summaryrefslogtreecommitdiff
path: root/builtin/branch.c
blob: d6ab93bfbb369965e76e384e6984a29b667cdfbe (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
/*
 * Builtin "git branch"
 *
 * Copyright (c) 2006 Kristian Høgsberg <krh@redhat.com>
 * Based on git-branch.sh by Junio C Hamano.
 */

#include "cache.h"
#include "color.h"
#include "refs.h"
#include "commit.h"
#include "builtin.h"
#include "remote.h"
#include "parse-options.h"
#include "branch.h"
#include "diff.h"
#include "revision.h"

static const char * const builtin_branch_usage[] = {
	"git branch [options] [-r | -a] [--merged | --no-merged]",
	"git branch [options] [-l] [-f] <branchname> [<start-point>]",
	"git branch [options] [-r] (-d | -D) <branchname>",
	"git branch [options] (-m | -M) [<oldbranch>] <newbranch>",
	NULL
};

#define REF_LOCAL_BRANCH    0x01
#define REF_REMOTE_BRANCH   0x02

static const char *head;
static unsigned char head_sha1[20];

static int branch_use_color = -1;
static char branch_colors[][COLOR_MAXLEN] = {
	GIT_COLOR_RESET,
	GIT_COLOR_NORMAL,	/* PLAIN */
	GIT_COLOR_RED,		/* REMOTE */
	GIT_COLOR_NORMAL,	/* LOCAL */
	GIT_COLOR_GREEN,	/* CURRENT */
};
enum color_branch {
	BRANCH_COLOR_RESET = 0,
	BRANCH_COLOR_PLAIN = 1,
	BRANCH_COLOR_REMOTE = 2,
	BRANCH_COLOR_LOCAL = 3,
	BRANCH_COLOR_CURRENT = 4
};

static enum merge_filter {
	NO_FILTER = 0,
	SHOW_NOT_MERGED,
	SHOW_MERGED
} merge_filter;
static unsigned char merge_filter_ref[20];

static int parse_branch_color_slot(const char *var, int ofs)
{
	if (!strcasecmp(var+ofs, "plain"))
		return BRANCH_COLOR_PLAIN;
	if (!strcasecmp(var+ofs, "reset"))
		return BRANCH_COLOR_RESET;
	if (!strcasecmp(var+ofs, "remote"))
		return BRANCH_COLOR_REMOTE;
	if (!strcasecmp(var+ofs, "local"))
		return BRANCH_COLOR_LOCAL;
	if (!strcasecmp(var+ofs, "current"))
		return BRANCH_COLOR_CURRENT;
	return -1;
}

static int git_branch_config(const char *var, const char *value, void *cb)
{
	if (!strcmp(var, "color.branch")) {
		branch_use_color = git_config_colorbool(var, value, -1);
		return 0;
	}
	if (!prefixcmp(var, "color.branch.")) {
		int slot = parse_branch_color_slot(var, 13);
		if (slot < 0)
			return 0;
		if (!value)
			return config_error_nonbool(var);
		color_parse(value, var, branch_colors[slot]);
		return 0;
	}
	return git_color_default_config(var, value, cb);
}

static const char *branch_get_color(enum color_branch ix)
{
	if (branch_use_color > 0)
		return branch_colors[ix];
	return "";
}

static int branch_merged(int kind, const char *name,
			 struct commit *rev, struct commit *head_rev)
{
	/*
	 * This checks whether the merge bases of branch and HEAD (or
	 * the other branch this branch builds upon) contains the
	 * branch, which means that the branch has already been merged
	 * safely to HEAD (or the other branch).
	 */
	struct commit *reference_rev = NULL;
	const char *reference_name = NULL;
	int merged;

	if (kind == REF_LOCAL_BRANCH) {
		struct branch *branch = branch_get(name);
		unsigned char sha1[20];

		if (branch &&
		    branch->merge &&
		    branch->merge[0] &&
		    branch->merge[0]->dst &&
		    (reference_name =
		     resolve_ref(branch->merge[0]->dst, sha1, 1, NULL)) != NULL)
			reference_rev = lookup_commit_reference(sha1);
	}
	if (!reference_rev)
		reference_rev = head_rev;

	merged = in_merge_bases(rev, &reference_rev, 1);

	/*
	 * After the safety valve is fully redefined to "check with
	 * upstream, if any, otherwise with HEAD", we should just
	 * return the result of the in_merge_bases() above without
	 * any of the following code, but during the transition period,
	 * a gentle reminder is in order.
	 */
	if ((head_rev != reference_rev) &&
	    in_merge_bases(rev, &head_rev, 1) != merged) {
		if (merged)
			warning(_("deleting branch '%s' that has been merged to\n"
				"         '%s', but not yet merged to HEAD."),
				name, reference_name);
		else
			warning(_("not deleting branch '%s' that is not yet merged to\n"
				"         '%s', even though it is merged to HEAD."),
				name, reference_name);
	}
	return merged;
}

static int delete_branches(int argc, const char **argv, int force, int kinds)
{
	struct commit *rev, *head_rev = NULL;
	unsigned char sha1[20];
	char *name = NULL;
	const char *fmt, *remote;
	int i;
	int ret = 0;
	struct strbuf bname = STRBUF_INIT;

	switch (kinds) {
	case REF_REMOTE_BRANCH:
		fmt = "refs/remotes/%s";
		/* TRANSLATORS: This is "remote " in "remote branch '%s' not found" */
		remote = _("remote ");
		force = 1;
		break;
	case REF_LOCAL_BRANCH:
		fmt = "refs/heads/%s";
		remote = "";
		break;
	default:
		die(_("cannot use -a with -d"));
	}

	if (!force) {
		head_rev = lookup_commit_reference(head_sha1);
		if (!head_rev)
			die(_("Couldn't look up commit object for HEAD"));
	}
	for (i = 0; i < argc; i++, strbuf_release(&bname)) {
		strbuf_branchname(&bname, argv[i]);
		if (kinds == REF_LOCAL_BRANCH && !strcmp(head, bname.buf)) {
			error(_("Cannot delete the branch '%s' "
			      "which you are currently on."), bname.buf);
			ret = 1;
			continue;
		}

		free(name);

		name = xstrdup(mkpath(fmt, bname.buf));
		if (!resolve_ref(name, sha1, 1, NULL)) {
			error(_("%sbranch '%s' not found."),
					remote, bname.buf);
			ret = 1;
			continue;
		}

		rev = lookup_commit_reference(sha1);
		if (!rev) {
			error(_("Couldn't look up commit object for '%s'"), name);
			ret = 1;
			continue;
		}

		if (!force && !branch_merged(kinds, bname.buf, rev, head_rev)) {
			error(_("The branch '%s' is not fully merged.\n"
			      "If you are sure you want to delete it, "
			      "run 'git branch -D %s'."), bname.buf, bname.buf);
			ret = 1;
			continue;
		}

		if (delete_ref(name, sha1, 0)) {
			error(_("Error deleting %sbranch '%s'"), remote,
			      bname.buf);
			ret = 1;
		} else {
			struct strbuf buf = STRBUF_INIT;
			printf(_("Deleted %sbranch %s (was %s).\n"), remote,
			       bname.buf,
			       find_unique_abbrev(sha1, DEFAULT_ABBREV));
			strbuf_addf(&buf, "branch.%s", bname.buf);
			if (git_config_rename_section(buf.buf, NULL) < 0)
				warning(_("Update of config-file failed"));
			strbuf_release(&buf);
		}
	}

	free(name);

	return(ret);
}

struct ref_item {
	char *name;
	char *dest;
	unsigned int kind, len;
	struct commit *commit;
};

struct ref_list {
	struct rev_info revs;
	int index, alloc, maxwidth, verbose, abbrev;
	struct ref_item *list;
	struct commit_list *with_commit;
	int kinds;
};

static char *resolve_symref(const char *src, const char *prefix)
{
	unsigned char sha1[20];
	int flag;
	const char *dst, *cp;

	dst = resolve_ref(src, sha1, 0, &flag);
	if (!(dst && (flag & REF_ISSYMREF)))
		return NULL;
	if (prefix && (cp = skip_prefix(dst, prefix)))
		dst = cp;
	return xstrdup(dst);
}

struct append_ref_cb {
	struct ref_list *ref_list;
	int ret;
};

static int append_ref(const char *refname, const unsigned char *sha1, int flags, void *cb_data)
{
	struct append_ref_cb *cb = (struct append_ref_cb *)(cb_data);
	struct ref_list *ref_list = cb->ref_list;
	struct ref_item *newitem;
	struct commit *commit;
	int kind, i;
	const char *prefix, *orig_refname = refname;

	static struct {
		int kind;
		const char *prefix;
		int pfxlen;
	} ref_kind[] = {
		{ REF_LOCAL_BRANCH, "refs/heads/", 11 },
		{ REF_REMOTE_BRANCH, "refs/remotes/", 13 },
	};

	/* Detect kind */
	for (i = 0; i < ARRAY_SIZE(ref_kind); i++) {
		prefix = ref_kind[i].prefix;
		if (strncmp(refname, prefix, ref_kind[i].pfxlen))
			continue;
		kind = ref_kind[i].kind;
		refname += ref_kind[i].pfxlen;
		break;
	}
	if (ARRAY_SIZE(ref_kind) <= i)
		return 0;

	/* Don't add types the caller doesn't want */
	if ((kind & ref_list->kinds) == 0)
		return 0;

	commit = NULL;
	if (ref_list->verbose || ref_list->with_commit || merge_filter != NO_FILTER) {
		commit = lookup_commit_reference_gently(sha1, 1);
		if (!commit) {
			cb->ret = error(_("branch '%s' does not point at a commit"), refname);
			return 0;
		}

		/* Filter with with_commit if specified */
		if (!is_descendant_of(commit, ref_list->with_commit))
			return 0;

		if (merge_filter != NO_FILTER)
			add_pending_object(&ref_list->revs,
					   (struct object *)commit, refname);
	}

	ALLOC_GROW(ref_list->list, ref_list->index + 1, ref_list->alloc);

	/* Record the new item */
	newitem = &(ref_list->list[ref_list->index++]);
	newitem->name = xstrdup(refname);
	newitem->kind = kind;
	newitem->commit = commit;
	newitem->len = strlen(refname);
	newitem->dest = resolve_symref(orig_refname, prefix);
	/* adjust for "remotes/" */
	if (newitem->kind == REF_REMOTE_BRANCH &&
	    ref_list->kinds != REF_REMOTE_BRANCH)
		newitem->len += 8;
	if (newitem->len > ref_list->maxwidth)
		ref_list->maxwidth = newitem->len;

	return 0;
}

static void free_ref_list(struct ref_list *ref_list)
{
	int i;

	for (i = 0; i < ref_list->index; i++) {
		free(ref_list->list[i].name);
		free(ref_list->list[i].dest);
	}
	free(ref_list->list);
}

static int ref_cmp(const void *r1, const void *r2)
{
	struct ref_item *c1 = (struct ref_item *)(r1);
	struct ref_item *c2 = (struct ref_item *)(r2);

	if (c1->kind != c2->kind)
		return c1->kind - c2->kind;
	return strcmp(c1->name, c2->name);
}

static void fill_tracking_info(struct strbuf *stat, const char *branch_name,
		int show_upstream_ref)
{
	int ours, theirs;
	struct branch *branch = branch_get(branch_name);

	if (!stat_tracking_info(branch, &ours, &theirs)) {
		if (branch && branch->merge && branch->merge[0]->dst &&
		    show_upstream_ref)
			strbuf_addf(stat, "[%s] ",
			    shorten_unambiguous_ref(branch->merge[0]->dst, 0));
		return;
	}

	strbuf_addch(stat, '[');
	if (show_upstream_ref)
		strbuf_addf(stat, "%s: ",
			shorten_unambiguous_ref(branch->merge[0]->dst, 0));
	if (!ours)
		strbuf_addf(stat, _("behind %d] "), theirs);
	else if (!theirs)
		strbuf_addf(stat, _("ahead %d] "), ours);
	else
		strbuf_addf(stat, _("ahead %d, behind %d] "), ours, theirs);
}

static int matches_merge_filter(struct commit *commit)
{
	int is_merged;

	if (merge_filter == NO_FILTER)
		return 1;

	is_merged = !!(commit->object.flags & UNINTERESTING);
	return (is_merged == (merge_filter == SHOW_MERGED));
}

static void add_verbose_info(struct strbuf *out, struct ref_item *item,
			     int verbose, int abbrev)
{
	struct strbuf subject = STRBUF_INIT, stat = STRBUF_INIT;
	const char *sub = " **** invalid ref ****";
	struct commit *commit = item->commit;

	if (commit && !parse_commit(commit)) {
		pp_commit_easy(CMIT_FMT_ONELINE, commit, &subject);
		sub = subject.buf;
	}

	if (item->kind == REF_LOCAL_BRANCH)
		fill_tracking_info(&stat, item->name, verbose > 1);

	strbuf_addf(out, " %s %s%s",
		find_unique_abbrev(item->commit->object.sha1, abbrev),
		stat.buf, sub);
	strbuf_release(&stat);
	strbuf_release(&subject);
}

static void print_ref_item(struct ref_item *item, int maxwidth, int verbose,
			   int abbrev, int current, char *prefix)
{
	char c;
	int color;
	struct commit *commit = item->commit;
	struct strbuf out = STRBUF_INIT, name = STRBUF_INIT;

	if (!matches_merge_filter(commit))
		return;

	switch (item->kind) {
	case REF_LOCAL_BRANCH:
		color = BRANCH_COLOR_LOCAL;
		break;
	case REF_REMOTE_BRANCH:
		color = BRANCH_COLOR_REMOTE;
		break;
	default:
		color = BRANCH_COLOR_PLAIN;
		break;
	}

	c = ' ';
	if (current) {
		c = '*';
		color = BRANCH_COLOR_CURRENT;
	}

	strbuf_addf(&name, "%s%s", prefix, item->name);
	if (verbose)
		strbuf_addf(&out, "%c %s%-*s%s", c, branch_get_color(color),
			    maxwidth, name.buf,
			    branch_get_color(BRANCH_COLOR_RESET));
	else
		strbuf_addf(&out, "%c %s%s%s", c, branch_get_color(color),
			    name.buf, branch_get_color(BRANCH_COLOR_RESET));

	if (item->dest)
		strbuf_addf(&out, " -> %s", item->dest);
	else if (verbose)
		/* " f7c0c00 [ahead 58, behind 197] vcs-svn: drop obj_pool.h" */
		add_verbose_info(&out, item, verbose, abbrev);
	printf("%s\n", out.buf);
	strbuf_release(&name);
	strbuf_release(&out);
}

static int calc_maxwidth(struct ref_list *refs)
{
	int i, w = 0;
	for (i = 0; i < refs->index; i++) {
		if (!matches_merge_filter(refs->list[i].commit))
			continue;
		if (refs->list[i].len > w)
			w = refs->list[i].len;
	}
	return w;
}


static void show_detached(struct ref_list *ref_list)
{
	struct commit *head_commit = lookup_commit_reference_gently(head_sha1, 1);

	if (head_commit && is_descendant_of(head_commit, ref_list->with_commit)) {
		struct ref_item item;
		item.name = xstrdup(_("(no branch)"));
		item.len = strlen(item.name);
		item.kind = REF_LOCAL_BRANCH;
		item.dest = NULL;
		item.commit = head_commit;
		if (item.len > ref_list->maxwidth)
			ref_list->maxwidth = item.len;
		print_ref_item(&item, ref_list->maxwidth, ref_list->verbose, ref_list->abbrev, 1, "");
		free(item.name);
	}
}

static int print_ref_list(int kinds, int detached, int verbose, int abbrev, struct commit_list *with_commit)
{
	int i;
	struct append_ref_cb cb;
	struct ref_list ref_list;

	memset(&ref_list, 0, sizeof(ref_list));
	ref_list.kinds = kinds;
	ref_list.verbose = verbose;
	ref_list.abbrev = abbrev;
	ref_list.with_commit = with_commit;
	if (merge_filter != NO_FILTER)
		init_revisions(&ref_list.revs, NULL);
	cb.ref_list = &ref_list;
	cb.ret = 0;
	for_each_rawref(append_ref, &cb);
	if (merge_filter != NO_FILTER) {
		struct commit *filter;
		filter = lookup_commit_reference_gently(merge_filter_ref, 0);
		filter->object.flags |= UNINTERESTING;
		add_pending_object(&ref_list.revs,
				   (struct object *) filter, "");
		ref_list.revs.limited = 1;
		prepare_revision_walk(&ref_list.revs);
		if (verbose)
			ref_list.maxwidth = calc_maxwidth(&ref_list);
	}

	qsort(ref_list.list, ref_list.index, sizeof(struct ref_item), ref_cmp);

	detached = (detached && (kinds & REF_LOCAL_BRANCH));
	if (detached)
		show_detached(&ref_list);

	for (i = 0; i < ref_list.index; i++) {
		int current = !detached &&
			(ref_list.list[i].kind == REF_LOCAL_BRANCH) &&
			!strcmp(ref_list.list[i].name, head);
		char *prefix = (kinds != REF_REMOTE_BRANCH &&
				ref_list.list[i].kind == REF_REMOTE_BRANCH)
				? "remotes/" : "";
		print_ref_item(&ref_list.list[i], ref_list.maxwidth, verbose,
			       abbrev, current, prefix);
	}

	free_ref_list(&ref_list);

	if (cb.ret)
		error(_("some refs could not be read"));

	return cb.ret;
}

static void rename_branch(const char *oldname, const char *newname, int force)
{
	struct strbuf oldref = STRBUF_INIT, newref = STRBUF_INIT, logmsg = STRBUF_INIT;
	unsigned char sha1[20];
	struct strbuf oldsection = STRBUF_INIT, newsection = STRBUF_INIT;
	int recovery = 0;

	if (!oldname)
		die(_("cannot rename the current branch while not on any."));

	if (strbuf_check_branch_ref(&oldref, oldname)) {
		/*
		 * Bad name --- this could be an attempt to rename a
		 * ref that we used to allow to be created by accident.
		 */
		if (resolve_ref(oldref.buf, sha1, 1, NULL))
			recovery = 1;
		else
			die(_("Invalid branch name: '%s'"), oldname);
	}

	if (strbuf_check_branch_ref(&newref, newname))
		die(_("Invalid branch name: '%s'"), newname);

	if (resolve_ref(newref.buf, sha1, 1, NULL) && !force)
		die(_("A branch named '%s' already exists."), newref.buf + 11);

	strbuf_addf(&logmsg, "Branch: renamed %s to %s",
		 oldref.buf, newref.buf);

	if (rename_ref(oldref.buf, newref.buf, logmsg.buf))
		die(_("Branch rename failed"));
	strbuf_release(&logmsg);

	if (recovery)
		warning(_("Renamed a misnamed branch '%s' away"), oldref.buf + 11);

	/* no need to pass logmsg here as HEAD didn't really move */
	if (!strcmp(oldname, head) && create_symref("HEAD", newref.buf, NULL))
		die(_("Branch renamed to %s, but HEAD is not updated!"), newname);

	strbuf_addf(&oldsection, "branch.%s", oldref.buf + 11);
	strbuf_release(&oldref);
	strbuf_addf(&newsection, "branch.%s", newref.buf + 11);
	strbuf_release(&newref);
	if (git_config_rename_section(oldsection.buf, newsection.buf) < 0)
		die(_("Branch is renamed, but update of config-file failed"));
	strbuf_release(&oldsection);
	strbuf_release(&newsection);
}

static int opt_parse_merge_filter(const struct option *opt, const char *arg, int unset)
{
	merge_filter = ((opt->long_name[0] == 'n')
			? SHOW_NOT_MERGED
			: SHOW_MERGED);
	if (unset)
		merge_filter = SHOW_NOT_MERGED; /* b/c for --no-merged */
	if (!arg)
		arg = "HEAD";
	if (get_sha1(arg, merge_filter_ref))
		die(_("malformed object name %s"), arg);
	return 0;
}

int cmd_branch(int argc, const char **argv, const char *prefix)
{
	int delete = 0, rename = 0, force_create = 0;
	int verbose = 0, abbrev = DEFAULT_ABBREV, detached = 0;
	int reflog = 0;
	enum branch_track track;
	int kinds = REF_LOCAL_BRANCH;
	struct commit_list *with_commit = NULL;

	struct option options[] = {
		OPT_GROUP("Generic options"),
		OPT__VERBOSE(&verbose,
			"show hash and subject, give twice for upstream branch"),
		OPT_SET_INT('t', "track",  &track, "set up tracking mode (see git-pull(1))",
			BRANCH_TRACK_EXPLICIT),
		OPT_SET_INT( 0, "set-upstream",  &track, "change upstream info",
			BRANCH_TRACK_OVERRIDE),
		OPT__COLOR(&branch_use_color, "use colored output"),
		OPT_SET_INT('r', NULL,     &kinds, "act on remote-tracking branches",
			REF_REMOTE_BRANCH),
		{
			OPTION_CALLBACK, 0, "contains", &with_commit, "commit",
			"print only branches that contain the commit",
			PARSE_OPT_LASTARG_DEFAULT,
			parse_opt_with_commit, (intptr_t)"HEAD",
		},
		{
			OPTION_CALLBACK, 0, "with", &with_commit, "commit",
			"print only branches that contain the commit",
			PARSE_OPT_HIDDEN | PARSE_OPT_LASTARG_DEFAULT,
			parse_opt_with_commit, (intptr_t) "HEAD",
		},
		OPT__ABBREV(&abbrev),

		OPT_GROUP("Specific git-branch actions:"),
		OPT_SET_INT('a', NULL, &kinds, "list both remote-tracking and local branches",
			REF_REMOTE_BRANCH | REF_LOCAL_BRANCH),
		OPT_BIT('d', NULL, &delete, "delete fully merged branch", 1),
		OPT_BIT('D', NULL, &delete, "delete branch (even if not merged)", 2),
		OPT_BIT('m', NULL, &rename, "move/rename a branch and its reflog", 1),
		OPT_BIT('M', NULL, &rename, "move/rename a branch, even if target exists", 2),
		OPT_BOOLEAN('l', NULL, &reflog, "create the branch's reflog"),
		OPT__FORCE(&force_create, "force creation (when already exists)"),
		{
			OPTION_CALLBACK, 0, "no-merged", &merge_filter_ref,
			"commit", "print only not merged branches",
			PARSE_OPT_LASTARG_DEFAULT | PARSE_OPT_NONEG,
			opt_parse_merge_filter, (intptr_t) "HEAD",
		},
		{
			OPTION_CALLBACK, 0, "merged", &merge_filter_ref,
			"commit", "print only merged branches",
			PARSE_OPT_LASTARG_DEFAULT | PARSE_OPT_NONEG,
			opt_parse_merge_filter, (intptr_t) "HEAD",
		},
		OPT_END(),
	};

	if (argc == 2 && !strcmp(argv[1], "-h"))
		usage_with_options(builtin_branch_usage, options);

	git_config(git_branch_config, NULL);

	if (branch_use_color == -1)
		branch_use_color = git_use_color_default;

	track = git_branch_track;

	head = resolve_ref("HEAD", head_sha1, 0, NULL);
	if (!head)
		die(_("Failed to resolve HEAD as a valid ref."));
	head = xstrdup(head);
	if (!strcmp(head, "HEAD")) {
		detached = 1;
	} else {
		if (prefixcmp(head, "refs/heads/"))
			die(_("HEAD not found below refs/heads!"));
		head += 11;
	}
	hashcpy(merge_filter_ref, head_sha1);

	argc = parse_options(argc, argv, prefix, options, builtin_branch_usage,
			     0);
	if (!!delete + !!rename + !!force_create > 1)
		usage_with_options(builtin_branch_usage, options);

	if (delete)
		return delete_branches(argc, argv, delete > 1, kinds);
	else if (argc == 0)
		return print_ref_list(kinds, detached, verbose, abbrev, with_commit);
	else if (rename && (argc == 1))
		rename_branch(head, argv[0], rename > 1);
	else if (rename && (argc == 2))
		rename_branch(argv[0], argv[1], rename > 1);
	else if (argc <= 2) {
		if (kinds != REF_LOCAL_BRANCH)
			die(_("-a and -r options to 'git branch' do not make sense with a branch name"));
		create_branch(head, argv[0], (argc == 2) ? argv[1] : head,
			      force_create, reflog, track);
	} else
		usage_with_options(builtin_branch_usage, options);

	return 0;
}