[PATCH v2 0/5] Support matching "**" in .gitattributes and .gitignore

Changes in v2:

 - Correct commit sha-1 in the 1/5 to the last GPL-2 rsync commit.
   State it is pristine import. Move wildmatch.[ch] to top dir.
 - Add tests to 5/5 (I forgot to test that the integration should run
   well, in addition to wildmatch() working in general)

Note that there might be a regression because wildmatch() does not care about LC_CTYPE when dealing with character classes, while libc's fnmatch might. But it's probably not worth bothering about because we match against path names, which do not necessarily follow LC_TYPE but the file system's encoding.

Nguyễn Thái Ngọc Duy (5):
  Import wildmatch from rsync
  compat/wildmatch: remove static variable force_lower_case
  compat/wildmatch: fix case-insensitive matching
  Integrate wildmatch to git
  Support "**" in .gitignore and .gitattributes patterns using
    wildmatch()

 .gitignore                         |   1 +
 Documentation/gitignore.txt        |   3 +
 Makefile                           |   6 +
 attr.c                             |   4 +-
 dir.c                              |   5 +-
 t/t0003-attributes.sh              |  17 ++
 t/t3001-ls-files-others-exclude.sh |  11 ++
 t/t3070-wildmatch.sh               |  27 +++
 t/t3070-wildmatch/wildtest.txt     | 165 ++++++++++++++++
 test-wildmatch.c                   | 228 +++++++++++++++++++++++
 wildmatch.c                        | 373 +++++++++++++++++++++++++++++++++++++
 wildmatch.h                        |   6 +
 12 files changed, 844 insertions(+), 2 deletions(-)
 create mode 100755 t/t3070-wildmatch.sh
 create mode 100644 t/t3070-wildmatch/wildtest.txt
 create mode 100644 test-wildmatch.c
 create mode 100644 wildmatch.c
 create mode 100644 wildmatch.h