NAME
Catmandu::Fix::isbn13 - normalize the isbn value of a key in 13-digit form
SYNOPSIS
# Normalize the ISBN value of isbn_field.
# e.g. isbn_field => '1565922573'
isbn13(isbn_field) # isbn_field => '978-1-56592-257-0'Catmandu::Fix::isbn13 - normalize the isbn value of a key in 13-digit form
# Normalize the ISBN value of isbn_field.
# e.g. isbn_field => '1565922573'
isbn13(isbn_field) # isbn_field => '978-1-56592-257-0'