[PATCH 3/8] grep: --count over binary

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The intent of showing the message "Binary file xyz matches" for
binary files is to avoid annoying users by potentially messing up
their terminals by printing control characters.  In --count mode,
this precaution isn't necessary.

Display counts of matches if -c/--count was specified, even if -a
was not given.  GNU grep does the same.

Moving the check for ->count before the code for handling binary
file also avoids printing context lines if --count and -[ABC] were
used together, so we can remove the part of the comment that
mentions this behaviour.  Again, GNU grep does the same.

Signed-off-by: Rene Scharfe <rene.scharfe@xxxxxxxxxxxxxx>
---
 grep.c                 |    9 ++++-----
 t/t7008-grep-binary.sh |    6 ++++++
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/grep.c b/grep.c
index 2a8e879..35c18b7 100644
--- a/grep.c
+++ b/grep.c
@@ -873,6 +873,8 @@ static int grep_buffer_1(struct grep_opt *opt, const char *name,
 			count++;
 			if (opt->status_only)
 				return 1;
+			if (opt->count)
+				goto next_line;
 			if (binary_match_only) {
 				opt->output(opt, "Binary file ", 12);
 				output_color(opt, name, strlen(name),
@@ -886,16 +888,12 @@ static int grep_buffer_1(struct grep_opt *opt, const char *name,
 			}
 			/* Hit at this line.  If we haven't shown the
 			 * pre-context lines, we would need to show them.
-			 * When asked to do "count", this still show
-			 * the context which is nonsense, but the user
-			 * deserves to get that ;-).
 			 */
 			if (opt->pre_context)
 				show_pre_context(opt, name, buf, bol, lno);
 			else if (opt->funcname)
 				show_funcname_line(opt, name, buf, bol, lno);
-			if (!opt->count)
-				show_line(opt, bol, eol, name, lno, ':');
+			show_line(opt, bol, eol, name, lno, ':');
 			last_hit = lno;
 		}
 		else if (last_hit &&
@@ -939,6 +937,7 @@ static int grep_buffer_1(struct grep_opt *opt, const char *name,
 		output_sep(opt, ':');
 		snprintf(buf, sizeof(buf), "%u\n", count);
 		opt->output(opt, buf, strlen(buf));
+		return 1;
 	}
 	return !!last_hit;
 }
diff --git a/t/t7008-grep-binary.sh b/t/t7008-grep-binary.sh
index 2320e74..91970ea 100755
--- a/t/t7008-grep-binary.sh
+++ b/t/t7008-grep-binary.sh
@@ -27,6 +27,12 @@ test_expect_success 'git grep -I ina a' '
 	test_cmp expect actual
 '
 
+test_expect_success 'git grep -c ina a' '
+	echo a:1 >expect &&
+	git grep -c ina a >actual &&
+	test_cmp expect actual
+'
+
 test_expect_success 'git grep -L bar a' '
 	echo a >expect &&
 	git grep -L bar a >actual &&
-- 
1.7.1

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