[PATCH v2 0/7] Tying loose ends on grep-pcre

It took longer than expected, but here is a reroll of the previous series to bring more recent "git grep" enhancements to the "--grep" option of commands in "git log" family.

The early part of the series (1-3) refactors the code that reads configuration items related to "grep" and the code that mixes the result with the command line options to prepare grep_opt, which so far lived in builtin/grep.c, and moves them to the grep.[ch] at the top-level.

The middle part (4-6) reuses the code to set-up grep_opt refactored by the earlier part of the series on revs->grep_filter that is used in "git log --grep=..." processing. It incidentally fixes a small bug where "git log -F -E --grep='<ere>'" did not look for matches to the pattern in extended regular expression, and adds --basic-regexp and --perl-regexp command line options to "git log" family for completeness.

The last one teaches "git log" family to honor the "grep.*" configuration variables, e.g. "grep.patterntype", so that you can say "git -c grep.patterntype=perl log --grep='(?:pcre)'".

Obviously, it is too late for this cycle and will not graduate to 'master' before the 1.8.0 final.

Junio C Hamano (7):
  builtin/grep.c: make configuration callback more reusable
  grep: move the configuration parsing logic to grep.[ch]
  grep: move pattern-type bits support to top-level grep.[ch]
  revisions: initialize revs->grep_filter using grep_init()
  log --grep: use the same helper to set -E/-F options as "git grep"
  log --grep: accept --basic-regexp and --perl-regexp
  log: honor grep.* configuration

 Documentation/rev-list-options.txt |  10 +++
 builtin/grep.c                     | 133 ++--------------------------
 builtin/log.c                      |   8 +-
 grep.c                             | 177 +++++++++++++++++++++++++++++++++++++
 grep.h                             |   6 ++
 revision.c                         |  14 ++-
 t/t4202-log.sh                     |   6 ++
 7 files changed, 225 insertions(+), 129 deletions(-)