On Thu, Jun 30, 2022 at 11:33 PM Junio C Hamano [off-list ref] wrote:

Independent of what this "The output from 'cat-file commit' is
tweaked" feature, I wonder if we want a command that can be used as
a filter.  Just like "git name-rev --stdin" reads a stream of text,
finds commit-looking references in it, and annotates them, the
command (e.g. "git mailmap") would find ident-looking strings and
replaces with the mapped results, or something.

Yeah, that might be useful. Especially one issue is that trailers like
"Reviewed-by: ...", "Helped-by: ..." are interesting for statistics
and replacing their content with mapped results could help improve the
stats.

Related to this, I wonder if `git interpret-trailers` should have a
simple way to map trailer content.