[thirdparty/git.git] / log-tree.c

#include "cache.h"
#include "diff.h"
#include "commit.h"
#include "log-tree.h"
#include "reflog-walk.h"

static void show_parents(struct commit *commit, int abbrev)
{
	struct commit_list *p;
	for (p = commit->parents; p ; p = p->next) {
		struct commit *parent = p->item;
		printf(" %s", diff_unique_abbrev(parent->object.sha1, abbrev));
	}
}

/*
 * Search for "^[-A-Za-z]+: [^@]+@" pattern. It usually matches
 * Signed-off-by: and Acked-by: lines.
 */
static int detect_any_signoff(char *letter, int size)
{
	char ch, *cp;
	int seen_colon = 0;
	int seen_at = 0;
	int seen_name = 0;
	int seen_head = 0;

	cp = letter + size;
	while (letter <= --cp && (ch = *cp) == '\n')
		continue;

	while (letter <= cp) {
		ch = *cp--;
		if (ch == '\n')
			break;

		if (!seen_at) {
			if (ch == '@')
				seen_at = 1;
			continue;
		}
		if (!seen_colon) {
			if (ch == '@')
				return 0;
			else if (ch == ':')
				seen_colon = 1;
			else
				seen_name = 1;
			continue;
		}
		if (('A' <= ch && ch <= 'Z') ||
		    ('a' <= ch && ch <= 'z') ||
		    ch == '-') {
			seen_head = 1;
			continue;
		}
		/* no empty last line doesn't match */
		return 0;
	}
	return seen_head && seen_name;
}

static int append_signoff(char *buf, int buf_sz, int at, const char *signoff)
{
	static const char signed_off_by[] = "Signed-off-by: ";
	int signoff_len = strlen(signoff);
	int has_signoff = 0;
	char *cp = buf;

	/* Do we have enough space to add it? */
	if (buf_sz - at <= strlen(signed_off_by) + signoff_len + 3)
		return at;

	/* First see if we already have the sign-off by the signer */
	while ((cp = strstr(cp, signed_off_by))) {

		has_signoff = 1;

		cp += strlen(signed_off_by);
		if (cp + signoff_len >= buf + at)
			break;
		if (strncmp(cp, signoff, signoff_len))
			continue;
		if (!isspace(cp[signoff_len]))
			continue;
		/* we already have him */
		return at;
	}

	if (!has_signoff)
		has_signoff = detect_any_signoff(buf, at);

	if (!has_signoff)
		buf[at++] = '\n';

	strcpy(buf + at, signed_off_by);
	at += strlen(signed_off_by);
	strcpy(buf + at, signoff);
	at += signoff_len;
	buf[at++] = '\n';
	buf[at] = 0;
	return at;
}

void show_log(struct rev_info *opt, const char *sep)
{
	static char this_header[16384];
	struct log_info *log = opt->loginfo;
	struct commit *commit = log->commit, *parent = log->parent;
	int abbrev = opt->diffopt.abbrev;
	int abbrev_commit = opt->abbrev_commit ? opt->abbrev : 40;
	const char *extra;
	int len;
	const char *subject = NULL, *extra_headers = opt->extra_headers;

	opt->loginfo = NULL;
	if (!opt->verbose_header) {
		if (opt->left_right) {
			if (commit->object.flags & BOUNDARY)
				putchar('-');
			else if (commit->object.flags & SYMMETRIC_LEFT)
				putchar('<');
			else
				putchar('>');
		}
		fputs(diff_unique_abbrev(commit->object.sha1, abbrev_commit), stdout);
		if (opt->parents)
			show_parents(commit, abbrev_commit);
		putchar(opt->diffopt.line_termination);
		return;
	}

	/*
	 * The "oneline" format has several special cases:
	 *  - The pretty-printed commit lacks a newline at the end
	 *    of the buffer, but we do want to make sure that we
	 *    have a newline there. If the separator isn't already
	 *    a newline, add an extra one.
	 *  - unlike other log messages, the one-line format does
	 *    not have an empty line between entries.
	 */
	extra = "";
	if (*sep != '\n' && opt->commit_format == CMIT_FMT_ONELINE)
		extra = "\n";
	if (opt->shown_one && opt->commit_format != CMIT_FMT_ONELINE)
		putchar('\n');
	opt->shown_one = 1;

	/*
	 * Print header line of header..
	 */

	if (opt->commit_format == CMIT_FMT_EMAIL) {
		char *sha1 = sha1_to_hex(commit->object.sha1);
		if (opt->total > 0) {
			static char buffer[64];
			snprintf(buffer, sizeof(buffer),
					"Subject: [PATCH %d/%d] ",
					opt->nr, opt->total);
			subject = buffer;
		} else if (opt->total == 0)
			subject = "Subject: [PATCH] ";
		else
			subject = "Subject: ";

		printf("From %s Mon Sep 17 00:00:00 2001\n", sha1);
		if (opt->message_id)
			printf("Message-Id: <%s>\n", opt->message_id);
		if (opt->ref_message_id)
			printf("In-Reply-To: <%s>\nReferences: <%s>\n",
			       opt->ref_message_id, opt->ref_message_id);
		if (opt->mime_boundary) {
			static char subject_buffer[1024];
			static char buffer[1024];
			snprintf(subject_buffer, sizeof(subject_buffer) - 1,
				 "%s"
				 "MIME-Version: 1.0\n"
				 "Content-Type: multipart/mixed;\n"
				 " boundary=\"%s%s\"\n"
				 "\n"
				 "This is a multi-part message in MIME "
				 "format.\n"
				 "--%s%s\n"
				 "Content-Type: text/plain; "
				 "charset=UTF-8; format=fixed\n"
				 "Content-Transfer-Encoding: 8bit\n\n",
				 extra_headers ? extra_headers : "",
				 mime_boundary_leader, opt->mime_boundary,
				 mime_boundary_leader, opt->mime_boundary);
			extra_headers = subject_buffer;

			snprintf(buffer, sizeof(buffer) - 1,
				 "--%s%s\n"
				 "Content-Type: text/x-patch;\n"
				 " name=\"%s.diff\"\n"
				 "Content-Transfer-Encoding: 8bit\n"
				 "Content-Disposition: inline;\n"
				 " filename=\"%s.diff\"\n\n",
				 mime_boundary_leader, opt->mime_boundary,
				 sha1, sha1);
			opt->diffopt.stat_sep = buffer;
		}
	} else {
		fputs(diff_get_color(opt->diffopt.color_diff, DIFF_COMMIT),
		      stdout);
		if (opt->commit_format != CMIT_FMT_ONELINE)
			fputs("commit ", stdout);
		if (opt->left_right) {
			if (commit->object.flags & BOUNDARY)
				putchar('-');
			else if (commit->object.flags & SYMMETRIC_LEFT)
				putchar('<');
			else
				putchar('>');
		}
		fputs(diff_unique_abbrev(commit->object.sha1, abbrev_commit),
		      stdout);
		if (opt->parents)
			show_parents(commit, abbrev_commit);
		if (parent)
			printf(" (from %s)",
			       diff_unique_abbrev(parent->object.sha1,
						  abbrev_commit));
		printf("%s",
		       diff_get_color(opt->diffopt.color_diff, DIFF_RESET));
		putchar(opt->commit_format == CMIT_FMT_ONELINE ? ' ' : '\n');
		if (opt->reflog_info) {
			show_reflog_message(opt->reflog_info,
				    opt->commit_format == CMIT_FMT_ONELINE);;
			if (opt->commit_format == CMIT_FMT_ONELINE) {
				printf("%s", sep);
				return;
			}
		}
	}

	/*
	 * And then the pretty-printed message itself
	 */
	len = pretty_print_commit(opt->commit_format, commit, ~0u, this_header,
				  sizeof(this_header), abbrev, subject,
				  extra_headers, opt->relative_date);

	if (opt->add_signoff)
		len = append_signoff(this_header, sizeof(this_header), len,
				     opt->add_signoff);
	printf("%s%s%s", this_header, extra, sep);
}

int log_tree_diff_flush(struct rev_info *opt)
{
	diffcore_std(&opt->diffopt);

	if (diff_queue_is_empty()) {
		int saved_fmt = opt->diffopt.output_format;
		opt->diffopt.output_format = DIFF_FORMAT_NO_OUTPUT;
		diff_flush(&opt->diffopt);
		opt->diffopt.output_format = saved_fmt;
		return 0;
	}

	if (opt->loginfo && !opt->no_commit_id) {
		/* When showing a verbose header (i.e. log message),
		 * and not in --pretty=oneline format, we would want
		 * an extra newline between the end of log and the
		 * output for readability.
		 */
		show_log(opt, opt->diffopt.msg_sep);
		if (opt->verbose_header &&
		    opt->commit_format != CMIT_FMT_ONELINE) {
			int pch = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_PATCH;
			if ((pch & opt->diffopt.output_format) == pch)
				printf("---%c", opt->diffopt.line_termination);
			else
				putchar(opt->diffopt.line_termination);
		}
	}
	diff_flush(&opt->diffopt);
	return 1;
}

static int do_diff_combined(struct rev_info *opt, struct commit *commit)
{
	unsigned const char *sha1 = commit->object.sha1;

	diff_tree_combined_merge(sha1, opt->dense_combined_merges, opt);
	return !opt->loginfo;
}

/*
 * Show the diff of a commit.
 *
 * Return true if we printed any log info messages
 */
static int log_tree_diff(struct rev_info *opt, struct commit *commit, struct log_info *log)
{
	int showed_log;
	struct commit_list *parents;
	unsigned const char *sha1 = commit->object.sha1;

	if (!opt->diff)
		return 0;

	/* Root commit? */
	parents = commit->parents;
	if (!parents) {
		if (opt->show_root_diff) {
			diff_root_tree_sha1(sha1, "", &opt->diffopt);
			log_tree_diff_flush(opt);
		}
		return !opt->loginfo;
	}

	/* More than one parent? */
	if (parents && parents->next) {
		if (opt->ignore_merges)
			return 0;
		else if (opt->combine_merges)
			return do_diff_combined(opt, commit);

		/* If we show individual diffs, show the parent info */
		log->parent = parents->item;
	}

	showed_log = 0;
	for (;;) {
		struct commit *parent = parents->item;

		diff_tree_sha1(parent->object.sha1, sha1, "", &opt->diffopt);
		log_tree_diff_flush(opt);

		showed_log |= !opt->loginfo;

		/* Set up the log info for the next parent, if any.. */
		parents = parents->next;
		if (!parents)
			break;
		log->parent = parents->item;
		opt->loginfo = log;
	}
	return showed_log;
}

int log_tree_commit(struct rev_info *opt, struct commit *commit)
{
	struct log_info log;
	int shown;

	log.commit = commit;
	log.parent = NULL;
	opt->loginfo = &log;

	shown = log_tree_diff(opt, commit, &log);
	if (!shown && opt->loginfo && opt->always_show_header) {
		log.parent = NULL;
		show_log(opt, "");
		shown = 1;
	}
	opt->loginfo = NULL;
	return shown;
}
Commit	Line	Data
5f1c3f07 JH	1	#include "cache.h"
	2	#include "diff.h"
	3	#include "commit.h"
	4	#include "log-tree.h"
8860fd42	5	#include "reflog-walk.h"
5f1c3f07	6
c8c893c6 LT	7	static void show_parents(struct commit *commit, int abbrev)
	8	{
	9	struct commit_list *p;
	10	for (p = commit->parents; p ; p = p->next) {
	11	struct commit *parent = p->item;
	12	printf(" %s", diff_unique_abbrev(parent->object.sha1, abbrev));
	13	}
	14	}
	15
fc1c75ec FBH	16	/*
	17	* Search for "^[-A-Za-z]+: [^@]+@" pattern. It usually matches
	18	* Signed-off-by: and Acked-by: lines.
	19	*/
	20	static int detect_any_signoff(char *letter, int size)
	21	{
	22	char ch, *cp;
	23	int seen_colon = 0;
	24	int seen_at = 0;
	25	int seen_name = 0;
	26	int seen_head = 0;
	27
	28	cp = letter + size;
	29	while (letter <= --cp && (ch = *cp) == '\n')
	30	continue;
	31
	32	while (letter <= cp) {
	33	ch = *cp--;
	34	if (ch == '\n')
	35	break;
	36
	37	if (!seen_at) {
	38	if (ch == '@')
	39	seen_at = 1;
	40	continue;
	41	}
	42	if (!seen_colon) {
	43	if (ch == '@')
	44	return 0;
	45	else if (ch == ':')
	46	seen_colon = 1;
	47	else
	48	seen_name = 1;
	49	continue;
	50	}
	51	if (('A' <= ch && ch <= 'Z') \|\|
	52	('a' <= ch && ch <= 'z') \|\|
	53	ch == '-') {
	54	seen_head = 1;
	55	continue;
	56	}
	57	/* no empty last line doesn't match */
	58	return 0;
	59	}
	60	return seen_head && seen_name;
	61	}
	62
cf2251b6 JH	63	static int append_signoff(char buf, int buf_sz, int at, const char signoff)
cf2251b6 JH	64	{
cf2251b6	65	static const char signed_off_by[] = "Signed-off-by: ";
fc1c75ec FBH	66	int signoff_len = strlen(signoff);
fc1c75ec FBH	67	int has_signoff = 0;
cf2251b6 JH	68	char *cp = buf;
	69
	70	/* Do we have enough space to add it? */
c35f4c37	71	if (buf_sz - at <= strlen(signed_off_by) + signoff_len + 3)
cf2251b6 JH	72	return at;
	73
	74	/* First see if we already have the sign-off by the signer */
fc1c75ec FBH	75	while ((cp = strstr(cp, signed_off_by))) {
	76
	77	has_signoff = 1;
	78
cf2251b6	79	cp += strlen(signed_off_by);
fc1c75ec FBH	80	if (cp + signoff_len >= buf + at)
	81	break;
	82	if (strncmp(cp, signoff, signoff_len))
	83	continue;
	84	if (!isspace(cp[signoff_len]))
	85	continue;
	86	/* we already have him */
	87	return at;
cf2251b6 JH	88	}
cf2251b6 JH	89
fc1c75ec FBH	90	if (!has_signoff)
	91	has_signoff = detect_any_signoff(buf, at);
	92
	93	if (!has_signoff)
	94	buf[at++] = '\n';
c35f4c37	95
cf2251b6 JH	96	strcpy(buf + at, signed_off_by);
	97	at += strlen(signed_off_by);
	98	strcpy(buf + at, signoff);
	99	at += signoff_len;
	100	buf[at++] = '\n';
	101	buf[at] = 0;
	102	return at;
	103	}
	104
39bc9a6c	105	void show_log(struct rev_info opt, const char sep)
91539833 LT	106	{
91539833 LT	107	static char this_header[16384];
39bc9a6c	108	struct log_info *log = opt->loginfo;
91539833 LT	109	struct commit commit = log->commit, parent = log->parent;
	110	int abbrev = opt->diffopt.abbrev;
	111	int abbrev_commit = opt->abbrev_commit ? opt->abbrev : 40;
a4d34e2d	112	const char *extra;
91539833	113	int len;
20ff0680	114	const char subject = NULL, extra_headers = opt->extra_headers;
91539833 LT	115
	116	opt->loginfo = NULL;
	117	if (!opt->verbose_header) {
74bd9029 JH	118	if (opt->left_right) {
	119	if (commit->object.flags & BOUNDARY)
	120	putchar('-');
	121	else if (commit->object.flags & SYMMETRIC_LEFT)
	122	putchar('<');
	123	else
	124	putchar('>');
	125	}
c8c893c6 LT	126	fputs(diff_unique_abbrev(commit->object.sha1, abbrev_commit), stdout);
	127	if (opt->parents)
	128	show_parents(commit, abbrev_commit);
1dcb6922	129	putchar(opt->diffopt.line_termination);
91539833 LT	130	return;
	131	}
	132
	133	/*
a4d34e2d LT	134	* The "oneline" format has several special cases:
	135	* - The pretty-printed commit lacks a newline at the end
	136	* of the buffer, but we do want to make sure that we
	137	* have a newline there. If the separator isn't already
	138	* a newline, add an extra one.
	139	* - unlike other log messages, the one-line format does
	140	* not have an empty line between entries.
91539833	141	*/
a4d34e2d LT	142	extra = "";
	143	if (*sep != '\n' && opt->commit_format == CMIT_FMT_ONELINE)
	144	extra = "\n";
91539833 LT	145	if (opt->shown_one && opt->commit_format != CMIT_FMT_ONELINE)
	146	putchar('\n');
	147	opt->shown_one = 1;
	148
	149	/*
	150	* Print header line of header..
	151	*/
3eefc189	152
596524b3	153	if (opt->commit_format == CMIT_FMT_EMAIL) {
698ce6f8	154	char *sha1 = sha1_to_hex(commit->object.sha1);
596524b3 JS	155	if (opt->total > 0) {
	156	static char buffer[64];
	157	snprintf(buffer, sizeof(buffer),
	158	"Subject: [PATCH %d/%d] ",
	159	opt->nr, opt->total);
	160	subject = buffer;
8ac80a57	161	} else if (opt->total == 0)
596524b3	162	subject = "Subject: [PATCH] ";
8ac80a57 JS	163	else
	164	subject = "Subject: ";
	165
698ce6f8	166	printf("From %s Mon Sep 17 00:00:00 2001\n", sha1);
d1566f78 JT	167	if (opt->message_id)
	168	printf("Message-Id: <%s>\n", opt->message_id);
	169	if (opt->ref_message_id)
	170	printf("In-Reply-To: <%s>\nReferences: <%s>\n",
	171	opt->ref_message_id, opt->ref_message_id);
698ce6f8 JS	172	if (opt->mime_boundary) {
	173	static char subject_buffer[1024];
	174	static char buffer[1024];
	175	snprintf(subject_buffer, sizeof(subject_buffer) - 1,
20ff0680	176	"%s"
698ce6f8 JS	177	"MIME-Version: 1.0\n"
	178	"Content-Type: multipart/mixed;\n"
	179	" boundary=\"%s%s\"\n"
	180	"\n"
	181	"This is a multi-part message in MIME "
	182	"format.\n"
	183	"--%s%s\n"
	184	"Content-Type: text/plain; "
	185	"charset=UTF-8; format=fixed\n"
	186	"Content-Transfer-Encoding: 8bit\n\n",
20ff0680	187	extra_headers ? extra_headers : "",
698ce6f8 JS	188	mime_boundary_leader, opt->mime_boundary,
698ce6f8 JS	189	mime_boundary_leader, opt->mime_boundary);
20ff0680	190	extra_headers = subject_buffer;
698ce6f8 JS	191
	192	snprintf(buffer, sizeof(buffer) - 1,
	193	"--%s%s\n"
	194	"Content-Type: text/x-patch;\n"
	195	" name=\"%s.diff\"\n"
	196	"Content-Transfer-Encoding: 8bit\n"
	197	"Content-Disposition: inline;\n"
	198	" filename=\"%s.diff\"\n\n",
	199	mime_boundary_leader, opt->mime_boundary,
	200	sha1, sha1);
	201	opt->diffopt.stat_sep = buffer;
	202	}
596524b3	203	} else {
74bd9029 JH	204	fputs(diff_get_color(opt->diffopt.color_diff, DIFF_COMMIT),
	205	stdout);
	206	if (opt->commit_format != CMIT_FMT_ONELINE)
	207	fputs("commit ", stdout);
	208	if (opt->left_right) {
	209	if (commit->object.flags & BOUNDARY)
	210	putchar('-');
	211	else if (commit->object.flags & SYMMETRIC_LEFT)
	212	putchar('<');
	213	else
	214	putchar('>');
	215	}
	216	fputs(diff_unique_abbrev(commit->object.sha1, abbrev_commit),
	217	stdout);
c66b6c06 JH	218	if (opt->parents)
c66b6c06 JH	219	show_parents(commit, abbrev_commit);
73f0a157	220	if (parent)
3eefc189 JH	221	printf(" (from %s)",
	222	diff_unique_abbrev(parent->object.sha1,
	223	abbrev_commit));
ce436973 JK	224	printf("%s",
ce436973 JK	225	diff_get_color(opt->diffopt.color_diff, DIFF_RESET));
e557667e	226	putchar(opt->commit_format == CMIT_FMT_ONELINE ? ' ' : '\n');
903b45fe	227	if (opt->reflog_info) {
4d12a471 JH	228	show_reflog_message(opt->reflog_info,
4d12a471 JH	229	opt->commit_format == CMIT_FMT_ONELINE);;
903b45fe NP	230	if (opt->commit_format == CMIT_FMT_ONELINE) {
	231	printf("%s", sep);
	232	return;
	233	}
	234	}
3eefc189	235	}
91539833 LT	236
	237	/*
	238	* And then the pretty-printed message itself
	239	*/
3dfb9278 JF	240	len = pretty_print_commit(opt->commit_format, commit, ~0u, this_header,
	241	sizeof(this_header), abbrev, subject,
	242	extra_headers, opt->relative_date);
cf2251b6 JH	243
	244	if (opt->add_signoff)
	245	len = append_signoff(this_header, sizeof(this_header), len,
	246	opt->add_signoff);
a4d34e2d	247	printf("%s%s%s", this_header, extra, sep);
91539833 LT	248	}
91539833 LT	249
cd2bdc53	250	int log_tree_diff_flush(struct rev_info *opt)
5f1c3f07 JH	251	{
5f1c3f07 JH	252	diffcore_std(&opt->diffopt);
91539833	253
5f1c3f07 JH	254	if (diff_queue_is_empty()) {
	255	int saved_fmt = opt->diffopt.output_format;
	256	opt->diffopt.output_format = DIFF_FORMAT_NO_OUTPUT;
	257	diff_flush(&opt->diffopt);
	258	opt->diffopt.output_format = saved_fmt;
	259	return 0;
	260	}
91539833	261
3969cf7d JH	262	if (opt->loginfo && !opt->no_commit_id) {
	263	/* When showing a verbose header (i.e. log message),
	264	* and not in --pretty=oneline format, we would want
	265	* an extra newline between the end of log and the
	266	* output for readability.
	267	*/
39bc9a6c	268	show_log(opt, opt->diffopt.msg_sep);
3969cf7d JH	269	if (opt->verbose_header &&
	270	opt->commit_format != CMIT_FMT_ONELINE) {
	271	int pch = DIFF_FORMAT_DIFFSTAT \| DIFF_FORMAT_PATCH;
	272	if ((pch & opt->diffopt.output_format) == pch)
	273	printf("---%c", opt->diffopt.line_termination);
	274	else
	275	putchar(opt->diffopt.line_termination);
	276	}
	277	}
5f1c3f07 JH	278	diff_flush(&opt->diffopt);
	279	return 1;
	280	}
	281
cd2bdc53	282	static int do_diff_combined(struct rev_info opt, struct commit commit)
5f1c3f07 JH	283	{
	284	unsigned const char *sha1 = commit->object.sha1;
	285
91539833 LT	286	diff_tree_combined_merge(sha1, opt->dense_combined_merges, opt);
91539833 LT	287	return !opt->loginfo;
5f1c3f07 JH	288	}
5f1c3f07 JH	289
91539833 LT	290	/*
	291	* Show the diff of a commit.
	292	*
	293	* Return true if we printed any log info messages
	294	*/
	295	static int log_tree_diff(struct rev_info opt, struct commit commit, struct log_info *log)
5f1c3f07	296	{
91539833	297	int showed_log;
5f1c3f07 JH	298	struct commit_list *parents;
	299	unsigned const char *sha1 = commit->object.sha1;
	300
91539833 LT	301	if (!opt->diff)
	302	return 0;
	303
5f1c3f07	304	/* Root commit? */
91539833 LT	305	parents = commit->parents;
91539833 LT	306	if (!parents) {
2b60356d RS	307	if (opt->show_root_diff) {
	308	diff_root_tree_sha1(sha1, "", &opt->diffopt);
	309	log_tree_diff_flush(opt);
	310	}
91539833	311	return !opt->loginfo;
5f1c3f07 JH	312	}
	313
	314	/* More than one parent? */
91539833	315	if (parents && parents->next) {
5f1c3f07 JH	316	if (opt->ignore_merges)
	317	return 0;
	318	else if (opt->combine_merges)
	319	return do_diff_combined(opt, commit);
91539833 LT	320
	321	/* If we show individual diffs, show the parent info */
	322	log->parent = parents->item;
5f1c3f07 JH	323	}
5f1c3f07 JH	324
91539833 LT	325	showed_log = 0;
91539833 LT	326	for (;;) {
5f1c3f07	327	struct commit *parent = parents->item;
5f1c3f07	328
91539833 LT	329	diff_tree_sha1(parent->object.sha1, sha1, "", &opt->diffopt);
	330	log_tree_diff_flush(opt);
	331
	332	showed_log \|= !opt->loginfo;
	333
	334	/* Set up the log info for the next parent, if any.. */
	335	parents = parents->next;
	336	if (!parents)
	337	break;
	338	log->parent = parents->item;
	339	opt->loginfo = log;
	340	}
	341	return showed_log;
	342	}
	343
	344	int log_tree_commit(struct rev_info opt, struct commit commit)
	345	{
	346	struct log_info log;
3eefc189	347	int shown;
91539833 LT	348
	349	log.commit = commit;
	350	log.parent = NULL;
	351	opt->loginfo = &log;
	352
3eefc189 JH	353	shown = log_tree_diff(opt, commit, &log);
3eefc189 JH	354	if (!shown && opt->loginfo && opt->always_show_header) {
91539833	355	log.parent = NULL;
39bc9a6c	356	show_log(opt, "");
3eefc189	357	shown = 1;
5f1c3f07	358	}
91539833	359	opt->loginfo = NULL;
3eefc189	360	return shown;
5f1c3f07	361	}