Hi Rohit
On 20/08/2019 04:45, Rohit Ashiwal wrote:
rebase am already has this flag to "lie" about the author date
by changing it to the committer (current) date. Let's add the same
for interactive machinery.
Signed-off-by: Rohit Ashiwal <rohit.ashiwal265@xxxxxxxxx>
---
Documentation/git-rebase.txt | 6 +--
builtin/rebase.c | 16 ++++---
sequencer.c | 58 ++++++++++++++++++++++++-
sequencer.h | 1 +
t/t3433-rebase-options-compatibility.sh | 16 +++++++
5 files changed, 87 insertions(+), 10 deletions(-)
diff --git a/Documentation/git-rebase.txt b/Documentation/git-rebase.txt
index e7c0eac18c..e7ac9fae0b 100644
--- a/Documentation/git-rebase.txt
+++ b/Documentation/git-rebase.txt
@@ -391,8 +391,8 @@ See also INCOMPATIBLE OPTIONS below.
as the committer date. This implies --force-rebase.
--ignore-date::
- This flag is passed to 'git am' to change the author date
- of each rebased commit (see linkgit:git-am[1]).
+ Instead of using the given author date, reset it to the value
+ same as the current time. This implies --force-rebase.
+
See also INCOMPATIBLE OPTIONS below.
@@ -529,7 +529,6 @@ INCOMPATIBLE OPTIONS
The following options:
- * --ignore-date
* --whitespace
* -C
@@ -555,6 +554,7 @@ In addition, the following pairs of options are incompatible:
* --preserve-merges and --rebase-merges
* --preserve-merges and --ignore-whitespace
* --preserve-merges and --committer-date-is-author-date
+ * --preserve-merges and --ignore-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 656bc7d7e9..a63531ee90 100644
--- a/builtin/rebase.c
+++ b/builtin/rebase.c
@@ -83,6 +83,7 @@ struct rebase_options {
char *gpg_sign_opt;
int autostash;
int committer_date_is_author_date;
+ int ignore_date;
char *cmd;
int allow_empty_message;
int rebase_merges, rebase_cousins;
@@ -117,6 +118,7 @@ static struct replay_opts get_replay_opts(const struct rebase_options *opts)
replay.reschedule_failed_exec = opts->reschedule_failed_exec;
replay.committer_date_is_author_date =
opts->committer_date_is_author_date;
+ replay.ignore_date = opts->ignore_date;
replay.gpg_sign = xstrdup_or_null(opts->gpg_sign_opt);
replay.strategy = opts->strategy;
@@ -981,6 +983,8 @@ static int run_am(struct rebase_options *opts)
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->ignore_date)
+ argv_array_push(&opts->git_am_opts, "--ignore-date");
if (opts->action && !strcmp("continue", opts->action)) {
argv_array_push(&am.args, "--resolved");
argv_array_pushf(&am.args, "--resolvemsg=%s", resolvemsg);
@@ -1427,8 +1431,8 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
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_BOOL(0, "ignore-date", &options.ignore_date,
+ "ignore author date and use current date"),
OPT_PASSTHRU_ARGV('C', NULL, &options.git_am_opts, N_("n"),
N_("passed to 'git apply'"), 0),
OPT_BOOL(0, "ignore-whitespace", &options.ignore_whitespace,
@@ -1697,13 +1701,15 @@ 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)
+ if (options.ignore_date)
+ options.committer_date_is_author_date = 0;
+ if (options.committer_date_is_author_date ||
+ options.ignore_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, "--ignore-date") ||
- !strcmp(option, "--whitespace=fix") ||
+ if (!strcmp(option, "--whitespace=fix") ||
!strcmp(option, "--whitespace=strip"))
options.flags |= REBASE_FORCE;
else if (skip_prefix(option, "-C", &p)) {
diff --git a/sequencer.c b/sequencer.c
index 8f7b984333..f5a9590844 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -148,6 +148,7 @@ static GIT_PATH_FUNC(rebase_path_refs_to_delete, "rebase-merge/refs-to-delete")
*/
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_ignore_date, "rebase-merge/ignore_date")
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")
@@ -919,6 +920,32 @@ static const char *read_author_ident(struct strbuf *buf)
return buf->buf;
}
+/* Construct a free()able author string with current time as the author date */
+static char *ignore_author_date(const char *author)
+{
+ int len = strlen(author);
+ struct ident_split ident;
+ struct strbuf new_author = STRBUF_INIT;
+
+ split_ident_line(&ident, author, len);
You need to check the return value whenever you call split_ident_line().
In this case doing so would avoid using NULL pointers below if the
author is corrupted.
+ len = ident.mail_end - ident.name_begin + 1;
+
+ strbuf_addf(&new_author, "%.*s ", len, author);
+ datestamp(&new_author);
+ return strbuf_detach(&new_author, NULL);
+}
I think this is clearer now it returns the new author
+
+static void push_dates(struct child_process *child)
+{
+ time_t now = time(NULL);
+ struct strbuf date = STRBUF_INIT;
+
+ strbuf_addf(&date, "@%"PRIuMAX, (uintmax_t)now);
+ argv_array_pushf(&child->args, "--date=%s", date.buf);
+ argv_array_pushf(&child->env_array, "GIT_COMMITTER_DATE=%s", date.buf);
Looking at the code in builtin/am.c it is quite clear how it handles the
combination of --ignore-date and --committer-date-is-author date is it
sets GIT_COMMITTER_DATE in a single place. Here we've got two separate
pieces of code one from patch 3 the other added here. This
implementation differs from the one in builtin/am.c if --ignore-date is
given when GIT_COMMITTER_DATE is set in the environment and
--committer-date-is-author-date is not given.
+ strbuf_release(&date);
+}
+
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"
@@ -1020,10 +1047,20 @@ static int run_git_commit(struct repository *r,
if (res <= 0)
res = error_errno(_("could not read '%s'"), defmsg);
- else
+ else {
+ if (opts->ignore_date) {
+ char *new_author = ignore_author_date(author);
+ if (!author)
+ BUG("ignore-date can only be used with "
+ "rebase, which must set the author "
+ "before committing the tree");
+ free((void *)author);
+ author = new_author;
+ }
res = commit_tree(msg.buf, msg.len, cache_tree_oid,
NULL, &root_commit, author,
opts->gpg_sign);
+ }
strbuf_release(&msg);
strbuf_release(&script);
@@ -1053,6 +1090,8 @@ static int run_git_commit(struct repository *r,
argv_array_push(&cmd.args, "--amend");
if (opts->gpg_sign)
argv_array_pushf(&cmd.args, "-S%s", opts->gpg_sign);
+ if (opts->ignore_date)
+ push_dates(&cmd);
if (defmsg)
argv_array_pushl(&cmd.args, "-F", defmsg, NULL);
else if (!(flags & EDIT_MSG))
@@ -1515,6 +1554,11 @@ static int try_to_commit(struct repository *r,
reset_ident_date();
+ if (opts->ignore_date) {
+ author = ignore_author_date(author);
+ free(author_to_free);
+ author_to_free = (char *)author;
+ }
The memory handling is much clearer now
if (commit_tree_extended(msg->buf, msg->len, &tree, parents,
oid, author, opts->gpg_sign, extra)) {
res = error(_("failed to write commit object"));
@@ -2592,6 +2636,11 @@ static int read_populate_opts(struct replay_opts *opts)
opts->committer_date_is_author_date = 1;
}
+ if (file_exists(rebase_path_ignore_date())) {
+ opts->allow_ff = 0;
+ opts->ignore_date = 1;
+ }
+
if (file_exists(rebase_path_reschedule_failed_exec()))
opts->reschedule_failed_exec = 1;
@@ -2676,6 +2725,8 @@ int write_basic_state(struct replay_opts *opts, const char *head_name,
write_file(rebase_path_signoff(), "--signoff\n");
if (opts->committer_date_is_author_date)
write_file(rebase_path_cdate_is_adate(), "%s", "");
+ if (opts->ignore_date)
+ write_file(rebase_path_ignore_date(), "%s", "");
if (opts->reschedule_failed_exec)
write_file(rebase_path_reschedule_failed_exec(), "%s", "");
@@ -3601,6 +3652,8 @@ static int do_merge(struct repository *r,
argv_array_push(&cmd.args, git_path_merge_msg(r));
if (opts->gpg_sign)
argv_array_push(&cmd.args, opts->gpg_sign);
+ if (opts->ignore_date)
+ push_dates(&cmd);
/* Add the tips to be merged */
for (j = to_merge; j; j = j->next)
@@ -3874,7 +3927,8 @@ static int pick_commits(struct repository *r,
if (opts->allow_ff)
assert(!(opts->signoff || opts->no_commit ||
opts->record_origin || opts->edit ||
- opts->committer_date_is_author_date));
+ opts->committer_date_is_author_date ||
+ opts->ignore_date));
if (read_and_refresh_cache(r, opts))
return -1;
diff --git a/sequencer.h b/sequencer.h
index e3881e9275..bf5a79afdb 100644
--- a/sequencer.h
+++ b/sequencer.h
@@ -44,6 +44,7 @@ struct replay_opts {
int quiet;
int reschedule_failed_exec;
int committer_date_is_author_date;
+ int ignore_date;
int mainline;
diff --git a/t/t3433-rebase-options-compatibility.sh b/t/t3433-rebase-options-compatibility.sh
index b2419a2b75..c060fcd10b 100755
--- a/t/t3433-rebase-options-compatibility.sh
+++ b/t/t3433-rebase-options-compatibility.sh
@@ -81,4 +81,20 @@ test_expect_success '--committer-date-is-author-date works with interactive back
test_cmp authortime committertime
'
+# Checking for +0000 in author time is enough since default
+# timezone is UTC, but the timezone used while committing
+# sets to +0530.
I'm still worried that this will hide some breakage in the future. Can
we add a test for rebase -r as well to check that code please.
Best Wishes
Phillip
+test_expect_success '--ignore-date works with am backend' '
+ git commit --amend --date="$GIT_AUTHOR_DATE" &&
+ git rebase --ignore-date HEAD^ &&
+ git show HEAD --pretty="format:%ai" >authortime &&
+ grep "+0000" authortime
+'
+
+test_expect_success '--ignore-date works with interactive backend' '
+ git commit --amend --date="$GIT_AUTHOR_DATE" &&
+ git rebase --ignore-date -i HEAD^ &&
+ git show HEAD --pretty="format:%ai" >authortime &&
+ grep "+0000" authortime
+'
test_done
