From c6b51cea923e0c4e92636998a776ada42511b6e5 Mon Sep 17 00:00:00 2001 From: Nicholas Marriott Date: Wed, 27 Apr 2022 11:34:08 +0100 Subject: If a mouse position was above the maximum supported by the normal mouse protocol (223), tmux was allowing it to wrap around. However, since tmux was not correctly handling this on input, other programs also do not handle it correctly, and the alternative SGR mouse mode is now widespread, this seems unnecessary, so remove this feature. Also define some constants to make it clearer what the numbers mean. Mostly from Leonid S Usov in GitHub issue 3165. --- input-keys.c | 31 +++++++++++++++++++++++-------- 1 file changed, 23 insertions(+), 8 deletions(-) (limited to 'input-keys.c') diff --git a/input-keys.c b/input-keys.c index feb62f6d..ebf61333 100644 --- a/input-keys.c +++ b/input-keys.c @@ -606,19 +606,34 @@ input_key_get_mouse(struct screen *s, struct mouse_event *m, u_int x, u_int y, len = xsnprintf(buf, sizeof buf, "\033[<%u;%u;%u%c", m->sgr_b, x + 1, y + 1, m->sgr_type); } else if (s->mode & MODE_MOUSE_UTF8) { - if (m->b > 0x7ff - 32 || x > 0x7ff - 33 || y > 0x7ff - 33) + if (m->b > MOUSE_PARAM_UTF8_MAX - MOUSE_PARAM_BTN_OFF || + x > MOUSE_PARAM_UTF8_MAX - MOUSE_PARAM_POS_OFF || + y > MOUSE_PARAM_UTF8_MAX - MOUSE_PARAM_POS_OFF) return (0); len = xsnprintf(buf, sizeof buf, "\033[M"); - len += input_key_split2(m->b + 32, &buf[len]); - len += input_key_split2(x + 33, &buf[len]); - len += input_key_split2(y + 33, &buf[len]); + len += input_key_split2(m->b + MOUSE_PARAM_BTN_OFF, &buf[len]); + len += input_key_split2(x + MOUSE_PARAM_POS_OFF, &buf[len]); + len += input_key_split2(y + MOUSE_PARAM_POS_OFF, &buf[len]); } else { - if (m->b > 223) + if (m->b + MOUSE_PARAM_BTN_OFF > MOUSE_PARAM_MAX) return (0); + len = xsnprintf(buf, sizeof buf, "\033[M"); - buf[len++] = m->b + 32; - buf[len++] = x + 33; - buf[len++] = y + 33; + buf[len++] = m->b + MOUSE_PARAM_BTN_OFF; + + /* + * The incoming x and y may be out of the range which can be + * supported by the "normal" mouse protocol. Clamp the + * coordinates to the supported range. + */ + if (x + MOUSE_PARAM_POS_OFF > MOUSE_PARAM_MAX) + buf[len++] = MOUSE_PARAM_MAX; + else + buf[len++] = x + MOUSE_PARAM_POS_OFF; + if (y + MOUSE_PARAM_POS_OFF > MOUSE_PARAM_MAX) + buf[len++] = MOUSE_PARAM_MAX; + else + buf[len++] = y + MOUSE_PARAM_POS_OFF; } *rbuf = buf; -- cgit