Add new-session -X and attach-session -x to send SIGHUP to parent when

detaching (like detach-client -P). From Colin Watson in GitHub issue
1773.

1 files changed, 18 insertions, 9 deletions

diff --git a/cmd-attach-session.c b/cmd-attach-session.c
index bcd6d895..6de734e5 100644
--- a/cmd-attach-session.c
+++ b/cmd-attach-session.c
@@ -37,8 +37,8 @@ const struct cmd_entry cmd_attach_session_entry = {
 	.name = "attach-session",
 	.alias = "attach",
 
-	.args = { "c:dErt:", 0, 0 },
-	.usage = "[-dEr] [-c working-directory] " CMD_TARGET_SESSION_USAGE,
+	.args = { "c:dErt:x", 0, 0 },
+	.usage = "[-dErx] [-c working-directory] " CMD_TARGET_SESSION_USAGE,
 
 	/* -t is special */
 
@@ -48,7 +48,7 @@ const struct cmd_entry cmd_attach_session_entry = {
 
 enum cmd_retval
 cmd_attach_session(struct cmdq_item *item, const char *tflag, int dflag,
-    int rflag, const char *cflag, int Eflag)
+    int xflag, int rflag, const char *cflag, int Eflag)
 {
 	struct cmd_find_state	*current = &item->shared->current;
 	enum cmd_find_type	 type;
@@ -58,6 +58,7 @@ cmd_attach_session(struct cmdq_item *item, const char *tflag, int dflag,
 	struct winlink		*wl;
 	struct window_pane	*wp;
 	char			*cause;
+	enum msgtype		 msgtype;
 
 	if (RB_EMPTY(&sessions)) {
 		cmdq_error(item, "no sessions");
@@ -102,11 +103,15 @@ cmd_attach_session(struct cmdq_item *item, const char *tflag, int dflag,
 
 	c->last_session = c->session;
 	if (c->session != NULL) {
-		if (dflag) {
+		if (dflag || xflag) {
+			if (xflag)
+				msgtype = MSG_DETACHKILL;
+			else
+				msgtype = MSG_DETACH;
 			TAILQ_FOREACH(c_loop, &clients, entry) {
 				if (c_loop->session != s || c == c_loop)
 					continue;
-				server_client_detach(c_loop, MSG_DETACH);
+				server_client_detach(c_loop, msgtype);
 			}
 		}
 		if (!Eflag)
@@ -131,11 +136,15 @@ cmd_attach_session(struct cmdq_item *item, const char *tflag, int dflag,
 		if (rflag)
 			c->flags |= CLIENT_READONLY;
 
-		if (dflag) {
+		if (dflag || xflag) {
+			if (xflag)
+				msgtype = MSG_DETACHKILL;
+			else
+				msgtype = MSG_DETACH;
 			TAILQ_FOREACH(c_loop, &clients, entry) {
 				if (c_loop->session != s || c == c_loop)
 					continue;
-				server_client_detach(c_loop, MSG_DETACH);
+				server_client_detach(c_loop, msgtype);
 			}
 		}
 		if (!Eflag)
@@ -169,6 +178,6 @@ cmd_attach_session_exec(struct cmd *self, struct cmdq_item *item)
 	struct args	*args = self->args;
 
 	return (cmd_attach_session(item, args_get(args, 't'),
-	    args_has(args, 'd'), args_has(args, 'r'), args_get(args, 'c'),
-	    args_has(args, 'E')));
+	    args_has(args, 'd'), args_has(args, 'x'), args_has(args, 'r'),
+	    args_get(args, 'c'), args_has(args, 'E')));
 }