termux-packages/packages/tmux/33298d6df67e2ba3d90abdc94250eeaa963c3730.patch

From 33298d6df67e2ba3d90abdc94250eeaa963c3730 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Fri, 3 May 2019 14:51:30 +0000
Subject: [PATCH] Instead of processing keys all together, put them up on the
 client command queue so they are ordered correctly with the commands that
 they execute.

---
 server-client.c | 63 ++++++++++++++++++++++++++++++-------------------
 tmux.h          | 13 +++++++---
 tty-keys.c      | 60 +++++++++++++++++++++++++++-------------------
 3 files changed, 85 insertions(+), 51 deletions(-)

diff --git a/server-client.c b/server-client.c
index 4cd5be745..a3d6aebf5 100644
--- a/server-client.c
+++ b/server-client.c
@@ -35,7 +35,7 @@
 static void	server_client_free(int, short, void *);
 static void	server_client_check_focus(struct window_pane *);
 static void	server_client_check_resize(struct window_pane *);
-static key_code	server_client_check_mouse(struct client *);
+static key_code	server_client_check_mouse(struct client *, struct key_event *);
 static void	server_client_repeat_timer(int, short, void *);
 static void	server_client_click_timer(int, short, void *);
 static void	server_client_check_exit(struct client *);
@@ -407,10 +407,10 @@ server_client_exec(struct client *c, const char *cmd)
 
 /* Check for mouse keys. */
 static key_code
-server_client_check_mouse(struct client *c)
+server_client_check_mouse(struct client *c, struct key_event *event)
 {
+	struct mouse_event	*m = &event->m;
 	struct session		*s = c->session;
-	struct mouse_event	*m = &c->tty.mouse;
 	struct winlink		*wl;
 	struct window_pane	*wp;
 	u_int			 x, y, b, sx, sy, px, py;
@@ -419,7 +419,13 @@ server_client_check_mouse(struct client *c)
 	struct timeval		 tv;
 	struct style_range	*sr;
 	enum { NOTYPE, MOVE, DOWN, UP, DRAG, WHEEL, DOUBLE, TRIPLE } type;
-	enum { NOWHERE, PANE, STATUS, STATUS_LEFT, STATUS_RIGHT, STATUS_DEFAULT, BORDER } where;
+	enum { NOWHERE,
+	       PANE,
+	       STATUS,
+	       STATUS_LEFT,
+	       STATUS_RIGHT,
+	       STATUS_DEFAULT,
+	       BORDER } where;
 
 	type = NOTYPE;
 	where = NOWHERE;
@@ -976,11 +982,17 @@ server_client_assume_paste(struct session *s)
 	return (0);
 }
 
-/* Handle data key input from client. */
-void
-server_client_handle_key(struct client *c, key_code key)
+/*
+ * Handle data key input from client. This owns and can modify the key event it
+ * is given and is responsible for freeing it.
+ */
+enum cmd_retval
+server_client_key_callback(struct cmdq_item *item, void *data)
 {
-	struct mouse_event		*m = &c->tty.mouse;
+	struct client			*c = item->client;
+	struct key_event		*event = data;
+	key_code			 key = event->key;
+	struct mouse_event		*m = &event->m;
 	struct session			*s = c->session;
 	struct winlink			*wl;
 	struct window			*w;
@@ -995,7 +1007,7 @@ server_client_handle_key(struct client *c, key_code key)
 
 	/* Check the client is good to accept input. */
 	if (s == NULL || (c->flags & (CLIENT_DEAD|CLIENT_SUSPENDED)) != 0)
-		return;
+		goto out;
 	wl = s->curw;
 	w = wl->window;
 
@@ -1007,11 +1019,11 @@ server_client_handle_key(struct client *c, key_code key)
 	/* Number keys jump to pane in identify mode. */
 	if (c->flags & CLIENT_IDENTIFY && key >= '0' && key <= '9') {
 		if (c->flags & CLIENT_READONLY)
-			return;
+			goto out;
 		window_unzoom(w);
 		wp = window_pane_at_index(w, key - '0');
 		server_client_clear_identify(c, wp);
-		return;
+		goto out;
 	}
 
 	/* Handle status line. */
@@ -1021,19 +1033,19 @@ server_client_handle_key(struct client *c, key_code key)
 	}
 	if (c->prompt_string != NULL) {
 		if (c->flags & CLIENT_READONLY)
-			return;
+			goto out;
 		if (status_prompt_key(c, key) == 0)
-			return;
+			goto out;
 	}
 
 	/* Check for mouse keys. */
 	m->valid = 0;
 	if (key == KEYC_MOUSE) {
 		if (c->flags & CLIENT_READONLY)
-			return;
-		key = server_client_check_mouse(c);
+			goto out;
+		key = server_client_check_mouse(c, event);
 		if (key == KEYC_UNKNOWN)
-			return;
+			goto out;
 
 		m->valid = 1;
 		m->key = key;
@@ -1044,10 +1056,9 @@ server_client_handle_key(struct client *c, key_code key)
 		 */
 		if (key == KEYC_DRAGGING) {
 			c->tty.mouse_drag_update(c, m);
-			return;
+			goto out;
 		}
-	} else
-		m->valid = 0;
+	}
 
 	/* Find affected pane. */
 	if (!KEYC_IS_MOUSE(key) || cmd_find_from_mouse(&fs, m, 0) != 0)
@@ -1086,7 +1097,7 @@ server_client_handle_key(struct client *c, key_code key)
 	    strcmp(table->name, "prefix") != 0) {
 		server_client_set_key_table(c, "prefix");
 		server_status_client(c);
-		return;
+		goto out;
 	}
 	flags = c->flags;
 
@@ -1144,9 +1155,9 @@ server_client_handle_key(struct client *c, key_code key)
 		server_status_client(c);
 
 		/* Execute the key binding. */
-		key_bindings_dispatch(bd, NULL, c, m, &fs);
+		key_bindings_dispatch(bd, item, c, m, &fs);
 		key_bindings_unref_table(table);
-		return;
+		goto out;
 	}
 
 	/*
@@ -1181,14 +1192,18 @@ server_client_handle_key(struct client *c, key_code key)
 	if (first != table && (~flags & CLIENT_REPEAT)) {
 		server_client_set_key_table(c, NULL);
 		server_status_client(c);
-		return;
+		goto out;
 	}
 
 forward_key:
 	if (c->flags & CLIENT_READONLY)
-		return;
+		goto out;
 	if (wp != NULL)
 		window_pane_key(wp, c, s, wl, key, m);
+
+out:
+	free(event);
+	return (CMD_RETURN_NORMAL);
 }
 
 /* Client functions that need to happen every loop. */
diff --git a/tmux.h b/tmux.h
index 0e79d4295..4f69301f7 100644
--- a/tmux.h
+++ b/tmux.h
@@ -1052,6 +1052,12 @@ struct mouse_event {
 	u_int		sgr_b;
 };
 
+/* Key event. */
+struct key_event {
+	key_code		key;
+	struct mouse_event	m;
+};
+
 /* TTY information. */
 struct tty_key {
 	char		 ch;
@@ -1143,7 +1149,8 @@ struct tty {
 		TTY_UNKNOWN
 	} term_type;
 
-	struct mouse_event mouse;
+	u_int		 mouse_last_x;
+	u_int		 mouse_last_y;
 	int		 mouse_drag_flag;
 	void		(*mouse_drag_update)(struct client *,
 			    struct mouse_event *);
@@ -1864,7 +1871,7 @@ const char	*tty_acs_get(struct tty *, u_char);
 /* tty-keys.c */
 void		tty_keys_build(struct tty *);
 void		tty_keys_free(struct tty *);
-key_code	tty_keys_next(struct tty *);
+int		tty_keys_next(struct tty *);
 
 /* arguments.c */
 void		 args_set(struct args *, u_char, const char *);
@@ -2002,7 +2009,7 @@ void	 server_client_set_identify(struct client *, u_int);
 void	 server_client_set_key_table(struct client *, const char *);
 const char *server_client_get_key_table(struct client *);
 int	 server_client_check_nested(struct client *);
-void	 server_client_handle_key(struct client *, key_code);
+enum cmd_retval server_client_key_callback(struct cmdq_item *, void *);
 struct client *server_client_create(int);
 int	 server_client_open(struct client *, char **);
 void	 server_client_unref(struct client *);
diff --git a/tty-keys.c b/tty-keys.c
index 850c91197..1aecbcb24 100644
--- a/tty-keys.c
+++ b/tty-keys.c
@@ -46,7 +46,8 @@ static struct tty_key *tty_keys_find(struct tty *, const char *, size_t,
 static int	tty_keys_next1(struct tty *, const char *, size_t, key_code *,
 		    size_t *, int);
 static void	tty_keys_callback(int, short, void *);
-static int	tty_keys_mouse(struct tty *, const char *, size_t, size_t *);
+static int	tty_keys_mouse(struct tty *, const char *, size_t, size_t *,
+		    struct mouse_event *);
 static int	tty_keys_clipboard(struct tty *, const char *, size_t,
 		    size_t *);
 static int	tty_keys_device_attributes(struct tty *, const char *, size_t,
@@ -560,25 +561,26 @@ tty_keys_next1(struct tty *tty, const char *buf, size_t len, key_code *key,
 	return (-1);
 }
 
-/*
- * Process at least one key in the buffer and invoke tty->key_callback. Return
- * 0 if there are no further keys, or 1 if there could be more in the buffer.
- */
-key_code
+/* Process at least one key in the buffer. Return 0 if no keys present. */
+int
 tty_keys_next(struct tty *tty)
 {
-	struct client	*c = tty->client;
-	struct timeval	 tv;
-	const char	*buf;
-	size_t		 len, size;
-	cc_t		 bspace;
-	int		 delay, expired = 0, n;
-	key_code	 key;
+	struct client		*c = tty->client;
+	struct timeval		 tv;
+	const char		*buf;
+	size_t			 len, size;
+	cc_t			 bspace;
+	int			 delay, expired = 0, n;
+	key_code		 key;
+	struct cmdq_item	*item;
+	struct mouse_event	 m = { 0 };
+	struct key_event	*event;
+
+	gettimeofday(&tv, NULL);
 
 	/* Get key buffer. */
 	buf = EVBUFFER_DATA(tty->in);
 	len = EVBUFFER_LENGTH(tty->in);
-
 	if (len == 0)
 		return (0);
 	log_debug("%s: keys are %zu (%.*s)", c->name, len, (int)len, buf);
@@ -606,7 +608,7 @@ tty_keys_next(struct tty *tty)
 	}
 
 	/* Is this a mouse key press? */
-	switch (tty_keys_mouse(tty, buf, len, &size)) {
+	switch (tty_keys_mouse(tty, buf, len, &size, &m)) {
 	case 0:		/* yes */
 		key = KEYC_MOUSE;
 		goto complete_key;
@@ -725,8 +727,14 @@ tty_keys_next(struct tty *tty)
 	}
 
 	/* Fire the key. */
-	if (key != KEYC_UNKNOWN)
-		server_client_handle_key(tty->client, key);
+	if (key != KEYC_UNKNOWN) {
+		event = xmalloc(sizeof *event);
+		event->key = key;
+		memcpy(&event->m, &m, sizeof event->m);
+
+		item = cmdq_get_callback(server_client_key_callback, event);
+		cmdq_append(c, item);
+	}
 
 	return (1);
 
@@ -756,12 +764,12 @@ tty_keys_callback(__unused int fd, __unused short events, void *data)
  * (probably a mouse sequence but need more data).
  */
 static int
-tty_keys_mouse(struct tty *tty, const char *buf, size_t len, size_t *size)
+tty_keys_mouse(struct tty *tty, const char *buf, size_t len, size_t *size,
+    struct mouse_event *m)
 {
-	struct client		*c = tty->client;
-	struct mouse_event	*m = &tty->mouse;
-	u_int			 i, x, y, b, sgr_b;
-	u_char			 sgr_type, ch;
+	struct client	*c = tty->client;
+	u_int		 i, x, y, b, sgr_b;
+	u_char		 sgr_type, ch;
 
 	/*
 	 * Standard mouse sequences are \033[M followed by three characters
@@ -882,15 +890,19 @@ tty_keys_mouse(struct tty *tty, const char *buf, size_t len, size_t *size)
 		return (-1);
 
 	/* Fill mouse event. */
-	m->lx = m->x;
+	m->lx = tty->mouse_last_x;
 	m->x = x;
-	m->ly = m->y;
+	m->ly = tty->mouse_last_y;
 	m->y = y;
 	m->lb = m->b;
 	m->b = b;
 	m->sgr_type = sgr_type;
 	m->sgr_b = sgr_b;
 
+	/* Update last mouse state. */
+	tty->mouse_last_x = x;
+	tty->mouse_last_y = y;
+
 	return (0);
 }