[PATCH 6/6] log --grep: honor grep.patterntype etc. configuration variables

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

Read grep.extendedregexp, grep.patterntype, etc. from the
configuration so that "log --grep='<pcre>'" honors the user
preference without an explicit -P from the command line.

Now that the callback parameter, which was so far unused, to
git_log_config() has to be of type "struct rev_info *", stop passing
it down to git_diff_ui_config().  The latter does not currently take
any callback parameter, and when it does, we would need to make a
structure that has rev info and that parameter and pass it to
git_log_config() anyway, and until that happens, passing NULL will
be less error prone.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 builtin/log.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/builtin/log.c b/builtin/log.c
index 07a0078..a38a6dd 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -329,6 +329,8 @@ static int cmd_log_walk(struct rev_info *rev)
 
 static int git_log_config(const char *var, const char *value, void *cb)
 {
+	struct rev_info *revs = cb;
+
 	if (!strcmp(var, "format.pretty"))
 		return git_config_string(&fmt_pretty, var, value);
 	if (!strcmp(var, "format.subjectprefix"))
@@ -352,7 +354,8 @@ static int git_log_config(const char *var, const char *value, void *cb)
 	if (!prefixcmp(var, "color.decorate."))
 		return parse_decorate_color_config(var, 15, value);
 
-	return git_diff_ui_config(var, value, cb);
+	grep_config(var, value, &revs->grep_filter);
+	return git_diff_ui_config(var, value, NULL);
 }
 
 int cmd_whatchanged(int argc, const char **argv, const char *prefix)
-- 
1.8.0.rc0.57.g712528f