Re: [PATCH v3 8/9] format-support: move `format_sanitized_subject()` from pretty

"Hariom Verma via GitGitGadget" [off-list ref] writes:

From: Hariom Verma <redacted>

In hope of some new features in `subject` atom, move funtion
`format_sanitized_subject()` and all the function it uses
to new file format-support.{c,h}.

Consider this new file as a common interface between functions that
pretty.c and ref-filter.c shares.

Sorry, I do not see a point.  Let's not do this and keep or add them
in pretty.[ch] if you are making some of the static ones public.

Thanks.