grep: further simplify setting the pattern type

When c5c31d33 (grep: move pattern-type bits support to top-level
grep.[ch], 2012-10-03) introduced grep_commit_pattern_type() helper
function, the intention was to allow the users of grep API to having
to fiddle only with .pattern_type_option (which can be set to "fixed",
"basic", "extended", and "pcre"), and then immediately before compiling
the pattern strings for use, call grep_commit_pattern_type() to have
it prepare various bits in the grep_opt structure (like .fixed,
.regflags, etc.).

However, grep_set_pattern_type_option() helper function the grep API
internally uses were left as an external function by mistake.  This
function shouldn't have been made callable by the users of the API.

Later when the grep API was used in revision traversal machinery,
the caller then mistakenly started calling the function around
34a4ae55 (log --grep: use the same helper to set -E/-F options as
"git grep", 2012-10-03), instead of setting the .pattern_type_option
field and letting the grep_commit_pattern_type() to take care of the
details.

This caused an unnecessary bug that made a configured
grep.patternType take precedence over the command line options
(e.g. --basic-regexp, --fixed-strings) in "git log" family of
commands.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/revision.c b/revision.c
index 871812d..c46dca4 100644
--- a/revision.c
+++ b/revision.c
@@ -1964,16 +1964,16 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
 	} else if (!strcmp(arg, "--grep-debug")) {
 		revs->grep_filter.debug = 1;
 	} else if (!strcmp(arg, "--basic-regexp")) {
-		grep_set_pattern_type_option(GREP_PATTERN_TYPE_BRE, &revs->grep_filter);
+		revs->grep_filter.pattern_type_option = GREP_PATTERN_TYPE_BRE;
 	} else if (!strcmp(arg, "--extended-regexp") || !strcmp(arg, "-E")) {
-		grep_set_pattern_type_option(GREP_PATTERN_TYPE_ERE, &revs->grep_filter);
+		revs->grep_filter.pattern_type_option = GREP_PATTERN_TYPE_ERE;
 	} else if (!strcmp(arg, "--regexp-ignore-case") || !strcmp(arg, "-i")) {
 		revs->grep_filter.regflags |= REG_ICASE;
 		DIFF_OPT_SET(&revs->diffopt, PICKAXE_IGNORE_CASE);
 	} else if (!strcmp(arg, "--fixed-strings") || !strcmp(arg, "-F")) {
-		grep_set_pattern_type_option(GREP_PATTERN_TYPE_FIXED, &revs->grep_filter);
+		revs->grep_filter.pattern_type_option = GREP_PATTERN_TYPE_FIXED;
 	} else if (!strcmp(arg, "--perl-regexp")) {
-		grep_set_pattern_type_option(GREP_PATTERN_TYPE_PCRE, &revs->grep_filter);
+		revs->grep_filter.pattern_type_option = GREP_PATTERN_TYPE_PCRE;
 	} else if (!strcmp(arg, "--all-match")) {
 		revs->grep_filter.all_match = 1;
 	} else if (!strcmp(arg, "--invert-grep")) {