Teach fmt-patch about --numbered

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>

builtin-log.c

@@ -137,6 +137,7 @@ int cmd_format_patch(int argc, const char **argv, char **envp)
 	struct rev_info rev;
 	int nr = 0, total, i, j;
 	int use_stdout = 0;
+	int numbered = 0;
 
 	init_revisions(&rev);
 	rev.commit_format = CMIT_FMT_EMAIL;
@@ -156,6 +157,9 @@ int cmd_format_patch(int argc, const char **argv, char **envp)
 	for (i = 1, j = 1; i < argc; i++) {
 		if (!strcmp(argv[i], "--stdout"))
 			use_stdout = 1;
+		else if (!strcmp(argv[i], "-n") ||
+				!strcmp(argv[i], "--numbered"))
+			numbered = 1;
 		else if (!strcmp(argv[i], "-o")) {
 			if (argc < 3)
 				die ("Which directory?");
@@ -186,11 +190,14 @@ int cmd_format_patch(int argc, const char **argv, char **envp)
 		list[nr - 1] = commit;
 	}
 	total = nr;
+	if (numbered)
+		rev.total = total;
 	while (0 <= --nr) {
 		int shown;
 		commit = list[nr];
+		rev.nr = total - nr;
 		if (!use_stdout)
-			reopen_stdout(commit, total - nr);
+			reopen_stdout(commit, rev.nr);
 		shown = log_tree_commit(&rev, commit);
 		free(commit->buffer);
 		commit->buffer = NULL;

commit.c

@@ -489,17 +489,14 @@ static int add_merge_info(enum cmit_fmt fmt, char *buf, const struct commit *com
 	return offset;
 }
 
-unsigned long pretty_print_commit(enum cmit_fmt fmt, const struct commit *commit, unsigned long len, char *buf, unsigned long space, int abbrev)
+unsigned long pretty_print_commit(enum cmit_fmt fmt, const struct commit *commit, unsigned long len, char *buf, unsigned long space, int abbrev, const char *subject)
 {
 	int hdr = 1, body = 0;
 	unsigned long offset = 0;
 	int indent = 4;
 	int parents_shown = 0;
 	const char *msg = commit->buffer;
-	const char *subject = NULL;
 
-	if (fmt == CMIT_FMT_EMAIL)
-		subject = "Subject: [PATCH] ";
 	if (fmt == CMIT_FMT_ONELINE || fmt == CMIT_FMT_EMAIL)
 		indent = 0;
 

commit.h

@@ -51,7 +51,7 @@ enum cmit_fmt {
 };
 
 extern enum cmit_fmt get_commit_format(const char *arg);
-extern unsigned long pretty_print_commit(enum cmit_fmt fmt, const struct commit *, unsigned long len, char *buf, unsigned long space, int abbrev);
+extern unsigned long pretty_print_commit(enum cmit_fmt fmt, const struct commit *, unsigned long len, char *buf, unsigned long space, int abbrev, const char *subject);
 
 /** Removes the first commit from a list sorted by date, and adds all
  * of its parents.

log-tree.c

@@ -11,6 +11,7 @@ void show_log(struct rev_info *opt, struct log_info *log, const char *sep)
 	int abbrev_commit = opt->abbrev_commit ? opt->abbrev : 40;
 	const char *extra;
 	int len;
+	char* subject = NULL;
 
 	opt->loginfo = NULL;
 	if (!opt->verbose_header) {
@@ -38,10 +39,18 @@ void show_log(struct rev_info *opt, struct log_info *log, const char *sep)
 	 * Print header line of header..
 	 */
 
-	if (opt->commit_format == CMIT_FMT_EMAIL)
+	if (opt->commit_format == CMIT_FMT_EMAIL) {
+		if (opt->total > 0) {
+			static char buffer[64];
+			snprintf(buffer, sizeof(buffer),
+					"Subject: [PATCH %d/%d] ",
+					opt->nr, opt->total);
+			subject = buffer;
+		} else
+			subject = "Subject: [PATCH] ";
 		printf("From %s  Thu Apr 7 15:13:13 2005\n",
 		       sha1_to_hex(commit->object.sha1));
-	else {
+	} else {
 		printf("%s%s",
 		       opt->commit_format == CMIT_FMT_ONELINE ? "" : "commit ",
 		       diff_unique_abbrev(commit->object.sha1, abbrev_commit));
@@ -55,7 +64,7 @@ void show_log(struct rev_info *opt, struct log_info *log, const char *sep)
 	/*
 	 * And then the pretty-printed message itself
 	 */
-	len = pretty_print_commit(opt->commit_format, commit, ~0u, this_header, sizeof(this_header), abbrev);
+	len = pretty_print_commit(opt->commit_format, commit, ~0u, this_header, sizeof(this_header), abbrev, subject);
 	printf("%s%s%s", this_header, extra, sep);
 }
 

rev-list.c

@@ -84,7 +84,7 @@ static void show_commit(struct commit *commit)
 		static char pretty_header[16384];
 		pretty_print_commit(revs.commit_format, commit, ~0,
 				    pretty_header, sizeof(pretty_header),
-				    revs.abbrev);
+				    revs.abbrev, NULL);
 		printf("%s%c", pretty_header, hdr_termination);
 	}
 	fflush(stdout);

revision.h

@@ -58,6 +58,7 @@ struct rev_info {
 	unsigned int	abbrev;
 	enum cmit_fmt	commit_format;
 	struct log_info *loginfo;
+	int		nr, total;
 
 	/* special limits */
 	int max_count;

show-branch.c

@@ -259,7 +259,7 @@ static void show_one_commit(struct commit *commit, int no_name)
 	struct commit_name *name = commit->object.util;
 	if (commit->object.parsed)
 		pretty_print_commit(CMIT_FMT_ONELINE, commit, ~0,
-				    pretty, sizeof(pretty), 0);
+				    pretty, sizeof(pretty), 0, NULL);
 	else
 		strcpy(pretty, "(unavailable)");
 	if (!strncmp(pretty, "[PATCH] ", 8))