[PATCH 0/2] enable progress traces even when quiet

This is a simple but large-scale change, because it changes an API and fixes all callers. The bulk of the change is in the first patch, including justification in the commit message; the second patch is only tidying I noticed while fixing compiler errors from the former. If that churn is unwanted I'm happy to drop it.

I wanted to do this change because we received reports that 'git clone' was only logging traces sometimes, not all the time. An alternative approach would have been to move the 'if (verbose)' wrappers to surround calls to 'display_progress()' - but this would have worked in builtin/index-pack.c (where the reported bug was happening) only because of that code's use of static global flags. Placing the onus on the caller to ensure that trace collection occurs, even in quiet mode, is flimsy and error-prone. Adding another flag to 'struct progress' ensures that trace collection is consistent regardless of how the caller organizes their code.

In a couple of cases, this does result in some additional work calculating titles and object counts where previously there wasn't; however, since those values will be used by the trace logger, I don't consider it a waste of resources.

Finally, 'git rev-list' has one weird case where it takes the progress title as an argument (i.e. 'git rev-list --progress "Working hard" ...') and also null-checks that string to decide whether to calle 'start_progress()' - in this case, I added a placeholder text for the traces to show. Bikeshedding welcome here.

 - Emily

Emily Shaffer (2):
  progress: create progress struct in 'verbose' mode
  progress: remove redundant null-checking

 builtin/blame.c             |   4 +-
 builtin/commit-graph.c      |   8 +-
 builtin/fsck.c              |  25 +++----
 builtin/index-pack.c        |  16 ++--
 builtin/log.c               |   4 +-
 builtin/pack-objects.c      |  18 ++---
 builtin/prune.c             |   4 +-
 builtin/rev-list.c          |   9 ++-
 builtin/unpack-objects.c    |   3 +-
 commit-graph.c              | 143 +++++++++++++++++-------------------
 delta-islands.c             |   4 +-
 diffcore-rename.c           |   9 +--
 entry.c                     |   2 +-
 midx.c                      |  43 +++++------
 pack-bitmap-write.c         |   8 +-
 pack-bitmap.c               |   5 +-
 preload-index.c             |   7 +-
 progress.c                  |  27 ++++---
 progress.h                  |  10 ++-
 prune-packed.c              |   4 +-
 read-cache.c                |  15 ++--
 t/helper/test-progress.c    |   6 +-
 t/t0500-progress-display.sh |  27 +++++++
 unpack-trees.c              |  14 ++--
 walker.c                    |   4 +-
 25 files changed, 217 insertions(+), 202 deletions(-)