From: Johannes Schindelin <johannes.schindelin@gmx.de>
To: git@vger.kernel.org
Cc: Junio C Hamano <gitster@pobox.com>,
Jakub Narebski <jnareb@gmail.com>,
Stefan Beller <sbeller@google.com>,
Eric Sunshine <sunshine@sunshineco.com>,
Stefan Beller <sbeller@google.com>
Subject: [PATCH v2 0/7] Deprecate .git/info/grafts
Date: Thu, 19 Apr 2018 10:17:09 +0200 (DST) [thread overview]
Message-ID: <cover.1524125760.git.johannes.schindelin@gmx.de> (raw)
In-Reply-To: <0f0942043678fe76f8d654306482ee26fac643f0.1523617836.git.johannes.schindelin@gmx.de>
It is fragile, as there is no way for the revision machinery to say "but
now I want to traverse the graph ignoring the graft file" e.g. when
pushing commits to a remote repository (which, as a consequence, can
miss commits).
And we already have a better solution with `git replace --graft <comit>
[<parent>...]`.
Changes since v1:
- Fixed typo (stich -> stitch).
- Added reference in the commit message to the patch where `git replace`
reached feature parity with the graft file.
- Added the --convert-graft-file option to `git replace` (with tests).
- Adjusted the advice to suggest --convert-graft-file instead.
- Adjusted the documentation of filter-branch and technical/shallow to
reflect the fact that grafts are deprecated.
Johannes Schindelin (7):
replace: "libify" create_graft()
replace: introduce --convert-graft-file
Add a test for `git replace --convert-graft-file`
Deprecate support for .git/info/grafts
filter-branch: stop suggesting to use grafts
technical/shallow: describe the relationship with replace refs
technical/shallow: describe why shallow cannot use replace refs
Documentation/git-filter-branch.txt | 2 +-
Documentation/git-replace.txt | 11 +++--
Documentation/technical/shallow.txt | 24 +++++++----
advice.c | 2 +
advice.h | 1 +
builtin/replace.c | 63 ++++++++++++++++++++++++++++-
commit.c | 10 +++++
t/t6001-rev-list-graft.sh | 9 +++++
t/t6050-replace.sh | 20 +++++++++
9 files changed, 129 insertions(+), 13 deletions(-)
base-commit: fe0a9eaf31dd0c349ae4308498c33a5c3794b293
Published-As: https://github.com/dscho/git/releases/tag/deprecate-grafts-v2
Fetch-It-Via: git fetch https://github.com/dscho/git deprecate-grafts-v2
Interdiff vs v1:
diff --git a/Documentation/git-filter-branch.txt b/Documentation/git-filter-branch.txt
index b634043183b..1d4d2f86045 100644
--- a/Documentation/git-filter-branch.txt
+++ b/Documentation/git-filter-branch.txt
@@ -288,7 +288,7 @@ git filter-branch --parent-filter \
or even simpler:
-----------------------------------------------
-echo "$commit-id $graft-id" >> .git/info/grafts
+git replace --graft $commit-id $graft-id
git filter-branch $graft-id..HEAD
-----------------------------------------------
diff --git a/Documentation/git-replace.txt b/Documentation/git-replace.txt
index e5c57ae6ef4..4dc0686f7d6 100644
--- a/Documentation/git-replace.txt
+++ b/Documentation/git-replace.txt
@@ -11,6 +11,7 @@ SYNOPSIS
'git replace' [-f] <object> <replacement>
'git replace' [-f] --edit <object>
'git replace' [-f] --graft <commit> [<parent>...]
+'git replace' [-f] --convert-graft-file
'git replace' -d <object>...
'git replace' [--format=<format>] [-l [<pattern>]]
@@ -87,9 +88,13 @@ OPTIONS
content as <commit> except that its parents will be
[<parent>...] instead of <commit>'s parents. A replacement ref
is then created to replace <commit> with the newly created
- commit. See contrib/convert-grafts-to-replace-refs.sh for an
- example script based on this option that can convert grafts to
- replace refs.
+ commit. Use `--convert-graft-file` to convert a
+ `$GIT_DIR/info/grafts` file use replace refs instead.
+
+--convert-graft-file::
+ Creates graft commits for all entries in `$GIT_DIR/info/grafts`
+ and deletes that file upon success. The purpose is to help users
+ with transitioning off of the now-deprecated graft file.
-l <pattern>::
--list <pattern>::
diff --git a/Documentation/technical/shallow.txt b/Documentation/technical/shallow.txt
index 5183b154229..cb79181c2bb 100644
--- a/Documentation/technical/shallow.txt
+++ b/Documentation/technical/shallow.txt
@@ -9,19 +9,29 @@ these commits have no parents.
*********************************************************
The basic idea is to write the SHA-1s of shallow commits into
-$GIT_DIR/shallow, and handle its contents like the contents
-of $GIT_DIR/info/grafts (with the difference that shallow
-cannot contain parent information).
+$GIT_DIR/shallow, and handle its contents similar to replace
+refs (with the difference that shallow does not actually
+create those replace refs) and very much like the deprecated
+graft file (with the difference that shallow commits will
+always have their parents grafted away, not replaced by
+different parents).
-This information is stored in a new file instead of grafts, or
-even the config, since the user should not touch that file
-at all (even throughout development of the shallow clone, it
-was never manually edited!).
+This information is stored in a special-purpose file because the
+user should not touch that file at all (even throughout
+development of the shallow clone, it was never manually
+edited!).
Each line contains exactly one SHA-1. When read, a commit_graft
will be constructed, which has nr_parent < 0 to make it easier
to discern from user provided grafts.
+Note that the shallow feature could not be changed easily to
+use replace refs: a commit containing a `mergetag` is not allowed
+to be replaced, not even by a root commit. Such a commit can be
+made shallow, though. Also, having a `shallow` file explicitly
+listing all the commits made shallow makes it a *lot* easier to
+do shallow-specific things such as to deepen the history.
+
Since fsck-objects relies on the library to read the objects,
it honours shallow commits automatically.
diff --git a/builtin/replace.c b/builtin/replace.c
index 935647be6bd..4cdc00a96df 100644
--- a/builtin/replace.c
+++ b/builtin/replace.c
@@ -20,6 +20,7 @@ static const char * const git_replace_usage[] = {
N_("git replace [-f] <object> <replacement>"),
N_("git replace [-f] --edit <object>"),
N_("git replace [-f] --graft <commit> [<parent>...]"),
+ N_("git replace [-f] --convert-graft-file"),
N_("git replace -d <object>..."),
N_("git replace [--format=<format>] [-l [<pattern>]]"),
NULL
@@ -395,7 +396,9 @@ static int create_graft(int argc, const char **argv, int force)
if (get_oid(old_ref, &old_oid) < 0)
die(_("Not a valid object name: '%s'"), old_ref);
- commit = lookup_commit_or_die(&old_oid, old_ref);
+ commit = lookup_commit_reference(&old_oid);
+ if (!commit)
+ return error(_("could not parse %s"), old_ref);
buffer = get_commit_buffer(commit, &size);
strbuf_add(&buf, buffer, size);
@@ -421,6 +424,53 @@ static int create_graft(int argc, const char **argv, int force)
return replace_object_oid(old_ref, &old_oid, "replacement", &new_oid, force);
}
+static int convert_graft_file(int force)
+{
+ const char *graft_file = get_graft_file();
+ FILE *fp = fopen_or_warn(graft_file, "r");
+ struct strbuf buf = STRBUF_INIT, err = STRBUF_INIT;
+ struct argv_array args = ARGV_ARRAY_INIT;
+
+ if (!fp)
+ return -1;
+
+ while (strbuf_getline(&buf, fp) != EOF) {
+ int i = 0, j;
+
+ while (i != buf.len) {
+ char save;
+
+ for (j = i; j < buf.len && !isspace(buf.buf[j]); j++)
+ ; /* look further */
+ save = buf.buf[j];
+ buf.buf[j] = '\0';
+ argv_array_push(&args, buf.buf + i);
+ buf.buf[j] = save;
+
+ while (j < buf.len && isspace(buf.buf[j]))
+ j++;
+ i = j;
+ }
+
+ if (create_graft(args.argc, args.argv, force))
+ strbuf_addf(&err, "\n\t%s", buf.buf);
+
+ argv_array_clear(&args);
+ strbuf_reset(&buf);
+ }
+
+ strbuf_release(&buf);
+ argv_array_clear(&args);
+
+ if (!err.len)
+ return unlink_or_warn(graft_file);
+
+ warning(_("could not convert the following graft(s):\n%s"), err.buf);
+ strbuf_release(&err);
+
+ return -1;
+}
+
int cmd_replace(int argc, const char **argv, const char *prefix)
{
int force = 0;
@@ -432,6 +482,7 @@ int cmd_replace(int argc, const char **argv, const char *prefix)
MODE_DELETE,
MODE_EDIT,
MODE_GRAFT,
+ MODE_CONVERT_GRAFT_FILE,
MODE_REPLACE
} cmdmode = MODE_UNSPECIFIED;
struct option options[] = {
@@ -439,6 +490,7 @@ int cmd_replace(int argc, const char **argv, const char *prefix)
OPT_CMDMODE('d', "delete", &cmdmode, N_("delete replace refs"), MODE_DELETE),
OPT_CMDMODE('e', "edit", &cmdmode, N_("edit existing object"), MODE_EDIT),
OPT_CMDMODE('g', "graft", &cmdmode, N_("change a commit's parents"), MODE_GRAFT),
+ OPT_CMDMODE(0, "convert-graft-file", &cmdmode, N_("convert existing graft file"), MODE_CONVERT_GRAFT_FILE),
OPT_BOOL_F('f', "force", &force, N_("replace the ref if it exists"),
PARSE_OPT_NOCOMPLETE),
OPT_BOOL(0, "raw", &raw, N_("do not pretty-print contents for --edit")),
@@ -461,7 +513,8 @@ int cmd_replace(int argc, const char **argv, const char *prefix)
if (force &&
cmdmode != MODE_REPLACE &&
cmdmode != MODE_EDIT &&
- cmdmode != MODE_GRAFT)
+ cmdmode != MODE_GRAFT &&
+ cmdmode != MODE_CONVERT_GRAFT_FILE)
usage_msg_opt("-f only makes sense when writing a replacement",
git_replace_usage, options);
@@ -494,6 +547,12 @@ int cmd_replace(int argc, const char **argv, const char *prefix)
git_replace_usage, options);
return create_graft(argc, argv, force);
+ case MODE_CONVERT_GRAFT_FILE:
+ if (argc != 0)
+ usage_msg_opt("--convert-graft-file takes no argument",
+ git_replace_usage, options);
+ return !!convert_graft_file(force);
+
case MODE_LIST:
if (argc > 1)
usage_msg_opt("only one pattern can be given with -l",
diff --git a/commit.c b/commit.c
index a96b0a27154..1a5e8777617 100644
--- a/commit.c
+++ b/commit.c
@@ -181,7 +181,8 @@ static int read_graft_file(const char *graft_file)
advise(_("Support for <GIT_DIR>/info/grafts is deprecated\n"
"and will be removed in a future Git version.\n"
"\n"
- "Please use \"git replace --graft [...]\" instead.\n"
+ "Please use \"git replace --convert-graft-file\"\n"
+ "to convert the grafts into replace refs.\n"
"\n"
"Turn this message off by running\n"
"\"git config advice.graftFileDeprecated false\""));
diff --git a/t/t6050-replace.sh b/t/t6050-replace.sh
index c630aba657e..77ded6df653 100755
--- a/t/t6050-replace.sh
+++ b/t/t6050-replace.sh
@@ -444,4 +444,24 @@ test_expect_success GPG '--graft on a commit with a mergetag' '
git replace -d $HASH10
'
+test_expect_success '--convert-graft-file' '
+ : add and convert graft file &&
+ printf "%s\n%s %s\n%s\n" \
+ $(git rev-parse HEAD^^ HEAD^ HEAD^^ HEAD^2) \
+ >.git/info/grafts &&
+ git replace --convert-graft-file &&
+ test_path_is_missing .git/info/grafts &&
+
+ : verify that the history is now "grafted" &&
+ git rev-list HEAD >out &&
+ test_line_count = 4 out &&
+
+ : create invalid graft file and verify that it is not deleted &&
+ test_when_finished "rm -f .git/info/grafts" &&
+ echo $EMPTY_BLOB $EMPTY_TREE >.git/info/grafts &&
+ test_must_fail git replace --convert-graft-file 2>err &&
+ grep "$EMPTY_BLOB $EMPTY_TREE" err &&
+ grep "$EMPTY_BLOB $EMPTY_TREE" .git/info/grafts
+'
+
test_done
--
2.17.0.windows.1.4.g7e4058d72e3
next prev parent reply other threads:[~2018-04-19 8:17 UTC|newest]
Thread overview: 115+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-13 11:11 [PATCH] Deprecate support for .git/info/grafts Johannes Schindelin
2018-04-13 18:22 ` Stefan Beller
2018-04-13 22:35 ` Johannes Schindelin
2018-04-13 22:45 ` Stefan Beller
2018-04-19 8:15 ` Johannes Schindelin
2018-04-13 18:57 ` Eric Sunshine
2018-04-19 8:14 ` Johannes Schindelin
2018-04-19 8:17 ` Johannes Schindelin [this message]
2018-04-19 8:17 ` [PATCH v2 1/7] replace: "libify" create_graft() Johannes Schindelin
2018-04-20 0:25 ` Junio C Hamano
2018-04-20 11:51 ` Jakub Narebski
2018-04-20 15:32 ` Johannes Schindelin
2018-04-19 8:17 ` [PATCH v2 2/7] replace: introduce --convert-graft-file Johannes Schindelin
2018-04-19 10:09 ` Christian Couder
2018-04-20 13:57 ` Johannes Schindelin
2018-04-20 1:05 ` Junio C Hamano
2018-04-20 15:26 ` Johannes Schindelin
2018-04-19 8:18 ` [PATCH v2 3/7] Add a test for `git replace --convert-graft-file` Johannes Schindelin
2018-04-20 1:21 ` Junio C Hamano
2018-04-20 15:31 ` Johannes Schindelin
2018-04-19 8:18 ` [PATCH v2 4/7] Deprecate support for .git/info/grafts Johannes Schindelin
2018-04-19 8:18 ` [PATCH v2 5/7] filter-branch: stop suggesting to use grafts Johannes Schindelin
2018-04-19 8:19 ` [PATCH v2 6/7] technical/shallow: describe the relationship with replace refs Johannes Schindelin
2018-04-19 8:21 ` [PATCH v2 7/7] technical/shallow: describe why shallow cannot use " Johannes Schindelin
2018-04-20 22:20 ` [PATCH v3 00/11] Deprecate .git/info/grafts Johannes Schindelin
2018-04-20 22:20 ` [PATCH v3 01/11] argv_array: offer to split a string by whitespace Johannes Schindelin
2018-04-20 23:29 ` Stefan Beller
2018-04-21 9:39 ` Johannes Schindelin
2018-04-20 22:21 ` [PATCH v3 02/11] commit: Let the callback of for_each_mergetag return on error Johannes Schindelin
2018-04-20 22:21 ` [PATCH v3 03/11] replace: avoid using die() to indicate a bug Johannes Schindelin
2018-04-20 22:21 ` [PATCH v3 04/11] replace: "libify" create_graft() and callees Johannes Schindelin
2018-04-20 22:22 ` [PATCH v3 05/11] replace: introduce --convert-graft-file Johannes Schindelin
2018-04-20 22:23 ` [PATCH v3 06/11] Add a test for `git replace --convert-graft-file` Johannes Schindelin
2018-04-21 6:20 ` SZEDER Gábor
2018-04-21 9:42 ` Johannes Schindelin
2018-04-20 22:24 ` [PATCH v3 07/11] Deprecate support for .git/info/grafts Johannes Schindelin
2018-04-20 22:25 ` [PATCH v3 08/11] filter-branch: stop suggesting to use grafts Johannes Schindelin
2018-04-20 22:26 ` [PATCH v3 09/11] technical/shallow: describe the relationship with replace refs Johannes Schindelin
2018-04-22 15:16 ` Philip Oakley
2018-04-24 19:10 ` Johannes Schindelin
2018-04-24 21:34 ` Philip Oakley
2018-04-25 0:40 ` Junio C Hamano
2018-04-25 7:17 ` Johannes Schindelin
2018-04-20 22:26 ` [PATCH v3 10/11] technical/shallow: describe why shallow cannot use " Johannes Schindelin
2018-04-20 22:27 ` [PATCH v3 11/11] Remove obsolete script to convert grafts to " Johannes Schindelin
2018-04-21 9:43 ` [PATCH v4 00/11] Deprecate .git/info/grafts Johannes Schindelin
2018-04-21 9:46 ` [PATCH v4 01/11] argv_array: offer to split a string by whitespace Johannes Schindelin
2018-04-24 1:15 ` Junio C Hamano
2018-04-24 2:38 ` Junio C Hamano
2018-04-21 9:46 ` [PATCH v4 02/11] commit: Let the callback of for_each_mergetag return on error Johannes Schindelin
2018-04-21 9:47 ` [PATCH v4 03/11] replace: avoid using die() to indicate a bug Johannes Schindelin
2018-04-21 9:47 ` [PATCH v4 04/11] replace: "libify" create_graft() and callees Johannes Schindelin
2018-04-23 19:08 ` Stefan Beller
2018-04-24 18:51 ` Johannes Schindelin
2018-04-24 19:03 ` Stefan Beller
2018-04-25 7:10 ` Johannes Schindelin
2018-04-21 9:48 ` [PATCH v4 05/11] replace: introduce --convert-graft-file Johannes Schindelin
2018-04-22 3:30 ` Eric Sunshine
2018-04-24 19:04 ` Johannes Schindelin
2018-04-21 9:48 ` [PATCH v4 06/11] Add a test for `git replace --convert-graft-file` Johannes Schindelin
2018-04-21 9:49 ` [PATCH v4 07/11] Deprecate support for .git/info/grafts Johannes Schindelin
2018-04-21 9:49 ` [PATCH v4 08/11] filter-branch: stop suggesting to use grafts Johannes Schindelin
2018-04-21 9:51 ` [PATCH v4 09/11] technical/shallow: describe the relationship with replace refs Johannes Schindelin
2018-04-21 9:56 ` [PATCH v4 10/11] technical/shallow: describe why shallow cannot use " Johannes Schindelin
2018-04-21 9:56 ` [PATCH v4 11/11] Remove obsolete script to convert grafts to " Johannes Schindelin
2018-04-23 19:24 ` [PATCH v4 00/11] Deprecate .git/info/grafts Stefan Beller
2018-04-25 9:53 ` [PATCH v5 " Johannes Schindelin
2018-04-25 9:53 ` [PATCH v5 01/11] argv_array: offer to split a string by whitespace Johannes Schindelin
2018-04-25 9:54 ` [PATCH v5 02/11] commit: Let the callback of for_each_mergetag return on error Johannes Schindelin
2018-04-25 9:54 ` [PATCH v5 03/11] replace: avoid using die() to indicate a bug Johannes Schindelin
2018-04-25 9:54 ` [PATCH v5 04/11] replace: "libify" create_graft() and callees Johannes Schindelin
2018-04-25 9:54 ` [PATCH v5 05/11] replace: introduce --convert-graft-file Johannes Schindelin
2018-04-25 9:54 ` [PATCH v5 06/11] Add a test for `git replace --convert-graft-file` Johannes Schindelin
2018-04-25 9:54 ` [PATCH v5 07/11] Deprecate support for .git/info/grafts Johannes Schindelin
2018-04-25 9:54 ` [PATCH v5 08/11] filter-branch: stop suggesting to use grafts Johannes Schindelin
2018-04-25 9:54 ` [PATCH v5 09/11] technical/shallow: stop referring to grafts Johannes Schindelin
2018-04-25 12:25 ` Jakub Narębski
2018-04-26 9:19 ` Johannes Schindelin
2018-04-25 9:54 ` [PATCH v5 10/11] technical/shallow: describe why shallow cannot use replace refs Johannes Schindelin
2018-04-25 9:54 ` [PATCH v5 11/11] Remove obsolete script to convert grafts to " Johannes Schindelin
2018-04-26 4:10 ` [PATCH v5 00/11] Deprecate .git/info/grafts Junio C Hamano
2018-04-27 21:03 ` Johannes Schindelin
2018-04-27 21:39 ` [PATCH v6 " Johannes Schindelin
2018-04-27 21:39 ` [PATCH v6 01/11] argv_array: offer to split a string by whitespace Johannes Schindelin
2018-04-27 21:39 ` [PATCH v6 02/11] commit: Let the callback of for_each_mergetag return on error Johannes Schindelin
2018-04-27 21:39 ` [PATCH v6 03/11] replace: avoid using die() to indicate a bug Johannes Schindelin
2018-04-27 21:39 ` [PATCH v6 04/11] replace: "libify" create_graft() and callees Johannes Schindelin
2018-04-27 21:39 ` [PATCH v6 05/11] replace: introduce --convert-graft-file Johannes Schindelin
2018-04-27 21:39 ` [PATCH v6 06/11] Add a test for `git replace --convert-graft-file` Johannes Schindelin
2018-04-28 1:25 ` SZEDER Gábor
2018-04-28 13:07 ` Johannes Schindelin
2018-04-27 21:39 ` [PATCH v6 07/11] Deprecate support for .git/info/grafts Johannes Schindelin
2018-04-27 21:39 ` [PATCH v6 08/11] filter-branch: stop suggesting to use grafts Johannes Schindelin
2018-04-27 21:40 ` [PATCH v6 09/11] technical/shallow: stop referring to grafts Johannes Schindelin
2018-04-27 21:40 ` [PATCH v6 10/11] technical/shallow: describe why shallow cannot use replace refs Johannes Schindelin
2018-04-27 21:40 ` [PATCH v6 11/11] Remove obsolete script to convert grafts to " Johannes Schindelin
2018-04-28 9:04 ` Philip Oakley
2018-04-28 13:13 ` Johannes Schindelin
2018-04-28 15:00 ` Stefan Beller
2018-04-28 22:47 ` [Re-send PATCH v7 00/12] Deprecate .git/info/grafts Johannes Schindelin
2018-04-28 22:44 ` [PATCH v7 01/12] argv_array: offer to split a string by whitespace Johannes Schindelin
2018-04-28 22:44 ` [PATCH v7 02/12] commit: Let the callback of for_each_mergetag return on error Johannes Schindelin
2018-04-28 22:44 ` [PATCH v7 03/12] replace: avoid using die() to indicate a bug Johannes Schindelin
2018-04-28 22:44 ` [PATCH v7 04/12] replace: "libify" create_graft() and callees Johannes Schindelin
2018-04-28 22:44 ` [PATCH v7 05/12] replace: prepare create_graft() for converting graft files wholesale Johannes Schindelin
2018-04-28 22:44 ` [PATCH v7 06/12] replace: introduce --convert-graft-file Johannes Schindelin
2018-04-28 22:44 ` [PATCH v7 07/12] Add a test for `git replace --convert-graft-file` Johannes Schindelin
2018-04-28 22:44 ` [PATCH v7 08/12] Deprecate support for .git/info/grafts Johannes Schindelin
2018-11-27 20:12 ` [PATCH] advice: don't pointlessly suggest --convert-graft-file Ævar Arnfjörð Bjarmason
2018-11-28 6:34 ` Junio C Hamano
2018-11-28 9:03 ` Johannes Schindelin
2018-04-28 22:44 ` [PATCH v7 09/12] filter-branch: stop suggesting to use grafts Johannes Schindelin
2018-04-28 22:45 ` [PATCH v7 10/12] technical/shallow: stop referring to grafts Johannes Schindelin
2018-04-28 22:45 ` [PATCH v7 11/12] technical/shallow: describe why shallow cannot use replace refs Johannes Schindelin
2018-04-28 22:45 ` [PATCH v7 12/12] Remove obsolete script to convert grafts to " Johannes Schindelin
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