From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.180.0/23 X-Spam-Status: No, score=-3.8 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_NONE shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by dcvr.yhbt.net (Postfix) with ESMTP id 268891F461 for ; Sun, 23 Jun 2019 20:06:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726401AbfFWUGS (ORCPT ); Sun, 23 Jun 2019 16:06:18 -0400 Received: from mail-pl1-f193.google.com ([209.85.214.193]:45490 "EHLO mail-pl1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726285AbfFWUGR (ORCPT ); Sun, 23 Jun 2019 16:06:17 -0400 Received: by mail-pl1-f193.google.com with SMTP id bi6so5633254plb.12 for ; Sun, 23 Jun 2019 13:06:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=7y/kL5Nok/GYir2EOd9bxMuhqFh5Z185neSHy7az5fM=; b=CZ8s7vkaee8JEgIW3oSxmu4D6LQbvDU9g2IdNgZinTbMIY9aHFc33xNzgFy1Gbc926 S+2+Y1OsJ/HvCbyM9E6FXpgAAom/2SkAcJYjXR7BLFBCCJEVNAq66asmuY1pO50wozQM 6wS0NJRkXwhL5sE0QHBGODlPREAm1EAV+36Ley2NVqzEND8enDYqFh9e7CQJmIRSdu+a c+VGzqrOWpkAnN1gSWgr0vgFUYnBqSGO6LadS60zmRBvH+8Xp3NavB2QjPcNSqnjpJ6Y sGpls4+dnyqtfxFZhooawEO7GZ+FY0qfboF8jMWTTSD5ND5SrbkKosym2Gg30AUmD2jK r1Kg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=7y/kL5Nok/GYir2EOd9bxMuhqFh5Z185neSHy7az5fM=; b=ge2xhs6ufdhhTcXGlvRKiya/wTSyr8HukRElIFlTjQsXmbkoIlpXXwf0X206ElwMfA vPc7Qc1v/uMK55VDmPPjokzpZ1ZzARpyVJNd5tVZhsiyL9rDdiPvt1QPrU9jeF78NToh GRZnSeZU0slBt9E5uuDGe9Ee7OvQNI2aUP/S1i1oF26UDsF14ZmVtdHM3EhUko3SWwhK ah7Nsfm9n15Zc4zj8U/jYgCrr3dqZJ3yQMclhuIMy9xL0BEeGf2SQtTcrjgotN9esj3Q FK5WrG+xYZ5EISlU/7I0sN1bm1O1ANTgszB90Rmuaw4O9gBZIqgdL4Mam0AutRai1ens Ncag== X-Gm-Message-State: APjAAAWLSnvEXMizlzznrkGT8Hdv7qL5aaffba00fg8QXlJ91zaWhDbc Uf1qGtrMLl9NcK+myQp/v80= X-Google-Smtp-Source: APXvYqzqM6w09tqVUs+J3QtwgM7MvcsZfrjokfCUgYn1QCXYHE7kpdipPh8tkoiHLUEVBpUE0a1Y2w== X-Received: by 2002:a17:902:aa41:: with SMTP id c1mr3132830plr.201.1561320376687; Sun, 23 Jun 2019 13:06:16 -0700 (PDT) Received: from ar135.iitr.ac.in ([103.37.200.213]) by smtp.gmail.com with ESMTPSA id 27sm8621882pgt.6.2019.06.23.13.06.13 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Sun, 23 Jun 2019 13:06:15 -0700 (PDT) From: Rohit Ashiwal To: rohit.ashiwal265@gmail.com Cc: git@vger.kernel.org, newren@gmail.com, t.gummerer@gmail.com, phillip.wood123@gmail.com, gitster@pobox.com, martin.agren@gmail.com Subject: [GSoC][PATCH v7 5/6] cherry-pick/revert: add --skip option Date: Mon, 24 Jun 2019 01:33:37 +0530 Message-Id: <20190623200338.17144-6-rohit.ashiwal265@gmail.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190623200338.17144-1-rohit.ashiwal265@gmail.com> References: <20190608191958.4593-1-rohit.ashiwal265@gmail.com> <20190623200338.17144-1-rohit.ashiwal265@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org git am or rebase have a --skip flag to skip the current commit if the user wishes to do so. During a cherry-pick or revert a user could likewise skip a commit, but needs to use 'git reset' (or in the case of conflicts 'git reset --merge'), followed by 'git (cherry-pick | revert) --continue' to skip the commit. This is more annoying and sometimes confusing on the users' part. Add a `--skip` option to make skipping commits easier for the user and to make the commands more consistent. In the next commit, we will change the advice messages hence finishing the process of teaching revert and cherry-pick "how to skip commits". Signed-off-by: Rohit Ashiwal --- Documentation/git-cherry-pick.txt | 4 +- Documentation/git-revert.txt | 4 +- Documentation/sequencer.txt | 4 ++ builtin/revert.c | 5 ++ sequencer.c | 73 +++++++++++++++++++++ sequencer.h | 1 + t/t3510-cherry-pick-sequence.sh | 102 ++++++++++++++++++++++++++++++ 7 files changed, 187 insertions(+), 6 deletions(-) diff --git a/Documentation/git-cherry-pick.txt b/Documentation/git-cherry-pick.txt index 754b16ce0c..83ce51aedf 100644 --- a/Documentation/git-cherry-pick.txt +++ b/Documentation/git-cherry-pick.txt @@ -10,9 +10,7 @@ SYNOPSIS [verse] 'git cherry-pick' [--edit] [-n] [-m parent-number] [-s] [-x] [--ff] [-S[]] ... -'git cherry-pick' --continue -'git cherry-pick' --quit -'git cherry-pick' --abort +'git cherry-pick' (--continue | --skip | --abort | --quit) DESCRIPTION ----------- diff --git a/Documentation/git-revert.txt b/Documentation/git-revert.txt index 0c82ca5bc0..665e065ee3 100644 --- a/Documentation/git-revert.txt +++ b/Documentation/git-revert.txt @@ -9,9 +9,7 @@ SYNOPSIS -------- [verse] 'git revert' [--[no-]edit] [-n] [-m parent-number] [-s] [-S[]] ... -'git revert' --continue -'git revert' --quit -'git revert' --abort +'git revert' (--continue | --skip | --abort | --quit) DESCRIPTION ----------- diff --git a/Documentation/sequencer.txt b/Documentation/sequencer.txt index 5a57c4a407..3bceb56474 100644 --- a/Documentation/sequencer.txt +++ b/Documentation/sequencer.txt @@ -3,6 +3,10 @@ `.git/sequencer`. Can be used to continue after resolving conflicts in a failed cherry-pick or revert. +--skip:: + Skip the current commit and continue with the rest of the + sequence. + --quit:: Forget about the current operation in progress. Can be used to clear the sequencer state after a failed cherry-pick or diff --git a/builtin/revert.c b/builtin/revert.c index d4dcedbdc6..5dc5891ea2 100644 --- a/builtin/revert.c +++ b/builtin/revert.c @@ -102,6 +102,7 @@ static int run_sequencer(int argc, const char **argv, struct replay_opts *opts) OPT_CMDMODE(0, "quit", &cmd, N_("end revert or cherry-pick sequence"), 'q'), OPT_CMDMODE(0, "continue", &cmd, N_("resume revert or cherry-pick sequence"), 'c'), OPT_CMDMODE(0, "abort", &cmd, N_("cancel revert or cherry-pick sequence"), 'a'), + OPT_CMDMODE(0, "skip", &cmd, N_("skip current commit and continue"), 's'), OPT_CLEANUP(&cleanup_arg), OPT_BOOL('n', "no-commit", &opts->no_commit, N_("don't automatically commit")), OPT_BOOL('e', "edit", &opts->edit, N_("edit the commit message")), @@ -151,6 +152,8 @@ static int run_sequencer(int argc, const char **argv, struct replay_opts *opts) this_operation = "--quit"; else if (cmd == 'c') this_operation = "--continue"; + else if (cmd == 's') + this_operation = "--skip"; else { assert(cmd == 'a'); this_operation = "--abort"; @@ -210,6 +213,8 @@ static int run_sequencer(int argc, const char **argv, struct replay_opts *opts) return sequencer_continue(the_repository, opts); if (cmd == 'a') return sequencer_rollback(the_repository, opts); + if (cmd == 's') + return sequencer_skip(the_repository, opts); return sequencer_pick_revisions(the_repository, opts); } diff --git a/sequencer.c b/sequencer.c index 70efe36ee8..f5e3d60878 100644 --- a/sequencer.c +++ b/sequencer.c @@ -2762,6 +2762,15 @@ static int rollback_single_pick(struct repository *r) return reset_merge(&head_oid); } +static int skip_single_pick(void) +{ + struct object_id head; + + if (read_ref_full("HEAD", 0, &head, NULL)) + return error(_("cannot resolve HEAD")); + return reset_merge(&head); +} + int sequencer_rollback(struct repository *r, struct replay_opts *opts) { FILE *f; @@ -2811,6 +2820,70 @@ int sequencer_rollback(struct repository *r, struct replay_opts *opts) return -1; } +int sequencer_skip(struct repository *r, struct replay_opts *opts) +{ + enum replay_action action = -1; + sequencer_get_last_command(r, &action); + + /* + * Check whether the subcommand requested to skip the commit is actually + * in progress and that it's safe to skip the commit. + * + * opts->action tells us which subcommand requested to skip the commit. + * If the corresponding .git/_HEAD exists, we know that the + * action is in progress and we can skip the commit. + * + * Otherwise we check that the last instruction was related to the + * particular subcommand we're trying to execute and barf if that's not + * the case. + * + * Finally we check that the rollback is "safe", i.e., has the HEAD + * moved? In this case, it doesn't make sense to "reset the merge" and + * "skip the commit" as the user already handled this by committing. But + * we'd not want to barf here, instead give advice on how to proceed. We + * only need to check that when .git/_HEAD doesn't exist because + * it gets removed when the user commits, so if it still exists we're + * sure the user can't have committed before. + */ + switch (opts->action) { + case REPLAY_REVERT: + if (!file_exists(git_path_revert_head(r))) { + if (action != REPLAY_REVERT) + return error(_("no revert in progress")); + if (!rollback_is_safe()) + goto give_advice; + } + break; + case REPLAY_PICK: + if (!file_exists(git_path_cherry_pick_head(r))) { + if (action != REPLAY_PICK) + return error(_("no cherry-pick in progress")); + if (!rollback_is_safe()) + goto give_advice; + } + break; + default: + BUG("unexpected action in sequencer_skip"); + } + + if (skip_single_pick()) + return error(_("failed to skip the commit")); + if (!is_directory(git_path_seq_dir())) + return 0; + + return sequencer_continue(r, opts); + +give_advice: + error(_("there is nothing to skip")); + + if (advice_resolve_conflict) { + advise(_("have you committed already?\n" + "try \"git %s --continue\""), + action == REPLAY_REVERT ? "revert" : "cherry-pick"); + } + return -1; +} + static int save_todo(struct todo_list *todo_list, struct replay_opts *opts) { struct lock_file todo_lock = LOCK_INIT; diff --git a/sequencer.h b/sequencer.h index 0c494b83d4..731b9853eb 100644 --- a/sequencer.h +++ b/sequencer.h @@ -129,6 +129,7 @@ int sequencer_pick_revisions(struct repository *repo, struct replay_opts *opts); int sequencer_continue(struct repository *repo, struct replay_opts *opts); int sequencer_rollback(struct repository *repo, struct replay_opts *opts); +int sequencer_skip(struct repository *repo, struct replay_opts *opts); int sequencer_remove_state(struct replay_opts *opts); #define TODO_LIST_KEEP_EMPTY (1U << 0) diff --git a/t/t3510-cherry-pick-sequence.sh b/t/t3510-cherry-pick-sequence.sh index 941d5026da..20515ea37b 100755 --- a/t/t3510-cherry-pick-sequence.sh +++ b/t/t3510-cherry-pick-sequence.sh @@ -93,6 +93,108 @@ test_expect_success 'cherry-pick cleans up sequencer state upon success' ' test_path_is_missing .git/sequencer ' +test_expect_success 'cherry-pick --skip requires cherry-pick in progress' ' + pristine_detach initial && + test_must_fail git cherry-pick --skip +' + +test_expect_success 'revert --skip requires revert in progress' ' + pristine_detach initial && + test_must_fail git revert --skip +' + +test_expect_success 'cherry-pick --skip to skip commit' ' + pristine_detach initial && + test_must_fail git cherry-pick anotherpick && + test_must_fail git revert --skip && + git cherry-pick --skip && + test_cmp_rev initial HEAD && + test_path_is_missing .git/CHERRY_PICK_HEAD +' + +test_expect_success 'revert --skip to skip commit' ' + pristine_detach anotherpick && + test_must_fail git revert anotherpick~1 && + test_must_fail git cherry-pick --skip && + git revert --skip && + test_cmp_rev anotherpick HEAD +' + +test_expect_success 'skip "empty" commit' ' + pristine_detach picked && + test_commit dummy foo d && + test_must_fail git cherry-pick anotherpick && + git cherry-pick --skip && + test_cmp_rev dummy HEAD +' + +test_expect_success 'skip a commit and check if rest of sequence is correct' ' + pristine_detach initial && + echo e >expect && + cat >expect.log <<-EOF && + OBJID + :100644 100644 OBJID OBJID M foo + OBJID + :100644 100644 OBJID OBJID M foo + OBJID + :100644 100644 OBJID OBJID M unrelated + OBJID + :000000 100644 OBJID OBJID A foo + :000000 100644 OBJID OBJID A unrelated + EOF + test_must_fail git cherry-pick base..yetanotherpick && + test_must_fail git cherry-pick --skip && + echo d >foo && + git add foo && + git cherry-pick --continue && + { + git rev-list HEAD | + git diff-tree --root --stdin | + sed "s/$OID_REGEX/OBJID/g" + } >actual.log && + test_cmp expect foo && + test_cmp expect.log actual.log +' + +test_expect_success 'check advice when we move HEAD by committing' ' + pristine_detach initial && + cat >expect <<-EOF && + error: there is nothing to skip + hint: have you committed already? + hint: try "git cherry-pick --continue" + fatal: cherry-pick failed + EOF + test_must_fail git cherry-pick base..yetanotherpick && + echo c >foo && + git commit -a && + test_path_is_missing .git/CHERRY_PICK_HEAD && + test_must_fail git cherry-pick --skip 2>advice && + test_i18ncmp expect advice +' + +test_expect_success 'allow skipping commit but not abort for a new history' ' + pristine_detach initial && + cat >expect <<-EOF && + error: cannot abort from a branch yet to be born + fatal: cherry-pick failed + EOF + git checkout --orphan new_disconnected && + git reset --hard && + test_must_fail git cherry-pick anotherpick && + test_must_fail git cherry-pick --abort 2>advice && + git cherry-pick --skip && + test_i18ncmp expect advice +' + +test_expect_success 'allow skipping stopped cherry-pick because of untracked file modifications' ' + pristine_detach initial && + git rm --cached unrelated && + git commit -m "untrack unrelated" && + test_must_fail git cherry-pick initial base && + test_path_is_missing .git/CHERRY_PICK_HEAD && + git cherry-pick --skip +' + test_expect_success '--quit does not complain when no cherry-pick is in progress' ' pristine_detach initial && git cherry-pick --quit -- 2.21.0