Vocabulary
unicode.breaks

Inputs and outputs

end	an index
str	a string
i	an index

Word description
Finds the index of the start of the last grapheme of the string, starting from the given index. This can be used to traverse the graphemes of a string backwards.

Definition

USING: kernel sequences ;

IN: unicode.breaks

: last-grapheme-from ( end str -- i )
swap head-slice last-grapheme ;