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git/revision.c

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23 KiB
C
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#include "cache.h"
#include "tag.h"
#include "blob.h"
#include "tree.h"
#include "commit.h"
#include "diff.h"
#include "refs.h"
#include "revision.h"
static char *path_name(struct name_path *path, const char *name)
{
struct name_path *p;
char *n, *m;
int nlen = strlen(name);
int len = nlen + 1;
for (p = path; p; p = p->up) {
if (p->elem_len)
len += p->elem_len + 1;
}
n = xmalloc(len);
m = n + len - (nlen + 1);
strcpy(m, name);
for (p = path; p; p = p->up) {
if (p->elem_len) {
m -= p->elem_len + 1;
memcpy(m, p->elem, p->elem_len);
m[p->elem_len] = '/';
}
}
return n;
}
struct object_list **add_object(struct object *obj,
struct object_list **p,
struct name_path *path,
const char *name)
{
struct object_list *entry = xmalloc(sizeof(*entry));
entry->item = obj;
entry->next = *p;
entry->name = path_name(path, name);
*p = entry;
return &entry->next;
}
static void mark_blob_uninteresting(struct blob *blob)
{
if (blob->object.flags & UNINTERESTING)
return;
blob->object.flags |= UNINTERESTING;
}
void mark_tree_uninteresting(struct tree *tree)
{
struct object *obj = &tree->object;
struct tree_entry_list *entry;
if (obj->flags & UNINTERESTING)
return;
obj->flags |= UNINTERESTING;
if (!has_sha1_file(obj->sha1))
return;
if (parse_tree(tree) < 0)
die("bad tree %s", sha1_to_hex(obj->sha1));
entry = tree->entries;
tree->entries = NULL;
while (entry) {
struct tree_entry_list *next = entry->next;
if (entry->directory)
mark_tree_uninteresting(entry->item.tree);
else
mark_blob_uninteresting(entry->item.blob);
free(entry);
entry = next;
}
}
void mark_parents_uninteresting(struct commit *commit)
{
struct commit_list *parents = commit->parents;
while (parents) {
struct commit *commit = parents->item;
if (!(commit->object.flags & UNINTERESTING)) {
commit->object.flags |= UNINTERESTING;
/*
* Normally we haven't parsed the parent
* yet, so we won't have a parent of a parent
* here. However, it may turn out that we've
* reached this commit some other way (where it
* wasn't uninteresting), in which case we need
* to mark its parents recursively too..
*/
if (commit->parents)
mark_parents_uninteresting(commit);
}
/*
* A missing commit is ok iff its parent is marked
* uninteresting.
*
* We just mark such a thing parsed, so that when
* it is popped next time around, we won't be trying
* to parse it and get an error.
*/
if (!has_sha1_file(commit->object.sha1))
commit->object.parsed = 1;
parents = parents->next;
}
}
static void add_pending_object(struct rev_info *revs, struct object *obj, const char *name)
{
add_object(obj, &revs->pending_objects, NULL, name);
}
static struct object *get_reference(struct rev_info *revs, const char *name, const unsigned char *sha1, unsigned int flags)
{
struct object *object;
object = parse_object(sha1);
if (!object)
die("bad object %s", name);
object->flags |= flags;
return object;
}
static struct commit *handle_commit(struct rev_info *revs, struct object *object, const char *name)
{
unsigned long flags = object->flags;
/*
* Tag object? Look what it points to..
*/
while (object->type == tag_type) {
struct tag *tag = (struct tag *) object;
if (revs->tag_objects && !(flags & UNINTERESTING))
add_pending_object(revs, object, tag->tag);
object = parse_object(tag->tagged->sha1);
if (!object)
die("bad object %s", sha1_to_hex(tag->tagged->sha1));
}
/*
* Commit object? Just return it, we'll do all the complex
* reachability crud.
*/
if (object->type == commit_type) {
struct commit *commit = (struct commit *)object;
if (parse_commit(commit) < 0)
die("unable to parse commit %s", name);
if (flags & UNINTERESTING) {
commit->object.flags |= UNINTERESTING;
mark_parents_uninteresting(commit);
revs->limited = 1;
}
return commit;
}
/*
* Tree object? Either mark it uniniteresting, or add it
* to the list of objects to look at later..
*/
if (object->type == tree_type) {
struct tree *tree = (struct tree *)object;
if (!revs->tree_objects)
return NULL;
if (flags & UNINTERESTING) {
mark_tree_uninteresting(tree);
return NULL;
}
add_pending_object(revs, object, "");
return NULL;
}
/*
* Blob object? You know the drill by now..
*/
if (object->type == blob_type) {
struct blob *blob = (struct blob *)object;
if (!revs->blob_objects)
return NULL;
if (flags & UNINTERESTING) {
mark_blob_uninteresting(blob);
return NULL;
}
add_pending_object(revs, object, "");
return NULL;
}
die("%s is unknown object", name);
}
static int everybody_uninteresting(struct commit_list *orig)
{
struct commit_list *list = orig;
while (list) {
struct commit *commit = list->item;
list = list->next;
if (commit->object.flags & UNINTERESTING)
continue;
return 0;
}
return 1;
}
static int tree_difference = REV_TREE_SAME;
static void file_add_remove(struct diff_options *options,
int addremove, unsigned mode,
const unsigned char *sha1,
const char *base, const char *path)
{
int diff = REV_TREE_DIFFERENT;
/*
* Is it an add of a new file? It means that the old tree
* didn't have it at all, so we will turn "REV_TREE_SAME" ->
* "REV_TREE_NEW", but leave any "REV_TREE_DIFFERENT" alone
* (and if it already was "REV_TREE_NEW", we'll keep it
* "REV_TREE_NEW" of course).
*/
if (addremove == '+') {
diff = tree_difference;
if (diff != REV_TREE_SAME)
return;
diff = REV_TREE_NEW;
}
tree_difference = diff;
}
static void file_change(struct diff_options *options,
unsigned old_mode, unsigned new_mode,
const unsigned char *old_sha1,
const unsigned char *new_sha1,
const char *base, const char *path)
{
tree_difference = REV_TREE_DIFFERENT;
}
int rev_compare_tree(struct rev_info *revs, struct tree *t1, struct tree *t2)
{
if (!t1)
return REV_TREE_NEW;
if (!t2)
return REV_TREE_DIFFERENT;
tree_difference = REV_TREE_SAME;
if (diff_tree_sha1(t1->object.sha1, t2->object.sha1, "",
&revs->pruning) < 0)
return REV_TREE_DIFFERENT;
return tree_difference;
}
int rev_same_tree_as_empty(struct rev_info *revs, struct tree *t1)
{
int retval;
void *tree;
struct tree_desc empty, real;
if (!t1)
return 0;
tree = read_object_with_reference(t1->object.sha1, tree_type, &real.size, NULL);
if (!tree)
return 0;
real.buf = tree;
empty.buf = "";
empty.size = 0;
tree_difference = 0;
retval = diff_tree(&empty, &real, "", &revs->pruning);
free(tree);
return retval >= 0 && !tree_difference;
}
static void try_to_simplify_commit(struct rev_info *revs, struct commit *commit)
{
struct commit_list **pp, *parent;
int tree_changed = 0;
if (!commit->tree)
return;
if (!commit->parents) {
if (!rev_same_tree_as_empty(revs, commit->tree))
commit->object.flags |= TREECHANGE;
return;
}
pp = &commit->parents;
while ((parent = *pp) != NULL) {
struct commit *p = parent->item;
parse_commit(p);
switch (rev_compare_tree(revs, p->tree, commit->tree)) {
case REV_TREE_SAME:
if (p->object.flags & UNINTERESTING) {
/* Even if a merge with an uninteresting
* side branch brought the entire change
* we are interested in, we do not want
* to lose the other branches of this
* merge, so we just keep going.
*/
pp = &parent->next;
continue;
}
parent->next = NULL;
commit->parents = parent;
return;
case REV_TREE_NEW:
if (revs->remove_empty_trees &&
rev_same_tree_as_empty(revs, p->tree)) {
/* We are adding all the specified
* paths from this parent, so the
* history beyond this parent is not
* interesting. Remove its parents
* (they are grandparents for us).
* IOW, we pretend this parent is a
* "root" commit.
*/
parse_commit(p);
p->parents = NULL;
}
/* fallthrough */
case REV_TREE_DIFFERENT:
tree_changed = 1;
pp = &parent->next;
continue;
}
die("bad tree compare for commit %s", sha1_to_hex(commit->object.sha1));
}
if (tree_changed)
commit->object.flags |= TREECHANGE;
}
static void add_parents_to_list(struct rev_info *revs, struct commit *commit, struct commit_list **list)
{
struct commit_list *parent = commit->parents;
if (commit->object.flags & ADDED)
return;
commit->object.flags |= ADDED;
/*
* If the commit is uninteresting, don't try to
* prune parents - we want the maximal uninteresting
* set.
*
* Normally we haven't parsed the parent
* yet, so we won't have a parent of a parent
* here. However, it may turn out that we've
* reached this commit some other way (where it
* wasn't uninteresting), in which case we need
* to mark its parents recursively too..
*/
if (commit->object.flags & UNINTERESTING) {
while (parent) {
struct commit *p = parent->item;
parent = parent->next;
parse_commit(p);
p->object.flags |= UNINTERESTING;
if (p->parents)
mark_parents_uninteresting(p);
if (p->object.flags & SEEN)
continue;
p->object.flags |= SEEN;
insert_by_date(p, list);
}
return;
}
/*
* Ok, the commit wasn't uninteresting. Try to
* simplify the commit history and find the parent
* that has no differences in the path set if one exists.
*/
if (revs->prune_fn)
revs->prune_fn(revs, commit);
if (revs->no_walk)
return;
parent = commit->parents;
while (parent) {
struct commit *p = parent->item;
parent = parent->next;
parse_commit(p);
if (p->object.flags & SEEN)
continue;
p->object.flags |= SEEN;
insert_by_date(p, list);
}
}
static void limit_list(struct rev_info *revs)
{
struct commit_list *list = revs->commits;
struct commit_list *newlist = NULL;
struct commit_list **p = &newlist;
while (list) {
struct commit_list *entry = list;
struct commit *commit = list->item;
struct object *obj = &commit->object;
list = list->next;
free(entry);
if (revs->max_age != -1 && (commit->date < revs->max_age))
obj->flags |= UNINTERESTING;
if (revs->unpacked && has_sha1_pack(obj->sha1))
obj->flags |= UNINTERESTING;
add_parents_to_list(revs, commit, &list);
if (obj->flags & UNINTERESTING) {
mark_parents_uninteresting(commit);
if (everybody_uninteresting(list))
break;
continue;
}
if (revs->min_age != -1 && (commit->date > revs->min_age))
continue;
p = &commit_list_insert(commit, p)->next;
}
if (revs->boundary) {
/* mark the ones that are on the result list first */
for (list = newlist; list; list = list->next) {
struct commit *commit = list->item;
commit->object.flags |= TMP_MARK;
}
for (list = newlist; list; list = list->next) {
struct commit *commit = list->item;
struct object *obj = &commit->object;
struct commit_list *parent;
if (obj->flags & UNINTERESTING)
continue;
for (parent = commit->parents;
parent;
parent = parent->next) {
struct commit *pcommit = parent->item;
if (!(pcommit->object.flags & UNINTERESTING))
continue;
pcommit->object.flags |= BOUNDARY;
if (pcommit->object.flags & TMP_MARK)
continue;
pcommit->object.flags |= TMP_MARK;
p = &commit_list_insert(pcommit, p)->next;
}
}
for (list = newlist; list; list = list->next) {
struct commit *commit = list->item;
commit->object.flags &= ~TMP_MARK;
}
}
revs->commits = newlist;
}
static int all_flags;
static struct rev_info *all_revs;
static int handle_one_ref(const char *path, const unsigned char *sha1)
{
struct object *object = get_reference(all_revs, path, sha1, all_flags);
add_pending_object(all_revs, object, "");
return 0;
}
static void handle_all(struct rev_info *revs, unsigned flags)
{
all_revs = revs;
all_flags = flags;
for_each_ref(handle_one_ref);
}
static int add_parents_only(struct rev_info *revs, const char *arg, int flags)
{
unsigned char sha1[20];
struct object *it;
struct commit *commit;
struct commit_list *parents;
if (*arg == '^') {
flags ^= UNINTERESTING;
arg++;
}
if (get_sha1(arg, sha1))
return 0;
while (1) {
it = get_reference(revs, arg, sha1, 0);
if (strcmp(it->type, tag_type))
break;
memcpy(sha1, ((struct tag*)it)->tagged->sha1, 20);
}
if (strcmp(it->type, commit_type))
return 0;
commit = (struct commit *)it;
for (parents = commit->parents; parents; parents = parents->next) {
it = &parents->item->object;
it->flags |= flags;
add_pending_object(revs, it, arg);
}
return 1;
}
void init_revisions(struct rev_info *revs)
{
memset(revs, 0, sizeof(*revs));
revs->abbrev = DEFAULT_ABBREV;
revs->ignore_merges = 1;
revs->pruning.recursive = 1;
revs->pruning.add_remove = file_add_remove;
revs->pruning.change = file_change;
revs->lifo = 1;
revs->dense = 1;
revs->prefix = setup_git_directory();
revs->max_age = -1;
revs->min_age = -1;
revs->max_count = -1;
revs->prune_fn = NULL;
revs->prune_data = NULL;
revs->topo_setter = topo_sort_default_setter;
revs->topo_getter = topo_sort_default_getter;
revs->commit_format = CMIT_FMT_DEFAULT;
diff_setup(&revs->diffopt);
}
/*
* Parse revision information, filling in the "rev_info" structure,
* and removing the used arguments from the argument list.
*
* Returns the number of arguments left that weren't recognized
* (which are also moved to the head of the argument list)
*/
int setup_revisions(int argc, const char **argv, struct rev_info *revs, const char *def)
{
int i, flags, seen_dashdash;
const char **unrecognized = argv + 1;
int left = 1;
/* First, search for "--" */
seen_dashdash = 0;
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (strcmp(arg, "--"))
continue;
argv[i] = NULL;
argc = i;
revs->prune_data = get_pathspec(revs->prefix, argv + i + 1);
seen_dashdash = 1;
break;
}
flags = 0;
for (i = 1; i < argc; i++) {
struct object *object;
const char *arg = argv[i];
unsigned char sha1[20];
char *dotdot;
int local_flags;
if (*arg == '-') {
int opts;
if (!strncmp(arg, "--max-count=", 12)) {
revs->max_count = atoi(arg + 12);
continue;
}
/* accept -<digit>, like traditional "head" */
if ((*arg == '-') && isdigit(arg[1])) {
revs->max_count = atoi(arg + 1);
continue;
}
if (!strcmp(arg, "-n")) {
if (argc <= i + 1)
die("-n requires an argument");
revs->max_count = atoi(argv[++i]);
continue;
}
if (!strncmp(arg,"-n",2)) {
revs->max_count = atoi(arg + 2);
continue;
}
if (!strncmp(arg, "--max-age=", 10)) {
revs->max_age = atoi(arg + 10);
continue;
}
if (!strncmp(arg, "--since=", 8)) {
revs->max_age = approxidate(arg + 8);
continue;
}
if (!strncmp(arg, "--after=", 8)) {
revs->max_age = approxidate(arg + 8);
continue;
}
if (!strncmp(arg, "--min-age=", 10)) {
revs->min_age = atoi(arg + 10);
continue;
}
if (!strncmp(arg, "--before=", 9)) {
revs->min_age = approxidate(arg + 9);
continue;
}
if (!strncmp(arg, "--until=", 8)) {
revs->min_age = approxidate(arg + 8);
continue;
}
if (!strcmp(arg, "--all")) {
handle_all(revs, flags);
continue;
}
if (!strcmp(arg, "--not")) {
flags ^= UNINTERESTING;
continue;
}
if (!strcmp(arg, "--default")) {
if (++i >= argc)
die("bad --default argument");
def = argv[i];
continue;
}
if (!strcmp(arg, "--topo-order")) {
revs->topo_order = 1;
continue;
}
if (!strcmp(arg, "--date-order")) {
revs->lifo = 0;
revs->topo_order = 1;
continue;
}
if (!strcmp(arg, "--parents")) {
revs->parents = 1;
continue;
}
if (!strcmp(arg, "--dense")) {
revs->dense = 1;
continue;
}
if (!strcmp(arg, "--sparse")) {
revs->dense = 0;
continue;
}
if (!strcmp(arg, "--remove-empty")) {
revs->remove_empty_trees = 1;
continue;
}
if (!strcmp(arg, "--no-merges")) {
revs->no_merges = 1;
continue;
}
if (!strcmp(arg, "--boundary")) {
revs->boundary = 1;
continue;
}
if (!strcmp(arg, "--objects")) {
revs->tag_objects = 1;
revs->tree_objects = 1;
revs->blob_objects = 1;
continue;
}
if (!strcmp(arg, "--objects-edge")) {
revs->tag_objects = 1;
revs->tree_objects = 1;
revs->blob_objects = 1;
revs->edge_hint = 1;
continue;
}
if (!strcmp(arg, "--unpacked")) {
revs->unpacked = 1;
continue;
}
if (!strcmp(arg, "-r")) {
revs->diff = 1;
revs->diffopt.recursive = 1;
continue;
}
if (!strcmp(arg, "-t")) {
revs->diff = 1;
revs->diffopt.recursive = 1;
revs->diffopt.tree_in_recursive = 1;
continue;
}
if (!strcmp(arg, "-m")) {
revs->ignore_merges = 0;
continue;
}
if (!strcmp(arg, "-c")) {
revs->diff = 1;
revs->dense_combined_merges = 0;
revs->combine_merges = 1;
continue;
}
if (!strcmp(arg, "--cc")) {
revs->diff = 1;
revs->dense_combined_merges = 1;
revs->combine_merges = 1;
continue;
}
if (!strcmp(arg, "-v")) {
revs->verbose_header = 1;
continue;
}
if (!strncmp(arg, "--pretty", 8)) {
revs->verbose_header = 1;
revs->commit_format = get_commit_format(arg+8);
continue;
}
if (!strcmp(arg, "--root")) {
revs->show_root_diff = 1;
continue;
}
if (!strcmp(arg, "--no-commit-id")) {
revs->no_commit_id = 1;
continue;
}
if (!strcmp(arg, "--always")) {
revs->always_show_header = 1;
continue;
}
if (!strcmp(arg, "--no-abbrev")) {
revs->abbrev = 0;
continue;
}
if (!strcmp(arg, "--abbrev")) {
revs->abbrev = DEFAULT_ABBREV;
continue;
}
if (!strcmp(arg, "--abbrev-commit")) {
revs->abbrev_commit = 1;
continue;
}
if (!strcmp(arg, "--full-diff")) {
revs->diff = 1;
revs->full_diff = 1;
continue;
}
opts = diff_opt_parse(&revs->diffopt, argv+i, argc-i);
if (opts > 0) {
revs->diff = 1;
i += opts - 1;
continue;
}
*unrecognized++ = arg;
left++;
continue;
}
dotdot = strstr(arg, "..");
if (dotdot) {
unsigned char from_sha1[20];
const char *next = dotdot + 2;
const char *this = arg;
*dotdot = 0;
if (!*next)
next = "HEAD";
if (dotdot == arg)
this = "HEAD";
if (!get_sha1(this, from_sha1) &&
!get_sha1(next, sha1)) {
struct object *exclude;
struct object *include;
exclude = get_reference(revs, this, from_sha1, flags ^ UNINTERESTING);
include = get_reference(revs, next, sha1, flags);
if (!exclude || !include)
die("Invalid revision range %s..%s", arg, next);
if (!seen_dashdash) {
*dotdot = '.';
verify_non_filename(revs->prefix, arg);
}
add_pending_object(revs, exclude, this);
add_pending_object(revs, include, next);
continue;
}
*dotdot = '.';
}
dotdot = strstr(arg, "^@");
if (dotdot && !dotdot[2]) {
*dotdot = 0;
if (add_parents_only(revs, arg, flags))
continue;
*dotdot = '^';
}
local_flags = 0;
if (*arg == '^') {
local_flags = UNINTERESTING;
arg++;
}
if (get_sha1(arg, sha1) < 0) {
int j;
if (seen_dashdash || local_flags)
die("bad revision '%s'", arg);
/* If we didn't have a "--":
* (1) all filenames must exist;
* (2) all rev-args must not be interpretable
* as a valid filename.
* but the latter we have checked in the main loop.
*/
for (j = i; j < argc; j++)
verify_filename(revs->prefix, argv[j]);
revs->prune_data = get_pathspec(revs->prefix, argv + i);
break;
}
if (!seen_dashdash)
verify_non_filename(revs->prefix, arg);
object = get_reference(revs, arg, sha1, flags ^ local_flags);
add_pending_object(revs, object, arg);
}
if (def && !revs->pending_objects) {
unsigned char sha1[20];
struct object *object;
if (get_sha1(def, sha1) < 0)
die("bad default revision '%s'", def);
object = get_reference(revs, def, sha1, 0);
add_pending_object(revs, object, def);
}
if (revs->topo_order || revs->unpacked)
revs->limited = 1;
if (revs->prune_data) {
diff_tree_setup_paths(revs->prune_data, &revs->pruning);
revs->prune_fn = try_to_simplify_commit;
if (!revs->full_diff)
diff_tree_setup_paths(revs->prune_data, &revs->diffopt);
}
if (revs->combine_merges) {
revs->ignore_merges = 0;
if (revs->dense_combined_merges &&
(revs->diffopt.output_format != DIFF_FORMAT_DIFFSTAT))
revs->diffopt.output_format = DIFF_FORMAT_PATCH;
}
revs->diffopt.abbrev = revs->abbrev;
diff_setup_done(&revs->diffopt);
return left;
}
void prepare_revision_walk(struct rev_info *revs)
{
struct object_list *list;
list = revs->pending_objects;
revs->pending_objects = NULL;
while (list) {
struct commit *commit = handle_commit(revs, list->item, list->name);
if (commit) {
if (!(commit->object.flags & SEEN)) {
commit->object.flags |= SEEN;
insert_by_date(commit, &revs->commits);
}
}
list = list->next;
}
if (revs->no_walk)
return;
if (revs->limited)
limit_list(revs);
if (revs->topo_order)
sort_in_topological_order_fn(&revs->commits, revs->lifo,
revs->topo_setter,
revs->topo_getter);
}
static int rewrite_one(struct rev_info *revs, struct commit **pp)
{
for (;;) {
struct commit *p = *pp;
if (!revs->limited)
add_parents_to_list(revs, p, &revs->commits);
if (p->object.flags & (TREECHANGE | UNINTERESTING))
return 0;
if (!p->parents)
return -1;
*pp = p->parents->item;
}
}
static void rewrite_parents(struct rev_info *revs, struct commit *commit)
{
struct commit_list **pp = &commit->parents;
while (*pp) {
struct commit_list *parent = *pp;
if (rewrite_one(revs, &parent->item) < 0) {
*pp = parent->next;
continue;
}
pp = &parent->next;
}
}
static void mark_boundary_to_show(struct commit *commit)
{
struct commit_list *p = commit->parents;
while (p) {
commit = p->item;
p = p->next;
if (commit->object.flags & BOUNDARY)
commit->object.flags |= BOUNDARY_SHOW;
}
}
struct commit *get_revision(struct rev_info *revs)
{
struct commit_list *list = revs->commits;
if (!list)
return NULL;
/* Check the max_count ... */
switch (revs->max_count) {
case -1:
break;
case 0:
return NULL;
default:
revs->max_count--;
}
do {
struct commit *commit = revs->commits->item;
revs->commits = revs->commits->next;
/*
* If we haven't done the list limiting, we need to look at
* the parents here. We also need to do the date-based limiting
* that we'd otherwise have done in limit_list().
*/
if (!revs->limited) {
if ((revs->unpacked &&
has_sha1_pack(commit->object.sha1)) ||
(revs->max_age != -1 &&
(commit->date < revs->max_age)))
continue;
add_parents_to_list(revs, commit, &revs->commits);
}
if (commit->object.flags & SHOWN)
continue;
/* We want to show boundary commits only when their
* children are shown. When path-limiter is in effect,
* rewrite_parents() drops some commits from getting shown,
* and there is no point showing boundary parents that
* are not shown. After rewrite_parents() rewrites the
* parents of a commit that is shown, we mark the boundary
* parents with BOUNDARY_SHOW.
*/
if (commit->object.flags & BOUNDARY_SHOW) {
commit->object.flags |= SHOWN;
return commit;
}
if (commit->object.flags & UNINTERESTING)
continue;
if (revs->min_age != -1 && (commit->date > revs->min_age))
continue;
if (revs->no_merges &&
commit->parents && commit->parents->next)
continue;
if (revs->prune_fn && revs->dense) {
if (!(commit->object.flags & TREECHANGE))
continue;
if (revs->parents)
rewrite_parents(revs, commit);
}
if (revs->boundary)
mark_boundary_to_show(commit);
commit->object.flags |= SHOWN;
return commit;
} while (revs->commits);
return NULL;
}
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