Re: [PATCH 0/13] more unused parameter cleanups

> Here's another round of -Wunused-parameter cleanups. Previous rounds
> were at [1] and [2]. As before, these are mostly just removals, so it's
> easy to see there's no behavior change (there are a couple of cleanups
> that ride along, though, so watch for those).
>
> There are two minor conflicts when merging with pu:
>
>   - jt/fetch-cdn-offload tweaked the "pack_lockfile" parameter to
>     fetch_pack(). A few other parameters are dropped in this series.
>     The textual resolution is pretty straightforward.
>
>   - ps/stash-in-c (et al) added a new call to report_path_error() in
>     builtin/stash.c, which here loses its redundant "prefix" parameter.
>     There's no textual conflict, but the new call needs to drop its
>     final NULL parameter in order to compile.
>
> [1] https://public-inbox.org/git/20190214054736.GA20091@sigill.intra.peff.net/
> [2] https://public-inbox.org/git/20190124131104.GA24017@sigill.intra.peff.net/
>
> The patches are:
>
>   [01/13]: revision: drop some unused "revs" parameters
>   [02/13]: log: drop unused rev_info from early output
>   [03/13]: log: drop unused "len" from show_tagger()
>   [04/13]: update-index: drop unused prefix_length parameter from do_reupdate()
>   [05/13]: test-date: drop unused "now" parameter from parse_dates()
>   [06/13]: unpack-trees: drop name_entry from traverse_by_cache_tree()
>   [07/13]: unpack-trees: drop unused error_type parameters
>   [08/13]: report_path_error(): drop unused prefix parameter
>   [09/13]: fetch_pack(): drop unused parameters
>   [10/13]: parse-options: drop unused ctx parameter from show_gitcomp()
>   [11/13]: pretty: drop unused "type" parameter in needs_rfc2047_encoding()
>   [12/13]: pretty: drop unused strbuf from parse_padding_placeholder()
>   [13/13]: parse_opt_ref_sorting: always use with NONEG flag

>  builtin/branch.c            |  3 +--
>  builtin/checkout.c          |  2 +-
>  builtin/commit.c            |  6 +++---
>  builtin/fetch-pack.c        |  2 +-
>  builtin/for-each-ref.c      |  3 +--
>  builtin/log.c               | 18 +++++++++---------
>  builtin/ls-files.c          |  2 +-
>  builtin/ls-remote.c         |  3 +--
>  builtin/submodule--helper.c |  2 +-
>  builtin/tag.c               |  3 +--
>  builtin/update-index.c      |  5 ++---
>  dir.c                       |  3 +--
>  dir.h                       |  2 +-
>  fetch-pack.c                |  3 +--
>  fetch-pack.h                |  3 +--
>  parse-options.c             |  5 ++---
>  pretty.c                    | 12 +++++-------
>  ref-filter.c                |  9 +++++++--
>  ref-filter.h                |  5 +++++
>  revision.c                  | 12 ++++++------
>  t/helper/test-date.c        |  4 ++--
>  transport.c                 | 10 ++++------
>  unpack-trees.c              |  9 +++------
>  23 files changed, 60 insertions(+), 66 deletions(-)
>
> -Peff