Hi Rohit

On 20/08/2019 04:45, Rohit Ashiwal wrote:
I've tries to incorporated all the suggestions.

It is helpful if you can list the changes to remind us all what we said. (as a patch author I find composing that is helpful to remind me if there's anything I've forgotten to address)

Also there are a couple of things that were discussed such as splitting up the author and passing it round as a <name, email, date, tz> tuple and testing a non-default timezone which aren't included - that's fine but it helps if you take a moment to explain why in the cover letter.


Some points:
   - According to v2.0.0's git-am.sh, ignore-date should override
     committer-date-is-author-date. Ergo, we are not barfing out
     when both flags are provided.
   - Should the 'const' qualifier be removed[2]? Since it is leaving
     a false impression that author should not be free()'d.

The author returned by read_author_ident() is owned by the strbuf that you pass to read_author_ident() which is confusing.

Best Wishes

Phillip


[1]: git show v2.0.0:git-am.sh
[2]: https://github.com/git/git/blob/v2.23.0/sequencer.c#L959

Rohit Ashiwal (6):
   rebase -i: add --ignore-whitespace flag
   sequencer: add NULL checks under read_author_script
   rebase -i: support --committer-date-is-author-date
   sequencer: rename amend_author to author_to_rename
   rebase -i: support --ignore-date
   rebase: add --reset-author-date

  Documentation/git-rebase.txt            |  26 +++--
  builtin/rebase.c                        |  53 +++++++---
  sequencer.c                             | 135 ++++++++++++++++++++++--
  sequencer.h                             |   2 +
  t/t3422-rebase-incompatible-options.sh  |   2 -
  t/t3433-rebase-options-compatibility.sh | 100 ++++++++++++++++++
  6 files changed, 289 insertions(+), 29 deletions(-)
  create mode 100755 t/t3433-rebase-options-compatibility.sh

Range-diff:
1:  4cd0aa3084 ! 1:  e82ed8cad5 rebase -i: add --ignore-whitespace flag
     @@ -19,10 +19,13 @@
       default is `--no-fork-point`, otherwise the default is `--fork-point`.
--ignore-whitespace::
     -+ This flag is either passed to the 'git apply' program
     -+ (see linkgit:git-apply[1]), or to 'git merge' program
     -+ (see linkgit:git-merge[1]) as `-Xignore-space-change`,
     -+ depending on which backend is selected by other options.
     ++ Behaves differently depending on which backend is selected.
     +++
     ++'am' backend: When applying a patch, ignore changes in whitespace in
     ++context lines if necessary.
     +++
     ++'interactive' backend: Treat lines with only whitespace changes as
     ++unchanged for the sake of a three-way merge.
      +
       --whitespace=<option>::
      - These flag are passed to the 'git apply' program
     @@ -63,7 +66,7 @@
static struct replay_opts get_replay_opts(const struct rebase_options *opts)
       {
     -+ char *strategy_opts = opts->strategy_opts;
     ++ struct strbuf strategy_buf = STRBUF_INIT;
        struct replay_opts replay = REPLAY_OPTS_INIT;
replay.action = REPLAY_INTERACTIVE_REBASE;
     @@ -71,24 +74,19 @@
        replay.reschedule_failed_exec = opts->reschedule_failed_exec;
        replay.gpg_sign = xstrdup_or_null(opts->gpg_sign_opt);
        replay.strategy = opts->strategy;
     -- if (opts->strategy_opts)
     --         parse_strategy_opts(&replay, opts->strategy_opts);
     -+
     -+ if (opts->ignore_whitespace) {
     -+         struct strbuf buf = STRBUF_INIT;
     -+
     -+         if (strategy_opts)
     -+                 strbuf_addstr(&buf, strategy_opts);
      +
     -+         strbuf_addstr(&buf, " --ignore-space-change");
     -+         free(strategy_opts);
     -+         strategy_opts = strbuf_detach(&buf, NULL);
     -+ }
     -+ if (strategy_opts)
     -+         parse_strategy_opts(&replay, strategy_opts);
     +  if (opts->strategy_opts)
     +-         parse_strategy_opts(&replay, opts->strategy_opts);
     ++         strbuf_addstr(&strategy_buf, opts->strategy_opts);
     ++ if (opts->ignore_whitespace)
     ++         strbuf_addstr(&strategy_buf, " --ignore-space-change");
     ++ if (strategy_buf.len)
     ++         parse_strategy_opts(&replay, strategy_buf.buf);
++ strbuf_release(&strategy_buf);
        return replay;
       }
     +
      @@
        argc = parse_options(argc, argv, prefix, options,
                        builtin_rebase_interactive_usage, PARSE_OPT_KEEP_ARGV0);
2:  e2c0304587 = 2:  209057b361 sequencer: add NULL checks under 
read_author_script
3:  6aed57ae2e ! 3:  a4e6644ef8 rebase -i: support 
--committer-date-is-author-date
     @@ -21,10 +21,12 @@
      +
       --ignore-date::
      - These flags are passed to 'git am' to easily change the dates
     +- of the rebased commits (see linkgit:git-am[1]).
      + This flag is passed to 'git am' to change the author date
     -  of the rebased commits (see linkgit:git-am[1]).
     ++ of each rebased commit (see linkgit:git-am[1]).
       +
       See also INCOMPATIBLE OPTIONS below.
     +
      @@
The following options:
     @@ -62,16 +64,6 @@
        replay.gpg_sign = xstrdup_or_null(opts->gpg_sign_opt);
        replay.strategy = opts->strategy;
-@@
     -          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);
     - }
     -
      @@
if (opts->ignore_whitespace)
     @@ -149,14 +141,14 @@
      +         struct strbuf datebuf = STRBUF_INIT;
      +         char *date = read_author_date_or_null();
      +
     ++         if (!date)
     ++                 return -1;
     ++
      +         strbuf_addf(&datebuf, "@%s", date);
      +         free(date);
      +
      +         date = strbuf_detach(&datebuf, &len);
     -+
     -+         if (len > 1)
     -+                 res = setenv("GIT_COMMITTER_DATE", date, 1);
     -+
     ++         res = setenv("GIT_COMMITTER_DATE", date, 1);
      +         free(date);
      +
      +         if (res)
     @@ -187,7 +179,7 @@
      +         if (!ident.date_begin)
      +                 return error(_("corrupted author without date 
information"));
      +
     -+         strbuf_addf(&date, "@%s",ident.date_begin);
     ++         strbuf_addf(&date, "@%s", ident.date_begin);
      +         setenv("GIT_COMMITTER_DATE", date.buf, 1);
      +         strbuf_release(&date);
      + }
4:  36a0c017c2 = 4:  6ac1885c54 sequencer: rename amend_author to 
author_to_rename
5:  3a4ffeb995 ! 5:  a69749dd67 rebase -i: support --ignore-date
     @@ -16,9 +16,9 @@
--ignore-date::
      - This flag is passed to 'git am' to change the author date
     -- of the rebased commits (see linkgit:git-am[1]).
     -+ Instead of using the given author date, re-set it to the value
     -+ same as committer (current) date. This implies --force-rebase.
     +- 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.
@@ -58,18 +58,6 @@
        replay.gpg_sign = xstrdup_or_null(opts->gpg_sign_opt);
        replay.strategy = opts->strategy;
-@@
     -          warning(_("--[no-]rebase-cousins has no effect without "
     -                    "--rebase-merges"));
     -
     -- if (opts.committer_date_is_author_date)
     -+ if (opts.ignore_date)
     -+         opts.committer_date_is_author_date = 0;
     -+ if (opts.committer_date_is_author_date ||
     -+     opts.ignore_date)
     -          opts.flags |= REBASE_FORCE;
     -
     -  return !!run_rebase_interactive(&opts, command);
      @@
                argv_array_push(&am.args, "--ignore-whitespace");
        if (opts->committer_date_is_author_date)
     @@ -125,18 +113,19 @@
        return buf->buf;
       }
-+static void ignore_author_date(const char **author)
     ++/* 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);
     ++ int len = strlen(author);
      + struct ident_split ident;
      + struct strbuf new_author = STRBUF_INIT;
      +
     -+ split_ident_line(&ident, *author, len);
     ++ split_ident_line(&ident, author, len);
      + len = ident.mail_end - ident.name_begin + 1;
      +
     -+ strbuf_addf(&new_author, "%.*s", len, *author);
     ++ strbuf_addf(&new_author, "%.*s ", len, author);
      + datestamp(&new_author);
     -+ *author = strbuf_detach(&new_author, NULL);
     ++ return strbuf_detach(&new_author, NULL);
      +}
      +
      +static void push_dates(struct child_process *child)
     @@ -160,11 +149,13 @@
      -         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");
     -+                         ignore_author_date(&author);
     ++                         free((void *)author);
     ++                         author = new_author;
      +                 }
                        res = commit_tree(msg.buf, msg.len, cache_tree_oid,
                                          NULL, &root_commit, author,
     @@ -187,7 +178,7 @@
        reset_ident_date();
+ if (opts->ignore_date) {
     -+         ignore_author_date(&author);
     ++         author = ignore_author_date(author);
      +         free(author_to_free);
      +         author_to_free = (char *)author;
      + }
6:  cb81e6c4e5 ! 6:  210d15cca0 rebase: add --author-date-is-committer-date
     @@ -1,6 +1,6 @@
      Author: Rohit Ashiwal <rohit.ashiwal...@gmail.com>
- rebase: add --author-date-is-committer-date
     +    rebase: add --reset-author-date
The previous commit introduced --ignore-date flag to interactive
          rebase, but the name is actually very vague in context of rebase -i
     @@ -16,9 +16,9 @@
        as the committer date. This implies --force-rebase.
--ignore-date::
     -+--author-date-is-committer-date::
     -  Instead of using the given author date, re-set it to the value
     -  same as committer (current) date. This implies --force-rebase.
     ++--reset-author-date::
     +  Instead of using the given author date, reset it to the value
     +  same as the current time. This implies --force-rebase.
       +
diff --git a/builtin/rebase.c b/builtin/rebase.c
     @@ -28,7 +28,7 @@
                OPT_BOOL(0, "committer-date-is-author-date",
                         &options.committer_date_is_author_date,
                         N_("make committer date match author date")),
     -+         OPT_BOOL(0, "author-date-is-committer-date", 
&options.ignore_date,
     ++         OPT_BOOL(0, "reset-author-date", &options.ignore_date,
      +                  "ignore author date and use current date"),
                OPT_BOOL(0, "ignore-date", &options.ignore_date,
                         "ignore author date and use current date"),

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