From 1e5f93b7b633b47518e57cfb8b060069cf6cc9f3 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Wed, 14 Jan 2026 19:43:43 +0000
Subject: [PATCH] Add -e flag to command-prompt to close if empty, from Dane
 Jensen in GitHub issue 4812.

---
 cmd-command-prompt.c | 10 ++++++----
 status.c             |  5 +++++
 tmux.1               |  6 +++++-
 tmux.h               |  1 +
 4 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/cmd-command-prompt.c b/cmd-command-prompt.c
index 85a1bf8a..e5c2b12c 100644
--- a/cmd-command-prompt.c
+++ b/cmd-command-prompt.c
@@ -42,8 +42,8 @@ const struct cmd_entry cmd_command_prompt_entry = {
 	.name = "command-prompt",
 	.alias = NULL,
 
-	.args = { "1bFkliI:Np:t:T:", 0, 1, cmd_command_prompt_args_parse },
-	.usage = "[-1bFkliN] [-I inputs] [-p prompts] " CMD_TARGET_CLIENT_USAGE
+	.args = { "1beFiklI:Np:t:T:", 0, 1, cmd_command_prompt_args_parse },
+	.usage = "[-1beFiklN] [-I inputs] [-p prompts] " CMD_TARGET_CLIENT_USAGE
 		 " [-T prompt-type] [template]",
 
 	.flags = CMD_CLIENT_TFLAG,
@@ -84,7 +84,7 @@ cmd_command_prompt_exec(struct cmd *self, struct cmdq_item *item)
 	struct client			*tc = cmdq_get_target_client(item);
 	struct cmd_find_state		*target = cmdq_get_target(item);
 	const char			*type, *s, *input;
-	struct cmd_command_prompt_cdata	*cdata;
+	struct cmd_command_prompt_cdata *cdata;
 	char				*tmp, *prompts, *prompt, *next_prompt;
 	char				*inputs = NULL, *next_input;
 	u_int				 count = args_count(args);
@@ -163,6 +163,8 @@ cmd_command_prompt_exec(struct cmd *self, struct cmdq_item *item)
 		cdata->flags |= PROMPT_INCREMENTAL;
 	else if (args_has(args, 'k'))
 		cdata->flags |= PROMPT_KEY;
+	else if (args_has(args, 'e'))
+		cdata->flags |= PROMPT_BSPACE_EXIT;
 	status_prompt_set(tc, target, cdata->prompts[0].prompt,
 	    cdata->prompts[0].input, cmd_command_prompt_callback,
 	    cmd_command_prompt_free, cdata, cdata->flags, cdata->prompt_type);
@@ -234,7 +236,7 @@ out:
 static void
 cmd_command_prompt_free(void *data)
 {
-	struct cmd_command_prompt_cdata	*cdata = data;
+	struct cmd_command_prompt_cdata *cdata = data;
 	u_int				 i;
 
 	for (i = 0; i < cdata->count; i++) {
diff --git a/status.c b/status.c
index 79ce9cad..edbb04ad 100644
--- a/status.c
+++ b/status.c
@@ -1383,6 +1383,11 @@ process_key:
 		break;
 	case KEYC_BSPACE:
 	case 'h'|KEYC_CTRL:
+		if (c->prompt_flags & PROMPT_BSPACE_EXIT && size == 0) {
+			if (c->prompt_inputcb(c, c->prompt_data, NULL, 1) == 0)
+				status_prompt_clear(c);
+			break;
+		}
 		if (c->prompt_index != 0) {
 			if (c->prompt_index == size)
 				c->prompt_buffer[--c->prompt_index].size = 0;
diff --git a/tmux.1 b/tmux.1
index 4b88e203..bf051794 100644
--- a/tmux.1
+++ b/tmux.1
@@ -6716,7 +6716,7 @@ See
 for possible values for
 .Ar prompt-type .
 .It Xo Ic command-prompt
-.Op Fl 1bFiklN
+.Op Fl 1beFiklN
 .Op Fl I Ar inputs
 .Op Fl p Ar prompts
 .Op Fl t Ar target-client
@@ -6789,6 +6789,10 @@ makes the prompt only accept numeric key presses.
 .Fl i
 executes the command every time the prompt input changes instead of when the
 user exits the command prompt.
+.Fl e
+makes
+.Em BSpace
+cancel an empty prompt.
 .Pp
 .Fl T
 tells
diff --git a/tmux.h b/tmux.h
index a3604935..e14113ff 100644
--- a/tmux.h
+++ b/tmux.h
@@ -2054,6 +2054,7 @@ struct client {
 #define PROMPT_KEY 0x10
 #define PROMPT_ACCEPT 0x20
 #define PROMPT_QUOTENEXT 0x40
+#define PROMPT_BSPACE_EXIT 0x80
 	int			 prompt_flags;
 	enum prompt_type	 prompt_type;
 	int			 prompt_cursor;