From ad0aad21d5dcc7d8c09a6c76e85ae1e46cf6b0da Mon Sep 17 00:00:00 2001
From: Nicholas Marriott <nicm@openbsd.org>
Date: Mon, 27 Jul 2009 12:11:11 +0000
Subject: [PATCH] Add a key to delete to end of line at the prompt (^K in emacs
 mode, C/D in vi).

From Kalle Olavi Niemitalo.
---
 mode-key.c | 8 ++++++++
 status.c   | 6 ++++++
 tmux.1     | 1 +
 tmux.h     | 1 +
 4 files changed, 16 insertions(+)

diff --git a/mode-key.c b/mode-key.c
index 9e5720eb..b037f281 100644
--- a/mode-key.c
+++ b/mode-key.c
@@ -110,6 +110,12 @@ mode_key_lookup_vi(struct mode_key_data *mdata, int key)
 		return (MODEKEYCMD_BACKTOINDENTATION);
 	case '\033':
 		return (MODEKEYCMD_CLEARSELECTION);
+	case 'C':
+		if (mdata->flags & MODEKEY_CANEDIT)
+			mdata->flags |= MODEKEY_EDITMODE;
+		return (MODEKEYCMD_DELETETOENDOFLINE);
+	case 'D':
+		return (MODEKEYCMD_DELETETOENDOFLINE);
 	case 'j':
 	case KEYC_DOWN:
 		return (MODEKEYCMD_DOWN);
@@ -169,6 +175,8 @@ mode_key_lookup_emacs(struct mode_key_data *mdata, int key)
 	case '\027':
 	case 'w' | KEYC_ESCAPE:
 		return (MODEKEYCMD_COPYSELECTION);
+	case '\013':
+		return (MODEKEYCMD_DELETETOENDOFLINE);
 	case '\016':
 	case KEYC_DOWN:
 		return (MODEKEYCMD_DOWN);
diff --git a/status.c b/status.c
index 24d91204..a7aa4a6c 100644
--- a/status.c
+++ b/status.c
@@ -823,6 +823,12 @@ status_prompt_key(struct client *c, int key)
 			c->flags |= CLIENT_STATUS;
 		}
 		break;
+	case MODEKEYCMD_DELETETOENDOFLINE:
+		if (c->prompt_index < size) {
+			c->prompt_buffer[c->prompt_index] = '\0';
+			c->flags |= CLIENT_STATUS;
+		}
+		break;
 	case MODEKEYCMD_UP:
 		if (server_locked)
 			break;
diff --git a/tmux.1 b/tmux.1
index 54e46a3d..0ba9eec9 100644
--- a/tmux.1
+++ b/tmux.1
@@ -331,6 +331,7 @@ The following keys are supported as appropriate for the mode:
 .It Li "Cursor right" Ta "l" Ta "Right"
 .It Li "Start selection" Ta "Space" Ta "C-Space"
 .It Li "Cursor up" Ta "k" Ta "Up"
+.It Li "Delete to end of line" Ta "D or C" Ta "C-k"
 .It Li "Paste buffer" Ta "p" Ta "C-y"
 .El
 .Pp
diff --git a/tmux.h b/tmux.h
index 046e6a19..01db8690 100644
--- a/tmux.h
+++ b/tmux.h
@@ -365,6 +365,7 @@ enum mode_key_cmd {
 	MODEKEYCMD_COMPLETE,
 	MODEKEYCMD_COPYSELECTION,
 	MODEKEYCMD_DELETE,
+	MODEKEYCMD_DELETETOENDOFLINE,
 	MODEKEYCMD_DOWN,
 	MODEKEYCMD_ENDOFLINE,
 	MODEKEYCMD_LEFT,