- K_KORIGIN instead of K_KCENTER: This name is similar to what is used
by xev. Alternative could be K_KBEGIN as hinted here:
https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h2-PC-Style-Function-Keys
But I find Begin and Home too similar, and it might induced some
confusion. The naming looked related to some old keyboard
configuration.
- keymap.c: alias KPPeriod to kDel instead of kPoint.
This might seems weird, but this is actually the behaviour that should
be expected. libtermkey produces "KPPeriod" when num lock is off. To
fix this would need to change this name in termkey.
closes#9780closes#9793
Note: there are three changes to ascii_isident. Reverting first two (in
find_special_key and first in get_special_key_code) normally fails the new test
with empty &isident, but reverting the third does not. Hence adding `>` to
&isident.
Ref vim/vim#2389.
