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Merge branch 'jh/notes-merge'

* jh/notes-merge: (23 commits)
  Provide 'git merge --abort' as a synonym to 'git reset --merge'
  cmd_merge(): Parse options before checking MERGE_HEAD
  Provide 'git notes get-ref' to easily retrieve current notes ref
  git notes merge: Add testcases for merging notes trees at different fanouts
  git notes merge: Add another auto-resolving strategy: "cat_sort_uniq"
  git notes merge: --commit should fail if underlying notes ref has moved
  git notes merge: List conflicting notes in notes merge commit message
  git notes merge: Manual conflict resolution, part 2/2
  git notes merge: Manual conflict resolution, part 1/2
  Documentation: Preliminary docs on 'git notes merge'
  git notes merge: Add automatic conflict resolvers (ours, theirs, union)
  git notes merge: Handle real, non-conflicting notes merges
  builtin/notes.c: Refactor creation of notes commits.
  git notes merge: Initial implementation handling trivial merges only
  builtin/notes.c: Split notes ref DWIMmery into a separate function
  notes.c: Use two newlines (instead of one) when concatenating notes
  (trivial) t3303: Indent with tabs instead of spaces for consistency
  notes.h/c: Propagate combine_notes_fn return value to add_note() and beyond
  notes.h/c: Allow combine_notes functions to remove notes
  notes.c: Reorder functions in preparation for next commit
  ...

Conflicts:
	builtin.h
This commit is contained in:
Junio C Hamano 2010-12-08 11:24:12 -08:00
commit 657072f3ac
20 changed files with 3794 additions and 162 deletions

View File

@ -13,6 +13,7 @@ SYNOPSIS
[-s <strategy>] [-X <strategy-option>]
[--[no-]rerere-autoupdate] [-m <msg>] <commit>...
'git merge' <msg> HEAD <commit>...
'git merge' --abort
DESCRIPTION
-----------
@ -47,6 +48,14 @@ The second syntax (<msg> `HEAD` <commit>...) is supported for
historical reasons. Do not use it from the command line or in
new scripts. It is the same as `git merge -m <msg> <commit>...`.
The third syntax ("`git merge --abort`") can only be run after the
merge has resulted in conflicts. 'git merge --abort' will abort the
merge process and try to reconstruct the pre-merge state. However,
if there were uncommitted changes when the merge started (and
especially if those changes were further modified after the merge
was started), 'git merge --abort' will in some cases be unable to
reconstruct the original (pre-merge) changes. Therefore:
*Warning*: Running 'git merge' with uncommitted changes is
discouraged: while possible, it leaves you in a state that is hard to
back out of in the case of a conflict.
@ -72,6 +81,18 @@ invocations.
Allow the rerere mechanism to update the index with the
result of auto-conflict resolution if possible.
--abort::
Abort the current conflict resolution process, and
try to reconstruct the pre-merge state.
+
If there were uncommitted worktree changes present when the merge
started, 'git merge --abort' will in some cases be unable to
reconstruct these changes. It is therefore recommended to always
commit or stash your changes before running 'git merge'.
+
'git merge --abort' is equivalent to 'git reset --merge' when
`MERGE_HEAD` is present.
<commit>...::
Commits, usually other branch heads, to merge into our branch.
You need at least one <commit>. Specifying more than one
@ -142,7 +163,7 @@ happens:
i.e. matching `HEAD`.
If you tried a merge which resulted in complex conflicts and
want to start over, you can recover with `git reset --merge`.
want to start over, you can recover with `git merge --abort`.
HOW CONFLICTS ARE PRESENTED
---------------------------
@ -213,8 +234,8 @@ After seeing a conflict, you can do two things:
* Decide not to merge. The only clean-ups you need are to reset
the index file to the `HEAD` commit to reverse 2. and to clean
up working tree changes made by 2. and 3.; `git-reset --hard` can
be used for this.
up working tree changes made by 2. and 3.; `git merge --abort`
can be used for this.
* Resolve the conflicts. Git will mark the conflicts in
the working tree. Edit the files into shape and

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@ -14,8 +14,12 @@ SYNOPSIS
'git notes' append [-F <file> | -m <msg> | (-c | -C) <object>] [<object>]
'git notes' edit [<object>]
'git notes' show [<object>]
'git notes' merge [-v | -q] [-s <strategy> ] <notes_ref>
'git notes' merge --commit [-v | -q]
'git notes' merge --abort [-v | -q]
'git notes' remove [<object>]
'git notes' prune [-n | -v]
'git notes' get-ref
DESCRIPTION
@ -83,6 +87,21 @@ edit::
show::
Show the notes for a given object (defaults to HEAD).
merge::
Merge the given notes ref into the current notes ref.
This will try to merge the changes made by the given
notes ref (called "remote") since the merge-base (if
any) into the current notes ref (called "local").
+
If conflicts arise and a strategy for automatically resolving
conflicting notes (see the -s/--strategy option) is not given,
the "manual" resolver is used. This resolver checks out the
conflicting notes in a special worktree (`.git/NOTES_MERGE_WORKTREE`),
and instructs the user to manually resolve the conflicts there.
When done, the user can either finalize the merge with
'git notes merge --commit', or abort the merge with
'git notes merge --abort'.
remove::
Remove the notes for a given object (defaults to HEAD).
This is equivalent to specifying an empty note message to
@ -91,6 +110,10 @@ remove::
prune::
Remove all notes for non-existing/unreachable objects.
get-ref::
Print the current notes ref. This provides an easy way to
retrieve the current notes ref (e.g. from scripts).
OPTIONS
-------
-f::
@ -133,9 +156,37 @@ OPTIONS
Do not remove anything; just report the object names whose notes
would be removed.
-s <strategy>::
--strategy=<strategy>::
When merging notes, resolve notes conflicts using the given
strategy. The following strategies are recognized: "manual"
(default), "ours", "theirs", "union" and "cat_sort_uniq".
See the "NOTES MERGE STRATEGIES" section below for more
information on each notes merge strategy.
--commit::
Finalize an in-progress 'git notes merge'. Use this option
when you have resolved the conflicts that 'git notes merge'
stored in .git/NOTES_MERGE_WORKTREE. This amends the partial
merge commit created by 'git notes merge' (stored in
.git/NOTES_MERGE_PARTIAL) by adding the notes in
.git/NOTES_MERGE_WORKTREE. The notes ref stored in the
.git/NOTES_MERGE_REF symref is updated to the resulting commit.
--abort::
Abort/reset a in-progress 'git notes merge', i.e. a notes merge
with conflicts. This simply removes all files related to the
notes merge.
-q::
--quiet::
When merging notes, operate quietly.
-v::
--verbose::
Report all object names whose notes are removed.
When merging notes, be more verbose.
When pruning notes, report all object names whose notes are
removed.
DISCUSSION
@ -163,6 +214,38 @@ object, in which case the history of the notes can be read with
`git log -p -g <refname>`.
NOTES MERGE STRATEGIES
----------------------
The default notes merge strategy is "manual", which checks out
conflicting notes in a special work tree for resolving notes conflicts
(`.git/NOTES_MERGE_WORKTREE`), and instructs the user to resolve the
conflicts in that work tree.
When done, the user can either finalize the merge with
'git notes merge --commit', or abort the merge with
'git notes merge --abort'.
"ours" automatically resolves conflicting notes in favor of the local
version (i.e. the current notes ref).
"theirs" automatically resolves notes conflicts in favor of the remote
version (i.e. the given notes ref being merged into the current notes
ref).
"union" automatically resolves notes conflicts by concatenating the
local and remote versions.
"cat_sort_uniq" is similar to "union", but in addition to concatenating
the local and remote versions, this strategy also sorts the resulting
lines, and removes duplicate lines from the result. This is equivalent
to applying the "cat | sort | uniq" shell pipeline to the local and
remote versions. This strategy is useful if the notes follow a line-based
format where one wants to avoid duplicated lines in the merge result.
Note that if either the local or remote version contain duplicate lines
prior to the merge, these will also be removed by this notes merge
strategy.
EXAMPLES
--------

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@ -525,6 +525,7 @@ LIB_H += mailmap.h
LIB_H += merge-recursive.h
LIB_H += notes.h
LIB_H += notes-cache.h
LIB_H += notes-merge.h
LIB_H += object.h
LIB_H += pack.h
LIB_H += pack-refs.h
@ -615,6 +616,7 @@ LIB_OBJS += merge-recursive.o
LIB_OBJS += name-hash.o
LIB_OBJS += notes.o
LIB_OBJS += notes-cache.o
LIB_OBJS += notes-merge.o
LIB_OBJS += object.o
LIB_OBJS += pack-check.o
LIB_OBJS += pack-refs.o

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@ -16,7 +16,7 @@ extern const char git_more_info_string[];
extern void prune_packed_objects(int);
extern int fmt_merge_msg(struct strbuf *in, struct strbuf *out,
int merge_title, int shortlog_len);
extern int commit_notes(struct notes_tree *t, const char *msg);
extern void commit_notes(struct notes_tree *t, const char *msg);
struct notes_rewrite_cfg {
struct notes_tree **trees;

View File

@ -57,6 +57,7 @@ static const char *branch;
static int option_renormalize;
static int verbosity;
static int allow_rerere_auto;
static int abort_current_merge;
static struct strategy all_strategy[] = {
{ "recursive", DEFAULT_TWOHEAD | NO_TRIVIAL },
@ -197,6 +198,8 @@ static struct option builtin_merge_options[] = {
"message to be used for the merge commit (if any)",
option_parse_message),
OPT__VERBOSITY(&verbosity),
OPT_BOOLEAN(0, "abort", &abort_current_merge,
"abort the current in-progress merge"),
OPT_END()
};
@ -919,22 +922,6 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
const char *best_strategy = NULL, *wt_strategy = NULL;
struct commit_list **remotes = &remoteheads;
if (read_cache_unmerged()) {
die_resolve_conflict("merge");
}
if (file_exists(git_path("MERGE_HEAD"))) {
/*
* There is no unmerged entry, don't advise 'git
* add/rm <file>', just 'git commit'.
*/
if (advice_resolve_conflict)
die("You have not concluded your merge (MERGE_HEAD exists).\n"
"Please, commit your changes before you can merge.");
else
die("You have not concluded your merge (MERGE_HEAD exists).");
}
resolve_undo_clear();
/*
* Check if we are _not_ on a detached HEAD, i.e. if there is a
* current branch.
@ -953,6 +940,34 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
argc = parse_options(argc, argv, prefix, builtin_merge_options,
builtin_merge_usage, 0);
if (abort_current_merge) {
int nargc = 2;
const char *nargv[] = {"reset", "--merge", NULL};
if (!file_exists(git_path("MERGE_HEAD")))
die("There is no merge to abort (MERGE_HEAD missing).");
/* Invoke 'git reset --merge' */
return cmd_reset(nargc, nargv, prefix);
}
if (read_cache_unmerged())
die_resolve_conflict("merge");
if (file_exists(git_path("MERGE_HEAD"))) {
/*
* There is no unmerged entry, don't advise 'git
* add/rm <file>', just 'git commit'.
*/
if (advice_resolve_conflict)
die("You have not concluded your merge (MERGE_HEAD exists).\n"
"Please, commit your changes before you can merge.");
else
die("You have not concluded your merge (MERGE_HEAD exists).");
}
resolve_undo_clear();
if (verbosity < 0)
show_diffstat = 0;

View File

@ -17,6 +17,7 @@
#include "run-command.h"
#include "parse-options.h"
#include "string-list.h"
#include "notes-merge.h"
static const char * const git_notes_usage[] = {
"git notes [--ref <notes_ref>] [list [<object>]]",
@ -25,8 +26,12 @@ static const char * const git_notes_usage[] = {
"git notes [--ref <notes_ref>] append [-m <msg> | -F <file> | (-c | -C) <object>] [<object>]",
"git notes [--ref <notes_ref>] edit [<object>]",
"git notes [--ref <notes_ref>] show [<object>]",
"git notes [--ref <notes_ref>] merge [-v | -q] [-s <strategy> ] <notes_ref>",
"git notes merge --commit [-v | -q]",
"git notes merge --abort [-v | -q]",
"git notes [--ref <notes_ref>] remove [<object>]",
"git notes [--ref <notes_ref>] prune [-n | -v]",
"git notes [--ref <notes_ref>] get-ref",
NULL
};
@ -61,6 +66,13 @@ static const char * const git_notes_show_usage[] = {
NULL
};
static const char * const git_notes_merge_usage[] = {
"git notes merge [<options>] <notes_ref>",
"git notes merge --commit [<options>]",
"git notes merge --abort [<options>]",
NULL
};
static const char * const git_notes_remove_usage[] = {
"git notes remove [<object>]",
NULL
@ -71,6 +83,11 @@ static const char * const git_notes_prune_usage[] = {
NULL
};
static const char * const git_notes_get_ref_usage[] = {
"git notes get-ref",
NULL
};
static const char note_template[] =
"\n"
"#\n"
@ -83,6 +100,16 @@ struct msg_arg {
struct strbuf buf;
};
static void expand_notes_ref(struct strbuf *sb)
{
if (!prefixcmp(sb->buf, "refs/notes/"))
return; /* we're happy */
else if (!prefixcmp(sb->buf, "notes/"))
strbuf_insert(sb, 0, "refs/", 5);
else
strbuf_insert(sb, 0, "refs/notes/", 11);
}
static int list_each_note(const unsigned char *object_sha1,
const unsigned char *note_sha1, char *note_path,
void *cb_data)
@ -271,18 +298,17 @@ static int parse_reedit_arg(const struct option *opt, const char *arg, int unset
return parse_reuse_arg(opt, arg, unset);
}
int commit_notes(struct notes_tree *t, const char *msg)
void commit_notes(struct notes_tree *t, const char *msg)
{
struct commit_list *parent;
unsigned char tree_sha1[20], prev_commit[20], new_commit[20];
struct strbuf buf = STRBUF_INIT;
unsigned char commit_sha1[20];
if (!t)
t = &default_notes_tree;
if (!t->initialized || !t->ref || !*t->ref)
die("Cannot commit uninitialized/unreferenced notes tree");
if (!t->dirty)
return 0; /* don't have to commit an unchanged tree */
return; /* don't have to commit an unchanged tree */
/* Prepare commit message and reflog message */
strbuf_addstr(&buf, "notes: "); /* commit message starts at index 7 */
@ -290,27 +316,10 @@ int commit_notes(struct notes_tree *t, const char *msg)
if (buf.buf[buf.len - 1] != '\n')
strbuf_addch(&buf, '\n'); /* Make sure msg ends with newline */
/* Convert notes tree to tree object */
if (write_notes_tree(t, tree_sha1))
die("Failed to write current notes tree to database");
/* Create new commit for the tree object */
if (!read_ref(t->ref, prev_commit)) { /* retrieve parent commit */
parent = xmalloc(sizeof(*parent));
parent->item = lookup_commit(prev_commit);
parent->next = NULL;
} else {
hashclr(prev_commit);
parent = NULL;
}
if (commit_tree(buf.buf + 7, tree_sha1, parent, new_commit, NULL))
die("Failed to commit notes tree to database");
/* Update notes ref with new commit */
update_ref(buf.buf, t->ref, new_commit, prev_commit, 0, DIE_ON_ERR);
create_notes_commit(t, NULL, buf.buf + 7, commit_sha1);
update_ref(buf.buf, t->ref, commit_sha1, NULL, 0, DIE_ON_ERR);
strbuf_release(&buf);
return 0;
}
combine_notes_fn parse_combine_notes_fn(const char *v)
@ -321,6 +330,8 @@ combine_notes_fn parse_combine_notes_fn(const char *v)
return combine_notes_ignore;
else if (!strcasecmp(v, "concatenate"))
return combine_notes_concatenate;
else if (!strcasecmp(v, "cat_sort_uniq"))
return combine_notes_cat_sort_uniq;
else
return NULL;
}
@ -573,8 +584,8 @@ static int add(int argc, const char **argv, const char *prefix)
if (is_null_sha1(new_note))
remove_note(t, object);
else
add_note(t, object, new_note, combine_notes_overwrite);
else if (add_note(t, object, new_note, combine_notes_overwrite))
die("BUG: combine_notes_overwrite failed");
snprintf(logmsg, sizeof(logmsg), "Notes %s by 'git notes %s'",
is_null_sha1(new_note) ? "removed" : "added", "add");
@ -653,7 +664,8 @@ static int copy(int argc, const char **argv, const char *prefix)
goto out;
}
add_note(t, object, from_note, combine_notes_overwrite);
if (add_note(t, object, from_note, combine_notes_overwrite))
die("BUG: combine_notes_overwrite failed");
commit_notes(t, "Notes added by 'git notes copy'");
out:
free_notes(t);
@ -712,8 +724,8 @@ static int append_edit(int argc, const char **argv, const char *prefix)
if (is_null_sha1(new_note))
remove_note(t, object);
else
add_note(t, object, new_note, combine_notes_overwrite);
else if (add_note(t, object, new_note, combine_notes_overwrite))
die("BUG: combine_notes_overwrite failed");
snprintf(logmsg, sizeof(logmsg), "Notes %s by 'git notes %s'",
is_null_sha1(new_note) ? "removed" : "added", argv[0]);
@ -761,6 +773,180 @@ static int show(int argc, const char **argv, const char *prefix)
return retval;
}
static int merge_abort(struct notes_merge_options *o)
{
int ret = 0;
/*
* Remove .git/NOTES_MERGE_PARTIAL and .git/NOTES_MERGE_REF, and call
* notes_merge_abort() to remove .git/NOTES_MERGE_WORKTREE.
*/
if (delete_ref("NOTES_MERGE_PARTIAL", NULL, 0))
ret += error("Failed to delete ref NOTES_MERGE_PARTIAL");
if (delete_ref("NOTES_MERGE_REF", NULL, REF_NODEREF))
ret += error("Failed to delete ref NOTES_MERGE_REF");
if (notes_merge_abort(o))
ret += error("Failed to remove 'git notes merge' worktree");
return ret;
}
static int merge_commit(struct notes_merge_options *o)
{
struct strbuf msg = STRBUF_INIT;
unsigned char sha1[20], parent_sha1[20];
struct notes_tree *t;
struct commit *partial;
struct pretty_print_context pretty_ctx;
/*
* Read partial merge result from .git/NOTES_MERGE_PARTIAL,
* and target notes ref from .git/NOTES_MERGE_REF.
*/
if (get_sha1("NOTES_MERGE_PARTIAL", sha1))
die("Failed to read ref NOTES_MERGE_PARTIAL");
else if (!(partial = lookup_commit_reference(sha1)))
die("Could not find commit from NOTES_MERGE_PARTIAL.");
else if (parse_commit(partial))
die("Could not parse commit from NOTES_MERGE_PARTIAL.");
if (partial->parents)
hashcpy(parent_sha1, partial->parents->item->object.sha1);
else
hashclr(parent_sha1);
t = xcalloc(1, sizeof(struct notes_tree));
init_notes(t, "NOTES_MERGE_PARTIAL", combine_notes_overwrite, 0);
o->local_ref = resolve_ref("NOTES_MERGE_REF", sha1, 0, 0);
if (!o->local_ref)
die("Failed to resolve NOTES_MERGE_REF");
if (notes_merge_commit(o, t, partial, sha1))
die("Failed to finalize notes merge");
/* Reuse existing commit message in reflog message */
memset(&pretty_ctx, 0, sizeof(pretty_ctx));
format_commit_message(partial, "%s", &msg, &pretty_ctx);
strbuf_trim(&msg);
strbuf_insert(&msg, 0, "notes: ", 7);
update_ref(msg.buf, o->local_ref, sha1,
is_null_sha1(parent_sha1) ? NULL : parent_sha1,
0, DIE_ON_ERR);
free_notes(t);
strbuf_release(&msg);
return merge_abort(o);
}
static int merge(int argc, const char **argv, const char *prefix)
{
struct strbuf remote_ref = STRBUF_INIT, msg = STRBUF_INIT;
unsigned char result_sha1[20];
struct notes_tree *t;
struct notes_merge_options o;
int do_merge = 0, do_commit = 0, do_abort = 0;
int verbosity = 0, result;
const char *strategy = NULL;
struct option options[] = {
OPT_GROUP("General options"),
OPT__VERBOSITY(&verbosity),
OPT_GROUP("Merge options"),
OPT_STRING('s', "strategy", &strategy, "strategy",
"resolve notes conflicts using the given strategy "
"(manual/ours/theirs/union/cat_sort_uniq)"),
OPT_GROUP("Committing unmerged notes"),
{ OPTION_BOOLEAN, 0, "commit", &do_commit, NULL,
"finalize notes merge by committing unmerged notes",
PARSE_OPT_NOARG | PARSE_OPT_NONEG },
OPT_GROUP("Aborting notes merge resolution"),
{ OPTION_BOOLEAN, 0, "abort", &do_abort, NULL,
"abort notes merge",
PARSE_OPT_NOARG | PARSE_OPT_NONEG },
OPT_END()
};
argc = parse_options(argc, argv, prefix, options,
git_notes_merge_usage, 0);
if (strategy || do_commit + do_abort == 0)
do_merge = 1;
if (do_merge + do_commit + do_abort != 1) {
error("cannot mix --commit, --abort or -s/--strategy");
usage_with_options(git_notes_merge_usage, options);
}
if (do_merge && argc != 1) {
error("Must specify a notes ref to merge");
usage_with_options(git_notes_merge_usage, options);
} else if (!do_merge && argc) {
error("too many parameters");
usage_with_options(git_notes_merge_usage, options);
}
init_notes_merge_options(&o);
o.verbosity = verbosity + NOTES_MERGE_VERBOSITY_DEFAULT;
if (do_abort)
return merge_abort(&o);
if (do_commit)
return merge_commit(&o);
o.local_ref = default_notes_ref();
strbuf_addstr(&remote_ref, argv[0]);
expand_notes_ref(&remote_ref);
o.remote_ref = remote_ref.buf;
if (strategy) {
if (!strcmp(strategy, "manual"))
o.strategy = NOTES_MERGE_RESOLVE_MANUAL;
else if (!strcmp(strategy, "ours"))
o.strategy = NOTES_MERGE_RESOLVE_OURS;
else if (!strcmp(strategy, "theirs"))
o.strategy = NOTES_MERGE_RESOLVE_THEIRS;
else if (!strcmp(strategy, "union"))
o.strategy = NOTES_MERGE_RESOLVE_UNION;
else if (!strcmp(strategy, "cat_sort_uniq"))
o.strategy = NOTES_MERGE_RESOLVE_CAT_SORT_UNIQ;
else {
error("Unknown -s/--strategy: %s", strategy);
usage_with_options(git_notes_merge_usage, options);
}
}
t = init_notes_check("merge");
strbuf_addf(&msg, "notes: Merged notes from %s into %s",
remote_ref.buf, default_notes_ref());
strbuf_add(&(o.commit_msg), msg.buf + 7, msg.len - 7); /* skip "notes: " */
result = notes_merge(&o, t, result_sha1);
if (result >= 0) /* Merge resulted (trivially) in result_sha1 */
/* Update default notes ref with new commit */
update_ref(msg.buf, default_notes_ref(), result_sha1, NULL,
0, DIE_ON_ERR);
else { /* Merge has unresolved conflicts */
/* Update .git/NOTES_MERGE_PARTIAL with partial merge result */
update_ref(msg.buf, "NOTES_MERGE_PARTIAL", result_sha1, NULL,
0, DIE_ON_ERR);
/* Store ref-to-be-updated into .git/NOTES_MERGE_REF */
if (create_symref("NOTES_MERGE_REF", default_notes_ref(), NULL))
die("Failed to store link to current notes ref (%s)",
default_notes_ref());
printf("Automatic notes merge failed. Fix conflicts in %s and "
"commit the result with 'git notes merge --commit', or "
"abort the merge with 'git notes merge --abort'.\n",
git_path(NOTES_MERGE_WORKTREE));
}
free_notes(t);
strbuf_release(&remote_ref);
strbuf_release(&msg);
return result < 0; /* return non-zero on conflicts */
}
static int remove_cmd(int argc, const char **argv, const char *prefix)
{
struct option options[] = {
@ -827,6 +1013,21 @@ static int prune(int argc, const char **argv, const char *prefix)
return 0;
}
static int get_ref(int argc, const char **argv, const char *prefix)
{
struct option options[] = { OPT_END() };
argc = parse_options(argc, argv, prefix, options,
git_notes_get_ref_usage, 0);
if (argc) {
error("too many parameters");
usage_with_options(git_notes_get_ref_usage, options);
}
puts(default_notes_ref());
return 0;
}
int cmd_notes(int argc, const char **argv, const char *prefix)
{
int result;
@ -843,13 +1044,8 @@ int cmd_notes(int argc, const char **argv, const char *prefix)
if (override_notes_ref) {
struct strbuf sb = STRBUF_INIT;
if (!prefixcmp(override_notes_ref, "refs/notes/"))
/* we're happy */;
else if (!prefixcmp(override_notes_ref, "notes/"))
strbuf_addstr(&sb, "refs/");
else
strbuf_addstr(&sb, "refs/notes/");
strbuf_addstr(&sb, override_notes_ref);
expand_notes_ref(&sb);
setenv("GIT_NOTES_REF", sb.buf, 1);
strbuf_release(&sb);
}
@ -864,10 +1060,14 @@ int cmd_notes(int argc, const char **argv, const char *prefix)
result = append_edit(argc, argv, prefix);
else if (!strcmp(argv[0], "show"))
result = show(argc, argv, prefix);
else if (!strcmp(argv[0], "merge"))
result = merge(argc, argv, prefix);
else if (!strcmp(argv[0], "remove"))
result = remove_cmd(argc, argv, prefix);
else if (!strcmp(argv[0], "prune"))
result = prune(argc, argv, prefix);
else if (!strcmp(argv[0], "get-ref"))
result = get_ref(argc, argv, prefix);
else {
result = error("Unknown subcommand: %s", argv[0]);
usage_with_options(git_notes_usage, options);

View File

@ -89,6 +89,5 @@ int notes_cache_put(struct notes_cache *c, unsigned char key_sha1[20],
if (write_sha1_file(data, size, "blob", value_sha1) < 0)
return -1;
add_note(&c->tree, key_sha1, value_sha1, NULL);
return 0;
return add_note(&c->tree, key_sha1, value_sha1, NULL);
}

737
notes-merge.c Normal file
View File

@ -0,0 +1,737 @@
#include "cache.h"
#include "commit.h"
#include "refs.h"
#include "diff.h"
#include "diffcore.h"
#include "xdiff-interface.h"
#include "ll-merge.h"
#include "dir.h"
#include "notes.h"
#include "notes-merge.h"
#include "strbuf.h"
struct notes_merge_pair {
unsigned char obj[20], base[20], local[20], remote[20];
};
void init_notes_merge_options(struct notes_merge_options *o)
{
memset(o, 0, sizeof(struct notes_merge_options));
strbuf_init(&(o->commit_msg), 0);
o->verbosity = NOTES_MERGE_VERBOSITY_DEFAULT;
}
#define OUTPUT(o, v, ...) \
do { \
if ((o)->verbosity >= (v)) { \
printf(__VA_ARGS__); \
puts(""); \
} \
} while (0)
static int path_to_sha1(const char *path, unsigned char *sha1)
{
char hex_sha1[40];
int i = 0;
while (*path && i < 40) {
if (*path != '/')
hex_sha1[i++] = *path;
path++;
}
if (*path || i != 40)
return -1;
return get_sha1_hex(hex_sha1, sha1);
}
static int verify_notes_filepair(struct diff_filepair *p, unsigned char *sha1)
{
switch (p->status) {
case DIFF_STATUS_MODIFIED:
assert(p->one->mode == p->two->mode);
assert(!is_null_sha1(p->one->sha1));
assert(!is_null_sha1(p->two->sha1));
break;
case DIFF_STATUS_ADDED:
assert(is_null_sha1(p->one->sha1));
break;
case DIFF_STATUS_DELETED:
assert(is_null_sha1(p->two->sha1));
break;
default:
return -1;
}
assert(!strcmp(p->one->path, p->two->path));
return path_to_sha1(p->one->path, sha1);
}
static struct notes_merge_pair *find_notes_merge_pair_pos(
struct notes_merge_pair *list, int len, unsigned char *obj,
int insert_new, int *occupied)
{
/*
* Both diff_tree_remote() and diff_tree_local() tend to process
* merge_pairs in ascending order. Therefore, cache last returned
* index, and search sequentially from there until the appropriate
* position is found.
*
* Since inserts only happen from diff_tree_remote() (which mainly
* _appends_), we don't care that inserting into the middle of the
* list is expensive (using memmove()).
*/
static int last_index;
int i = last_index < len ? last_index : len - 1;
int prev_cmp = 0, cmp = -1;
while (i >= 0 && i < len) {
cmp = hashcmp(obj, list[i].obj);
if (!cmp) /* obj belongs @ i */
break;
else if (cmp < 0 && prev_cmp <= 0) /* obj belongs < i */
i--;
else if (cmp < 0) /* obj belongs between i-1 and i */
break;
else if (cmp > 0 && prev_cmp >= 0) /* obj belongs > i */
i++;
else /* if (cmp > 0) */ { /* obj belongs between i and i+1 */
i++;
break;
}
prev_cmp = cmp;
}
if (i < 0)
i = 0;
/* obj belongs at, or immediately preceding, index i (0 <= i <= len) */
if (!cmp)
*occupied = 1;
else {
*occupied = 0;
if (insert_new && i < len) {
memmove(list + i + 1, list + i,
(len - i) * sizeof(struct notes_merge_pair));
memset(list + i, 0, sizeof(struct notes_merge_pair));
}
}
last_index = i;
return list + i;
}
static unsigned char uninitialized[20] =
"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff" \
"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff";
static struct notes_merge_pair *diff_tree_remote(struct notes_merge_options *o,
const unsigned char *base,
const unsigned char *remote,
int *num_changes)
{
struct diff_options opt;
struct notes_merge_pair *changes;
int i, len = 0;
trace_printf("\tdiff_tree_remote(base = %.7s, remote = %.7s)\n",
sha1_to_hex(base), sha1_to_hex(remote));
diff_setup(&opt);
DIFF_OPT_SET(&opt, RECURSIVE);
opt.output_format = DIFF_FORMAT_NO_OUTPUT;
if (diff_setup_done(&opt) < 0)
die("diff_setup_done failed");
diff_tree_sha1(base, remote, "", &opt);
diffcore_std(&opt);
changes = xcalloc(diff_queued_diff.nr, sizeof(struct notes_merge_pair));
for (i = 0; i < diff_queued_diff.nr; i++) {
struct diff_filepair *p = diff_queued_diff.queue[i];
struct notes_merge_pair *mp;
int occupied;
unsigned char obj[20];
if (verify_notes_filepair(p, obj)) {
trace_printf("\t\tCannot merge entry '%s' (%c): "
"%.7s -> %.7s. Skipping!\n", p->one->path,
p->status, sha1_to_hex(p->one->sha1),
sha1_to_hex(p->two->sha1));
continue;
}
mp = find_notes_merge_pair_pos(changes, len, obj, 1, &occupied);
if (occupied) {
/* We've found an addition/deletion pair */
assert(!hashcmp(mp->obj, obj));
if (is_null_sha1(p->one->sha1)) { /* addition */
assert(is_null_sha1(mp->remote));
hashcpy(mp->remote, p->two->sha1);
} else if (is_null_sha1(p->two->sha1)) { /* deletion */
assert(is_null_sha1(mp->base));
hashcpy(mp->base, p->one->sha1);
} else
assert(!"Invalid existing change recorded");
} else {
hashcpy(mp->obj, obj);
hashcpy(mp->base, p->one->sha1);
hashcpy(mp->local, uninitialized);
hashcpy(mp->remote, p->two->sha1);
len++;
}
trace_printf("\t\tStored remote change for %s: %.7s -> %.7s\n",
sha1_to_hex(mp->obj), sha1_to_hex(mp->base),
sha1_to_hex(mp->remote));
}
diff_flush(&opt);
diff_tree_release_paths(&opt);
*num_changes = len;
return changes;
}
static void diff_tree_local(struct notes_merge_options *o,
struct notes_merge_pair *changes, int len,
const unsigned char *base,
const unsigned char *local)
{
struct diff_options opt;
int i;
trace_printf("\tdiff_tree_local(len = %i, base = %.7s, local = %.7s)\n",
len, sha1_to_hex(base), sha1_to_hex(local));
diff_setup(&opt);
DIFF_OPT_SET(&opt, RECURSIVE);
opt.output_format = DIFF_FORMAT_NO_OUTPUT;
if (diff_setup_done(&opt) < 0)
die("diff_setup_done failed");
diff_tree_sha1(base, local, "", &opt);
diffcore_std(&opt);
for (i = 0; i < diff_queued_diff.nr; i++) {
struct diff_filepair *p = diff_queued_diff.queue[i];
struct notes_merge_pair *mp;
int match;
unsigned char obj[20];
if (verify_notes_filepair(p, obj)) {
trace_printf("\t\tCannot merge entry '%s' (%c): "
"%.7s -> %.7s. Skipping!\n", p->one->path,
p->status, sha1_to_hex(p->one->sha1),
sha1_to_hex(p->two->sha1));
continue;
}
mp = find_notes_merge_pair_pos(changes, len, obj, 0, &match);
if (!match) {
trace_printf("\t\tIgnoring local-only change for %s: "
"%.7s -> %.7s\n", sha1_to_hex(obj),
sha1_to_hex(p->one->sha1),
sha1_to_hex(p->two->sha1));
continue;
}
assert(!hashcmp(mp->obj, obj));
if (is_null_sha1(p->two->sha1)) { /* deletion */
/*
* Either this is a true deletion (1), or it is part
* of an A/D pair (2), or D/A pair (3):
*
* (1) mp->local is uninitialized; set it to null_sha1
* (2) mp->local is not uninitialized; don't touch it
* (3) mp->local is uninitialized; set it to null_sha1
* (will be overwritten by following addition)
*/
if (!hashcmp(mp->local, uninitialized))
hashclr(mp->local);
} else if (is_null_sha1(p->one->sha1)) { /* addition */
/*
* Either this is a true addition (1), or it is part
* of an A/D pair (2), or D/A pair (3):
*
* (1) mp->local is uninitialized; set to p->two->sha1
* (2) mp->local is uninitialized; set to p->two->sha1
* (3) mp->local is null_sha1; set to p->two->sha1
*/
assert(is_null_sha1(mp->local) ||
!hashcmp(mp->local, uninitialized));
hashcpy(mp->local, p->two->sha1);
} else { /* modification */
/*
* This is a true modification. p->one->sha1 shall
* match mp->base, and mp->local shall be uninitialized.
* Set mp->local to p->two->sha1.
*/
assert(!hashcmp(p->one->sha1, mp->base));
assert(!hashcmp(mp->local, uninitialized));
hashcpy(mp->local, p->two->sha1);
}
trace_printf("\t\tStored local change for %s: %.7s -> %.7s\n",
sha1_to_hex(mp->obj), sha1_to_hex(mp->base),
sha1_to_hex(mp->local));
}
diff_flush(&opt);
diff_tree_release_paths(&opt);
}
static void check_notes_merge_worktree(struct notes_merge_options *o)
{
if (!o->has_worktree) {
/*
* Must establish NOTES_MERGE_WORKTREE.
* Abort if NOTES_MERGE_WORKTREE already exists
*/
if (file_exists(git_path(NOTES_MERGE_WORKTREE))) {
if (advice_resolve_conflict)
die("You have not concluded your previous "
"notes merge (%s exists).\nPlease, use "
"'git notes merge --commit' or 'git notes "
"merge --abort' to commit/abort the "
"previous merge before you start a new "
"notes merge.", git_path("NOTES_MERGE_*"));
else
die("You have not concluded your notes merge "
"(%s exists).", git_path("NOTES_MERGE_*"));
}
if (safe_create_leading_directories(git_path(
NOTES_MERGE_WORKTREE "/.test")))
die_errno("unable to create directory %s",
git_path(NOTES_MERGE_WORKTREE));
o->has_worktree = 1;
} else if (!file_exists(git_path(NOTES_MERGE_WORKTREE)))
/* NOTES_MERGE_WORKTREE should already be established */
die("missing '%s'. This should not happen",
git_path(NOTES_MERGE_WORKTREE));
}
static void write_buf_to_worktree(const unsigned char *obj,
const char *buf, unsigned long size)
{
int fd;
char *path = git_path(NOTES_MERGE_WORKTREE "/%s", sha1_to_hex(obj));
if (safe_create_leading_directories(path))
die_errno("unable to create directory for '%s'", path);
if (file_exists(path))
die("found existing file at '%s'", path);
fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, 0666);
if (fd < 0)
die_errno("failed to open '%s'", path);
while (size > 0) {
long ret = write_in_full(fd, buf, size);
if (ret < 0) {
/* Ignore epipe */
if (errno == EPIPE)
break;
die_errno("notes-merge");
} else if (!ret) {
die("notes-merge: disk full?");
}
size -= ret;
buf += ret;
}
close(fd);
}
static void write_note_to_worktree(const unsigned char *obj,
const unsigned char *note)
{
enum object_type type;
unsigned long size;
void *buf = read_sha1_file(note, &type, &size);
if (!buf)
die("cannot read note %s for object %s",
sha1_to_hex(note), sha1_to_hex(obj));
if (type != OBJ_BLOB)
die("blob expected in note %s for object %s",
sha1_to_hex(note), sha1_to_hex(obj));
write_buf_to_worktree(obj, buf, size);
free(buf);
}
static int ll_merge_in_worktree(struct notes_merge_options *o,
struct notes_merge_pair *p)
{
mmbuffer_t result_buf;
mmfile_t base, local, remote;
int status;
read_mmblob(&base, p->base);
read_mmblob(&local, p->local);
read_mmblob(&remote, p->remote);
status = ll_merge(&result_buf, sha1_to_hex(p->obj), &base, NULL,
&local, o->local_ref, &remote, o->remote_ref, 0);
free(base.ptr);
free(local.ptr);
free(remote.ptr);
if ((status < 0) || !result_buf.ptr)
die("Failed to execute internal merge");
write_buf_to_worktree(p->obj, result_buf.ptr, result_buf.size);
free(result_buf.ptr);
return status;
}
static int merge_one_change_manual(struct notes_merge_options *o,
struct notes_merge_pair *p,
struct notes_tree *t)
{
const char *lref = o->local_ref ? o->local_ref : "local version";
const char *rref = o->remote_ref ? o->remote_ref : "remote version";
trace_printf("\t\t\tmerge_one_change_manual(obj = %.7s, base = %.7s, "
"local = %.7s, remote = %.7s)\n",
sha1_to_hex(p->obj), sha1_to_hex(p->base),
sha1_to_hex(p->local), sha1_to_hex(p->remote));
/* add "Conflicts:" section to commit message first time through */
if (!o->has_worktree)
strbuf_addstr(&(o->commit_msg), "\n\nConflicts:\n");
strbuf_addf(&(o->commit_msg), "\t%s\n", sha1_to_hex(p->obj));
OUTPUT(o, 2, "Auto-merging notes for %s", sha1_to_hex(p->obj));
check_notes_merge_worktree(o);
if (is_null_sha1(p->local)) {
/* D/F conflict, checkout p->remote */
assert(!is_null_sha1(p->remote));
OUTPUT(o, 1, "CONFLICT (delete/modify): Notes for object %s "
"deleted in %s and modified in %s. Version from %s "
"left in tree.", sha1_to_hex(p->obj), lref, rref, rref);
write_note_to_worktree(p->obj, p->remote);
} else if (is_null_sha1(p->remote)) {
/* D/F conflict, checkout p->local */
assert(!is_null_sha1(p->local));
OUTPUT(o, 1, "CONFLICT (delete/modify): Notes for object %s "
"deleted in %s and modified in %s. Version from %s "
"left in tree.", sha1_to_hex(p->obj), rref, lref, lref);
write_note_to_worktree(p->obj, p->local);
} else {
/* "regular" conflict, checkout result of ll_merge() */
const char *reason = "content";
if (is_null_sha1(p->base))
reason = "add/add";
assert(!is_null_sha1(p->local));
assert(!is_null_sha1(p->remote));
OUTPUT(o, 1, "CONFLICT (%s): Merge conflict in notes for "
"object %s", reason, sha1_to_hex(p->obj));
ll_merge_in_worktree(o, p);
}
trace_printf("\t\t\tremoving from partial merge result\n");
remove_note(t, p->obj);
return 1;
}
static int merge_one_change(struct notes_merge_options *o,
struct notes_merge_pair *p, struct notes_tree *t)
{
/*
* Return 0 if change is successfully resolved (stored in notes_tree).
* Return 1 is change results in a conflict (NOT stored in notes_tree,
* but instead written to NOTES_MERGE_WORKTREE with conflict markers).
*/
switch (o->strategy) {
case NOTES_MERGE_RESOLVE_MANUAL:
return merge_one_change_manual(o, p, t);
case NOTES_MERGE_RESOLVE_OURS:
OUTPUT(o, 2, "Using local notes for %s", sha1_to_hex(p->obj));
/* nothing to do */
return 0;
case NOTES_MERGE_RESOLVE_THEIRS:
OUTPUT(o, 2, "Using remote notes for %s", sha1_to_hex(p->obj));
if (add_note(t, p->obj, p->remote, combine_notes_overwrite))
die("BUG: combine_notes_overwrite failed");
return 0;
case NOTES_MERGE_RESOLVE_UNION:
OUTPUT(o, 2, "Concatenating local and remote notes for %s",
sha1_to_hex(p->obj));
if (add_note(t, p->obj, p->remote, combine_notes_concatenate))
die("failed to concatenate notes "
"(combine_notes_concatenate)");
return 0;
case NOTES_MERGE_RESOLVE_CAT_SORT_UNIQ:
OUTPUT(o, 2, "Concatenating unique lines in local and remote "
"notes for %s", sha1_to_hex(p->obj));
if (add_note(t, p->obj, p->remote, combine_notes_cat_sort_uniq))
die("failed to concatenate notes "
"(combine_notes_cat_sort_uniq)");
return 0;
}
die("Unknown strategy (%i).", o->strategy);
}
static int merge_changes(struct notes_merge_options *o,
struct notes_merge_pair *changes, int *num_changes,
struct notes_tree *t)
{
int i, conflicts = 0;
trace_printf("\tmerge_changes(num_changes = %i)\n", *num_changes);
for (i = 0; i < *num_changes; i++) {
struct notes_merge_pair *p = changes + i;
trace_printf("\t\t%.7s: %.7s -> %.7s/%.7s\n",
sha1_to_hex(p->obj), sha1_to_hex(p->base),
sha1_to_hex(p->local), sha1_to_hex(p->remote));
if (!hashcmp(p->base, p->remote)) {
/* no remote change; nothing to do */
trace_printf("\t\t\tskipping (no remote change)\n");
} else if (!hashcmp(p->local, p->remote)) {
/* same change in local and remote; nothing to do */
trace_printf("\t\t\tskipping (local == remote)\n");
} else if (!hashcmp(p->local, uninitialized) ||
!hashcmp(p->local, p->base)) {
/* no local change; adopt remote change */
trace_printf("\t\t\tno local change, adopted remote\n");
if (add_note(t, p->obj, p->remote,
combine_notes_overwrite))
die("BUG: combine_notes_overwrite failed");
} else {
/* need file-level merge between local and remote */
trace_printf("\t\t\tneed content-level merge\n");
conflicts += merge_one_change(o, p, t);
}
}
return conflicts;
}
static int merge_from_diffs(struct notes_merge_options *o,
const unsigned char *base,
const unsigned char *local,
const unsigned char *remote, struct notes_tree *t)
{
struct notes_merge_pair *changes;
int num_changes, conflicts;
trace_printf("\tmerge_from_diffs(base = %.7s, local = %.7s, "
"remote = %.7s)\n", sha1_to_hex(base), sha1_to_hex(local),
sha1_to_hex(remote));
changes = diff_tree_remote(o, base, remote, &num_changes);
diff_tree_local(o, changes, num_changes, base, local);
conflicts = merge_changes(o, changes, &num_changes, t);
free(changes);
OUTPUT(o, 4, "Merge result: %i unmerged notes and a %s notes tree",
conflicts, t->dirty ? "dirty" : "clean");
return conflicts ? -1 : 1;
}
void create_notes_commit(struct notes_tree *t, struct commit_list *parents,
const char *msg, unsigned char *result_sha1)
{
unsigned char tree_sha1[20];
assert(t->initialized);
if (write_notes_tree(t, tree_sha1))
die("Failed to write notes tree to database");
if (!parents) {
/* Deduce parent commit from t->ref */
unsigned char parent_sha1[20];
if (!read_ref(t->ref, parent_sha1)) {
struct commit *parent = lookup_commit(parent_sha1);
if (!parent || parse_commit(parent))
die("Failed to find/parse commit %s", t->ref);
commit_list_insert(parent, &parents);
}
/* else: t->ref points to nothing, assume root/orphan commit */
}
if (commit_tree(msg, tree_sha1, parents, result_sha1, NULL))
die("Failed to commit notes tree to database");
}
int notes_merge(struct notes_merge_options *o,
struct notes_tree *local_tree,
unsigned char *result_sha1)
{
unsigned char local_sha1[20], remote_sha1[20];
struct commit *local, *remote;
struct commit_list *bases = NULL;
const unsigned char *base_sha1, *base_tree_sha1;
int result = 0;
assert(o->local_ref && o->remote_ref);
assert(!strcmp(o->local_ref, local_tree->ref));
hashclr(result_sha1);
trace_printf("notes_merge(o->local_ref = %s, o->remote_ref = %s)\n",
o->local_ref, o->remote_ref);
/* Dereference o->local_ref into local_sha1 */
if (!resolve_ref(o->local_ref, local_sha1, 0, NULL))
die("Failed to resolve local notes ref '%s'", o->local_ref);
else if (!check_ref_format(o->local_ref) && is_null_sha1(local_sha1))
local = NULL; /* local_sha1 == null_sha1 indicates unborn ref */
else if (!(local = lookup_commit_reference(local_sha1)))
die("Could not parse local commit %s (%s)",
sha1_to_hex(local_sha1), o->local_ref);
trace_printf("\tlocal commit: %.7s\n", sha1_to_hex(local_sha1));
/* Dereference o->remote_ref into remote_sha1 */
if (get_sha1(o->remote_ref, remote_sha1)) {
/*
* Failed to get remote_sha1. If o->remote_ref looks like an
* unborn ref, perform the merge using an empty notes tree.
*/
if (!check_ref_format(o->remote_ref)) {
hashclr(remote_sha1);
remote = NULL;
} else {
die("Failed to resolve remote notes ref '%s'",
o->remote_ref);
}
} else if (!(remote = lookup_commit_reference(remote_sha1))) {
die("Could not parse remote commit %s (%s)",
sha1_to_hex(remote_sha1), o->remote_ref);
}
trace_printf("\tremote commit: %.7s\n", sha1_to_hex(remote_sha1));
if (!local && !remote)
die("Cannot merge empty notes ref (%s) into empty notes ref "
"(%s)", o->remote_ref, o->local_ref);
if (!local) {
/* result == remote commit */
hashcpy(result_sha1, remote_sha1);
goto found_result;
}
if (!remote) {
/* result == local commit */
hashcpy(result_sha1, local_sha1);
goto found_result;
}
assert(local && remote);
/* Find merge bases */
bases = get_merge_bases(local, remote, 1);
if (!bases) {
base_sha1 = null_sha1;
base_tree_sha1 = (unsigned char *)EMPTY_TREE_SHA1_BIN;
OUTPUT(o, 4, "No merge base found; doing history-less merge");
} else if (!bases->next) {
base_sha1 = bases->item->object.sha1;
base_tree_sha1 = bases->item->tree->object.sha1;
OUTPUT(o, 4, "One merge base found (%.7s)",
sha1_to_hex(base_sha1));
} else {
/* TODO: How to handle multiple merge-bases? */
base_sha1 = bases->item->object.sha1;
base_tree_sha1 = bases->item->tree->object.sha1;
OUTPUT(o, 3, "Multiple merge bases found. Using the first "
"(%.7s)", sha1_to_hex(base_sha1));
}
OUTPUT(o, 4, "Merging remote commit %.7s into local commit %.7s with "
"merge-base %.7s", sha1_to_hex(remote->object.sha1),
sha1_to_hex(local->object.sha1), sha1_to_hex(base_sha1));
if (!hashcmp(remote->object.sha1, base_sha1)) {
/* Already merged; result == local commit */
OUTPUT(o, 2, "Already up-to-date!");
hashcpy(result_sha1, local->object.sha1);
goto found_result;
}
if (!hashcmp(local->object.sha1, base_sha1)) {
/* Fast-forward; result == remote commit */
OUTPUT(o, 2, "Fast-forward");
hashcpy(result_sha1, remote->object.sha1);
goto found_result;
}
result = merge_from_diffs(o, base_tree_sha1, local->tree->object.sha1,
remote->tree->object.sha1, local_tree);
if (result != 0) { /* non-trivial merge (with or without conflicts) */
/* Commit (partial) result */
struct commit_list *parents = NULL;
commit_list_insert(remote, &parents); /* LIFO order */
commit_list_insert(local, &parents);
create_notes_commit(local_tree, parents, o->commit_msg.buf,
result_sha1);
}
found_result:
free_commit_list(bases);
strbuf_release(&(o->commit_msg));
trace_printf("notes_merge(): result = %i, result_sha1 = %.7s\n",
result, sha1_to_hex(result_sha1));
return result;
}
int notes_merge_commit(struct notes_merge_options *o,
struct notes_tree *partial_tree,
struct commit *partial_commit,
unsigned char *result_sha1)
{
/*
* Iterate through files in .git/NOTES_MERGE_WORKTREE and add all
* found notes to 'partial_tree'. Write the updates notes tree to
* the DB, and commit the resulting tree object while reusing the
* commit message and parents from 'partial_commit'.
* Finally store the new commit object SHA1 into 'result_sha1'.
*/
struct dir_struct dir;
const char *path = git_path(NOTES_MERGE_WORKTREE "/");
int path_len = strlen(path), i;
const char *msg = strstr(partial_commit->buffer, "\n\n");
OUTPUT(o, 3, "Committing notes in notes merge worktree at %.*s",
path_len - 1, path);
if (!msg || msg[2] == '\0')
die("partial notes commit has empty message");
msg += 2;
memset(&dir, 0, sizeof(dir));
read_directory(&dir, path, path_len, NULL);
for (i = 0; i < dir.nr; i++) {
struct dir_entry *ent = dir.entries[i];
struct stat st;
const char *relpath = ent->name + path_len;
unsigned char obj_sha1[20], blob_sha1[20];
if (ent->len - path_len != 40 || get_sha1_hex(relpath, obj_sha1)) {
OUTPUT(o, 3, "Skipping non-SHA1 entry '%s'", ent->name);
continue;
}
/* write file as blob, and add to partial_tree */
if (stat(ent->name, &st))
die_errno("Failed to stat '%s'", ent->name);
if (index_path(blob_sha1, ent->name, &st, 1))
die("Failed to write blob object from '%s'", ent->name);
if (add_note(partial_tree, obj_sha1, blob_sha1, NULL))
die("Failed to add resolved note '%s' to notes tree",
ent->name);
OUTPUT(o, 4, "Added resolved note for object %s: %s",
sha1_to_hex(obj_sha1), sha1_to_hex(blob_sha1));
}
create_notes_commit(partial_tree, partial_commit->parents, msg,
result_sha1);
OUTPUT(o, 4, "Finalized notes merge commit: %s",
sha1_to_hex(result_sha1));
return 0;
}
int notes_merge_abort(struct notes_merge_options *o)
{
/* Remove .git/NOTES_MERGE_WORKTREE directory and all files within */
struct strbuf buf = STRBUF_INIT;
int ret;
strbuf_addstr(&buf, git_path(NOTES_MERGE_WORKTREE));
OUTPUT(o, 3, "Removing notes merge worktree at %s", buf.buf);
ret = remove_dir_recursively(&buf, 0);
strbuf_release(&buf);
return ret;
}

98
notes-merge.h Normal file
View File

@ -0,0 +1,98 @@
#ifndef NOTES_MERGE_H
#define NOTES_MERGE_H
#define NOTES_MERGE_WORKTREE "NOTES_MERGE_WORKTREE"
enum notes_merge_verbosity {
NOTES_MERGE_VERBOSITY_DEFAULT = 2,
NOTES_MERGE_VERBOSITY_MAX = 5
};
struct notes_merge_options {
const char *local_ref;
const char *remote_ref;
struct strbuf commit_msg;
int verbosity;
enum {
NOTES_MERGE_RESOLVE_MANUAL = 0,
NOTES_MERGE_RESOLVE_OURS,
NOTES_MERGE_RESOLVE_THEIRS,
NOTES_MERGE_RESOLVE_UNION,
NOTES_MERGE_RESOLVE_CAT_SORT_UNIQ
} strategy;
unsigned has_worktree:1;
};
void init_notes_merge_options(struct notes_merge_options *o);
/*
* Create new notes commit from the given notes tree
*
* Properties of the created commit:
* - tree: the result of converting t to a tree object with write_notes_tree().
* - parents: the given parents OR (if NULL) the commit referenced by t->ref.
* - author/committer: the default determined by commmit_tree().
* - commit message: msg
*
* The resulting commit SHA1 is stored in result_sha1.
*/
void create_notes_commit(struct notes_tree *t, struct commit_list *parents,
const char *msg, unsigned char *result_sha1);
/*
* Merge notes from o->remote_ref into o->local_ref
*
* The given notes_tree 'local_tree' must be the notes_tree referenced by the
* o->local_ref. This is the notes_tree in which the object-level merge is
* performed.
*
* The commits given by the two refs are merged, producing one of the following
* outcomes:
*
* 1. The merge trivially results in an existing commit (e.g. fast-forward or
* already-up-to-date). 'local_tree' is untouched, the SHA1 of the result
* is written into 'result_sha1' and 0 is returned.
* 2. The merge successfully completes, producing a merge commit. local_tree
* contains the updated notes tree, the SHA1 of the resulting commit is
* written into 'result_sha1', and 1 is returned.
* 3. The merge results in conflicts. This is similar to #2 in that the
* partial merge result (i.e. merge result minus the unmerged entries)
* are stored in 'local_tree', and the SHA1 or the resulting commit
* (to be amended when the conflicts have been resolved) is written into
* 'result_sha1'. The unmerged entries are written into the
* .git/NOTES_MERGE_WORKTREE directory with conflict markers.
* -1 is returned.
*
* Both o->local_ref and o->remote_ref must be given (non-NULL), but either ref
* (although not both) may refer to a non-existing notes ref, in which case
* that notes ref is interpreted as an empty notes tree, and the merge
* trivially results in what the other ref points to.
*/
int notes_merge(struct notes_merge_options *o,
struct notes_tree *local_tree,
unsigned char *result_sha1);
/*
* Finalize conflict resolution from an earlier notes_merge()
*
* The given notes tree 'partial_tree' must be the notes_tree corresponding to
* the given 'partial_commit', the partial result commit created by a previous
* call to notes_merge().
*
* This function will add the (now resolved) notes in .git/NOTES_MERGE_WORKTREE
* to 'partial_tree', and create a final notes merge commit, the SHA1 of which
* will be stored in 'result_sha1'.
*/
int notes_merge_commit(struct notes_merge_options *o,
struct notes_tree *partial_tree,
struct commit *partial_commit,
unsigned char *result_sha1);
/*
* Abort conflict resolution from an earlier notes_merge()
*
* Removes the notes merge worktree in .git/NOTES_MERGE_WORKTREE.
*/
int notes_merge_abort(struct notes_merge_options *o);
#endif

272
notes.c
View File

@ -149,86 +149,6 @@ static struct leaf_node *note_tree_find(struct notes_tree *t,
return NULL;
}
/*
* To insert a leaf_node:
* Search to the tree location appropriate for the given leaf_node's key:
* - If location is unused (NULL), store the tweaked pointer directly there
* - If location holds a note entry that matches the note-to-be-inserted, then
* combine the two notes (by calling the given combine_notes function).
* - If location holds a note entry that matches the subtree-to-be-inserted,
* then unpack the subtree-to-be-inserted into the location.
* - If location holds a matching subtree entry, unpack the subtree at that
* location, and restart the insert operation from that level.
* - Else, create a new int_node, holding both the node-at-location and the
* node-to-be-inserted, and store the new int_node into the location.
*/
static void note_tree_insert(struct notes_tree *t, struct int_node *tree,
unsigned char n, struct leaf_node *entry, unsigned char type,
combine_notes_fn combine_notes)
{
struct int_node *new_node;
struct leaf_node *l;
void **p = note_tree_search(t, &tree, &n, entry->key_sha1);
assert(GET_PTR_TYPE(entry) == 0); /* no type bits set */
l = (struct leaf_node *) CLR_PTR_TYPE(*p);
switch (GET_PTR_TYPE(*p)) {
case PTR_TYPE_NULL:
assert(!*p);
*p = SET_PTR_TYPE(entry, type);
return;
case PTR_TYPE_NOTE:
switch (type) {
case PTR_TYPE_NOTE:
if (!hashcmp(l->key_sha1, entry->key_sha1)) {
/* skip concatenation if l == entry */
if (!hashcmp(l->val_sha1, entry->val_sha1))
return;
if (combine_notes(l->val_sha1, entry->val_sha1))
die("failed to combine notes %s and %s"
" for object %s",
sha1_to_hex(l->val_sha1),
sha1_to_hex(entry->val_sha1),
sha1_to_hex(l->key_sha1));
free(entry);
return;
}
break;
case PTR_TYPE_SUBTREE:
if (!SUBTREE_SHA1_PREFIXCMP(l->key_sha1,
entry->key_sha1)) {
/* unpack 'entry' */
load_subtree(t, entry, tree, n);
free(entry);
return;
}
break;
}
break;
case PTR_TYPE_SUBTREE:
if (!SUBTREE_SHA1_PREFIXCMP(entry->key_sha1, l->key_sha1)) {
/* unpack 'l' and restart insert */
*p = NULL;
load_subtree(t, l, tree, n);
free(l);
note_tree_insert(t, tree, n, entry, type,
combine_notes);
return;
}
break;
}
/* non-matching leaf_node */
assert(GET_PTR_TYPE(*p) == PTR_TYPE_NOTE ||
GET_PTR_TYPE(*p) == PTR_TYPE_SUBTREE);
new_node = (struct int_node *) xcalloc(sizeof(struct int_node), 1);
note_tree_insert(t, new_node, n + 1, l, GET_PTR_TYPE(*p),
combine_notes);
*p = SET_PTR_TYPE(new_node, PTR_TYPE_INTERNAL);
note_tree_insert(t, new_node, n + 1, entry, type, combine_notes);
}
/*
* How to consolidate an int_node:
* If there are > 1 non-NULL entries, give up and return non-zero.
@ -305,6 +225,93 @@ static void note_tree_remove(struct notes_tree *t,
i--;
}
/*
* To insert a leaf_node:
* Search to the tree location appropriate for the given leaf_node's key:
* - If location is unused (NULL), store the tweaked pointer directly there
* - If location holds a note entry that matches the note-to-be-inserted, then
* combine the two notes (by calling the given combine_notes function).
* - If location holds a note entry that matches the subtree-to-be-inserted,
* then unpack the subtree-to-be-inserted into the location.
* - If location holds a matching subtree entry, unpack the subtree at that
* location, and restart the insert operation from that level.
* - Else, create a new int_node, holding both the node-at-location and the
* node-to-be-inserted, and store the new int_node into the location.
*/
static int note_tree_insert(struct notes_tree *t, struct int_node *tree,
unsigned char n, struct leaf_node *entry, unsigned char type,
combine_notes_fn combine_notes)
{
struct int_node *new_node;
struct leaf_node *l;
void **p = note_tree_search(t, &tree, &n, entry->key_sha1);
int ret = 0;
assert(GET_PTR_TYPE(entry) == 0); /* no type bits set */
l = (struct leaf_node *) CLR_PTR_TYPE(*p);
switch (GET_PTR_TYPE(*p)) {
case PTR_TYPE_NULL:
assert(!*p);
if (is_null_sha1(entry->val_sha1))
free(entry);
else
*p = SET_PTR_TYPE(entry, type);
return 0;
case PTR_TYPE_NOTE:
switch (type) {
case PTR_TYPE_NOTE:
if (!hashcmp(l->key_sha1, entry->key_sha1)) {
/* skip concatenation if l == entry */
if (!hashcmp(l->val_sha1, entry->val_sha1))
return 0;
ret = combine_notes(l->val_sha1,
entry->val_sha1);
if (!ret && is_null_sha1(l->val_sha1))
note_tree_remove(t, tree, n, entry);
free(entry);
return ret;
}
break;
case PTR_TYPE_SUBTREE:
if (!SUBTREE_SHA1_PREFIXCMP(l->key_sha1,
entry->key_sha1)) {
/* unpack 'entry' */
load_subtree(t, entry, tree, n);
free(entry);
return 0;
}
break;
}
break;
case PTR_TYPE_SUBTREE:
if (!SUBTREE_SHA1_PREFIXCMP(entry->key_sha1, l->key_sha1)) {
/* unpack 'l' and restart insert */
*p = NULL;
load_subtree(t, l, tree, n);
free(l);
return note_tree_insert(t, tree, n, entry, type,
combine_notes);
}
break;
}
/* non-matching leaf_node */
assert(GET_PTR_TYPE(*p) == PTR_TYPE_NOTE ||
GET_PTR_TYPE(*p) == PTR_TYPE_SUBTREE);
if (is_null_sha1(entry->val_sha1)) { /* skip insertion of empty note */
free(entry);
return 0;
}
new_node = (struct int_node *) xcalloc(sizeof(struct int_node), 1);
ret = note_tree_insert(t, new_node, n + 1, l, GET_PTR_TYPE(*p),
combine_notes);
if (ret)
return ret;
*p = SET_PTR_TYPE(new_node, PTR_TYPE_INTERNAL);
return note_tree_insert(t, new_node, n + 1, entry, type, combine_notes);
}
/* Free the entire notes data contained in the given tree */
static void note_tree_free(struct int_node *tree)
{
@ -445,8 +452,12 @@ static void load_subtree(struct notes_tree *t, struct leaf_node *subtree,
l->key_sha1[19] = (unsigned char) len;
type = PTR_TYPE_SUBTREE;
}
note_tree_insert(t, node, n, l, type,
combine_notes_concatenate);
if (note_tree_insert(t, node, n, l, type,
combine_notes_concatenate))
die("Failed to load %s %s into notes tree "
"from %s",
type == PTR_TYPE_NOTE ? "note" : "subtree",
sha1_to_hex(l->key_sha1), t->ref);
}
continue;
@ -804,16 +815,17 @@ int combine_notes_concatenate(unsigned char *cur_sha1,
return 0;
}
/* we will separate the notes by a newline anyway */
/* we will separate the notes by two newlines anyway */
if (cur_msg[cur_len - 1] == '\n')
cur_len--;
/* concatenate cur_msg and new_msg into buf */
buf_len = cur_len + 1 + new_len;
buf_len = cur_len + 2 + new_len;
buf = (char *) xmalloc(buf_len);
memcpy(buf, cur_msg, cur_len);
buf[cur_len] = '\n';
memcpy(buf + cur_len + 1, new_msg, new_len);
buf[cur_len + 1] = '\n';
memcpy(buf + cur_len + 2, new_msg, new_len);
free(cur_msg);
free(new_msg);
@ -836,6 +848,82 @@ int combine_notes_ignore(unsigned char *cur_sha1,
return 0;
}
static int string_list_add_note_lines(struct string_list *sort_uniq_list,
const unsigned char *sha1)
{
char *data;
unsigned long len;
enum object_type t;
struct strbuf buf = STRBUF_INIT;
struct strbuf **lines = NULL;
int i, list_index;
if (is_null_sha1(sha1))
return 0;
/* read_sha1_file NUL-terminates */
data = read_sha1_file(sha1, &t, &len);
if (t != OBJ_BLOB || !data || !len) {
free(data);
return t != OBJ_BLOB || !data;
}
strbuf_attach(&buf, data, len, len + 1);
lines = strbuf_split(&buf, '\n');
for (i = 0; lines[i]; i++) {
if (lines[i]->buf[lines[i]->len - 1] == '\n')
strbuf_setlen(lines[i], lines[i]->len - 1);
if (!lines[i]->len)
continue; /* skip empty lines */
list_index = string_list_find_insert_index(sort_uniq_list,
lines[i]->buf, 0);
if (list_index < 0)
continue; /* skip duplicate lines */
string_list_insert_at_index(sort_uniq_list, list_index,
lines[i]->buf);
}
strbuf_list_free(lines);
strbuf_release(&buf);
return 0;
}
static int string_list_join_lines_helper(struct string_list_item *item,
void *cb_data)
{
struct strbuf *buf = cb_data;
strbuf_addstr(buf, item->string);
strbuf_addch(buf, '\n');
return 0;
}
int combine_notes_cat_sort_uniq(unsigned char *cur_sha1,
const unsigned char *new_sha1)
{
struct string_list sort_uniq_list = { NULL, 0, 0, 1 };
struct strbuf buf = STRBUF_INIT;
int ret = 1;
/* read both note blob objects into unique_lines */
if (string_list_add_note_lines(&sort_uniq_list, cur_sha1))
goto out;
if (string_list_add_note_lines(&sort_uniq_list, new_sha1))
goto out;
/* create a new blob object from sort_uniq_list */
if (for_each_string_list(&sort_uniq_list,
string_list_join_lines_helper, &buf))
goto out;
ret = write_sha1_file(buf.buf, buf.len, blob_type, cur_sha1);
out:
strbuf_release(&buf);
string_list_clear(&sort_uniq_list, 0);
return ret;
}
static int string_list_add_one_ref(const char *path, const unsigned char *sha1,
int flag, void *cb)
{
@ -893,7 +981,7 @@ static int notes_display_config(const char *k, const char *v, void *cb)
return 0;
}
static const char *default_notes_ref(void)
const char *default_notes_ref(void)
{
const char *notes_ref = NULL;
if (!notes_ref)
@ -935,7 +1023,7 @@ void init_notes(struct notes_tree *t, const char *notes_ref,
return;
if (get_tree_entry(object_sha1, "", sha1, &mode))
die("Failed to read notes tree referenced by %s (%s)",
notes_ref, object_sha1);
notes_ref, sha1_to_hex(object_sha1));
hashclr(root_tree.key_sha1);
hashcpy(root_tree.val_sha1, sha1);
@ -989,7 +1077,7 @@ void init_display_notes(struct display_notes_opt *opt)
string_list_clear(&display_notes_refs, 0);
}
void add_note(struct notes_tree *t, const unsigned char *object_sha1,
int add_note(struct notes_tree *t, const unsigned char *object_sha1,
const unsigned char *note_sha1, combine_notes_fn combine_notes)
{
struct leaf_node *l;
@ -1003,7 +1091,7 @@ void add_note(struct notes_tree *t, const unsigned char *object_sha1,
l = (struct leaf_node *) xmalloc(sizeof(struct leaf_node));
hashcpy(l->key_sha1, object_sha1);
hashcpy(l->val_sha1, note_sha1);
note_tree_insert(t, t->root, 0, l, PTR_TYPE_NOTE, combine_notes);
return note_tree_insert(t, t->root, 0, l, PTR_TYPE_NOTE, combine_notes);
}
int remove_note(struct notes_tree *t, const unsigned char *object_sha1)
@ -1182,7 +1270,7 @@ void format_display_notes(const unsigned char *object_sha1,
int copy_note(struct notes_tree *t,
const unsigned char *from_obj, const unsigned char *to_obj,
int force, combine_notes_fn combine_fn)
int force, combine_notes_fn combine_notes)
{
const unsigned char *note = get_note(t, from_obj);
const unsigned char *existing_note = get_note(t, to_obj);
@ -1191,9 +1279,9 @@ int copy_note(struct notes_tree *t,
return 1;
if (note)
add_note(t, to_obj, note, combine_fn);
return add_note(t, to_obj, note, combine_notes);
else if (existing_note)
add_note(t, to_obj, null_sha1, combine_fn);
return add_note(t, to_obj, null_sha1, combine_notes);
return 0;
}

47
notes.h
View File

@ -12,7 +12,10 @@
* resulting SHA1 into the first SHA1 argument (cur_sha1). A non-zero return
* value indicates failure.
*
* The two given SHA1s must both be non-NULL and different from each other.
* The two given SHA1s shall both be non-NULL and different from each other.
* Either of them (but not both) may be == null_sha1, which indicates an
* empty/non-existent note. If the resulting SHA1 (cur_sha1) is == null_sha1,
* the note will be removed from the notes tree.
*
* The default combine_notes function (you get this when passing NULL) is
* combine_notes_concatenate(), which appends the contents of the new note to
@ -24,6 +27,7 @@ typedef int (*combine_notes_fn)(unsigned char *cur_sha1, const unsigned char *ne
int combine_notes_concatenate(unsigned char *cur_sha1, const unsigned char *new_sha1);
int combine_notes_overwrite(unsigned char *cur_sha1, const unsigned char *new_sha1);
int combine_notes_ignore(unsigned char *cur_sha1, const unsigned char *new_sha1);
int combine_notes_cat_sort_uniq(unsigned char *cur_sha1, const unsigned char *new_sha1);
/*
* Notes tree object
@ -43,6 +47,20 @@ extern struct notes_tree {
int dirty;
} default_notes_tree;
/*
* Return the default notes ref.
*
* The default notes ref is the notes ref that is used when notes_ref == NULL
* is passed to init_notes().
*
* This the first of the following to be defined:
* 1. The '--ref' option to 'git notes', if given
* 2. The $GIT_NOTES_REF environment variable, if set
* 3. The value of the core.notesRef config variable, if set
* 4. GIT_NOTES_DEFAULT_REF (i.e. "refs/notes/commits")
*/
const char *default_notes_ref(void);
/*
* Flags controlling behaviour of notes tree initialization
*
@ -76,11 +94,24 @@ void init_notes(struct notes_tree *t, const char *notes_ref,
/*
* Add the given note object to the given notes_tree structure
*
* If there already exists a note for the given object_sha1, the given
* combine_notes function is invoked to break the tie. If not given (i.e.
* combine_notes == NULL), the default combine_notes function for the given
* notes_tree is used.
*
* Passing note_sha1 == null_sha1 indicates the addition of an
* empty/non-existent note. This is a (potentially expensive) no-op unless
* there already exists a note for the given object_sha1, AND combining that
* note with the empty note (using the given combine_notes function) results
* in a new/changed note.
*
* Returns zero on success; non-zero means combine_notes failed.
*
* IMPORTANT: The changes made by add_note() to the given notes_tree structure
* are not persistent until a subsequent call to write_notes_tree() returns
* zero.
*/
void add_note(struct notes_tree *t, const unsigned char *object_sha1,
int add_note(struct notes_tree *t, const unsigned char *object_sha1,
const unsigned char *note_sha1, combine_notes_fn combine_notes);
/*
@ -105,11 +136,18 @@ const unsigned char *get_note(struct notes_tree *t,
/*
* Copy a note from one object to another in the given notes_tree.
*
* Fails if the to_obj already has a note unless 'force' is true.
* Returns 1 if the to_obj already has a note and 'force' is false. Otherwise,
* returns non-zero if 'force' is true, but the given combine_notes function
* failed to combine from_obj's note with to_obj's existing note.
* Returns zero on success.
*
* IMPORTANT: The changes made by copy_note() to the given notes_tree structure
* are not persistent until a subsequent call to write_notes_tree() returns
* zero.
*/
int copy_note(struct notes_tree *t,
const unsigned char *from_obj, const unsigned char *to_obj,
int force, combine_notes_fn combine_fn);
int force, combine_notes_fn combine_notes);
/*
* Flags controlling behaviour of for_each_note()
@ -151,6 +189,7 @@ int copy_note(struct notes_tree *t,
* notes tree) from within the callback:
* - add_note()
* - remove_note()
* - copy_note()
* - free_notes()
*/
typedef int each_note_fn(const unsigned char *object_sha1,

View File

@ -962,6 +962,7 @@ Date: Thu Apr 7 15:27:13 2005 -0700
Notes (other):
a fresh note
$whitespace
another fresh note
EOF
@ -983,8 +984,11 @@ Date: Thu Apr 7 15:27:13 2005 -0700
Notes (other):
a fresh note
$whitespace
another fresh note
$whitespace
append 1
$whitespace
append 2
EOF
@ -1061,4 +1065,23 @@ test_expect_success 'git notes copy diagnoses too many or too few parameters' '
test_must_fail git notes copy one two three
'
test_expect_success 'git notes get-ref (no overrides)' '
git config --unset core.notesRef &&
unset GIT_NOTES_REF &&
test "$(git notes get-ref)" = "refs/notes/commits"
'
test_expect_success 'git notes get-ref (core.notesRef)' '
git config core.notesRef refs/notes/foo &&
test "$(git notes get-ref)" = "refs/notes/foo"
'
test_expect_success 'git notes get-ref (GIT_NOTES_REF)' '
test "$(GIT_NOTES_REF=refs/notes/bar git notes get-ref)" = "refs/notes/bar"
'
test_expect_success 'git notes get-ref (--ref)' '
test "$(GIT_NOTES_REF=refs/notes/bar git notes --ref=baz get-ref)" = "refs/notes/baz"
'
test_done

View File

@ -168,15 +168,16 @@ INPUT_END
}
verify_concatenated_notes () {
git log | grep "^ " > output &&
i=$number_of_commits &&
while [ $i -gt 0 ]; do
echo " commit #$i" &&
echo " first note for commit #$i" &&
echo " second note for commit #$i" &&
i=$(($i-1));
done > expect &&
test_cmp expect output
git log | grep "^ " > output &&
i=$number_of_commits &&
while [ $i -gt 0 ]; do
echo " commit #$i" &&
echo " first note for commit #$i" &&
echo " " &&
echo " second note for commit #$i" &&
i=$(($i-1));
done > expect &&
test_cmp expect output
}
test_expect_success 'test notes in no fanout concatenated with 2/38-fanout' 'test_concatenated_notes "s|^..|&/|" ""'

368
t/t3308-notes-merge.sh Executable file
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@ -0,0 +1,368 @@
#!/bin/sh
#
# Copyright (c) 2010 Johan Herland
#
test_description='Test merging of notes trees'
. ./test-lib.sh
test_expect_success setup '
test_commit 1st &&
test_commit 2nd &&
test_commit 3rd &&
test_commit 4th &&
test_commit 5th &&
# Create notes on 4 first commits
git config core.notesRef refs/notes/x &&
git notes add -m "Notes on 1st commit" 1st &&
git notes add -m "Notes on 2nd commit" 2nd &&
git notes add -m "Notes on 3rd commit" 3rd &&
git notes add -m "Notes on 4th commit" 4th
'
commit_sha1=$(git rev-parse 1st^{commit})
commit_sha2=$(git rev-parse 2nd^{commit})
commit_sha3=$(git rev-parse 3rd^{commit})
commit_sha4=$(git rev-parse 4th^{commit})
commit_sha5=$(git rev-parse 5th^{commit})
verify_notes () {
notes_ref="$1"
git -c core.notesRef="refs/notes/$notes_ref" notes |
sort >"output_notes_$notes_ref" &&
test_cmp "expect_notes_$notes_ref" "output_notes_$notes_ref" &&
git -c core.notesRef="refs/notes/$notes_ref" log --format="%H %s%n%N" \
>"output_log_$notes_ref" &&
test_cmp "expect_log_$notes_ref" "output_log_$notes_ref"
}
cat <<EOF | sort >expect_notes_x
5e93d24084d32e1cb61f7070505b9d2530cca987 $commit_sha4
8366731eeee53787d2bdf8fc1eff7d94757e8da0 $commit_sha3
eede89064cd42441590d6afec6c37b321ada3389 $commit_sha2
daa55ffad6cb99bf64226532147ffcaf5ce8bdd1 $commit_sha1
EOF
cat >expect_log_x <<EOF
$commit_sha5 5th
$commit_sha4 4th
Notes on 4th commit
$commit_sha3 3rd
Notes on 3rd commit
$commit_sha2 2nd
Notes on 2nd commit
$commit_sha1 1st
Notes on 1st commit
EOF
test_expect_success 'verify initial notes (x)' '
verify_notes x
'
cp expect_notes_x expect_notes_y
cp expect_log_x expect_log_y
test_expect_success 'fail to merge empty notes ref into empty notes ref (z => y)' '
test_must_fail git -c "core.notesRef=refs/notes/y" notes merge z
'
test_expect_success 'fail to merge into various non-notes refs' '
test_must_fail git -c "core.notesRef=refs/notes" notes merge x &&
test_must_fail git -c "core.notesRef=refs/notes/" notes merge x &&
mkdir -p .git/refs/notes/dir &&
test_must_fail git -c "core.notesRef=refs/notes/dir" notes merge x &&
test_must_fail git -c "core.notesRef=refs/notes/dir/" notes merge x &&
test_must_fail git -c "core.notesRef=refs/heads/master" notes merge x &&
test_must_fail git -c "core.notesRef=refs/notes/y:" notes merge x &&
test_must_fail git -c "core.notesRef=refs/notes/y:foo" notes merge x &&
test_must_fail git -c "core.notesRef=refs/notes/foo^{bar" notes merge x
'
test_expect_success 'fail to merge various non-note-trees' '
git config core.notesRef refs/notes/y &&
test_must_fail git notes merge refs/notes &&
test_must_fail git notes merge refs/notes/ &&
test_must_fail git notes merge refs/notes/dir &&
test_must_fail git notes merge refs/notes/dir/ &&
test_must_fail git notes merge refs/heads/master &&
test_must_fail git notes merge x: &&
test_must_fail git notes merge x:foo &&
test_must_fail git notes merge foo^{bar
'
test_expect_success 'merge notes into empty notes ref (x => y)' '
git config core.notesRef refs/notes/y &&
git notes merge x &&
verify_notes y &&
# x and y should point to the same notes commit
test "$(git rev-parse refs/notes/x)" = "$(git rev-parse refs/notes/y)"
'
test_expect_success 'merge empty notes ref (z => y)' '
git notes merge z &&
# y should not change (still == x)
test "$(git rev-parse refs/notes/x)" = "$(git rev-parse refs/notes/y)"
'
test_expect_success 'change notes on other notes ref (y)' '
# Not touching notes to 1st commit
git notes remove 2nd &&
git notes append -m "More notes on 3rd commit" 3rd &&
git notes add -f -m "New notes on 4th commit" 4th &&
git notes add -m "Notes on 5th commit" 5th
'
test_expect_success 'merge previous notes commit (y^ => y) => No-op' '
pre_state="$(git rev-parse refs/notes/y)" &&
git notes merge y^ &&
# y should not move
test "$pre_state" = "$(git rev-parse refs/notes/y)"
'
cat <<EOF | sort >expect_notes_y
0f2efbd00262f2fd41dfae33df8765618eeacd99 $commit_sha5
dec2502dac3ea161543f71930044deff93fa945c $commit_sha4
4069cdb399fd45463ec6eef8e051a16a03592d91 $commit_sha3
daa55ffad6cb99bf64226532147ffcaf5ce8bdd1 $commit_sha1
EOF
cat >expect_log_y <<EOF
$commit_sha5 5th
Notes on 5th commit
$commit_sha4 4th
New notes on 4th commit
$commit_sha3 3rd
Notes on 3rd commit
More notes on 3rd commit
$commit_sha2 2nd
$commit_sha1 1st
Notes on 1st commit
EOF
test_expect_success 'verify changed notes on other notes ref (y)' '
verify_notes y
'
test_expect_success 'verify unchanged notes on original notes ref (x)' '
verify_notes x
'
test_expect_success 'merge original notes (x) into changed notes (y) => No-op' '
git notes merge -vvv x &&
verify_notes y &&
verify_notes x
'
cp expect_notes_y expect_notes_x
cp expect_log_y expect_log_x
test_expect_success 'merge changed (y) into original (x) => Fast-forward' '
git config core.notesRef refs/notes/x &&
git notes merge y &&
verify_notes x &&
verify_notes y &&
# x and y should point to same the notes commit
test "$(git rev-parse refs/notes/x)" = "$(git rev-parse refs/notes/y)"
'
test_expect_success 'merge empty notes ref (z => y)' '
# Prepare empty (but valid) notes ref (z)
git config core.notesRef refs/notes/z &&
git notes add -m "foo" &&
git notes remove &&
git notes >output_notes_z &&
test_cmp /dev/null output_notes_z &&
# Do the merge (z => y)
git config core.notesRef refs/notes/y &&
git notes merge z &&
verify_notes y &&
# y should no longer point to the same notes commit as x
test "$(git rev-parse refs/notes/x)" != "$(git rev-parse refs/notes/y)"
'
cat <<EOF | sort >expect_notes_y
0f2efbd00262f2fd41dfae33df8765618eeacd99 $commit_sha5
dec2502dac3ea161543f71930044deff93fa945c $commit_sha4
4069cdb399fd45463ec6eef8e051a16a03592d91 $commit_sha3
d000d30e6ddcfce3a8122c403226a2ce2fd04d9d $commit_sha2
43add6bd0c8c0bc871ac7991e0f5573cfba27804 $commit_sha1
EOF
cat >expect_log_y <<EOF
$commit_sha5 5th
Notes on 5th commit
$commit_sha4 4th
New notes on 4th commit
$commit_sha3 3rd
Notes on 3rd commit
More notes on 3rd commit
$commit_sha2 2nd
New notes on 2nd commit
$commit_sha1 1st
Notes on 1st commit
More notes on 1st commit
EOF
test_expect_success 'change notes on other notes ref (y)' '
# Append to 1st commit notes
git notes append -m "More notes on 1st commit" 1st &&
# Add new notes to 2nd commit
git notes add -m "New notes on 2nd commit" 2nd &&
verify_notes y
'
cat <<EOF | sort >expect_notes_x
0f2efbd00262f2fd41dfae33df8765618eeacd99 $commit_sha5
1f257a3a90328557c452f0817d6cc50c89d315d4 $commit_sha4
daa55ffad6cb99bf64226532147ffcaf5ce8bdd1 $commit_sha1
EOF
cat >expect_log_x <<EOF
$commit_sha5 5th
Notes on 5th commit
$commit_sha4 4th
New notes on 4th commit
More notes on 4th commit
$commit_sha3 3rd
$commit_sha2 2nd
$commit_sha1 1st
Notes on 1st commit
EOF
test_expect_success 'change notes on notes ref (x)' '
git config core.notesRef refs/notes/x &&
git notes remove 3rd &&
git notes append -m "More notes on 4th commit" 4th &&
verify_notes x
'
cat <<EOF | sort >expect_notes_x
0f2efbd00262f2fd41dfae33df8765618eeacd99 $commit_sha5
1f257a3a90328557c452f0817d6cc50c89d315d4 $commit_sha4
d000d30e6ddcfce3a8122c403226a2ce2fd04d9d $commit_sha2
43add6bd0c8c0bc871ac7991e0f5573cfba27804 $commit_sha1
EOF
cat >expect_log_x <<EOF
$commit_sha5 5th
Notes on 5th commit
$commit_sha4 4th
New notes on 4th commit
More notes on 4th commit
$commit_sha3 3rd
$commit_sha2 2nd
New notes on 2nd commit
$commit_sha1 1st
Notes on 1st commit
More notes on 1st commit
EOF
test_expect_success 'merge y into x => Non-conflicting 3-way merge' '
git notes merge y &&
verify_notes x &&
verify_notes y
'
cat <<EOF | sort >expect_notes_w
05a4927951bcef347f51486575b878b2b60137f2 $commit_sha3
d000d30e6ddcfce3a8122c403226a2ce2fd04d9d $commit_sha2
EOF
cat >expect_log_w <<EOF
$commit_sha5 5th
$commit_sha4 4th
$commit_sha3 3rd
New notes on 3rd commit
$commit_sha2 2nd
New notes on 2nd commit
$commit_sha1 1st
EOF
test_expect_success 'create notes on new, separate notes ref (w)' '
git config core.notesRef refs/notes/w &&
# Add same note as refs/notes/y on 2nd commit
git notes add -m "New notes on 2nd commit" 2nd &&
# Add new note on 3rd commit (non-conflicting)
git notes add -m "New notes on 3rd commit" 3rd &&
# Verify state of notes on new, separate notes ref (w)
verify_notes w
'
cat <<EOF | sort >expect_notes_x
0f2efbd00262f2fd41dfae33df8765618eeacd99 $commit_sha5
1f257a3a90328557c452f0817d6cc50c89d315d4 $commit_sha4
05a4927951bcef347f51486575b878b2b60137f2 $commit_sha3
d000d30e6ddcfce3a8122c403226a2ce2fd04d9d $commit_sha2
43add6bd0c8c0bc871ac7991e0f5573cfba27804 $commit_sha1
EOF
cat >expect_log_x <<EOF
$commit_sha5 5th
Notes on 5th commit
$commit_sha4 4th
New notes on 4th commit
More notes on 4th commit
$commit_sha3 3rd
New notes on 3rd commit
$commit_sha2 2nd
New notes on 2nd commit
$commit_sha1 1st
Notes on 1st commit
More notes on 1st commit
EOF
test_expect_success 'merge w into x => Non-conflicting history-less merge' '
git config core.notesRef refs/notes/x &&
git notes merge w &&
# Verify new state of notes on other notes ref (x)
verify_notes x &&
# Also verify that nothing changed on other notes refs (y and w)
verify_notes y &&
verify_notes w
'
test_done

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#!/bin/sh
#
# Copyright (c) 2010 Johan Herland
#
test_description='Test notes merging with auto-resolving strategies'
. ./test-lib.sh
# Set up a notes merge scenario with all kinds of potential conflicts
test_expect_success 'setup commits' '
test_commit 1st &&
test_commit 2nd &&
test_commit 3rd &&
test_commit 4th &&
test_commit 5th &&
test_commit 6th &&
test_commit 7th &&
test_commit 8th &&
test_commit 9th &&
test_commit 10th &&
test_commit 11th &&
test_commit 12th &&
test_commit 13th &&
test_commit 14th &&
test_commit 15th
'
commit_sha1=$(git rev-parse 1st^{commit})
commit_sha2=$(git rev-parse 2nd^{commit})
commit_sha3=$(git rev-parse 3rd^{commit})
commit_sha4=$(git rev-parse 4th^{commit})
commit_sha5=$(git rev-parse 5th^{commit})
commit_sha6=$(git rev-parse 6th^{commit})
commit_sha7=$(git rev-parse 7th^{commit})
commit_sha8=$(git rev-parse 8th^{commit})
commit_sha9=$(git rev-parse 9th^{commit})
commit_sha10=$(git rev-parse 10th^{commit})
commit_sha11=$(git rev-parse 11th^{commit})
commit_sha12=$(git rev-parse 12th^{commit})
commit_sha13=$(git rev-parse 13th^{commit})
commit_sha14=$(git rev-parse 14th^{commit})
commit_sha15=$(git rev-parse 15th^{commit})
verify_notes () {
notes_ref="$1"
suffix="$2"
git -c core.notesRef="refs/notes/$notes_ref" notes |
sort >"output_notes_$suffix" &&
test_cmp "expect_notes_$suffix" "output_notes_$suffix" &&
git -c core.notesRef="refs/notes/$notes_ref" log --format="%H %s%n%N" \
>"output_log_$suffix" &&
test_cmp "expect_log_$suffix" "output_log_$suffix"
}
test_expect_success 'setup merge base (x)' '
git config core.notesRef refs/notes/x &&
git notes add -m "x notes on 6th commit" 6th &&
git notes add -m "x notes on 7th commit" 7th &&
git notes add -m "x notes on 8th commit" 8th &&
git notes add -m "x notes on 9th commit" 9th &&
git notes add -m "x notes on 10th commit" 10th &&
git notes add -m "x notes on 11th commit" 11th &&
git notes add -m "x notes on 12th commit" 12th &&
git notes add -m "x notes on 13th commit" 13th &&
git notes add -m "x notes on 14th commit" 14th &&
git notes add -m "x notes on 15th commit" 15th
'
cat <<EOF | sort >expect_notes_x
457a85d6c814ea208550f15fcc48f804ac8dc023 $commit_sha15
b0c95b954301d69da2bc3723f4cb1680d355937c $commit_sha14
5d30216a129eeffa97d9694ffe8c74317a560315 $commit_sha13
dd161bc149470fd890dd4ab52a4cbd79bbd18c36 $commit_sha12
7abbc45126d680336fb24294f013a7cdfa3ed545 $commit_sha11
b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10
20c613c835011c48a5abe29170a2402ca6354910 $commit_sha9
a3daf8a1e4e5dc3409a303ad8481d57bfea7f5d6 $commit_sha8
897003322b53bc6ca098e9324ee508362347e734 $commit_sha7
11d97fdebfa5ceee540a3da07bce6fa0222bc082 $commit_sha6
EOF
cat >expect_log_x <<EOF
$commit_sha15 15th
x notes on 15th commit
$commit_sha14 14th
x notes on 14th commit
$commit_sha13 13th
x notes on 13th commit
$commit_sha12 12th
x notes on 12th commit
$commit_sha11 11th
x notes on 11th commit
$commit_sha10 10th
x notes on 10th commit
$commit_sha9 9th
x notes on 9th commit
$commit_sha8 8th
x notes on 8th commit
$commit_sha7 7th
x notes on 7th commit
$commit_sha6 6th
x notes on 6th commit
$commit_sha5 5th
$commit_sha4 4th
$commit_sha3 3rd
$commit_sha2 2nd
$commit_sha1 1st
EOF
test_expect_success 'verify state of merge base (x)' 'verify_notes x x'
test_expect_success 'setup local branch (y)' '
git update-ref refs/notes/y refs/notes/x &&
git config core.notesRef refs/notes/y &&
git notes add -f -m "y notes on 3rd commit" 3rd &&
git notes add -f -m "y notes on 4th commit" 4th &&
git notes add -f -m "y notes on 5th commit" 5th &&
git notes remove 6th &&
git notes remove 7th &&
git notes remove 8th &&
git notes add -f -m "y notes on 12th commit" 12th &&
git notes add -f -m "y notes on 13th commit" 13th &&
git notes add -f -m "y notes on 14th commit" 14th &&
git notes add -f -m "y notes on 15th commit" 15th
'
cat <<EOF | sort >expect_notes_y
68b8630d25516028bed862719855b3d6768d7833 $commit_sha15
5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14
3a631fdb6f41b05b55d8f4baf20728ba8f6fccbc $commit_sha13
a66055fa82f7a03fe0c02a6aba3287a85abf7c62 $commit_sha12
7abbc45126d680336fb24294f013a7cdfa3ed545 $commit_sha11
b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10
20c613c835011c48a5abe29170a2402ca6354910 $commit_sha9
154508c7a0bcad82b6fe4b472bc4c26b3bf0825b $commit_sha5
e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4
5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3
EOF
cat >expect_log_y <<EOF
$commit_sha15 15th
y notes on 15th commit
$commit_sha14 14th
y notes on 14th commit
$commit_sha13 13th
y notes on 13th commit
$commit_sha12 12th
y notes on 12th commit
$commit_sha11 11th
x notes on 11th commit
$commit_sha10 10th
x notes on 10th commit
$commit_sha9 9th
x notes on 9th commit
$commit_sha8 8th
$commit_sha7 7th
$commit_sha6 6th
$commit_sha5 5th
y notes on 5th commit
$commit_sha4 4th
y notes on 4th commit
$commit_sha3 3rd
y notes on 3rd commit
$commit_sha2 2nd
$commit_sha1 1st
EOF
test_expect_success 'verify state of local branch (y)' 'verify_notes y y'
test_expect_success 'setup remote branch (z)' '
git update-ref refs/notes/z refs/notes/x &&
git config core.notesRef refs/notes/z &&
git notes add -f -m "z notes on 2nd commit" 2nd &&
git notes add -f -m "y notes on 4th commit" 4th &&
git notes add -f -m "z notes on 5th commit" 5th &&
git notes remove 6th &&
git notes add -f -m "z notes on 8th commit" 8th &&
git notes remove 9th &&
git notes add -f -m "z notes on 11th commit" 11th &&
git notes remove 12th &&
git notes add -f -m "y notes on 14th commit" 14th &&
git notes add -f -m "z notes on 15th commit" 15th
'
cat <<EOF | sort >expect_notes_z
9b4b2c61f0615412da3c10f98ff85b57c04ec765 $commit_sha15
5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14
5d30216a129eeffa97d9694ffe8c74317a560315 $commit_sha13
7e3c53503a3db8dd996cb62e37c66e070b44b54d $commit_sha11
b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10
851e1638784a884c7dd26c5d41f3340f6387413a $commit_sha8
897003322b53bc6ca098e9324ee508362347e734 $commit_sha7
99fc34adfc400b95c67b013115e37e31aa9a6d23 $commit_sha5
e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4
283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
EOF
cat >expect_log_z <<EOF
$commit_sha15 15th
z notes on 15th commit
$commit_sha14 14th
y notes on 14th commit
$commit_sha13 13th
x notes on 13th commit
$commit_sha12 12th
$commit_sha11 11th
z notes on 11th commit
$commit_sha10 10th
x notes on 10th commit
$commit_sha9 9th
$commit_sha8 8th
z notes on 8th commit
$commit_sha7 7th
x notes on 7th commit
$commit_sha6 6th
$commit_sha5 5th
z notes on 5th commit
$commit_sha4 4th
y notes on 4th commit
$commit_sha3 3rd
$commit_sha2 2nd
z notes on 2nd commit
$commit_sha1 1st
EOF
test_expect_success 'verify state of remote branch (z)' 'verify_notes z z'
# At this point, before merging z into y, we have the following status:
#
# commit | base/x | local/y | remote/z | diff from x to y/z | result
# -------|---------|---------|----------|----------------------------|-------
# 1st | [none] | [none] | [none] | unchanged / unchanged | [none]
# 2nd | [none] | [none] | 283b482 | unchanged / added | 283b482
# 3rd | [none] | 5772f42 | [none] | added / unchanged | 5772f42
# 4th | [none] | e2bfd06 | e2bfd06 | added / added (same) | e2bfd06
# 5th | [none] | 154508c | 99fc34a | added / added (diff) | ???
# 6th | 11d97fd | [none] | [none] | removed / removed | [none]
# 7th | 8970033 | [none] | 8970033 | removed / unchanged | [none]
# 8th | a3daf8a | [none] | 851e163 | removed / changed | ???
# 9th | 20c613c | 20c613c | [none] | unchanged / removed | [none]
# 10th | b8d03e1 | b8d03e1 | b8d03e1 | unchanged / unchanged | b8d03e1
# 11th | 7abbc45 | 7abbc45 | 7e3c535 | unchanged / changed | 7e3c535
# 12th | dd161bc | a66055f | [none] | changed / removed | ???
# 13th | 5d30216 | 3a631fd | 5d30216 | changed / unchanged | 3a631fd
# 14th | b0c95b9 | 5de7ea7 | 5de7ea7 | changed / changed (same) | 5de7ea7
# 15th | 457a85d | 68b8630 | 9b4b2c6 | changed / changed (diff) | ???
test_expect_success 'merge z into y with invalid strategy => Fail/No changes' '
git config core.notesRef refs/notes/y &&
test_must_fail git notes merge --strategy=foo z &&
# Verify no changes (y)
verify_notes y y
'
cat <<EOF | sort >expect_notes_ours
68b8630d25516028bed862719855b3d6768d7833 $commit_sha15
5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14
3a631fdb6f41b05b55d8f4baf20728ba8f6fccbc $commit_sha13
a66055fa82f7a03fe0c02a6aba3287a85abf7c62 $commit_sha12
7e3c53503a3db8dd996cb62e37c66e070b44b54d $commit_sha11
b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10
154508c7a0bcad82b6fe4b472bc4c26b3bf0825b $commit_sha5
e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4
5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3
283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
EOF
cat >expect_log_ours <<EOF
$commit_sha15 15th
y notes on 15th commit
$commit_sha14 14th
y notes on 14th commit
$commit_sha13 13th
y notes on 13th commit
$commit_sha12 12th
y notes on 12th commit
$commit_sha11 11th
z notes on 11th commit
$commit_sha10 10th
x notes on 10th commit
$commit_sha9 9th
$commit_sha8 8th
$commit_sha7 7th
$commit_sha6 6th
$commit_sha5 5th
y notes on 5th commit
$commit_sha4 4th
y notes on 4th commit
$commit_sha3 3rd
y notes on 3rd commit
$commit_sha2 2nd
z notes on 2nd commit
$commit_sha1 1st
EOF
test_expect_success 'merge z into y with "ours" strategy => Non-conflicting 3-way merge' '
git notes merge --strategy=ours z &&
verify_notes y ours
'
test_expect_success 'reset to pre-merge state (y)' '
git update-ref refs/notes/y refs/notes/y^1 &&
# Verify pre-merge state
verify_notes y y
'
cat <<EOF | sort >expect_notes_theirs
9b4b2c61f0615412da3c10f98ff85b57c04ec765 $commit_sha15
5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14
3a631fdb6f41b05b55d8f4baf20728ba8f6fccbc $commit_sha13
7e3c53503a3db8dd996cb62e37c66e070b44b54d $commit_sha11
b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10
851e1638784a884c7dd26c5d41f3340f6387413a $commit_sha8
99fc34adfc400b95c67b013115e37e31aa9a6d23 $commit_sha5
e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4
5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3
283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
EOF
cat >expect_log_theirs <<EOF
$commit_sha15 15th
z notes on 15th commit
$commit_sha14 14th
y notes on 14th commit
$commit_sha13 13th
y notes on 13th commit
$commit_sha12 12th
$commit_sha11 11th
z notes on 11th commit
$commit_sha10 10th
x notes on 10th commit
$commit_sha9 9th
$commit_sha8 8th
z notes on 8th commit
$commit_sha7 7th
$commit_sha6 6th
$commit_sha5 5th
z notes on 5th commit
$commit_sha4 4th
y notes on 4th commit
$commit_sha3 3rd
y notes on 3rd commit
$commit_sha2 2nd
z notes on 2nd commit
$commit_sha1 1st
EOF
test_expect_success 'merge z into y with "theirs" strategy => Non-conflicting 3-way merge' '
git notes merge --strategy=theirs z &&
verify_notes y theirs
'
test_expect_success 'reset to pre-merge state (y)' '
git update-ref refs/notes/y refs/notes/y^1 &&
# Verify pre-merge state
verify_notes y y
'
cat <<EOF | sort >expect_notes_union
7c4e546efd0fe939f876beb262ece02797880b54 $commit_sha15
5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14
3a631fdb6f41b05b55d8f4baf20728ba8f6fccbc $commit_sha13
a66055fa82f7a03fe0c02a6aba3287a85abf7c62 $commit_sha12
7e3c53503a3db8dd996cb62e37c66e070b44b54d $commit_sha11
b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10
851e1638784a884c7dd26c5d41f3340f6387413a $commit_sha8
6c841cc36ea496027290967ca96bd2bef54dbb47 $commit_sha5
e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4
5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3
283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
EOF
cat >expect_log_union <<EOF
$commit_sha15 15th
y notes on 15th commit
z notes on 15th commit
$commit_sha14 14th
y notes on 14th commit
$commit_sha13 13th
y notes on 13th commit
$commit_sha12 12th
y notes on 12th commit
$commit_sha11 11th
z notes on 11th commit
$commit_sha10 10th
x notes on 10th commit
$commit_sha9 9th
$commit_sha8 8th
z notes on 8th commit
$commit_sha7 7th
$commit_sha6 6th
$commit_sha5 5th
y notes on 5th commit
z notes on 5th commit
$commit_sha4 4th
y notes on 4th commit
$commit_sha3 3rd
y notes on 3rd commit
$commit_sha2 2nd
z notes on 2nd commit
$commit_sha1 1st
EOF
test_expect_success 'merge z into y with "union" strategy => Non-conflicting 3-way merge' '
git notes merge --strategy=union z &&
verify_notes y union
'
test_expect_success 'reset to pre-merge state (y)' '
git update-ref refs/notes/y refs/notes/y^1 &&
# Verify pre-merge state
verify_notes y y
'
cat <<EOF | sort >expect_notes_union2
d682107b8bf7a7aea1e537a8d5cb6a12b60135f1 $commit_sha15
5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14
3a631fdb6f41b05b55d8f4baf20728ba8f6fccbc $commit_sha13
a66055fa82f7a03fe0c02a6aba3287a85abf7c62 $commit_sha12
7e3c53503a3db8dd996cb62e37c66e070b44b54d $commit_sha11
b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10
851e1638784a884c7dd26c5d41f3340f6387413a $commit_sha8
357b6ca14c7afd59b7f8b8aaaa6b8b723771135b $commit_sha5
e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4
5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3
283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
EOF
cat >expect_log_union2 <<EOF
$commit_sha15 15th
z notes on 15th commit
y notes on 15th commit
$commit_sha14 14th
y notes on 14th commit
$commit_sha13 13th
y notes on 13th commit
$commit_sha12 12th
y notes on 12th commit
$commit_sha11 11th
z notes on 11th commit
$commit_sha10 10th
x notes on 10th commit
$commit_sha9 9th
$commit_sha8 8th
z notes on 8th commit
$commit_sha7 7th
$commit_sha6 6th
$commit_sha5 5th
z notes on 5th commit
y notes on 5th commit
$commit_sha4 4th
y notes on 4th commit
$commit_sha3 3rd
y notes on 3rd commit
$commit_sha2 2nd
z notes on 2nd commit
$commit_sha1 1st
EOF
test_expect_success 'merge y into z with "union" strategy => Non-conflicting 3-way merge' '
git config core.notesRef refs/notes/z &&
git notes merge --strategy=union y &&
verify_notes z union2
'
test_expect_success 'reset to pre-merge state (z)' '
git update-ref refs/notes/z refs/notes/z^1 &&
# Verify pre-merge state
verify_notes z z
'
cat <<EOF | sort >expect_notes_cat_sort_uniq
6be90240b5f54594203e25d9f2f64b7567175aee $commit_sha15
5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14
3a631fdb6f41b05b55d8f4baf20728ba8f6fccbc $commit_sha13
a66055fa82f7a03fe0c02a6aba3287a85abf7c62 $commit_sha12
7e3c53503a3db8dd996cb62e37c66e070b44b54d $commit_sha11
b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10
851e1638784a884c7dd26c5d41f3340f6387413a $commit_sha8
660311d7f78dc53db12ac373a43fca7465381a7e $commit_sha5
e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4
5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3
283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
EOF
cat >expect_log_cat_sort_uniq <<EOF
$commit_sha15 15th
y notes on 15th commit
z notes on 15th commit
$commit_sha14 14th
y notes on 14th commit
$commit_sha13 13th
y notes on 13th commit
$commit_sha12 12th
y notes on 12th commit
$commit_sha11 11th
z notes on 11th commit
$commit_sha10 10th
x notes on 10th commit
$commit_sha9 9th
$commit_sha8 8th
z notes on 8th commit
$commit_sha7 7th
$commit_sha6 6th
$commit_sha5 5th
y notes on 5th commit
z notes on 5th commit
$commit_sha4 4th
y notes on 4th commit
$commit_sha3 3rd
y notes on 3rd commit
$commit_sha2 2nd
z notes on 2nd commit
$commit_sha1 1st
EOF
test_expect_success 'merge y into z with "cat_sort_uniq" strategy => Non-conflicting 3-way merge' '
git notes merge --strategy=cat_sort_uniq y &&
verify_notes z cat_sort_uniq
'
test_done

View File

@ -0,0 +1,556 @@
#!/bin/sh
#
# Copyright (c) 2010 Johan Herland
#
test_description='Test notes merging with manual conflict resolution'
. ./test-lib.sh
# Set up a notes merge scenario with different kinds of conflicts
test_expect_success 'setup commits' '
test_commit 1st &&
test_commit 2nd &&
test_commit 3rd &&
test_commit 4th &&
test_commit 5th
'
commit_sha1=$(git rev-parse 1st^{commit})
commit_sha2=$(git rev-parse 2nd^{commit})
commit_sha3=$(git rev-parse 3rd^{commit})
commit_sha4=$(git rev-parse 4th^{commit})
commit_sha5=$(git rev-parse 5th^{commit})
verify_notes () {
notes_ref="$1"
git -c core.notesRef="refs/notes/$notes_ref" notes |
sort >"output_notes_$notes_ref" &&
test_cmp "expect_notes_$notes_ref" "output_notes_$notes_ref" &&
git -c core.notesRef="refs/notes/$notes_ref" log --format="%H %s%n%N" \
>"output_log_$notes_ref" &&
test_cmp "expect_log_$notes_ref" "output_log_$notes_ref"
}
cat <<EOF | sort >expect_notes_x
6e8e3febca3c2bb896704335cc4d0c34cb2f8715 $commit_sha4
e5388c10860456ee60673025345fe2e153eb8cf8 $commit_sha3
ceefa674873670e7ecd131814d909723cce2b669 $commit_sha2
EOF
cat >expect_log_x <<EOF
$commit_sha5 5th
$commit_sha4 4th
x notes on 4th commit
$commit_sha3 3rd
x notes on 3rd commit
$commit_sha2 2nd
x notes on 2nd commit
$commit_sha1 1st
EOF
test_expect_success 'setup merge base (x)' '
git config core.notesRef refs/notes/x &&
git notes add -m "x notes on 2nd commit" 2nd &&
git notes add -m "x notes on 3rd commit" 3rd &&
git notes add -m "x notes on 4th commit" 4th &&
verify_notes x
'
cat <<EOF | sort >expect_notes_y
e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4
5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3
b0a6021ec006d07e80e9b20ec9b444cbd9d560d3 $commit_sha1
EOF
cat >expect_log_y <<EOF
$commit_sha5 5th
$commit_sha4 4th
y notes on 4th commit
$commit_sha3 3rd
y notes on 3rd commit
$commit_sha2 2nd
$commit_sha1 1st
y notes on 1st commit
EOF
test_expect_success 'setup local branch (y)' '
git update-ref refs/notes/y refs/notes/x &&
git config core.notesRef refs/notes/y &&
git notes add -f -m "y notes on 1st commit" 1st &&
git notes remove 2nd &&
git notes add -f -m "y notes on 3rd commit" 3rd &&
git notes add -f -m "y notes on 4th commit" 4th &&
verify_notes y
'
cat <<EOF | sort >expect_notes_z
cff59c793c20bb49a4e01bc06fb06bad642e0d54 $commit_sha4
283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
0a81da8956346e19bcb27a906f04af327e03e31b $commit_sha1
EOF
cat >expect_log_z <<EOF
$commit_sha5 5th
$commit_sha4 4th
z notes on 4th commit
$commit_sha3 3rd
$commit_sha2 2nd
z notes on 2nd commit
$commit_sha1 1st
z notes on 1st commit
EOF
test_expect_success 'setup remote branch (z)' '
git update-ref refs/notes/z refs/notes/x &&
git config core.notesRef refs/notes/z &&
git notes add -f -m "z notes on 1st commit" 1st &&
git notes add -f -m "z notes on 2nd commit" 2nd &&
git notes remove 3rd &&
git notes add -f -m "z notes on 4th commit" 4th &&
verify_notes z
'
# At this point, before merging z into y, we have the following status:
#
# commit | base/x | local/y | remote/z | diff from x to y/z
# -------|---------|---------|----------|---------------------------
# 1st | [none] | b0a6021 | 0a81da8 | added / added (diff)
# 2nd | ceefa67 | [none] | 283b482 | removed / changed
# 3rd | e5388c1 | 5772f42 | [none] | changed / removed
# 4th | 6e8e3fe | e2bfd06 | cff59c7 | changed / changed (diff)
# 5th | [none] | [none] | [none] | [none]
cat <<EOF | sort >expect_conflicts
$commit_sha1
$commit_sha2
$commit_sha3
$commit_sha4
EOF
cat >expect_conflict_$commit_sha1 <<EOF
<<<<<<< refs/notes/m
y notes on 1st commit
=======
z notes on 1st commit
>>>>>>> refs/notes/z
EOF
cat >expect_conflict_$commit_sha2 <<EOF
z notes on 2nd commit
EOF
cat >expect_conflict_$commit_sha3 <<EOF
y notes on 3rd commit
EOF
cat >expect_conflict_$commit_sha4 <<EOF
<<<<<<< refs/notes/m
y notes on 4th commit
=======
z notes on 4th commit
>>>>>>> refs/notes/z
EOF
cp expect_notes_y expect_notes_m
cp expect_log_y expect_log_m
git rev-parse refs/notes/y > pre_merge_y
git rev-parse refs/notes/z > pre_merge_z
test_expect_success 'merge z into m (== y) with default ("manual") resolver => Conflicting 3-way merge' '
git update-ref refs/notes/m refs/notes/y &&
git config core.notesRef refs/notes/m &&
test_must_fail git notes merge z >output &&
# Output should point to where to resolve conflicts
grep -q "\\.git/NOTES_MERGE_WORKTREE" output &&
# Inspect merge conflicts
ls .git/NOTES_MERGE_WORKTREE >output_conflicts &&
test_cmp expect_conflicts output_conflicts &&
( for f in $(cat expect_conflicts); do
test_cmp "expect_conflict_$f" ".git/NOTES_MERGE_WORKTREE/$f" ||
exit 1
done ) &&
# Verify that current notes tree (pre-merge) has not changed (m == y)
verify_notes y &&
verify_notes m &&
test "$(git rev-parse refs/notes/m)" = "$(cat pre_merge_y)"
'
cat <<EOF | sort >expect_notes_z
00494adecf2d9635a02fa431308d67993f853968 $commit_sha4
283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
0a81da8956346e19bcb27a906f04af327e03e31b $commit_sha1
EOF
cat >expect_log_z <<EOF
$commit_sha5 5th
$commit_sha4 4th
z notes on 4th commit
More z notes on 4th commit
$commit_sha3 3rd
$commit_sha2 2nd
z notes on 2nd commit
$commit_sha1 1st
z notes on 1st commit
EOF
test_expect_success 'change notes in z' '
git notes --ref z append -m "More z notes on 4th commit" 4th &&
verify_notes z
'
test_expect_success 'cannot do merge w/conflicts when previous merge is unfinished' '
test -d .git/NOTES_MERGE_WORKTREE &&
test_must_fail git notes merge z >output 2>&1 &&
# Output should indicate what is wrong
grep -q "\\.git/NOTES_MERGE_\\* exists" output
'
# Setup non-conflicting merge between x and new notes ref w
cat <<EOF | sort >expect_notes_w
ceefa674873670e7ecd131814d909723cce2b669 $commit_sha2
f75d1df88cbfe4258d49852f26cfc83f2ad4494b $commit_sha1
EOF
cat >expect_log_w <<EOF
$commit_sha5 5th
$commit_sha4 4th
$commit_sha3 3rd
$commit_sha2 2nd
x notes on 2nd commit
$commit_sha1 1st
w notes on 1st commit
EOF
test_expect_success 'setup unrelated notes ref (w)' '
git config core.notesRef refs/notes/w &&
git notes add -m "w notes on 1st commit" 1st &&
git notes add -m "x notes on 2nd commit" 2nd &&
verify_notes w
'
cat <<EOF | sort >expect_notes_w
6e8e3febca3c2bb896704335cc4d0c34cb2f8715 $commit_sha4
e5388c10860456ee60673025345fe2e153eb8cf8 $commit_sha3
ceefa674873670e7ecd131814d909723cce2b669 $commit_sha2
f75d1df88cbfe4258d49852f26cfc83f2ad4494b $commit_sha1
EOF
cat >expect_log_w <<EOF
$commit_sha5 5th
$commit_sha4 4th
x notes on 4th commit
$commit_sha3 3rd
x notes on 3rd commit
$commit_sha2 2nd
x notes on 2nd commit
$commit_sha1 1st
w notes on 1st commit
EOF
test_expect_success 'can do merge without conflicts even if previous merge is unfinished (x => w)' '
test -d .git/NOTES_MERGE_WORKTREE &&
git notes merge x &&
verify_notes w &&
# Verify that other notes refs has not changed (x and y)
verify_notes x &&
verify_notes y
'
cat <<EOF | sort >expect_notes_m
021faa20e931fb48986ffc6282b4bb05553ac946 $commit_sha4
5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3
283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
0a59e787e6d688aa6309e56e8c1b89431a0fc1c1 $commit_sha1
EOF
cat >expect_log_m <<EOF
$commit_sha5 5th
$commit_sha4 4th
y and z notes on 4th commit
$commit_sha3 3rd
y notes on 3rd commit
$commit_sha2 2nd
z notes on 2nd commit
$commit_sha1 1st
y and z notes on 1st commit
EOF
test_expect_success 'finalize conflicting merge (z => m)' '
# Resolve conflicts and finalize merge
cat >.git/NOTES_MERGE_WORKTREE/$commit_sha1 <<EOF &&
y and z notes on 1st commit
EOF
cat >.git/NOTES_MERGE_WORKTREE/$commit_sha4 <<EOF &&
y and z notes on 4th commit
EOF
git notes merge --commit &&
# No .git/NOTES_MERGE_* files left
test_must_fail ls .git/NOTES_MERGE_* >output 2>/dev/null &&
test_cmp /dev/null output &&
# Merge commit has pre-merge y and pre-merge z as parents
test "$(git rev-parse refs/notes/m^1)" = "$(cat pre_merge_y)" &&
test "$(git rev-parse refs/notes/m^2)" = "$(cat pre_merge_z)" &&
# Merge commit mentions the notes refs merged
git log -1 --format=%B refs/notes/m > merge_commit_msg &&
grep -q refs/notes/m merge_commit_msg &&
grep -q refs/notes/z merge_commit_msg &&
# Merge commit mentions conflicting notes
grep -q "Conflicts" merge_commit_msg &&
( for sha1 in $(cat expect_conflicts); do
grep -q "$sha1" merge_commit_msg ||
exit 1
done ) &&
# Verify contents of merge result
verify_notes m &&
# Verify that other notes refs has not changed (w, x, y and z)
verify_notes w &&
verify_notes x &&
verify_notes y &&
verify_notes z
'
cat >expect_conflict_$commit_sha4 <<EOF
<<<<<<< refs/notes/m
y notes on 4th commit
=======
z notes on 4th commit
More z notes on 4th commit
>>>>>>> refs/notes/z
EOF
cp expect_notes_y expect_notes_m
cp expect_log_y expect_log_m
git rev-parse refs/notes/y > pre_merge_y
git rev-parse refs/notes/z > pre_merge_z
test_expect_success 'redo merge of z into m (== y) with default ("manual") resolver => Conflicting 3-way merge' '
git update-ref refs/notes/m refs/notes/y &&
git config core.notesRef refs/notes/m &&
test_must_fail git notes merge z >output &&
# Output should point to where to resolve conflicts
grep -q "\\.git/NOTES_MERGE_WORKTREE" output &&
# Inspect merge conflicts
ls .git/NOTES_MERGE_WORKTREE >output_conflicts &&
test_cmp expect_conflicts output_conflicts &&
( for f in $(cat expect_conflicts); do
test_cmp "expect_conflict_$f" ".git/NOTES_MERGE_WORKTREE/$f" ||
exit 1
done ) &&
# Verify that current notes tree (pre-merge) has not changed (m == y)
verify_notes y &&
verify_notes m &&
test "$(git rev-parse refs/notes/m)" = "$(cat pre_merge_y)"
'
test_expect_success 'abort notes merge' '
git notes merge --abort &&
# No .git/NOTES_MERGE_* files left
test_must_fail ls .git/NOTES_MERGE_* >output 2>/dev/null &&
test_cmp /dev/null output &&
# m has not moved (still == y)
test "$(git rev-parse refs/notes/m)" = "$(cat pre_merge_y)"
# Verify that other notes refs has not changed (w, x, y and z)
verify_notes w &&
verify_notes x &&
verify_notes y &&
verify_notes z
'
git rev-parse refs/notes/y > pre_merge_y
git rev-parse refs/notes/z > pre_merge_z
test_expect_success 'redo merge of z into m (== y) with default ("manual") resolver => Conflicting 3-way merge' '
test_must_fail git notes merge z >output &&
# Output should point to where to resolve conflicts
grep -q "\\.git/NOTES_MERGE_WORKTREE" output &&
# Inspect merge conflicts
ls .git/NOTES_MERGE_WORKTREE >output_conflicts &&
test_cmp expect_conflicts output_conflicts &&
( for f in $(cat expect_conflicts); do
test_cmp "expect_conflict_$f" ".git/NOTES_MERGE_WORKTREE/$f" ||
exit 1
done ) &&
# Verify that current notes tree (pre-merge) has not changed (m == y)
verify_notes y &&
verify_notes m &&
test "$(git rev-parse refs/notes/m)" = "$(cat pre_merge_y)"
'
cat <<EOF | sort >expect_notes_m
304dfb4325cf243025b9957486eb605a9b51c199 $commit_sha5
283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
0a59e787e6d688aa6309e56e8c1b89431a0fc1c1 $commit_sha1
EOF
cat >expect_log_m <<EOF
$commit_sha5 5th
new note on 5th commit
$commit_sha4 4th
$commit_sha3 3rd
$commit_sha2 2nd
z notes on 2nd commit
$commit_sha1 1st
y and z notes on 1st commit
EOF
test_expect_success 'add + remove notes in finalized merge (z => m)' '
# Resolve one conflict
cat >.git/NOTES_MERGE_WORKTREE/$commit_sha1 <<EOF &&
y and z notes on 1st commit
EOF
# Remove another conflict
rm .git/NOTES_MERGE_WORKTREE/$commit_sha4 &&
# Remove a D/F conflict
rm .git/NOTES_MERGE_WORKTREE/$commit_sha3 &&
# Add a new note
echo "new note on 5th commit" > .git/NOTES_MERGE_WORKTREE/$commit_sha5 &&
# Finalize merge
git notes merge --commit &&
# No .git/NOTES_MERGE_* files left
test_must_fail ls .git/NOTES_MERGE_* >output 2>/dev/null &&
test_cmp /dev/null output &&
# Merge commit has pre-merge y and pre-merge z as parents
test "$(git rev-parse refs/notes/m^1)" = "$(cat pre_merge_y)" &&
test "$(git rev-parse refs/notes/m^2)" = "$(cat pre_merge_z)" &&
# Merge commit mentions the notes refs merged
git log -1 --format=%B refs/notes/m > merge_commit_msg &&
grep -q refs/notes/m merge_commit_msg &&
grep -q refs/notes/z merge_commit_msg &&
# Merge commit mentions conflicting notes
grep -q "Conflicts" merge_commit_msg &&
( for sha1 in $(cat expect_conflicts); do
grep -q "$sha1" merge_commit_msg ||
exit 1
done ) &&
# Verify contents of merge result
verify_notes m &&
# Verify that other notes refs has not changed (w, x, y and z)
verify_notes w &&
verify_notes x &&
verify_notes y &&
verify_notes z
'
cp expect_notes_y expect_notes_m
cp expect_log_y expect_log_m
test_expect_success 'redo merge of z into m (== y) with default ("manual") resolver => Conflicting 3-way merge' '
git update-ref refs/notes/m refs/notes/y &&
test_must_fail git notes merge z >output &&
# Output should point to where to resolve conflicts
grep -q "\\.git/NOTES_MERGE_WORKTREE" output &&
# Inspect merge conflicts
ls .git/NOTES_MERGE_WORKTREE >output_conflicts &&
test_cmp expect_conflicts output_conflicts &&
( for f in $(cat expect_conflicts); do
test_cmp "expect_conflict_$f" ".git/NOTES_MERGE_WORKTREE/$f" ||
exit 1
done ) &&
# Verify that current notes tree (pre-merge) has not changed (m == y)
verify_notes y &&
verify_notes m &&
test "$(git rev-parse refs/notes/m)" = "$(cat pre_merge_y)"
'
cp expect_notes_w expect_notes_m
cp expect_log_w expect_log_m
test_expect_success 'reset notes ref m to somewhere else (w)' '
git update-ref refs/notes/m refs/notes/w &&
verify_notes m &&
test "$(git rev-parse refs/notes/m)" = "$(git rev-parse refs/notes/w)"
'
test_expect_success 'fail to finalize conflicting merge if underlying ref has moved in the meantime (m != NOTES_MERGE_PARTIAL^1)' '
# Resolve conflicts
cat >.git/NOTES_MERGE_WORKTREE/$commit_sha1 <<EOF &&
y and z notes on 1st commit
EOF
cat >.git/NOTES_MERGE_WORKTREE/$commit_sha4 <<EOF &&
y and z notes on 4th commit
EOF
# Fail to finalize merge
test_must_fail git notes merge --commit >output 2>&1 &&
# .git/NOTES_MERGE_* must remain
test -f .git/NOTES_MERGE_PARTIAL &&
test -f .git/NOTES_MERGE_REF &&
test -f .git/NOTES_MERGE_WORKTREE/$commit_sha1 &&
test -f .git/NOTES_MERGE_WORKTREE/$commit_sha2 &&
test -f .git/NOTES_MERGE_WORKTREE/$commit_sha3 &&
test -f .git/NOTES_MERGE_WORKTREE/$commit_sha4 &&
# Refs are unchanged
test "$(git rev-parse refs/notes/m)" = "$(git rev-parse refs/notes/w)"
test "$(git rev-parse refs/notes/y)" = "$(git rev-parse NOTES_MERGE_PARTIAL^1)"
test "$(git rev-parse refs/notes/m)" != "$(git rev-parse NOTES_MERGE_PARTIAL^1)"
# Mention refs/notes/m, and its current and expected value in output
grep -q "refs/notes/m" output &&
grep -q "$(git rev-parse refs/notes/m)" output &&
grep -q "$(git rev-parse NOTES_MERGE_PARTIAL^1)" output &&
# Verify that other notes refs has not changed (w, x, y and z)
verify_notes w &&
verify_notes x &&
verify_notes y &&
verify_notes z
'
test_expect_success 'resolve situation by aborting the notes merge' '
git notes merge --abort &&
# No .git/NOTES_MERGE_* files left
test_must_fail ls .git/NOTES_MERGE_* >output 2>/dev/null &&
test_cmp /dev/null output &&
# m has not moved (still == w)
test "$(git rev-parse refs/notes/m)" = "$(git rev-parse refs/notes/w)"
# Verify that other notes refs has not changed (w, x, y and z)
verify_notes w &&
verify_notes x &&
verify_notes y &&
verify_notes z
'
test_done

436
t/t3311-notes-merge-fanout.sh Executable file
View File

@ -0,0 +1,436 @@
#!/bin/sh
#
# Copyright (c) 2010 Johan Herland
#
test_description='Test notes merging at various fanout levels'
. ./test-lib.sh
verify_notes () {
notes_ref="$1"
commit="$2"
if test -f "expect_notes_$notes_ref"
then
git -c core.notesRef="refs/notes/$notes_ref" notes |
sort >"output_notes_$notes_ref" &&
test_cmp "expect_notes_$notes_ref" "output_notes_$notes_ref" ||
return 1
fi &&
git -c core.notesRef="refs/notes/$notes_ref" log --format="%H %s%n%N" \
"$commit" >"output_log_$notes_ref" &&
test_cmp "expect_log_$notes_ref" "output_log_$notes_ref"
}
verify_fanout () {
notes_ref="$1"
# Expect entire notes tree to have a fanout == 1
git rev-parse --quiet --verify "refs/notes/$notes_ref" >/dev/null &&
git ls-tree -r --name-only "refs/notes/$notes_ref" |
while read path
do
case "$path" in
??/??????????????????????????????????????)
: true
;;
*)
echo "Invalid path \"$path\"" &&
return 1
;;
esac
done
}
verify_no_fanout () {
notes_ref="$1"
# Expect entire notes tree to have a fanout == 0
git rev-parse --quiet --verify "refs/notes/$notes_ref" >/dev/null &&
git ls-tree -r --name-only "refs/notes/$notes_ref" |
while read path
do
case "$path" in
????????????????????????????????????????)
: true
;;
*)
echo "Invalid path \"$path\"" &&
return 1
;;
esac
done
}
# Set up a notes merge scenario with different kinds of conflicts
test_expect_success 'setup a few initial commits with notes (notes ref: x)' '
git config core.notesRef refs/notes/x &&
for i in 1 2 3 4 5
do
test_commit "commit$i" >/dev/null &&
git notes add -m "notes for commit$i" || return 1
done
'
commit_sha1=$(git rev-parse commit1^{commit})
commit_sha2=$(git rev-parse commit2^{commit})
commit_sha3=$(git rev-parse commit3^{commit})
commit_sha4=$(git rev-parse commit4^{commit})
commit_sha5=$(git rev-parse commit5^{commit})
cat <<EOF | sort >expect_notes_x
aed91155c7a72c2188e781fdf40e0f3761b299db $commit_sha5
99fab268f9d7ee7b011e091a436c78def8eeee69 $commit_sha4
953c20ae26c7aa0b428c20693fe38bc687f9d1a9 $commit_sha3
6358796131b8916eaa2dde6902642942a1cb37e1 $commit_sha2
b02d459c32f0e68f2fe0981033bb34f38776ba47 $commit_sha1
EOF
cat >expect_log_x <<EOF
$commit_sha5 commit5
notes for commit5
$commit_sha4 commit4
notes for commit4
$commit_sha3 commit3
notes for commit3
$commit_sha2 commit2
notes for commit2
$commit_sha1 commit1
notes for commit1
EOF
test_expect_success 'sanity check (x)' '
verify_notes x commit5 &&
verify_no_fanout x
'
num=300
cp expect_log_x expect_log_y
test_expect_success 'Add a few hundred commits w/notes to trigger fanout (x -> y)' '
git update-ref refs/notes/y refs/notes/x &&
git config core.notesRef refs/notes/y &&
i=5 &&
while test $i -lt $num
do
i=$(($i + 1)) &&
test_commit "commit$i" >/dev/null &&
git notes add -m "notes for commit$i" || return 1
done &&
test "$(git rev-parse refs/notes/y)" != "$(git rev-parse refs/notes/x)" &&
# Expected number of commits and notes
test $(git rev-list HEAD | wc -l) = $num &&
test $(git notes list | wc -l) = $num &&
# 5 first notes unchanged
verify_notes y commit5
'
test_expect_success 'notes tree has fanout (y)' 'verify_fanout y'
test_expect_success 'No-op merge (already included) (x => y)' '
git update-ref refs/notes/m refs/notes/y &&
git config core.notesRef refs/notes/m &&
git notes merge x &&
test "$(git rev-parse refs/notes/m)" = "$(git rev-parse refs/notes/y)"
'
test_expect_success 'Fast-forward merge (y => x)' '
git update-ref refs/notes/m refs/notes/x &&
git notes merge y &&
test "$(git rev-parse refs/notes/m)" = "$(git rev-parse refs/notes/y)"
'
cat <<EOF | sort >expect_notes_z
9f506ee70e20379d7f78204c77b334f43d77410d $commit_sha3
23a47d6ea7d589895faf800752054818e1e7627b $commit_sha2
b02d459c32f0e68f2fe0981033bb34f38776ba47 $commit_sha1
EOF
cat >expect_log_z <<EOF
$commit_sha5 commit5
$commit_sha4 commit4
$commit_sha3 commit3
notes for commit3
appended notes for commit3
$commit_sha2 commit2
new notes for commit2
$commit_sha1 commit1
notes for commit1
EOF
test_expect_success 'change some of the initial 5 notes (x -> z)' '
git update-ref refs/notes/z refs/notes/x &&
git config core.notesRef refs/notes/z &&
git notes add -f -m "new notes for commit2" commit2 &&
git notes append -m "appended notes for commit3" commit3 &&
git notes remove commit4 &&
git notes remove commit5 &&
verify_notes z commit5
'
test_expect_success 'notes tree has no fanout (z)' 'verify_no_fanout z'
cp expect_log_z expect_log_m
test_expect_success 'successful merge without conflicts (y => z)' '
git update-ref refs/notes/m refs/notes/z &&
git config core.notesRef refs/notes/m &&
git notes merge y &&
verify_notes m commit5 &&
# x/y/z unchanged
verify_notes x commit5 &&
verify_notes y commit5 &&
verify_notes z commit5
'
test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m'
cat >expect_log_w <<EOF
$commit_sha5 commit5
$commit_sha4 commit4
other notes for commit4
$commit_sha3 commit3
other notes for commit3
$commit_sha2 commit2
notes for commit2
$commit_sha1 commit1
other notes for commit1
EOF
test_expect_success 'introduce conflicting changes (y -> w)' '
git update-ref refs/notes/w refs/notes/y &&
git config core.notesRef refs/notes/w &&
git notes add -f -m "other notes for commit1" commit1 &&
git notes add -f -m "other notes for commit3" commit3 &&
git notes add -f -m "other notes for commit4" commit4 &&
git notes remove commit5 &&
verify_notes w commit5
'
cat >expect_log_m <<EOF
$commit_sha5 commit5
$commit_sha4 commit4
other notes for commit4
$commit_sha3 commit3
other notes for commit3
$commit_sha2 commit2
new notes for commit2
$commit_sha1 commit1
other notes for commit1
EOF
test_expect_success 'successful merge using "ours" strategy (z => w)' '
git update-ref refs/notes/m refs/notes/w &&
git config core.notesRef refs/notes/m &&
git notes merge -s ours z &&
verify_notes m commit5 &&
# w/x/y/z unchanged
verify_notes w commit5 &&
verify_notes x commit5 &&
verify_notes y commit5 &&
verify_notes z commit5
'
test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m'
cat >expect_log_m <<EOF
$commit_sha5 commit5
$commit_sha4 commit4
$commit_sha3 commit3
notes for commit3
appended notes for commit3
$commit_sha2 commit2
new notes for commit2
$commit_sha1 commit1
other notes for commit1
EOF
test_expect_success 'successful merge using "theirs" strategy (z => w)' '
git update-ref refs/notes/m refs/notes/w &&
git notes merge -s theirs z &&
verify_notes m commit5 &&
# w/x/y/z unchanged
verify_notes w commit5 &&
verify_notes x commit5 &&
verify_notes y commit5 &&
verify_notes z commit5
'
test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m'
cat >expect_log_m <<EOF
$commit_sha5 commit5
$commit_sha4 commit4
other notes for commit4
$commit_sha3 commit3
other notes for commit3
notes for commit3
appended notes for commit3
$commit_sha2 commit2
new notes for commit2
$commit_sha1 commit1
other notes for commit1
EOF
test_expect_success 'successful merge using "union" strategy (z => w)' '
git update-ref refs/notes/m refs/notes/w &&
git notes merge -s union z &&
verify_notes m commit5 &&
# w/x/y/z unchanged
verify_notes w commit5 &&
verify_notes x commit5 &&
verify_notes y commit5 &&
verify_notes z commit5
'
test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m'
cat >expect_log_m <<EOF
$commit_sha5 commit5
$commit_sha4 commit4
other notes for commit4
$commit_sha3 commit3
appended notes for commit3
notes for commit3
other notes for commit3
$commit_sha2 commit2
new notes for commit2
$commit_sha1 commit1
other notes for commit1
EOF
test_expect_success 'successful merge using "cat_sort_uniq" strategy (z => w)' '
git update-ref refs/notes/m refs/notes/w &&
git notes merge -s cat_sort_uniq z &&
verify_notes m commit5 &&
# w/x/y/z unchanged
verify_notes w commit5 &&
verify_notes x commit5 &&
verify_notes y commit5 &&
verify_notes z commit5
'
test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m'
# We're merging z into w. Here are the conflicts we expect:
#
# commit | x -> w | x -> z | conflict?
# -------|-----------|-----------|----------
# 1 | changed | unchanged | no, use w
# 2 | unchanged | changed | no, use z
# 3 | changed | changed | yes (w, then z in conflict markers)
# 4 | changed | deleted | yes (w)
# 5 | deleted | deleted | no, deleted
test_expect_success 'fails to merge using "manual" strategy (z => w)' '
git update-ref refs/notes/m refs/notes/w &&
test_must_fail git notes merge z
'
test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m'
cat <<EOF | sort >expect_conflicts
$commit_sha3
$commit_sha4
EOF
cat >expect_conflict_$commit_sha3 <<EOF
<<<<<<< refs/notes/m
other notes for commit3
=======
notes for commit3
appended notes for commit3
>>>>>>> refs/notes/z
EOF
cat >expect_conflict_$commit_sha4 <<EOF
other notes for commit4
EOF
test_expect_success 'verify conflict entries (with no fanout)' '
ls .git/NOTES_MERGE_WORKTREE >output_conflicts &&
test_cmp expect_conflicts output_conflicts &&
( for f in $(cat expect_conflicts); do
test_cmp "expect_conflict_$f" ".git/NOTES_MERGE_WORKTREE/$f" ||
exit 1
done ) &&
# Verify that current notes tree (pre-merge) has not changed (m == w)
test "$(git rev-parse refs/notes/m)" = "$(git rev-parse refs/notes/w)"
'
cat >expect_log_m <<EOF
$commit_sha5 commit5
$commit_sha4 commit4
other notes for commit4
$commit_sha3 commit3
other notes for commit3
appended notes for commit3
$commit_sha2 commit2
new notes for commit2
$commit_sha1 commit1
other notes for commit1
EOF
test_expect_success 'resolve and finalize merge (z => w)' '
cat >.git/NOTES_MERGE_WORKTREE/$commit_sha3 <<EOF &&
other notes for commit3
appended notes for commit3
EOF
git notes merge --commit &&
verify_notes m commit5 &&
# w/x/y/z unchanged
verify_notes w commit5 &&
verify_notes x commit5 &&
verify_notes y commit5 &&
verify_notes z commit5
'
test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m'
test_done

View File

@ -647,6 +647,7 @@ test_expect_success 'rebase -i can copy notes' '
cat >expect <<EOF
an earlier note
a note
EOF

313
t/t7609-merge-abort.sh Executable file
View File

@ -0,0 +1,313 @@
#!/bin/sh
test_description='test aborting in-progress merges
Set up repo with conflicting and non-conflicting branches:
There are three files foo/bar/baz, and the following graph illustrates the
content of these files in each commit:
# foo/bar/baz --- foo/bar/bazz <-- master
# \
# --- foo/barf/bazf <-- conflict_branch
# \
# --- foo/bart/baz <-- clean_branch
Next, test git merge --abort with the following variables:
- before/after successful merge (should fail when not in merge context)
- with/without conflicts
- clean/dirty index before merge
- clean/dirty worktree before merge
- dirty index before merge matches contents on remote branch
- changed/unchanged worktree after merge
- changed/unchanged index after merge
'
. ./test-lib.sh
test_expect_success 'setup' '
# Create the above repo
echo foo > foo &&
echo bar > bar &&
echo baz > baz &&
git add foo bar baz &&
git commit -m initial &&
echo bazz > baz &&
git commit -a -m "second" &&
git checkout -b conflict_branch HEAD^ &&
echo barf > bar &&
echo bazf > baz &&
git commit -a -m "conflict" &&
git checkout -b clean_branch HEAD^ &&
echo bart > bar &&
git commit -a -m "clean" &&
git checkout master
'
pre_merge_head="$(git rev-parse HEAD)"
test_expect_success 'fails without MERGE_HEAD (unstarted merge)' '
test_must_fail git merge --abort 2>output &&
grep -q MERGE_HEAD output &&
test ! -f .git/MERGE_HEAD &&
test "$pre_merge_head" = "$(git rev-parse HEAD)"
'
test_expect_success 'fails without MERGE_HEAD (completed merge)' '
git merge clean_branch &&
test ! -f .git/MERGE_HEAD &&
# Merge successfully completed
post_merge_head="$(git rev-parse HEAD)" &&
test_must_fail git merge --abort 2>output &&
grep -q MERGE_HEAD output &&
test ! -f .git/MERGE_HEAD &&
test "$post_merge_head" = "$(git rev-parse HEAD)"
'
test_expect_success 'Forget previous merge' '
git reset --hard "$pre_merge_head"
'
test_expect_success 'Abort after --no-commit' '
# Redo merge, but stop before creating merge commit
git merge --no-commit clean_branch &&
test -f .git/MERGE_HEAD &&
# Abort non-conflicting merge
git merge --abort &&
test ! -f .git/MERGE_HEAD &&
test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
test -z "$(git diff)" &&
test -z "$(git diff --staged)"
'
test_expect_success 'Abort after conflicts' '
# Create conflicting merge
test_must_fail git merge conflict_branch &&
test -f .git/MERGE_HEAD &&
# Abort conflicting merge
git merge --abort &&
test ! -f .git/MERGE_HEAD &&
test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
test -z "$(git diff)" &&
test -z "$(git diff --staged)"
'
test_expect_success 'Clean merge with dirty index fails' '
echo xyzzy >> foo &&
git add foo &&
git diff --staged > expect &&
test_must_fail git merge clean_branch &&
test ! -f .git/MERGE_HEAD &&
test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
test -z "$(git diff)" &&
git diff --staged > actual &&
test_cmp expect actual
'
test_expect_success 'Conflicting merge with dirty index fails' '
test_must_fail git merge conflict_branch &&
test ! -f .git/MERGE_HEAD &&
test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
test -z "$(git diff)" &&
git diff --staged > actual &&
test_cmp expect actual
'
test_expect_success 'Reset index (but preserve worktree changes)' '
git reset "$pre_merge_head" &&
git diff > actual &&
test_cmp expect actual
'
test_expect_success 'Abort clean merge with non-conflicting dirty worktree' '
git merge --no-commit clean_branch &&
test -f .git/MERGE_HEAD &&
# Abort merge
git merge --abort &&
test ! -f .git/MERGE_HEAD &&
test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
test -z "$(git diff --staged)" &&
git diff > actual &&
test_cmp expect actual
'
test_expect_success 'Abort conflicting merge with non-conflicting dirty worktree' '
test_must_fail git merge conflict_branch &&
test -f .git/MERGE_HEAD &&
# Abort merge
git merge --abort &&
test ! -f .git/MERGE_HEAD &&
test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
test -z "$(git diff --staged)" &&
git diff > actual &&
test_cmp expect actual
'
test_expect_success 'Reset worktree changes' '
git reset --hard "$pre_merge_head"
'
test_expect_success 'Fail clean merge with conflicting dirty worktree' '
echo xyzzy >> bar &&
git diff > expect &&
test_must_fail git merge --no-commit clean_branch &&
test ! -f .git/MERGE_HEAD &&
test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
test -z "$(git diff --staged)" &&
git diff > actual &&
test_cmp expect actual
'
test_expect_success 'Fail conflicting merge with conflicting dirty worktree' '
test_must_fail git merge conflict_branch &&
test ! -f .git/MERGE_HEAD &&
test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
test -z "$(git diff --staged)" &&
git diff > actual &&
test_cmp expect actual
'
test_expect_success 'Reset worktree changes' '
git reset --hard "$pre_merge_head"
'
test_expect_success 'Fail clean merge with matching dirty worktree' '
echo bart > bar &&
git diff > expect &&
test_must_fail git merge --no-commit clean_branch &&
test ! -f .git/MERGE_HEAD &&
test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
test -z "$(git diff --staged)" &&
git diff > actual &&
test_cmp expect actual
'
test_expect_success 'Abort clean merge with matching dirty index' '
git add bar &&
git diff --staged > expect &&
git merge --no-commit clean_branch &&
test -f .git/MERGE_HEAD &&
### When aborting the merge, git will discard all staged changes,
### including those that were staged pre-merge. In other words,
### --abort will LOSE any staged changes (the staged changes that
### are lost must match the merge result, or the merge would not
### have been allowed to start). Change expectations accordingly:
rm expect &&
touch expect &&
# Abort merge
git merge --abort &&
test ! -f .git/MERGE_HEAD &&
test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
git diff --staged > actual &&
test_cmp expect actual &&
test -z "$(git diff)"
'
test_expect_success 'Reset worktree changes' '
git reset --hard "$pre_merge_head"
'
test_expect_success 'Fail conflicting merge with matching dirty worktree' '
echo barf > bar &&
git diff > expect &&
test_must_fail git merge conflict_branch &&
test ! -f .git/MERGE_HEAD &&
test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
test -z "$(git diff --staged)" &&
git diff > actual &&
test_cmp expect actual
'
test_expect_success 'Abort conflicting merge with matching dirty index' '
git add bar &&
git diff --staged > expect &&
test_must_fail git merge conflict_branch &&
test -f .git/MERGE_HEAD &&
### When aborting the merge, git will discard all staged changes,
### including those that were staged pre-merge. In other words,
### --abort will LOSE any staged changes (the staged changes that
### are lost must match the merge result, or the merge would not
### have been allowed to start). Change expectations accordingly:
rm expect &&
touch expect &&
# Abort merge
git merge --abort &&
test ! -f .git/MERGE_HEAD &&
test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
git diff --staged > actual &&
test_cmp expect actual &&
test -z "$(git diff)"
'
test_expect_success 'Reset worktree changes' '
git reset --hard "$pre_merge_head"
'
test_expect_success 'Abort merge with pre- and post-merge worktree changes' '
# Pre-merge worktree changes
echo xyzzy > foo &&
echo barf > bar &&
git add bar &&
git diff > expect &&
git diff --staged > expect-staged &&
# Perform merge
test_must_fail git merge conflict_branch &&
test -f .git/MERGE_HEAD &&
# Post-merge worktree changes
echo yzxxz > foo &&
echo blech > baz &&
### When aborting the merge, git will discard staged changes (bar)
### and unmerged changes (baz). Other changes that are neither
### staged nor marked as unmerged (foo), will be preserved. For
### these changed, git cannot tell pre-merge changes apart from
### post-merge changes, so the post-merge changes will be
### preserved. Change expectations accordingly:
git diff -- foo > expect &&
rm expect-staged &&
touch expect-staged &&
# Abort merge
git merge --abort &&
test ! -f .git/MERGE_HEAD &&
test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
git diff > actual &&
test_cmp expect actual &&
git diff --staged > actual-staged &&
test_cmp expect-staged actual-staged
'
test_expect_success 'Reset worktree changes' '
git reset --hard "$pre_merge_head"
'
test_expect_success 'Abort merge with pre- and post-merge index changes' '
# Pre-merge worktree changes
echo xyzzy > foo &&
echo barf > bar &&
git add bar &&
git diff > expect &&
git diff --staged > expect-staged &&
# Perform merge
test_must_fail git merge conflict_branch &&
test -f .git/MERGE_HEAD &&
# Post-merge worktree changes
echo yzxxz > foo &&
echo blech > baz &&
git add foo bar &&
### When aborting the merge, git will discard all staged changes
### (foo, bar and baz), and no changes will be preserved. Whether
### the changes were staged pre- or post-merge does not matter
### (except for not preventing starting the merge).
### Change expectations accordingly:
rm expect expect-staged &&
touch expect &&
touch expect-staged &&
# Abort merge
git merge --abort &&
test ! -f .git/MERGE_HEAD &&
test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
git diff > actual &&
test_cmp expect actual &&
git diff --staged > actual-staged &&
test_cmp expect-staged actual-staged
'
test_done

View File

@ -255,13 +255,18 @@ EOF
INPUT_END
whitespace=" "
cat >expect <<EXPECT_END
fourth commit
pre-prefix of note for fourth commit
$whitespace
prefix of note for fourth commit
$whitespace
third note for fourth commit
third commit
prefix of note for third commit
$whitespace
third note for third commit
second commit
third note for second commit