last-grapheme-from ( end str -- i )
Word and grapheme breaks

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Vocabulary
unicode

Inputs

end	an index
str	a string

Outputs

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

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