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From: Johannes Schindelin <Johannes.Schindelin@gmx.de>
To: Phillip Wood <phillip.wood@dunelm.org.uk>
Cc: Johannes Schindelin via GitGitGadget <gitgitgadget@gmail.com>,
	git@vger.kernel.org, Junio C Hamano <gitster@pobox.com>
Subject: Re: [PATCH 1/1] rebase: really just passthru the `git am` options
Date: Wed, 14 Nov 2018 15:22:26 +0100 (STD)	[thread overview]
Message-ID: <nycvar.QRO.7.76.6.1811141508130.39@tvgsbejvaqbjf.bet> (raw)
In-Reply-To: <1b8461d1-6cb7-6622-94d2-44c27623236d@talktalk.net>

Hi Phillip,

On Tue, 13 Nov 2018, Phillip Wood wrote:

> On 13/11/2018 19:21, Johannes Schindelin wrote:
> > Hi Phillip,
> > 
> > On Tue, 13 Nov 2018, Phillip Wood wrote:
> > 
> > > Thanks for looking at this. Unfortunately using OPT_PASSTHRU_ARGV seems to
> > > break the error reporting
> > >
> > > Running
> > >    bin/wrappers/git rebase --onto @^^^^ @^^ -Cbad
> > >
> > > Gives
> > >    git encountered an error while preparing the patches to replay
> > >    these revisions:
> > >
> > >
> > > 67f673aa4a580b9e407b1ca505abf1f50510ec47...7c3e01a708856885e60bf4051586970e65dd326c
> > >
> > >    As a result, git cannot rebase them.
> > >
> 
> git 2.19.1 gives
> 
> First, rewinding head to replay your work on top of it...
> Applying: Ninth batch for 2.20
> error: switch `C' expects a numerical value
> 
> So it has a clear message as to what the error is, this patch regresses that.
> It would be better if rebase detected the error before starting though.

I agree that that would make most sense: why start something when you can
know that it will fail later...

Let me try to add that test case that Junio wanted, and some early error
handling.

> > > If I do
> > >
> > >    bin/wrappers/git rebase @^^ -Cbad
> > >
> > > I get no error, it just tells me that it does not need to rebase (which is
> > > true)
> > 
> > Hmm. Isn't this the same behavior as with the scripted version?
> 
> Ah you're right the script does not check if the option argument is valid.
> 
> > Also: are
> > we sure that we want to allow options to come *after* the `<upstream>`
> > argument?
> 
> Maybe not but the scripted version does. I'm not sure if that is a good idea
> or not.

That behavior was never documented, though, was it?

Ciao,
Dscho

> 
> Best Wishes
> 
> Phillip
> 
> > Ciao,
> > Dscho
> > 
> > > Best Wishes
> > >
> > > Phillip
> > >
> > >
> > > On 13/11/2018 12:38, Johannes Schindelin via GitGitGadget wrote:
> > > > From: Johannes Schindelin <johannes.schindelin@gmx.de>
> > > >
> > > > Currently, we parse the options intended for `git am` as if we wanted to
> > > > handle them in `git rebase`, and then reconstruct them painstakingly to
> > > > define the `git_am_opt` variable.
> > > >
> > > > However, there is a much better way (that I was unaware of, at the time
> > > > when I mentored Pratik to implement these options): OPT_PASSTHRU_ARGV.
> > > > It is intended for exactly this use case, where command-line options
> > > > want to be parsed into a separate `argv_array`.
> > > >
> > > > Let's use this feature.
> > > >
> > > > Incidentally, this also allows us to address a bug discovered by Phillip
> > > > Wood, where the built-in rebase failed to understand that the `-C`
> > > > option takes an optional argument.
> > > >
> > > > Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
> > > > ---
> > > >    builtin/rebase.c | 98
> > > >    +++++++++++++++++-------------------------------
> > > >    1 file changed, 35 insertions(+), 63 deletions(-)
> > > >
> > > > diff --git a/builtin/rebase.c b/builtin/rebase.c
> > > > index 0ee06aa363..96ffa80b71 100644
> > > > --- a/builtin/rebase.c
> > > > +++ b/builtin/rebase.c
> > > > @@ -87,7 +87,7 @@ struct rebase_options {
> > > >      REBASE_FORCE = 1<<3,
> > > >      REBASE_INTERACTIVE_EXPLICIT = 1<<4,
> > > >    	} flags;
> > > > -	struct strbuf git_am_opt;
> > > > +	struct argv_array git_am_opts;
> > > >     const char *action;
> > > >     int signoff;
> > > >     int allow_rerere_autoupdate;
> > > > @@ -339,7 +339,7 @@ N_("Resolve all conflicts manually, mark them as
> > > > resolved with\n"
> > > >    static int run_specific_rebase(struct rebase_options *opts)
> > > >    {
> > > >    	const char *argv[] = { NULL, NULL };
> > > > -	struct strbuf script_snippet = STRBUF_INIT;
> > > > +	struct strbuf script_snippet = STRBUF_INIT, buf = STRBUF_INIT;
> > > >     int status;
> > > >     const char *backend, *backend_func;
> > > >    @@ -433,7 +433,9 @@ static int run_specific_rebase(struct
> > > > rebase_options
> > > > *opts)
> > > >     	oid_to_hex(&opts->restrict_revision->object.oid) : NULL);
> > > >     add_var(&script_snippet, "GIT_QUIET",
> > > >    		opts->flags & REBASE_NO_QUIET ? "" : "t");
> > > > -	add_var(&script_snippet, "git_am_opt", opts->git_am_opt.buf);
> > > > +	sq_quote_argv_pretty(&buf, opts->git_am_opts.argv);
> > > > +	add_var(&script_snippet, "git_am_opt", buf.buf);
> > > > +	strbuf_release(&buf);
> > > >     add_var(&script_snippet, "verbose",
> > > >     	opts->flags & REBASE_VERBOSE ? "t" : "");
> > > >    	add_var(&script_snippet, "diffstat",
> > > > @@ -756,7 +758,7 @@ int cmd_rebase(int argc, const char **argv, const
> > > > char
> > > > *prefix)
> > > >     struct rebase_options options = {
> > > >      .type = REBASE_UNSPECIFIED,
> > > >      .flags = REBASE_NO_QUIET,
> > > > -		.git_am_opt = STRBUF_INIT,
> > > > +		.git_am_opts = ARGV_ARRAY_INIT,
> > > >      .allow_rerere_autoupdate  = -1,
> > > >      .allow_empty_message = 1,
> > > >      .git_format_patch_opt = STRBUF_INIT,
> > > > @@ -777,12 +779,7 @@ int cmd_rebase(int argc, const char **argv, const
> > > > char *prefix)
> > > >      ACTION_EDIT_TODO,
> > > >      ACTION_SHOW_CURRENT_PATCH,
> > > >    	} action = NO_ACTION;
> > > > -	int committer_date_is_author_date = 0;
> > > > -	int ignore_date = 0;
> > > > -	int ignore_whitespace = 0;
> > > >    	const char *gpg_sign = NULL;
> > > > -	int opt_c = -1;
> > > > -	struct string_list whitespace = STRING_LIST_INIT_NODUP;
> > > >     struct string_list exec = STRING_LIST_INIT_NODUP;
> > > >     const char *rebase_merges = NULL;
> > > >     int fork_point = -1;
> > > > @@ -804,15 +801,20 @@ int cmd_rebase(int argc, const char **argv, const
> > > > char *prefix)
> > > >      {OPTION_NEGBIT, 'n', "no-stat", &options.flags, NULL,
> > > >       N_("do not show diffstat of what changed upstream"),
> > > >       PARSE_OPT_NOARG, NULL, REBASE_DIFFSTAT },
> > > > -		OPT_BOOL(0, "ignore-whitespace", &ignore_whitespace,
> > > > -			 N_("passed to 'git apply'")),
> > > >      OPT_BOOL(0, "signoff", &options.signoff,
> > > >    			 N_("add a Signed-off-by: line to each
> > > > commit")),
> > > > -		OPT_BOOL(0, "committer-date-is-author-date",
> > > > -			 &committer_date_is_author_date,
> > > > -			 N_("passed to 'git am'")),
> > > > -		OPT_BOOL(0, "ignore-date", &ignore_date,
> > > > -			 N_("passed to 'git am'")),
> > > > +		OPT_PASSTHRU_ARGV(0, "ignore-whitespace",
> > > > &options.git_am_opts,
> > > > +				  NULL, N_("passed to 'git am'"),
> > > > +				  PARSE_OPT_NOARG),
> > > > +		OPT_PASSTHRU_ARGV(0, "committer-date-is-author-date",
> > > > +				  &options.git_am_opts, NULL,
> > > > +				  N_("passed to 'git am'"),
> > > > PARSE_OPT_NOARG),
> > > > +		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"),
> > > > +				  N_("passed to 'git apply'"), 0),
> > > > +		OPT_PASSTHRU_ARGV(0, "whitespace", &options.git_am_opts,
> > > > +				  N_("action"), N_("passed to 'git apply'"),
> > > > 0),
> > > >      OPT_BIT('f', "force-rebase", &options.flags,
> > > >       N_("cherry-pick all commits, even if unchanged"),
> > > >       REBASE_FORCE),
> > > > @@ -856,10 +858,6 @@ int cmd_rebase(int argc, const char **argv, const
> > > > char *prefix)
> > > >      { OPTION_STRING, 'S', "gpg-sign", &gpg_sign, N_("key-id"),
> > > >       N_("GPG-sign commits"),
> > > >       PARSE_OPT_OPTARG, NULL, (intptr_t) "" },
> > > > -		OPT_STRING_LIST(0, "whitespace", &whitespace,
> > > > -				N_("whitespace"), N_("passed to 'git
> > > > apply'")),
> > > > -		OPT_SET_INT('C', NULL, &opt_c, N_("passed to 'git apply'"),
> > > > -			    REBASE_AM),
> > > >      OPT_BOOL(0, "autostash", &options.autostash,
> > > >        	 N_("automatically stash/stash pop before and after")),
> > > >    		OPT_STRING_LIST('x', "exec", &exec, N_("exec"),
> > > > @@ -884,6 +882,7 @@ int cmd_rebase(int argc, const char **argv, const
> > > > char
> > > > *prefix)
> > > >      	 N_("rebase all reachable commits up to the root(s)")),
> > > >     	OPT_END(),
> > > >    	};
> > > > +	int i;
> > > >    
> > > >     /*
> > > >    	 * NEEDSWORK: Once the builtin rebase has been tested enough
> > > > @@ -1064,22 +1063,17 @@ int cmd_rebase(int argc, const char **argv,
> > > > const
> > > > char *prefix)
> > > >     	    state_dir_base, cmd_live_rebase, buf.buf);
> > > >    }
> > > >    -	if (!(options.flags & REBASE_NO_QUIET))
> > > > -		strbuf_addstr(&options.git_am_opt, " -q");
> > > > -
> > > > -	if (committer_date_is_author_date) {
> > > > -		strbuf_addstr(&options.git_am_opt,
> > > > -			      " --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];
> > > > +		if (!strcmp(option, "--committer-date-is-author-date") ||
> > > > +		    !strcmp(option, "--ignore-date") ||
> > > > +		    !strcmp(option, "--whitespace=fix") ||
> > > > +		    !strcmp(option, "--whitespace=strip"))
> > > > +			options.flags |= REBASE_FORCE;
> > > >    }
> > > >    -	if (ignore_whitespace)
> > > > -		strbuf_addstr(&options.git_am_opt, " --ignore-whitespace");
> > > > -
> > > > -	if (ignore_date) {
> > > > -		strbuf_addstr(&options.git_am_opt, " --ignore-date");
> > > > -		options.flags |= REBASE_FORCE;
> > > > -	}
> > > > +	if (!(options.flags & REBASE_NO_QUIET))
> > > > +		argv_array_push(&options.git_am_opts, "-q");
> > > >    
> > > >     if (options.keep_empty)
> > > >    		imply_interactive(&options, "--keep-empty");
> > > > @@ -1089,23 +1083,6 @@ int cmd_rebase(int argc, const char **argv, const
> > > > char *prefix)
> > > >     	options.gpg_sign_opt = xstrfmt("-S%s", gpg_sign);
> > > >    }
> > > >    -	if (opt_c >= 0)
> > > > -		strbuf_addf(&options.git_am_opt, " -C%d", opt_c);
> > > > -
> > > > -	if (whitespace.nr) {
> > > > -		int i;
> > > > -
> > > > -		for (i = 0; i < whitespace.nr; i++) {
> > > > -			const char *item = whitespace.items[i].string;
> > > > -
> > > > -			strbuf_addf(&options.git_am_opt, " --whitespace=%s",
> > > > -				    item);
> > > > -
> > > > -			if ((!strcmp(item, "fix")) || (!strcmp(item,
> > > > "strip")))
> > > > -				options.flags |= REBASE_FORCE;
> > > > -		}
> > > > -	}
> > > > -
> > > >     if (exec.nr) {
> > > >      int i;
> > > >    @@ -1181,23 +1158,18 @@ int cmd_rebase(int argc, const char **argv,
> > > > const char *prefix)
> > > >     	break;
> > > >    }
> > > >    -	if (options.git_am_opt.len) {
> > > > -		const char *p;
> > > > -
> > > > +	if (options.git_am_opts.argc) {
> > > >    		/* all am options except -q are compatible only with
> > > > --am */
> > > > -		strbuf_reset(&buf);
> > > > -		strbuf_addbuf(&buf, &options.git_am_opt);
> > > > -		strbuf_addch(&buf, ' ');
> > > > -		while ((p = strstr(buf.buf, " -q ")))
> > > > -			strbuf_splice(&buf, p - buf.buf, 4, " ", 1);
> > > > -		strbuf_trim(&buf);
> > > > +		for (i = options.git_am_opts.argc - 1; i >= 0; i--)
> > > > +			if (strcmp(options.git_am_opts.argv[i], "-q"))
> > > > +				break;
> > > >    -		if (is_interactive(&options) && buf.len)
> > > > +		if (is_interactive(&options) && i >= 0)
> > > >       die(_("error: cannot combine interactive options "
> > > >             "(--interactive, --exec, --rebase-merges, "
> > > >             "--preserve-merges, --keep-empty, --root + "
> > > >             "--onto) with am options (%s)"), buf.buf);
> > > > -		if (options.type == REBASE_MERGE && buf.len)
> > > > +		if (options.type == REBASE_MERGE && i >= 0)
> > > >       die(_("error: cannot combine merge options (--merge, "
> > > >             "--strategy, --strategy-option) with am options "
> > > >             "(%s)"), buf.buf);
> > > > @@ -1207,7 +1179,7 @@ int cmd_rebase(int argc, const char **argv, const
> > > > char *prefix)
> > > >      if (options.type == REBASE_PRESERVE_MERGES)
> > > >       die("cannot combine '--signoff' with "
> > > >    			    "'--preserve-merges'");
> > > > -		strbuf_addstr(&options.git_am_opt, " --signoff");
> > > > +		argv_array_push(&options.git_am_opts, "--signoff");
> > > >     	options.flags |= REBASE_FORCE;
> > > >     }
> > > >    
> > > >
> > >
> > >
> 
> 
> 

  parent reply	other threads:[~2018-11-14 14:22 UTC|newest]

Thread overview: 97+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-13 12:38 [PATCH 0/1] rebase: understand -C again, refactor Johannes Schindelin via GitGitGadget
2018-11-13 12:38 ` [PATCH 1/1] rebase: really just passthru the `git am` options Johannes Schindelin via GitGitGadget
2018-11-13 13:05   ` Junio C Hamano
2018-11-13 15:05   ` Phillip Wood
2018-11-13 19:21     ` Johannes Schindelin
2018-11-13 19:58       ` Phillip Wood
2018-11-13 21:50         ` rebase-in-C stability for 2.20 Ævar Arnfjörð Bjarmason
2018-11-14  0:07           ` Stefan Beller
2018-11-14  9:01             ` [PATCH 0/2] rebase.useBuiltin doc & test mode Ævar Arnfjörð Bjarmason
2018-11-14 14:07               ` Johannes Schindelin
2018-11-14  9:01             ` [PATCH 1/2] rebase doc: document rebase.useBuiltin Ævar Arnfjörð Bjarmason
2018-11-14  9:01             ` [PATCH 2/2] tests: add a special setup where rebase.useBuiltin is off Ævar Arnfjörð Bjarmason
2018-11-14  0:36           ` rebase-in-C stability for 2.20 Elijah Newren
2018-11-14  3:39           ` Junio C Hamano
2018-11-24 20:54           ` [ANNOUNCE] Git v2.20.0-rc1 Ævar Arnfjörð Bjarmason
2018-11-25  1:00             ` Junio C Hamano
2018-11-26  6:10               ` [PATCH] rebase: mark the C reimplementation as an experimental opt-in feature (was Re: [ANNOUNCE] Git v2.20.0-rc1) Junio C Hamano
2018-11-28  4:31                 ` Jonathan Nieder
2018-11-28  9:23                   ` Johannes Schindelin
2018-11-28 12:21                     ` Ævar Arnfjörð Bjarmason
2018-11-29  4:58                       ` Junio C Hamano
2018-11-29 14:17                     ` Johannes Schindelin
2018-11-29 14:30                       ` Ian Jackson
2018-11-29 15:39                         ` Johannes Schindelin
2018-11-29 15:50                           ` Ian Jackson
2018-11-29 16:14                             ` Johannes Schindelin
2018-11-29 16:26                               ` Ian Jackson
2018-11-26 22:52             ` [ANNOUNCE] Git v2.20.0-rc1 Johannes Schindelin
2018-11-26 23:47               ` Johannes Schindelin
2018-11-28  4:07                 ` Junio C Hamano
2018-11-28  9:30                   ` Johannes Schindelin
2018-11-14 14:22         ` Johannes Schindelin [this message]
2018-11-14  7:29 ` [PATCH 0/1] rebase: understand -C again, refactor Jeff King
2018-11-14 14:28   ` Johannes Schindelin
2018-11-14 16:25 ` [PATCH v2 0/2] " Johannes Schindelin via GitGitGadget
2018-11-14 16:25   ` [PATCH v2 1/2] rebase: really just passthru the `git am` options Johannes Schindelin via GitGitGadget
2018-11-14 16:25   ` [PATCH v2 2/2] rebase: validate -C<n> and --whitespace=<mode> parameters early Johannes Schindelin via GitGitGadget
2018-11-14 16:37     ` Phillip Wood
2018-11-14 21:24       ` Johannes Schindelin
2018-11-19 12:38     ` Ævar Arnfjörð Bjarmason
2018-11-19 21:37       ` Git Test Coverage Report (v2.20.0-rc0) Ævar Arnfjörð Bjarmason
2018-11-20 10:58       ` [PATCH v2 2/2] rebase: validate -C<n> and --whitespace=<mode> parameters early Johannes Schindelin
2018-11-20 11:42         ` [PATCH] rebase: mark a test as failing with rebase.useBuiltin=false Ævar Arnfjörð Bjarmason
2018-11-20 19:55           ` Johannes Schindelin
  -- strict thread matches above, loose matches on Subject: below --
2018-11-19  2:54 Git Test Coverage Report (v2.20.0-rc0) Derrick Stolee
2018-11-19 15:40 ` Derrick Stolee
2018-11-19 16:21   ` Jeff King
2018-11-19 18:44     ` Jeff King
2018-11-19 19:00   ` Ben Peart
2018-11-19 21:06     ` Derrick Stolee
2018-11-20 11:34   ` Jeff King
2018-11-20 12:17     ` Derrick Stolee
2018-11-20 12:40       ` Jeff King
2018-11-19 18:33 ` Ævar Arnfjörð Bjarmason
2018-11-19 18:51   ` [PATCH] tests: add a special setup where rebase.useBuiltin is off (Re: Git Test Coverage Report (v2.20.0-rc0)) Jonathan Nieder
2018-11-19 21:03     ` Ævar Arnfjörð Bjarmason
2018-11-19 19:10   ` Git Test Coverage Report (v2.20.0-rc0) Derrick Stolee
2018-11-19 19:39     ` Ævar Arnfjörð Bjarmason
2018-11-19 19:44       ` Derrick Stolee
2018-11-19 21:31   ` Derrick Stolee
2018-11-20 20:43     ` Johannes Schindelin
2018-11-21 15:20 [ANNOUNCE] Git v2.20.0-rc1 Junio C Hamano
2018-11-22 15:58 ` Ævar Arnfjörð Bjarmason
2018-11-22 19:27   ` Eric Sunshine
2018-11-22 21:12     ` [PATCH 0/2] format-patch: pre-2.20 range-diff regression fix Ævar Arnfjörð Bjarmason
2018-11-22 21:12     ` [PATCH 1/2] format-patch: add a more exhaustive --range-diff test Ævar Arnfjörð Bjarmason
2018-11-24  4:14       ` Junio C Hamano
2018-11-24 11:45         ` Ævar Arnfjörð Bjarmason
2018-11-22 21:12     ` [PATCH 2/2] format-patch: don't include --stat with --range-diff output Ævar Arnfjörð Bjarmason
2018-11-24  2:26       ` Junio C Hamano
2018-11-24  4:17         ` Junio C Hamano
2018-11-28 20:18           ` [PATCH 0/2] format-patch: fix root cause of recent regression Ævar Arnfjörð Bjarmason
2018-11-28 20:18           ` [PATCH 1/2] format-patch: add test for --range-diff diff output Ævar Arnfjörð Bjarmason
2018-11-28 20:18           ` [PATCH 2/2] format-patch: allow for independent diff & range-diff options Ævar Arnfjörð Bjarmason
2018-11-29  2:59             ` Junio C Hamano
2018-11-29 10:07             ` Johannes Schindelin
2018-11-29 10:30               ` Ævar Arnfjörð Bjarmason
2018-11-29 12:12                 ` Johannes Schindelin
2018-11-29 14:35                   ` Ævar Arnfjörð Bjarmason
2018-11-29 15:41                     ` Johannes Schindelin
2018-11-29 16:03                       ` Ævar Arnfjörð Bjarmason
2018-11-29 19:03                         ` Johannes Schindelin
2018-11-30  2:30                         ` Junio C Hamano
2018-11-30  4:27                           ` [PATCH] format-patch: do not let its diff-options affect --range-diff (was Re: [PATCH 2/2] format-patch: allow for independent diff & range-diff options) Junio C Hamano
2018-11-30  8:57                             ` Junio C Hamano
2018-11-30  9:24                               ` Ævar Arnfjörð Bjarmason
2018-11-30 12:32                               ` Johannes Schindelin
2018-11-30  9:31                             ` Eric Sunshine
2018-12-03 13:27                               ` Martin Ågren
2018-12-03 20:07                                 ` [PATCH v2] range-diff: always pass at least minimal diff options Martin Ågren
2018-12-03 21:21                                   ` [PATCH v3] " Eric Sunshine
2018-12-04  1:35                                     ` Junio C Hamano
2018-12-04  5:40                                     ` Martin Ågren
2018-11-30  9:58                         ` [PATCH 2/2] format-patch: allow for independent diff & range-diff options Eric Sunshine
2018-11-26  7:35 ` [ANNOUNCE] Git v2.20.0-rc1 Junio C Hamano
2018-11-26 15:41   ` Elijah Newren
2018-11-27  0:40     ` Junio C Hamano

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    --in-reply-to=nycvar.QRO.7.76.6.1811141508130.39@tvgsbejvaqbjf.bet \
    --to=johannes.schindelin@gmx.de \
    --cc=git@vger.kernel.org \
    --cc=gitgitgadget@gmail.com \
    --cc=gitster@pobox.com \
    --cc=phillip.wood@dunelm.org.uk \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

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