[PATCH 0/5] A bit more "attributes"

[Junio C Hamano <gitster@pobox.com>]

The whole jc/attr topic is now depended on Stefan's "pathspec label"
topic, both of which are in 'next' and cannot be rewound until the
next cycle.  These five patches are to continue my recent
"attributes" work while the tree is in frozen state.

A few central data structures, namely "attr_stack" that keeps track
of the attributes read from the .gitattributes files in the
directory hierarchy of interest and "check_all_attr[]" that keeps
track of the state of the attributes for the path being checked, are
implemented as file-scope global singletons that belong to the
attribute subsystem ("attr.c").  The envisioned endgame is to make
them into per "struct git_attr_check" instance, so that the entire
system can have multiple "directory hierarchy of interest" and "path
being checked", i.e. allow multiple threads to keep their own
"git_attr_check" and to use the attribute system simultaneously.

To further that plan, the first two patches pass the check[]
structure further down the callchain, and the last two patches
remove a hack that prevented check[] from being passed in one corner
case and always pass it down the callchain.

Junio C Hamano (5):
  attr.c: add push_stack() helper
  attr.c: pass struct git_attr_check down the callchain
  fixup! d5ad6c13
  attr.c: correct ugly hack for git_all_attrs()
  attr.c: always pass check[] to collect_some_attrs()

 attr.c | 143 +++++++++++++++++++++++++++++++++--------------------------------
 attr.h |   2 +-
 2 files changed, 74 insertions(+), 71 deletions(-)

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2.9.0-rc2-262-g9161bbf