ør
Characters: ø, r
ø
r
Strip from the right side of a string
str-num
a.rstrip(b)
`dddabcddd` `d` ør
`dddabc`
⟨3|3|1|2|3|3|3⟩ ⟨3⟩ ør
⟨3|3|1|2⟩