Hi Rohit
On 06/08/2019 18:36, Rohit Ashiwal wrote:
rebase am already has this flag to "lie" about the committer date
by changing it to the author date. Let's add the same for
interactive machinery.
Signed-off-by: Rohit Ashiwal <rohit.ashiwal...@gmail.com>
---
Documentation/git-rebase.txt | 8 +++-
builtin/rebase.c | 20 +++++++---
sequencer.c | 52 ++++++++++++++++++++++++-
sequencer.h | 1 +
t/t3422-rebase-incompatible-options.sh | 1 -
t/t3433-rebase-options-compatibility.sh | 19 +++++++++
6 files changed, 91 insertions(+), 10 deletions(-)
diff --git a/Documentation/git-rebase.txt b/Documentation/git-rebase.txt
index 85404fea52..83c5bbe06c 100644
--- a/Documentation/git-rebase.txt
+++ b/Documentation/git-rebase.txt
@@ -383,8 +383,12 @@ default is `--no-fork-point`, otherwise the default is
`--fork-point`.
See also INCOMPATIBLE OPTIONS below.
--committer-date-is-author-date::
+ Instead of recording the time the rebased commits are
+ created as the committer date, reuse the author date
+ as the committer date. This implies --force-rebase.
+
--ignore-date::
- These flags are passed to 'git am' to easily change the dates
+ This flag is passed to 'git am' to change the author date
of the rebased commits (see linkgit:git-am[1]).
+
See also INCOMPATIBLE OPTIONS below.
@@ -522,7 +526,6 @@ INCOMPATIBLE OPTIONS
The following options:
- * --committer-date-is-author-date
* --ignore-date
* --whitespace
* -C
@@ -548,6 +551,7 @@ In addition, the following pairs of options are
incompatible:
* --preserve-merges and --signoff
* --preserve-merges and --rebase-merges
* --preserve-merges and --ignore-whitespace
+ * --preserve-merges and --committer-date-is-author-date
* --rebase-merges and --ignore-whitespace
* --rebase-merges and --strategy
* --rebase-merges and --strategy-option
diff --git a/builtin/rebase.c b/builtin/rebase.c
index 3c195ddc73..41fe9ebff8 100644
--- a/builtin/rebase.c
+++ b/builtin/rebase.c
@@ -82,6 +82,7 @@ struct rebase_options {
int ignore_whitespace;
char *gpg_sign_opt;
int autostash;
+ int committer_date_is_author_date;
char *cmd;
int allow_empty_message;
int rebase_merges, rebase_cousins;
@@ -113,6 +114,8 @@ static struct replay_opts get_replay_opts(struct
rebase_options *opts)
replay.allow_empty_message = opts->allow_empty_message;
replay.verbose = opts->flags & REBASE_VERBOSE;
replay.reschedule_failed_exec = opts->reschedule_failed_exec;
+ replay.committer_date_is_author_date =
+ opts->committer_date_is_author_date;
replay.gpg_sign = xstrdup_or_null(opts->gpg_sign_opt);
replay.strategy = opts->strategy;
@@ -532,6 +535,9 @@ int cmd_rebase__interactive(int argc, const char **argv, const char *prefix)
warning(_("--[no-]rebase-cousins has no effect without "
"--rebase-merges"));
+ if (opts.committer_date_is_author_date)
+ opts.flags |= REBASE_FORCE;
+
return !!run_rebase_interactive(&opts, command);
}
@@ -970,6 +976,8 @@ static int run_am(struct rebase_options *opts)
if (opts->ignore_whitespace)
argv_array_push(&am.args, "--ignore-whitespace");
+ if (opts->committer_date_is_author_date)
+ argv_array_push(&opts->git_am_opts,
"--committer-date-is-author-date");
if (opts->action && !strcmp("continue", opts->action)) {
argv_array_push(&am.args, "--resolved");
argv_array_pushf(&am.args, "--resolvemsg=%s", resolvemsg);
@@ -1417,9 +1425,9 @@ int cmd_rebase(int argc, const char **argv, const char
*prefix)
PARSE_OPT_NOARG, NULL, REBASE_DIFFSTAT },
OPT_BOOL(0, "signoff", &options.signoff,
N_("add a Signed-off-by: line to each commit")),
- OPT_PASSTHRU_ARGV(0, "committer-date-is-author-date",
- &options.git_am_opts, NULL,
- N_("passed to 'git am'"), PARSE_OPT_NOARG),
+ OPT_BOOL(0, "committer-date-is-author-date",
+ &options.committer_date_is_author_date,
+ N_("make committer date match author date")),
OPT_PASSTHRU_ARGV(0, "ignore-date", &options.git_am_opts, NULL,
N_("passed to 'git am'"), PARSE_OPT_NOARG),
OPT_PASSTHRU_ARGV('C', NULL, &options.git_am_opts, N_("n"),
@@ -1686,10 +1694,12 @@ int cmd_rebase(int argc, const char **argv, const char
*prefix)
state_dir_base, cmd_live_rebase, buf.buf);
}
+ if (options.committer_date_is_author_date)
+ options.flags |= REBASE_FORCE;
+
for (i = 0; i < options.git_am_opts.argc; i++) {
const char *option = options.git_am_opts.argv[i], *p;
- if (!strcmp(option, "--committer-date-is-author-date") ||
- !strcmp(option, "--ignore-date") ||
+ if (!strcmp(option, "--ignore-date") ||
!strcmp(option, "--whitespace=fix") ||
!strcmp(option, "--whitespace=strip"))
options.flags |= REBASE_FORCE;
diff --git a/sequencer.c b/sequencer.c
index a2d7b0925e..65adf79222 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -147,6 +147,7 @@ static GIT_PATH_FUNC(rebase_path_refs_to_delete,
"rebase-merge/refs-to-delete")
* command-line.
*/
static GIT_PATH_FUNC(rebase_path_gpg_sign_opt, "rebase-merge/gpg_sign_opt")
+static GIT_PATH_FUNC(rebase_path_cdate_is_adate, "rebase-merge/cdate_is_adate")
static GIT_PATH_FUNC(rebase_path_orig_head, "rebase-merge/orig-head")
static GIT_PATH_FUNC(rebase_path_verbose, "rebase-merge/verbose")
static GIT_PATH_FUNC(rebase_path_quiet, "rebase-merge/quiet")
@@ -876,6 +877,17 @@ static char *get_author(const char *message)
return NULL;
}
+/* Returns a "date" string that needs to be free()'d by the caller */
+static char *read_author_date_or_null(void)
+{
+ char *date;
+
+ if (read_author_script(rebase_path_author_script(),
+ NULL, NULL, &date, 0))
+ return NULL;
+ return date;
+}
+
/* Read author-script and return an ident line (author <email> timestamp) */
static const char *read_author_ident(struct strbuf *buf)
{
@@ -904,6 +916,18 @@ static const char *read_author_ident(struct strbuf *buf)
return buf->buf;
}
+static int setenv_committer_date_to_author_date(void)
+{
+ int res = 1;
In the git codebase it is conventional to return -1 for an error
+ char *date = read_author_date_or_null();
+
+ if (date)
+ res = setenv("GIT_COMMITTER_DATE", date, 1);
+
+ free(date);
+ return res;
+}
+
static const char staged_changes_advice[] =
N_("you have staged changes in your working tree\n"
"If these changes are meant to be squashed into the previous commit, run:\n"
@@ -961,6 +985,9 @@ static int run_git_commit(struct repository *r,
{
struct child_process cmd = CHILD_PROCESS_INIT;
+ if (opts->committer_date_is_author_date &&
+ setenv_committer_date_to_author_date())
+ return 1;
-1 for errors please, as seen in the surrounding code.
if ((flags & CREATE_ROOT_COMMIT) && !(flags & AMEND_MSG)) {
struct strbuf msg = STRBUF_INIT, script = STRBUF_INIT;
const char *author = NULL;
@@ -1397,7 +1424,9 @@ static int try_to_commit(struct repository *r,
if (parse_head(r, ¤t_head))
return -1;
-
+ if (!(flags & AMEND_MSG) && opts->committer_date_is_author_date &&
+ setenv_committer_date_to_author_date())
+ return -1;
I think it would be better to handle committer_date_is_author_date in a
single place in this function, not have two implementations one of which
is untested as shown in Stolee's latest test email. This function
receives the author as a string so it should work with the author string
once we have checked for amend.
if (flags & AMEND_MSG) {
const char *exclude_gpgsig[] = { "gpgsig", NULL };
const char *out_enc = get_commit_output_encoding();
@@ -1418,6 +1447,17 @@ static int try_to_commit(struct repository *r,
res = error(_("unable to parse commit author"));
goto out;
}
+ if (opts->committer_date_is_author_date) {
+ char *date;
+ int len = strlen(author);
+ char *idx = memchr(author, '>', len);
what happens if there is a corrupted author without an email? - We end
up with undefined behavior.
+
+ ++idx;
+ date = malloc(author + len - idx);
+ memcpy(date, idx, author + len - idx);
+ setenv("GIT_COMMITTER_DATE", date, 1);
+ free(date);
git has a high level api for manipulation author/committer information
in ident.c, it would be best to use that. In any case code like this
should be using strbuf's rather than malloc
+ }
parents = copy_commit_list(current_head->parents);
extra = read_commit_extra_headers(current_head, exclude_gpgsig);
} else if (current_head) {
Do the committer_date_is_author_date check after the end of this if.
Best Wishes
Phillip
@@ -2538,6 +2578,11 @@ static int read_populate_opts(struct replay_opts *opts)
opts->signoff = 1;
}
+ if (file_exists(rebase_path_cdate_is_adate())) {
+ opts->allow_ff = 0;
+ opts->committer_date_is_author_date = 1;
+ }
+
if (file_exists(rebase_path_reschedule_failed_exec()))
opts->reschedule_failed_exec = 1;
@@ -2620,6 +2665,8 @@ int write_basic_state(struct replay_opts *opts, const char *head_name,
write_file(rebase_path_gpg_sign_opt(), "-S%s\n",
opts->gpg_sign);
if (opts->signoff)
write_file(rebase_path_signoff(), "--signoff\n");
+ if (opts->committer_date_is_author_date)
+ write_file(rebase_path_cdate_is_adate(), "%s", "");
if (opts->reschedule_failed_exec)
write_file(rebase_path_reschedule_failed_exec(), "%s", "");
@@ -3708,7 +3755,8 @@ static int pick_commits(struct repository *r,
setenv(GIT_REFLOG_ACTION, action_name(opts), 0);
if (opts->allow_ff)
assert(!(opts->signoff || opts->no_commit ||
- opts->record_origin || opts->edit));
+ opts->record_origin || opts->edit ||
+ opts->committer_date_is_author_date));
if (read_and_refresh_cache(r, opts))
return -1;
diff --git a/sequencer.h b/sequencer.h
index 0c494b83d4..e6cba468db 100644
--- a/sequencer.h
+++ b/sequencer.h
@@ -43,6 +43,7 @@ struct replay_opts {
int verbose;
int quiet;
int reschedule_failed_exec;
+ int committer_date_is_author_date;
int mainline;
diff --git a/t/t3422-rebase-incompatible-options.sh b/t/t3422-rebase-incompatible-options.sh
index 4342f79eea..7402f7e3da 100755
--- a/t/t3422-rebase-incompatible-options.sh
+++ b/t/t3422-rebase-incompatible-options.sh
@@ -61,7 +61,6 @@ test_rebase_am_only () {
}
test_rebase_am_only --whitespace=fix
-test_rebase_am_only --committer-date-is-author-date
test_rebase_am_only -C4
test_expect_success REBASE_P '--preserve-merges incompatible with --signoff' '
diff --git a/t/t3433-rebase-options-compatibility.sh
b/t/t3433-rebase-options-compatibility.sh
index e617d3150e..ceab48a831 100755
--- a/t/t3433-rebase-options-compatibility.sh
+++ b/t/t3433-rebase-options-compatibility.sh
@@ -7,6 +7,9 @@ test_description='tests to ensure compatibility between am and
interactive backe
. ./test-lib.sh
+GIT_AUTHOR_DATE="1999-04-02T08:03:20+05:30"
+export GIT_AUTHOR_DATE
+
# This is a special case in which both am and interactive backends
# provide the same output. It was done intentionally because
# both the backends fall short of optimal behaviour.
@@ -62,4 +65,20 @@ test_expect_success '--ignore-whitespace works with
interactive backend' '
test_cmp expect file
'
+test_expect_success '--committer-date-is-author-date works with am backend' '
+ git rebase -f HEAD^ &&
+ git rebase --committer-date-is-author-date HEAD^ &&
+ git show HEAD --pretty="format:%at" >authortime &&
+ git show HEAD --pretty="format:%ct" >committertime &&
+ test_cmp authortime committertime
+'
+
+test_expect_success '--committer-date-is-author-date works with interactive
backend' '
+ git rebase -f HEAD^ &&
+ git rebase -i --committer-date-is-author-date HEAD^ &&
+ git show HEAD --pretty="format:%at" >authortime &&
+ git show HEAD --pretty="format:%ct" >committertime &&
+ test_cmp authortime committertime
+'
+
test_done
