Diff: --name-status output format.

The new output format shows only the status letter and paths.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Documentation/diff-options.txt

@@ -15,8 +15,8 @@
 --name-only::
 	Show only names of changed files.
 
---name-only-z::
-	Same as --name-only, but terminate lines with NUL.
+--name-status::
+	Show only names and status of changed files.
 
 -B::
 	Break complete rewrite changes into pairs of delete and create.

diff.c

@@ -709,6 +709,8 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
 		options->rename_limit = strtoul(arg+2, NULL, 10);
 	else if (!strcmp(arg, "--name-only"))
 		options->output_format = DIFF_FORMAT_NAME;
+	else if (!strcmp(arg, "--name-status"))
+		options->output_format = DIFF_FORMAT_NAME_STATUS;
 	else if (!strcmp(arg, "-R"))
 		options->reverse_diff = 1;
 	else if (!strncmp(arg, "-S", 2))
@@ -835,7 +837,8 @@ void diff_free_filepair(struct diff_filepair *p)
 
 static void diff_flush_raw(struct diff_filepair *p,
 			   int line_termination,
-			   int inter_name_termination)
+			   int inter_name_termination,
+			   int output_format)
 {
 	int two_paths;
 	char status[10];
@@ -871,13 +874,12 @@ static void diff_flush_raw(struct diff_filepair *p,
 		two_paths = 0;
 		break;
 	}
+	if (output_format != DIFF_FORMAT_NAME_STATUS) {
 		printf(":%06o %06o %s ",
 		       p->one->mode, p->two->mode, sha1_to_hex(p->one->sha1));
-	printf("%s %s%c%s",
-	       sha1_to_hex(p->two->sha1),
-	       status,
-	       inter_name_termination,
-	       p->one->path);
+		printf("%s ", sha1_to_hex(p->two->sha1));
+	}
+	printf("%s%c%s",status, inter_name_termination, p->one->path);
 	if (two_paths)
 		printf("%c%s", inter_name_termination, p->two->path);
 	putchar(line_termination);
@@ -1067,8 +1069,10 @@ void diff_flush(struct diff_options *options)
 			diff_flush_patch(p);
 			break;
 		case DIFF_FORMAT_RAW:
+		case DIFF_FORMAT_NAME_STATUS:
 			diff_flush_raw(p, line_termination,
-				       inter_name_termination);
+				       inter_name_termination,
+				       diff_output_format);
 			break;
 		case DIFF_FORMAT_NAME:
 			diff_flush_name(p, line_termination);

diff.h

@@ -67,6 +67,7 @@ extern void diffcore_std_no_resolve(struct diff_options *);
 "  -p            output patch format.\n" \
 "  -u            synonym for -p.\n" \
 "  --name-only   show only names of changed files.\n" \
+"  --name-status show names and status of changed files.\n" \
 "  -R            swap input file pairs.\n" \
 "  -B            detect complete rewrites.\n" \
 "  -M            detect renames.\n" \
@@ -85,6 +86,7 @@ extern int diff_queue_is_empty(void);
 #define DIFF_FORMAT_PATCH	2
 #define DIFF_FORMAT_NO_OUTPUT	3
 #define DIFF_FORMAT_NAME	4
+#define DIFF_FORMAT_NAME_STATUS	5
 
 extern void diff_flush(struct diff_options*);