[WIP PATCH 0/5] support --exclude for diff/log commands

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

This is not really ready for review or use, but I'd like to have
feedback if any, where this series is heading because it requires some
code refactor in diff/rev machinery. It does not feel absolutely right
to me.

On the other hand, if we go with ':' as a mark of special pathspecs, then

 - ":/" mark pathspecs relative to worktree root
 - ":!" may mark negative pathspecs

Less changes in diff/rev this way.

Nguyễn Thái Ngọc Duy (5):
  tree-walk: support negative pathspec
  match_pathspec_depth: support negative pathspec

match_pathspec_depth needs work. tree_entry_interesting() can use some
optimization, but leave it for now.

  revision.c: get rid of struct rev_info.prune_data
  diff: refactor init/release API

These two facilitate post pathspec manipulation to transform --exclude
to pathspecs with to_exclude = 1.

  diff: support --exclude

 Documentation/technical/api-diff.txt |    2 +-
 builtin/add.c                        |    3 +-
 builtin/blame.c                      |   22 +++++----------
 builtin/diff.c                       |    6 ++--
 builtin/fast-export.c                |    2 +-
 builtin/merge.c                      |    2 +-
 builtin/reset.c                      |    4 +-
 cache.h                              |    1 +
 diff-lib.c                           |    6 ++--
 diff-no-index.c                      |    6 ++--
 diff.c                               |   49 ++++++++++++++++++++++++++++++++-
 diff.h                               |    6 ++--
 dir.c                                |    5 +++
 merge-recursive.c                    |    2 +-
 notes-merge.c                        |    8 +++---
 patch-ids.c                          |    2 +-
 revision.c                           |   22 ++++++++-------
 revision.h                           |    1 -
 tree-diff.c                          |   21 +++------------
 tree-walk.c                          |   37 +++++++++++++++++++------
 wt-status.c                          |    6 +---
 21 files changed, 130 insertions(+), 83 deletions(-)

-- 
1.7.3.1.256.g2539c.dirty