===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/input-keys.c,v
retrieving revision 1.58
retrieving revision 1.59
diff -u -r1.58 -r1.59
--- src/usr.bin/tmux/input-keys.c	2017/01/25 14:36:08	1.58
+++ src/usr.bin/tmux/input-keys.c	2017/02/01 09:55:07	1.59
@@ -1,4 +1,4 @@
-/* $OpenBSD: input-keys.c,v 1.58 2017/01/25 14:36:08 nicm Exp $ */
+/* $OpenBSD: input-keys.c,v 1.59 2017/02/01 09:55:07 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -235,22 +235,44 @@
 static void
 input_key_mouse(struct window_pane *wp, struct mouse_event *m)
 {
-	char	buf[40];
-	size_t	len;
-	u_int	x, y;
+	struct screen	*s = wp->screen;
+	int		 mode = s->mode;
+	char		 buf[40];
+	size_t		 len;
+	u_int		 x, y;
 
-	if ((wp->screen->mode & ALL_MOUSE_MODES) == 0)
+	if ((mode & ALL_MOUSE_MODES) == 0)
 		return;
 	if (!window_pane_visible(wp))
 		return;
 	if (cmd_mouse_at(wp, m, &x, &y, 0) != 0)
 		return;
 
-	/* If this pane is not in button mode, discard motion events. */
-	if (!(wp->screen->mode & MODE_MOUSE_BUTTON) && (m->b & MOUSE_MASK_DRAG))
-		return;
+	/* If this pane is not in button or all mode, discard motion events. */
+	if (MOUSE_DRAG(m->b) &&
+	    (mode & (MODE_MOUSE_BUTTON|MODE_MOUSE_ALL)) == 0)
+	    return;
 
 	/*
+	 * If this event is a release event and not in all mode, discard it.
+	 * In SGR mode we can tell absolutely because a release is normally
+	 * shown by the last character. Without SGR, we check if the last
+	 * buttons was also a release.
+	 */
+	if (m->sgr_type != ' ') {
+		if (MOUSE_DRAG(m->sgr_b) &&
+		    MOUSE_BUTTONS(m->sgr_b) == 3 &&
+		    (~mode & MODE_MOUSE_ALL))
+			return;
+	} else {
+		if (MOUSE_DRAG(m->b) &&
+		    MOUSE_BUTTONS(m->b) == 3 &&
+		    MOUSE_BUTTONS(m->lb) == 3 &&
+		    (~mode & MODE_MOUSE_ALL))
+			return;
+	}
+
+	/*
 	 * Use the SGR (1006) extension only if the application requested it
 	 * and the underlying terminal also sent the event in this format (this
 	 * is because an old style mouse release event cannot be converted into
@@ -259,10 +281,10 @@
 	 * UTF-8 (1005) extension if the application requested, or to the
 	 * legacy format.
 	 */
-	if (m->sgr_type != ' ' && (wp->screen->mode & MODE_MOUSE_SGR)) {
+	if (m->sgr_type != ' ' && (s->mode & MODE_MOUSE_SGR)) {
 		len = xsnprintf(buf, sizeof buf, "\033[<%u;%u;%u%c",
 		    m->sgr_b, x + 1, y + 1, m->sgr_type);
-	} else if (wp->screen->mode & MODE_MOUSE_UTF8) {
+	} else if (s->mode & MODE_MOUSE_UTF8) {
 		if (m->b > 0x7ff - 32 || x > 0x7ff - 33 || y > 0x7ff - 33)
 			return;
 		len = xsnprintf(buf, sizeof buf, "\033[M");