The id is a "long long" variable with the current time (microseconds
precision).
It is guaranteed to be unique for all buffers, and the same number is never
used again, during the lifetime of the process.
It persists and is unchanged after `/upgrade`.
This makes possible to disable a key hiding another (because shorter than the
other, and beginning with the same key).
For example if key "meta-a" is set to an empty command, it would not hide any
more the key "meta-a,1" which has a non-empty command.
The options `weechat.custom_bar_item.xxx.*` are now properly renamed to the new
item name.
This fixes a save issue (item saved with old name in config) and a crash if a
new item is created with the old name.
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).
Sébastien Helleu