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Re: [PATCH v2] sequencer: advise if skipping cherry-picked commit

From
Junio C Hamano <gitster@pobox.com>
Date
Aug 10, 2021, 22:33 UTC
Message-ID
<xmqqwnotaq0e.fsf@gitster.g>
In-Reply-To
<496da0b17476011b4ef4dde31593afc7572246eb.1628623058.git.steadmon@google.com>
Josh Steadmon <steadmon@google.com> writes:
> +	skippedCherryPicks::
> +		Shown when linkgit:git-rebase[1] skips a commit that has already
> +		been cherry-picked onto the upstream branch.
Makes sense.
> +	[ADVICE_SKIPPED_CHERRY_PICKS]			= { "skippedCherryPicks", 1},

No need to resend to only fix this, but I'll add SP after "1" to match surrounding lines while queuing the patch.

Show 22 quoted lines
> @@ -5149,8 +5150,13 @@ static int make_script_with_merges(struct pretty_print_context *pp,
>  		oidset_insert(&interesting, &commit->object.oid);
>  
>  		is_empty = is_original_commit_empty(commit);
> -		if (!is_empty && (commit->object.flags & PATCHSAME))
> +		if (!is_empty && (commit->object.flags & PATCHSAME)) {
> +			advise_if_enabled(ADVICE_SKIPPED_CHERRY_PICKS,
> +					_("skipped previously applied commit %s"),
> +					short_commit_name(commit));
> +			skipped_commit = 1;
>  			continue;
> +		}
>  		if (is_empty && !keep_empty)
>  			continue;
>  
> @@ -5214,6 +5220,9 @@ static int make_script_with_merges(struct pretty_print_context *pp,
>  		oidcpy(&entry->entry.oid, &commit->object.oid);
>  		oidmap_put(&commit2todo, entry);
>  	}
> +	if (skipped_commit)
> +		advise_if_enabled(ADVICE_SKIPPED_CHERRY_PICKS,
> +				  _("use --reapply-cherry-picks to include skipped commits"));

I agree with the change in this hunk that advanced users may want to squelch this "what to do" hint.

I am not sure about the earlier hunk that reports when some commits have actually been skipped. When --no-reapply-cherry-picks is in effect, the user is expecting that some commits are cherry-picks among other (hopefully the majority of) commits, and even those users who do not want to be taught how to use the command would want to learn the fact that some commits were skipped (and which ones).

Using two separate advice configuration variables feel way overkill for this. I wonder if the previous hunk should use warning(), i.e.

Show 6 quoted lines
> +		if (!is_empty && (commit->object.flags & PATCHSAME)) {
> +			warning(_("skipped previously applied commit %s"),
> +				short_commit_name(commit));
> +			skipped_commit = 1;
>  			continue;
> +		}
possibly squelched by "git rebase --quiet".
Show 12 quoted lines
> @@ -5369,8 +5379,13 @@ int sequencer_make_script(struct repository *r, struct strbuf *out, int argc,
>  	while ((commit = get_revision(&revs))) {
>  		int is_empty = is_original_commit_empty(commit);
>  
> -		if (!is_empty && (commit->object.flags & PATCHSAME))
> +		if (!is_empty && (commit->object.flags & PATCHSAME)) {
> +			advise_if_enabled(ADVICE_SKIPPED_CHERRY_PICKS,
> +					  _("skipped previously applied commit %s"),
> +					  short_commit_name(commit));
> +			skipped_commit = 1;
>  			continue;
> +		}

Likewise. I wonder why we have two so-much-similar codepaths that we need to touch, though.

Show 12 quoted lines
>  		if (is_empty && !keep_empty)
>  			continue;
>  		strbuf_addf(out, "%s %s ", insn,
> @@ -5380,6 +5395,9 @@ int sequencer_make_script(struct repository *r, struct strbuf *out, int argc,
>  			strbuf_addf(out, " %c empty", comment_line_char);
>  		strbuf_addch(out, '\n');
>  	}
> +	if (skipped_commit)
> +		advise_if_enabled(ADVICE_SKIPPED_CHERRY_PICKS,
> +				  _("use --reapply-cherry-picks to include skipped commits"));
>  	return 0;
>  }
Previous: Josh SteadmonNext: Phillip Wood
Message 6 of 18 in “sequencer: warn on skipping previously seen commit”
  1. sequencer: warn on skipping previously seen commitJosh Steadmon, Aug 4, 2021
  2. Junio C HamanoAug 4, 2021
  3. Phillip WoodAug 5, 2021
  4. Junio C HamanoAug 5, 2021
  5. sequencer: advise if skipping cherry-picked commitJosh Steadmon, Aug 10, 2021
  6. Junio C HamanoAug 10, 2021
  7. Phillip WoodAug 18, 2021
  8. Josh SteadmonAug 30, 2021
  9. Philippe BlainAug 12, 2021
  10. Junio C HamanoAug 12, 2021
  11. Phillip WoodAug 18, 2021
  12. Philippe BlainAug 18, 2021
  13. Phillip WoodAug 19, 2021
  14. Josh SteadmonAug 30, 2021
  15. Junio C HamanoAug 25, 2021
  16. sequencer: advise if skipping cherry-picked commitJosh Steadmon, Aug 30, 2021
  17. Junio C HamanoAug 30, 2021
  18. Junio C HamanoAug 30, 2021

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