[PATCH 00/28] Revamping the attr subsystem!

This is a series that
* replaces jc/attr-more. I did merge one fixup! commit at the appropriate place,
  as well as resolving a minor merge conflict when rebasing to the latest master
* revamps the API of the attr subsystem, such that it can be made thread safe
  in a later step easily, because the expected changes are only in attr.c
  
I think this is a start to the minimal set of changes such that we can rebase
sb/pathspec-label and sb/submodule-default-paths on top of these eventually.

Thanks, Stefan

Junio C Hamano (24):
  commit.c: use strchrnul() to scan for one line
  attr.c: use strchrnul() to scan for one line
  attr.c: update a stale comment on "struct match_attr"
  attr.c: explain the lack of attr-name syntax check in parse_attr()
  attr.c: complete a sentence in a comment
  attr.c: mark where #if DEBUG ends more clearly
  attr.c: simplify macroexpand_one()
  attr.c: tighten constness around "git_attr" structure
  attr.c: plug small leak in parse_attr_line()
  attr: rename function and struct related to checking attributes
  attr: (re)introduce git_check_attr() and struct git_attr_check
  attr: convert git_all_attrs() to use "struct git_attr_check"
  attr: convert git_check_attrs() callers to use the new API
  attr: retire git_check_attrs() API
  attr: add counted string version of git_check_attr()
  attr: add counted string version of git_attr()
  attr: expose validity check for attribute names
  attr.c: add push_stack() helper
  attr.c: pass struct git_attr_check down the callchain
  attr.c: rename a local variable check
  attr.c: correct ugly hack for git_all_attrs()
  attr.c: introduce empty_attr_check_elems()
  attr.c: always pass check[] to collect_some_attrs()
  attr.c: outline the future plans by heavily commenting

Nguyễn Thái Ngọc Duy (1):
  attr: support quoting pathname patterns in C style

Stefan Beller (3):
  attr: make git_attr_counted static
  attr: make git_check_attr_counted static
  attr: convert to new threadsafe API

 Documentation/gitattributes.txt               |   8 +-
 Documentation/technical/api-gitattributes.txt | 114 +++++--
 archive.c                                     |  27 +-
 attr.c                                        | 413 ++++++++++++++++++--------
 attr.h                                        |  69 +++--
 builtin/check-attr.c                          |  59 ++--
 builtin/pack-objects.c                        |  22 +-
 commit.c                                      |   3 +-
 convert.c                                     |  44 ++-
 ll-merge.c                                    |  38 +--
 t/t0003-attributes.sh                         |  26 ++
 userdiff.c                                    |  22 +-
 ws.c                                          |  22 +-
 13 files changed, 561 insertions(+), 306 deletions(-)