a y

newline
newline

    --------x
    --------x
xxxx--------x
xxxx--------x

NoNoberryach
--ago

----Z
WhavcreQhevnaZ
LemonNewNewZ

zzz
ok
ok

characterwise visual mode: replace last line
x
---
v:errmsg=

characterwise visual mode: delete middle line
b
c
---

characterwise visual mode: delete middle two line
c
---

characterwise visual mode: delete last line
a
b

---

characterwise visual mode: delete last two line
a

---

characterwise select mode: delete middle line
b
c
---

characterwise select mode: delete middle two line
c
---

characterwise select mode: delete last line
a
b

---

characterwise select mode: delete last two line
a

---

linewise select mode: delete middle line
b
c
---

linewise select mode: delete middle two line
c
---

linewise select mode: delete last line
a
b
---

linewise select mode: delete last two line
a
---

v_p: replace last character with line register at middle line
aaa
bb
aaa

ccc
---

v_p: replace last character with line register at middle line selecting newline
aaa
bb
aaa
ccc
---

v_p: replace last character with line register at last line
aaa
bbb
cc
aaa

---

v_p: replace last character with line register at last line selecting newline
aaa
bbb
cc
aaa

---

gv in exclusive select mode after operation
zzz 
xxx 
---

gv in exclusive select mode without operation
xxx 
---