PASTE_END) &&
-		    (~s->mode & MODE_BRACKETPASTE))
+		if (KEYC_IS_PASTE(key) && (~s->mode & MODE_BRACKETPASTE))
 			return (0);
 		if ((key & KEYC_META) && (~key & KEYC_IMPLIED_META))
 			input_key_write(__func__, bev, "\033", 1);