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ref-filter functions are useful for printing git object information using a format specifier. However, some other modules may not want to use this functionality on a ref-array but only print a single item. Expose a pretty_print_ref function to create, pretty print and free individual ref-items. Signed-off-by: Lukas Puehringer <luk.puehringer@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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