On Mon, Feb 12, 2018 at 08:08:54AM +0000, Olga Telezhnaya wrote:

Need that for further reusing of formatting logic in cat-file.
Have plans to get rid of using expand_data in cat-file at all,
and use it only in ref-filter for collecting, formatting and printing
needed data.

This seems like another step that we're going to end up reversing later,
because ref-filter has a different representation for these kinds of
expansions. I'll keep reading...

-Peff