If you press an incomplete key sequence, previously WeeChat would send
the key_pressed signal again for the same keys on the next key.
E.g. if you press escape and then 1, previously you would get the
key_pressed signal with signal_data `\x01[` when you pressed escape, and
then key_pressed with `\x01[` again when you pressed 1 (plus key_pressed
with `1` for the 1 key). So two signals for the escape key, even though
it was only pressed once.
With this patch, you only get one signal for each key press. So one with
`\x01[` when you press escape and then one with `1` when you press 1.
Version 4.0.0 (specifically commit 1f5c791c3) changed the key handling
so key_combo_* signals were sent for each character in a sequence,
rather than just when the sequence is finished. This broke parts of the
vimode.py script.
E.g. for the up arrow, 3.8 sends key_combo_default signal once with the
signal_data `\x01[[A`, while 4.0.0 sends it three times with the
signal_data `\x01[`, `\x01[[` and `\x01[[A`.
With this patch, the previous behavior is brought back. There is one
small change though. In 3.8 if you press escape one or two times it
doesn't send key_combo_default, but if you press it three or more times
it sends it for each escape press. With this patch, it's never sent for
plain escape presses, only when the sequence is finished with some other
key.
This is intentional, as getting key_combo_default for escape presses
doesn't make sense since it's not a finished combo, and the behavior of
3.8 where you got it after three or more key presses was most likely
unintentional as it just happened because it didn't match any key
bindings anymore (there are key bindings starting with one or two escape
characters, but not more).
This fixes a bug where if you had multiple lines in the input and
pressed ctrl-w when the cursor was after the first word of any line but
the first, it would delete both the word before the cursor and the last
word on the preceding line.
Commands 716/717 are returned if the target user has mode +g, they look like
this:
:server 716 my_nick bob :is in +g mode and must manually allow you to message them. Your message was discarded.
:server 717 my_nick bob :has been informed that you messaged them.
These variables are the same as "_chat_bol" and "_chat_eol" except that they
stop at the beginning of the focused line (not the whole message displayed, in
case message has multiple lines separated by "\n").
Sébastien Helleu