[thirdparty/git.git] / revision.h

#ifndef REVISION_H
#define REVISION_H

#include "parse-options.h"
#include "grep.h"
#include "notes.h"
#include "pretty.h"
#include "diff.h"
#include "commit-slab-decl.h"

/* Remember to update object flag allocation in object.h */
#define SEEN		(1u<<0)
#define UNINTERESTING   (1u<<1)
#define TREESAME	(1u<<2)
#define SHOWN		(1u<<3)
#define TMP_MARK	(1u<<4) /* for isolated cases; clean after use */
#define BOUNDARY	(1u<<5)
#define CHILD_SHOWN	(1u<<6)
#define ADDED		(1u<<7)	/* Parents already parsed and added? */
#define SYMMETRIC_LEFT	(1u<<8)
#define PATCHSAME	(1u<<9)
#define BOTTOM		(1u<<10)
/*
 * Indicates object was reached by traversal. i.e. not given by user on
 * command-line or stdin.
 * NEEDSWORK: NOT_USER_GIVEN doesn't apply to commits because we only support
 * filtering trees and blobs, but it may be useful to support filtering commits
 * in the future.
 */
#define NOT_USER_GIVEN	(1u<<25)
#define TRACK_LINEAR	(1u<<26)
#define ALL_REV_FLAGS	(((1u<<11)-1) | NOT_USER_GIVEN | TRACK_LINEAR)

#define DECORATE_SHORT_REFS	1
#define DECORATE_FULL_REFS	2

struct rev_info;
struct log_info;
struct string_list;
struct saved_parents;
define_shared_commit_slab(revision_sources, char *);

struct rev_cmdline_info {
	unsigned int nr;
	unsigned int alloc;
	struct rev_cmdline_entry {
		struct object *item;
		const char *name;
		enum {
			REV_CMD_REF,
			REV_CMD_PARENTS_ONLY,
			REV_CMD_LEFT,
			REV_CMD_RIGHT,
			REV_CMD_MERGE_BASE,
			REV_CMD_REV
		} whence;
		unsigned flags;
	} *rev;
};

#define REVISION_WALK_WALK 0
#define REVISION_WALK_NO_WALK_SORTED 1
#define REVISION_WALK_NO_WALK_UNSORTED 2

struct rev_info {
	/* Starting list */
	struct commit_list *commits;
	struct object_array pending;

	/* Parents of shown commits */
	struct object_array boundary_commits;

	/* The end-points specified by the end user */
	struct rev_cmdline_info cmdline;

	/* excluding from --branches, --refs, etc. expansion */
	struct string_list *ref_excludes;

	/* Basic information */
	const char *prefix;
	const char *def;
	struct pathspec prune_data;

	/*
	 * Whether the arguments parsed by setup_revisions() included any
	 * "input" revisions that might still have yielded an empty pending
	 * list (e.g., patterns like "--all" or "--glob").
	 */
	int rev_input_given;

	/* topo-sort */
	enum rev_sort_order sort_order;

	unsigned int early_output;

	unsigned int	ignore_missing:1,
			ignore_missing_links:1;

	/* Traversal flags */
	unsigned int	dense:1,
			prune:1,
			no_walk:2,
			remove_empty_trees:1,
			simplify_history:1,
			topo_order:1,
			simplify_merges:1,
			simplify_by_decoration:1,
			single_worktree:1,
			tag_objects:1,
			tree_objects:1,
			blob_objects:1,
			verify_objects:1,
			edge_hint:1,
			edge_hint_aggressive:1,
			limited:1,
			unpacked:1,
			boundary:2,
			count:1,
			left_right:1,
			left_only:1,
			right_only:1,
			rewrite_parents:1,
			print_parents:1,
			show_decorations:1,
			reverse:1,
			reverse_output_stage:1,
			cherry_pick:1,
			cherry_mark:1,
			bisect:1,
			ancestry_path:1,
			first_parent_only:1,
			line_level_traverse:1,
			tree_blobs_in_commit_order:1,

			/*
			 * Blobs are shown without regard for their existence.
			 * But not so for trees: unless exclude_promisor_objects
			 * is set and the tree in question is a promisor object;
			 * OR ignore_missing_links is set, the revision walker
			 * dies with a "bad tree object HASH" message when
			 * encountering a missing tree. For callers that can
			 * handle missing trees and want them to be filterable
			 * and showable, set this to true. The revision walker
			 * will filter and show such a missing tree as usual,
			 * but will not attempt to recurse into this tree
			 * object.
			 */
			do_not_die_on_missing_tree:1,

			/* for internal use only */
			exclude_promisor_objects:1;

	/* Diff flags */
	unsigned int	diff:1,
			full_diff:1,
			show_root_diff:1,
			no_commit_id:1,
			verbose_header:1,
			ignore_merges:1,
			combine_merges:1,
			dense_combined_merges:1,
			always_show_header:1;

	/* Format info */
	unsigned int	shown_one:1,
			shown_dashes:1,
			show_merge:1,
			show_notes:1,
			show_notes_given:1,
			show_signature:1,
			pretty_given:1,
			abbrev_commit:1,
			abbrev_commit_given:1,
			zero_commit:1,
			use_terminator:1,
			missing_newline:1,
			date_mode_explicit:1,
			preserve_subject:1;
	unsigned int	disable_stdin:1;
	/* --show-linear-break */
	unsigned int	track_linear:1,
			track_first_time:1,
			linear:1;

	struct date_mode date_mode;
	int		expand_tabs_in_log; /* unset if negative */
	int		expand_tabs_in_log_default;

	unsigned int	abbrev;
	enum cmit_fmt	commit_format;
	struct log_info *loginfo;
	int		nr, total;
	const char	*mime_boundary;
	const char	*patch_suffix;
	int		numbered_files;
	int		reroll_count;
	char		*message_id;
	struct ident_split from_ident;
	struct string_list *ref_message_ids;
	int		add_signoff;
	const char	*extra_headers;
	const char	*log_reencode;
	const char	*subject_prefix;
	int		no_inline;
	int		show_log_size;
	struct string_list *mailmap;

	/* Filter by commit log message */
	struct grep_opt	grep_filter;
	/* Negate the match of grep_filter */
	int invert_grep;

	/* Display history graph */
	struct git_graph *graph;

	/* special limits */
	int skip_count;
	int max_count;
	timestamp_t max_age;
	timestamp_t min_age;
	int min_parents;
	int max_parents;
	int (*include_check)(struct commit *, void *);
	void *include_check_data;

	/* diff info for patches and for paths limiting */
	struct diff_options diffopt;
	struct diff_options pruning;

	struct reflog_walk_info *reflog_info;
	struct decoration children;
	struct decoration merge_simplification;
	struct decoration treesame;

	/* notes-specific options: which refs to show */
	struct display_notes_opt notes_opt;

	/* commit counts */
	int count_left;
	int count_right;
	int count_same;

	/* line level range that we are chasing */
	struct decoration line_log_data;

	/* copies of the parent lists, for --full-diff display */
	struct saved_parents *saved_parents_slab;

	struct commit_list *previous_parents;
	const char *break_bar;

	struct revision_sources *sources;
};

extern int ref_excluded(struct string_list *, const char *path);
void clear_ref_exclusion(struct string_list **);
void add_ref_exclusion(struct string_list **, const char *exclude);


#define REV_TREE_SAME		0
#define REV_TREE_NEW		1	/* Only new files */
#define REV_TREE_OLD		2	/* Only files removed */
#define REV_TREE_DIFFERENT	3	/* Mixed changes */

/* revision.c */
typedef void (*show_early_output_fn_t)(struct rev_info *, struct commit_list *);
extern volatile show_early_output_fn_t show_early_output;

struct setup_revision_opt {
	const char *def;
	void (*tweak)(struct rev_info *, struct setup_revision_opt *);
	const char *submodule;
	int assume_dashdash;
	unsigned revarg_opt;
};

extern void init_revisions(struct rev_info *revs, const char *prefix);
extern int setup_revisions(int argc, const char **argv, struct rev_info *revs,
			   struct setup_revision_opt *);
extern void parse_revision_opt(struct rev_info *revs, struct parse_opt_ctx_t *ctx,
			       const struct option *options,
			       const char * const usagestr[]);
#define REVARG_CANNOT_BE_FILENAME 01
#define REVARG_COMMITTISH 02
extern int handle_revision_arg(const char *arg, struct rev_info *revs,
			       int flags, unsigned revarg_opt);

extern void reset_revision_walk(void);
extern int prepare_revision_walk(struct rev_info *revs);
extern struct commit *get_revision(struct rev_info *revs);
extern char *get_revision_mark(const struct rev_info *revs,
			       const struct commit *commit);
extern void put_revision_mark(const struct rev_info *revs,
			      const struct commit *commit);

extern void mark_parents_uninteresting(struct commit *commit);
extern void mark_tree_uninteresting(struct tree *tree);

extern void show_object_with_name(FILE *, struct object *, const char *);

extern void add_pending_object(struct rev_info *revs,
			       struct object *obj, const char *name);
extern void add_pending_oid(struct rev_info *revs,
			    const char *name, const struct object_id *oid,
			    unsigned int flags);

extern void add_head_to_pending(struct rev_info *);
extern void add_reflogs_to_pending(struct rev_info *, unsigned int flags);
extern void add_index_objects_to_pending(struct rev_info *, unsigned int flags);

enum commit_action {
	commit_ignore,
	commit_show,
	commit_error
};

extern enum commit_action get_commit_action(struct rev_info *revs,
					    struct commit *commit);
extern enum commit_action simplify_commit(struct rev_info *revs,
					  struct commit *commit);

enum rewrite_result {
	rewrite_one_ok,
	rewrite_one_noparents,
	rewrite_one_error
};

typedef enum rewrite_result (*rewrite_parent_fn_t)(struct rev_info *revs, struct commit **pp);

extern int rewrite_parents(struct rev_info *revs, struct commit *commit,
	rewrite_parent_fn_t rewrite_parent);

/*
 * The log machinery saves the original parent list so that
 * get_saved_parents() can later tell what the real parents of the
 * commits are, when commit->parents has been modified by history
 * simpification.
 *
 * get_saved_parents() will transparently return commit->parents if
 * history simplification is off.
 */
extern struct commit_list *get_saved_parents(struct rev_info *revs, const struct commit *commit);

#endif
Commit	Line	Data
ae563542 LT	1	#ifndef REVISION_H
	2	#define REVISION_H
	3
6b61ec05	4	#include "parse-options.h"
0843acfd	5	#include "grep.h"
894a9d33	6	#include "notes.h"
cf394719	7	#include "pretty.h"
19ecb564	8	#include "diff.h"
87be2523	9	#include "commit-slab-decl.h"
6b61ec05	10
208acbfb	11	/* Remember to update object flag allocation in object.h */
ae563542 LT	12	#define SEEN (1u<<0)
ae563542 LT	13	#define UNINTERESTING (1u<<1)
7dc0fe3b	14	#define TREESAME (1u<<2)
765ac8ec	15	#define SHOWN (1u<<3)
7ae0b0cb	16	#define TMP_MARK (1u<<4) /* for isolated cases; clean after use */
384e99a4	17	#define BOUNDARY (1u<<5)
2b064697	18	#define CHILD_SHOWN (1u<<6)
1b65a5aa	19	#define ADDED (1u<<7) /* Parents already parsed and added? */
577ed5c2	20	#define SYMMETRIC_LEFT (1u<<8)
adbbb31e	21	#define PATCHSAME (1u<<9)
7f34a46f	22	#define BOTTOM (1u<<10)
99c9aa95 MD	23	/*
	24	* Indicates object was reached by traversal. i.e. not given by user on
	25	* command-line or stdin.
	26	* NEEDSWORK: NOT_USER_GIVEN doesn't apply to commits because we only support
	27	* filtering trees and blobs, but it may be useful to support filtering commits
	28	* in the future.
	29	*/
	30	#define NOT_USER_GIVEN (1u<<25)
1b32dece	31	#define TRACK_LINEAR (1u<<26)
99c9aa95	32	#define ALL_REV_FLAGS (((1u<<11)-1) \| NOT_USER_GIVEN \| TRACK_LINEAR)
ae563542	33
33e7018c LH	34	#define DECORATE_SHORT_REFS 1
	35	#define DECORATE_FULL_REFS 2
	36
8efdc326	37	struct rev_info;
91539833	38	struct log_info;
894a9d33	39	struct string_list;
53d00b39	40	struct saved_parents;
87be2523	41	define_shared_commit_slab(revision_sources, char *);
8efdc326	42
281eee47 JH	43	struct rev_cmdline_info {
	44	unsigned int nr;
	45	unsigned int alloc;
	46	struct rev_cmdline_entry {
	47	struct object *item;
	48	const char *name;
	49	enum {
	50	REV_CMD_REF,
	51	REV_CMD_PARENTS_ONLY,
	52	REV_CMD_LEFT,
	53	REV_CMD_RIGHT,
a765499a	54	REV_CMD_MERGE_BASE,
281eee47 JH	55	REV_CMD_REV
	56	} whence;
	57	unsigned flags;
	58	} *rev;
	59	};
	60
ca92e59e MZ	61	#define REVISION_WALK_WALK 0
	62	#define REVISION_WALK_NO_WALK_SORTED 1
	63	#define REVISION_WALK_NO_WALK_UNSORTED 2
	64
ae563542 LT	65	struct rev_info {
	66	/* Starting list */
	67	struct commit_list *commits;
1f1e895f	68	struct object_array pending;
ae563542	69
86ab4906 JH	70	/* Parents of shown commits */
	71	struct object_array boundary_commits;
	72
281eee47 JH	73	/* The end-points specified by the end user */
	74	struct rev_cmdline_info cmdline;
	75
e7b432c5 JH	76	/* excluding from --branches, --refs, etc. expansion */
	77	struct string_list *ref_excludes;
	78
ae563542 LT	79	/* Basic information */
ae563542 LT	80	const char *prefix;
02e54220	81	const char *def;
afe069d1	82	struct pathspec prune_data;
08f704f2	83
7ba82629 JK	84	/*
	85	* Whether the arguments parsed by setup_revisions() included any
	86	* "input" revisions that might still have yielded an empty pending
	87	* list (e.g., patterns like "--all" or "--glob").
	88	*/
	89	int rev_input_given;
	90
08f704f2 JH	91	/* topo-sort */
	92	enum rev_sort_order sort_order;
	93
e35b6ac5 SG	94	unsigned int early_output;
	95
	96	unsigned int ignore_missing:1,
2db1a43f	97	ignore_missing_links:1;
cdcefbc9	98
ae563542 LT	99	/* Traversal flags */
ae563542 LT	100	unsigned int dense:1,
53b2c823	101	prune:1,
ca92e59e	102	no_walk:2,
ae563542	103	remove_empty_trees:1,
9202434c	104	simplify_history:1,
ae563542	105	topo_order:1,
6546b593	106	simplify_merges:1,
78892e32	107	simplify_by_decoration:1,
ff9445be	108	single_worktree:1,
ae563542 LT	109	tag_objects:1,
	110	tree_objects:1,
	111	blob_objects:1,
5a48d240	112	verify_objects:1,
d9a83684	113	edge_hint:1,
1684c1b2	114	edge_hint_aggressive:1,
d9a83684	115	limited:1,
03a9683d	116	unpacked:1,
86ab4906	117	boundary:2,
f69c5018	118	count:1,
74bd9029	119	left_right:1,
60adf7d7 MG	120	left_only:1,
60adf7d7 MG	121	right_only:1,
885cf808 AS	122	rewrite_parents:1,
885cf808 AS	123	print_parents:1,
d467a525	124	show_decorations:1,
0053e902	125	reverse:1,
498bcd31	126	reverse_output_stage:1,
d7a17cad	127	cherry_pick:1,
adbbb31e	128	cherry_mark:1,
ad3f9a71	129	bisect:1,
ebdc94f3	130	ancestry_path:1,
12da1d1f	131	first_parent_only:1,
ce5b6f9b	132	line_level_traverse:1,
f3d618d2	133	tree_blobs_in_commit_order:1,
df11e196	134
7c0fe330 MD	135	/*
	136	* Blobs are shown without regard for their existence.
	137	* But not so for trees: unless exclude_promisor_objects
	138	* is set and the tree in question is a promisor object;
	139	* OR ignore_missing_links is set, the revision walker
	140	* dies with a "bad tree object HASH" message when
	141	* encountering a missing tree. For callers that can
	142	* handle missing trees and want them to be filterable
	143	* and showable, set this to true. The revision walker
	144	* will filter and show such a missing tree as usual,
	145	* but will not attempt to recurse into this tree
	146	* object.
	147	*/
	148	do_not_die_on_missing_tree:1,
	149
df11e196 JT	150	/* for internal use only */
df11e196 JT	151	exclude_promisor_objects:1;
ae563542	152
cd2bdc53 LT	153	/* Diff flags */
	154	unsigned int diff:1,
	155	full_diff:1,
	156	show_root_diff:1,
	157	no_commit_id:1,
	158	verbose_header:1,
	159	ignore_merges:1,
	160	combine_merges:1,
	161	dense_combined_merges:1,
	162	always_show_header:1;
	163
	164	/* Format info */
91539833	165	unsigned int shown_one:1,
bd1470b8	166	shown_dashes:1,
02e54220	167	show_merge:1,
66b2ed09 JH	168	show_notes:1,
66b2ed09 JH	169	show_notes_given:1,
0c37f1fc	170	show_signature:1,
66b2ed09	171	pretty_given:1,
4da45bef	172	abbrev_commit:1,
0c47695a	173	abbrev_commit_given:1,
3a30aa17	174	zero_commit:1,
7fefda5c	175	use_terminator:1,
f4ea32f0	176	missing_newline:1,
9553d2b2 JK	177	date_mode_explicit:1,
9553d2b2 JK	178	preserve_subject:1;
8b3dce56	179	unsigned int disable_stdin:1;
1b32dece NTND	180	/* --show-linear-break */
	181	unsigned int track_linear:1,
	182	track_first_time:1,
	183	linear:1;
8b3dce56	184
a5481a6c	185	struct date_mode date_mode;
0893eec8 JH	186	int expand_tabs_in_log; /* unset if negative */
0893eec8 JH	187	int expand_tabs_in_log_default;
106d710b	188
cd2bdc53 LT	189	unsigned int abbrev;
cd2bdc53 LT	190	enum cmit_fmt commit_format;
91539833	191	struct log_info *loginfo;
596524b3	192	int nr, total;
698ce6f8	193	const char *mime_boundary;
108dab28 SB	194	const char *patch_suffix;
108dab28 SB	195	int numbered_files;
5fe10fe8	196	int reroll_count;
e1a37346	197	char *message_id;
a9080475	198	struct ident_split from_ident;
b079c50e	199	struct string_list *ref_message_ids;
5289c56a	200	int add_signoff;
20ff0680	201	const char *extra_headers;
52883fbd	202	const char *log_reencode;
2d9e4a47	203	const char *subject_prefix;
c112f689	204	int no_inline;
9fa3465d	205	int show_log_size;
0e2913b0	206	struct string_list *mailmap;
cd2bdc53	207
8ecae9b0	208	/* Filter by commit log message */
0843acfd	209	struct grep_opt grep_filter;
22dfa8a2 CJ	210	/* Negate the match of grep_filter */
22dfa8a2 CJ	211	int invert_grep;
8ecae9b0	212
7fefda5c AS	213	/* Display history graph */
	214	struct git_graph *graph;
	215
ae563542	216	/* special limits */
d5db6c9e	217	int skip_count;
ae563542	218	int max_count;
dddbad72 JS	219	timestamp_t max_age;
dddbad72 JS	220	timestamp_t min_age;
ad5aeede MG	221	int min_parents;
ad5aeede MG	222	int max_parents;
a330de31 VM	223	int (include_check)(struct commit , void *);
a330de31 VM	224	void *include_check_data;
8efdc326	225
cd2bdc53	226	/* diff info for patches and for paths limiting */
c4e05b1a	227	struct diff_options diffopt;
cd2bdc53	228	struct diff_options pruning;
c4e05b1a	229
8860fd42	230	struct reflog_walk_info *reflog_info;
f35f5603	231	struct decoration children;
faf0156b	232	struct decoration merge_simplification;
d0af663e	233	struct decoration treesame;
894a9d33 TR	234
	235	/* notes-specific options: which refs to show */
	236	struct display_notes_opt notes_opt;
f69c5018 TR	237
	238	/* commit counts */
	239	int count_left;
	240	int count_right;
b388e14b	241	int count_same;
12da1d1f TR	242
	243	/* line level range that we are chasing */
	244	struct decoration line_log_data;
53d00b39 TR	245
	246	/* copies of the parent lists, for --full-diff display */
	247	struct saved_parents *saved_parents_slab;
1b32dece NTND	248
	249	struct commit_list *previous_parents;
	250	const char *break_bar;
87be2523 NTND	251
87be2523 NTND	252	struct revision_sources *sources;
ae563542 LT	253	};
ae563542 LT	254
ff32d342 JH	255	extern int ref_excluded(struct string_list , const char path);
	256	void clear_ref_exclusion(struct string_list **);
	257	void add_ref_exclusion(struct string_list *, const char exclude);
	258
	259
8efdc326	260	#define REV_TREE_SAME 0
ceff8e7a LT	261	#define REV_TREE_NEW 1 /* Only new files */
	262	#define REV_TREE_OLD 2 /* Only files removed */
	263	#define REV_TREE_DIFFERENT 3 /* Mixed changes */
8efdc326	264
ae563542	265	/* revision.c */
cdcefbc9	266	typedef void (show_early_output_fn_t)(struct rev_info , struct commit_list *);
4dc1db0b	267	extern volatile show_early_output_fn_t show_early_output;
8efdc326	268
32962c9b JH	269	struct setup_revision_opt {
32962c9b JH	270	const char *def;
b4490059	271	void (tweak)(struct rev_info , struct setup_revision_opt *);
9ef6aeb0	272	const char *submodule;
6d5b93f2	273	int assume_dashdash;
d5f6b1d7	274	unsigned revarg_opt;
32962c9b JH	275	};
32962c9b JH	276
db6296a5	277	extern void init_revisions(struct rev_info revs, const char prefix);
ff5f5f26 MH	278	extern int setup_revisions(int argc, const char *argv, struct rev_info revs,
ff5f5f26 MH	279	struct setup_revision_opt *);
6b61ec05	280	extern void parse_revision_opt(struct rev_info revs, struct parse_opt_ctx_t ctx,
ff5f5f26 MH	281	const struct option *options,
ff5f5f26 MH	282	const char * const usagestr[]);
8e676e8b	283	#define REVARG_CANNOT_BE_FILENAME 01
d5f6b1d7	284	#define REVARG_COMMITTISH 02
ff5f5f26 MH	285	extern int handle_revision_arg(const char arg, struct rev_info revs,
ff5f5f26 MH	286	int flags, unsigned revarg_opt);
5d6f0935	287
bcc0a3ea	288	extern void reset_revision_walk(void);
cc0e6c5a	289	extern int prepare_revision_walk(struct rev_info *revs);
a4a88b2b	290	extern struct commit get_revision(struct rev_info revs);
ff5f5f26 MH	291	extern char get_revision_mark(const struct rev_info revs,
	292	const struct commit *commit);
	293	extern void put_revision_mark(const struct rev_info *revs,
	294	const struct commit *commit);
a4a88b2b	295
ae563542 LT	296	extern void mark_parents_uninteresting(struct commit *commit);
	297	extern void mark_tree_uninteresting(struct tree *tree);
	298
de1e67d0	299	extern void show_object_with_name(FILE , struct object , const char *);
91f17516	300
ff5f5f26 MH	301	extern void add_pending_object(struct rev_info *revs,
ff5f5f26 MH	302	struct object obj, const char name);
a58a1b01	303	extern void add_pending_oid(struct rev_info *revs,
	304	const char name, const struct object_id oid,
	305	unsigned int flags);
ae563542	306
3384a2df	307	extern void add_head_to_pending(struct rev_info *);
718ccc97	308	extern void add_reflogs_to_pending(struct rev_info *, unsigned int flags);
4fe10219	309	extern void add_index_objects_to_pending(struct rev_info *, unsigned int flags);
3384a2df	310
252a7c02 LT	311	enum commit_action {
	312	commit_ignore,
	313	commit_show,
	314	commit_error
	315	};
	316
ff5f5f26 MH	317	extern enum commit_action get_commit_action(struct rev_info *revs,
	318	struct commit *commit);
	319	extern enum commit_action simplify_commit(struct rev_info *revs,
	320	struct commit *commit);
252a7c02	321
c7edcae0 BY	322	enum rewrite_result {
	323	rewrite_one_ok,
	324	rewrite_one_noparents,
	325	rewrite_one_error
	326	};
	327
	328	typedef enum rewrite_result (rewrite_parent_fn_t)(struct rev_info revs, struct commit **pp);
	329
	330	extern int rewrite_parents(struct rev_info revs, struct commit commit,
	331	rewrite_parent_fn_t rewrite_parent);
53d00b39 TR	332
53d00b39 TR	333	/*
0131c490 JH	334	* The log machinery saves the original parent list so that
	335	* get_saved_parents() can later tell what the real parents of the
	336	* commits are, when commit->parents has been modified by history
	337	* simpification.
53d00b39 TR	338	*
	339	* get_saved_parents() will transparently return commit->parents if
	340	* history simplification is off.
	341	*/
53d00b39	342	extern struct commit_list get_saved_parents(struct rev_info revs, const struct commit *commit);
53d00b39	343
ae563542	344	#endif