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=-4.1 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 C51BD1F731 for ; Wed, 31 Jul 2019 15:18:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727998AbfGaPSl (ORCPT ); Wed, 31 Jul 2019 11:18:41 -0400 Received: from mail-wm1-f66.google.com ([209.85.128.66]:56064 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726859AbfGaPSl (ORCPT ); Wed, 31 Jul 2019 11:18:41 -0400 Received: by mail-wm1-f66.google.com with SMTP id a15so61237283wmj.5 for ; Wed, 31 Jul 2019 08:18:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:message-id:in-reply-to:references:from:subject:fcc :content-transfer-encoding:mime-version:to:cc; bh=u/qvJ0USHxtknWo+utcHDX1LNrb5QJ7MepXNYJGyUHU=; b=aa+aSaPUYOyZuo8PVGwv0ho7lq+3toU7nXPR1hZr3Iwo5CJceIMZIeBrVHlqEJnCup gS7ljfux/0SCMT7ytM8w3nVOwvDMHOt+hwSAmAin//tSWmWp4cnubC7s+60N11rfCA4b lgtlrWGXyeDEFQqEJ/m9ZjJvxJgTA4nNZSx30ptPX9lB2ZpfryvyUYnNeJj72pEpin/c QKl6u0RDxhgi1pcJuXo2Eam3u+6tZaIQeQeuYK8aTM+SjVSlvhAllvWuyTguLy6i9T23 Moof1ZPIkUqXkpX/+NWbFS1Swzg7ItT6t37JR4QhyarGLMMEet/k8YTj4zUMEZBc3WJe OrlA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:in-reply-to:references:from :subject:fcc:content-transfer-encoding:mime-version:to:cc; bh=u/qvJ0USHxtknWo+utcHDX1LNrb5QJ7MepXNYJGyUHU=; b=ds9littSOJOFv0JY6+aYbhuz0M8rx35Cu6YCTHfuGH3cXxVgNrFK/SUDKosCm4ml4B Vd6HVDjVZfcVlrmGidc9LF1eFzs1RcIoKF+89KtapYPHyDzZ0dOvb5xuOvN2j0bz5rrV RCHqXcNOoMXLmj4NODmFWlExZqwPb0cnWf8fZnu2P5tH+E5Co/4nVfGTZb/4m8QVqm5I AedfDfL/CIuKtRI3z9tNv9yHLoNnEU6DTFlPiUdiJXqPAYEzx4VJO9Dbj+IjeMM5kzmk /8xe6aG321c45Q/m3MgKQ9Z4qMsvYFth1W+DMJdMasM08W/N4ux9kZEwV3YNwNsbNGmj qrog== X-Gm-Message-State: APjAAAV9BYm5zYD9MrVEOX/mAiq9kS5DpeJ+w/oHjY1GrpTNv+cr/6DE csH69/9vqruJExTPMJHhoNJTAMyk X-Google-Smtp-Source: APXvYqyjHcbrjCgt2p/8e6vR6c8CdlylCjoPIzw6uIlldpeXj4JemKnLhujsSTAAH/RVY2mvsXmfaQ== X-Received: by 2002:a7b:c74a:: with SMTP id w10mr106019120wmk.99.1564586317926; Wed, 31 Jul 2019 08:18:37 -0700 (PDT) Received: from [127.0.0.1] ([13.74.141.28]) by smtp.gmail.com with ESMTPSA id b2sm89086573wrp.72.2019.07.31.08.18.37 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 31 Jul 2019 08:18:37 -0700 (PDT) Date: Wed, 31 Jul 2019 08:18:37 -0700 (PDT) X-Google-Original-Date: Wed, 31 Jul 2019 15:18:20 GMT Message-Id: In-Reply-To: References: From: "Johannes Schindelin via GitGitGadget" Subject: [PATCH v2 00/16] rebase -r: support merge strategies other than recursive Fcc: Sent Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit MIME-Version: 1.0 To: git@vger.kernel.org Cc: "brian m. carlson" , Junio C Hamano Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org This is the most notable shortcoming that --rebase-merges has, still, relative to --preserve-merges' capabilities: it does not support passing custom merge strategies or custom merge strategy options. Let's fix this. While working on this patch series, of course I tried to copy-edit the test cases we have, to cover --preserve-merges' support for merge strategies. Oh my, did I regret this decision as soon as my eyes set sight on t3427-rebase-subtree.sh! At first I tried my best to make heads or tails of t3427, for way too long. In the end the only way to understand what the heck it tries to do was to actually fix it. That's why this patch series looks as if it focuses on t3427 rather than on adding support for custom merge strategies to the --rebase-merges mode. As a consolation to myself, this work was actually worth it, surprising as that may look. Not only is t3427 now really easy to understand, adding that test case for --rebase-merges -Xsubtree tickled the sequencer enough to reveal a long-standing bug: the --onto option was simply ignored when passed together with --rebase-merges and --root. For good measure, this patch series addresses this bug, too. Changes since v1: * Rebased to the current js/rebase-cleanup: that branch itself was rebased, and as a consequence, one already-applied patch was dropped from this patch series. * Forward-fixed the fakesha handling, just in case that anybody wants to use it with a regular pick command in the future (thanks, brian). Johannes Schindelin (16): Drop unused git-rebase--am.sh t3400: stop referring to the scripted rebase .gitignore: there is no longer a built-in `git-rebase--interactive` sequencer: the `am` and `rebase--interactive` scripts are gone rebase: fold git-rebase--common into the -p backend t3427: add a clarifying comment t3427: simplify the `setup` test case significantly t3427: move the `filter-branch` invocation into the `setup` case t3427: condense the unnecessarily repetitive test cases into three t3427: fix erroneous assumption t3427: accommodate for the `rebase --merge` backend having been replaced t3427: fix another incorrect assumption rebase -r: support merge strategies other than `recursive` t/lib-rebase: prepare for testing `git rebase --rebase-merges` t3418: test `rebase -r` with merge strategies rebase -r: do not (re-)generate root commits with `--root` *and* `--onto` .gitignore | 3 - Documentation/git-rebase.txt | 2 - Makefile | 2 - builtin/rebase.c | 23 +--- git-rebase--am.sh | 85 -------------- git-rebase--common.sh | 69 ----------- git-rebase--preserve-merges.sh | 55 +++++++++ sequencer.c | 20 +++- sequencer.h | 6 + t/lib-rebase.sh | 9 +- t/t3400-rebase.sh | 2 +- t/t3418-rebase-continue.sh | 14 +++ t/t3422-rebase-incompatible-options.sh | 10 -- t/t3427-rebase-subtree.sh | 155 +++++++++++-------------- t/t3430-rebase-merges.sh | 21 ++++ 15 files changed, 193 insertions(+), 283 deletions(-) delete mode 100644 git-rebase--am.sh delete mode 100644 git-rebase--common.sh base-commit: 80dfc9242ebaba357ffedececd88641a1a752411 Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-294%2Fdscho%2Frebase-r-with-strategies-v2 Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-294/dscho/rebase-r-with-strategies-v2 Pull-Request: https://github.com/gitgitgadget/git/pull/294 Range-diff vs v1: -: ---------- > 1: e0645b3ad7 Drop unused git-rebase--am.sh -: ---------- > 2: 6e8be7d873 t3400: stop referring to the scripted rebase -: ---------- > 3: 9e00e66dc7 .gitignore: there is no longer a built-in `git-rebase--interactive` -: ---------- > 4: db9ec248e1 sequencer: the `am` and `rebase--interactive` scripts are gone -: ---------- > 5: 38c8e3e284 rebase: fold git-rebase--common into the -p backend 1: 05be92d921 = 6: b3daf078e8 t3427: add a clarifying comment 2: df096e054d = 7: c168c4499b t3427: simplify the `setup` test case significantly 3: a3944c5480 ! 8: 138ff362fb t3427: move the `filter-branch` invocation into the `setup` case @@ -29,7 +29,8 @@ ' # FAILURE: Does not preserve master4. - test_expect_failure 'Rebase -Xsubtree --preserve-merges --onto commit 4' ' + test_expect_failure REBASE_P \ + 'Rebase -Xsubtree --preserve-merges --onto commit 4' ' reset_rebase && - git checkout -b rebase-preserve-merges-4 master && - git filter-branch --prune-empty -f --subdirectory-filter files_subtree && @@ -39,8 +40,8 @@ verbose test "$(commit_message HEAD~)" = "files_subtree/master4" ' @@ - # FAILURE: Does not preserve master5. - test_expect_failure 'Rebase -Xsubtree --preserve-merges --onto commit 5' ' + test_expect_failure REBASE_P \ + 'Rebase -Xsubtree --preserve-merges --onto commit 5' ' reset_rebase && - git checkout -b rebase-preserve-merges-5 master && - git filter-branch --prune-empty -f --subdirectory-filter files_subtree && @@ -50,8 +51,8 @@ verbose test "$(commit_message HEAD)" = "files_subtree/master5" ' @@ - # FAILURE: Does not preserve master4. - test_expect_failure 'Rebase -Xsubtree --keep-empty --preserve-merges --onto commit 4' ' + test_expect_failure REBASE_P \ + 'Rebase -Xsubtree --keep-empty --preserve-merges --onto commit 4' ' reset_rebase && - git checkout -b rebase-keep-empty-4 master && - git filter-branch --prune-empty -f --subdirectory-filter files_subtree && @@ -61,8 +62,8 @@ verbose test "$(commit_message HEAD~2)" = "files_subtree/master4" ' @@ - # FAILURE: Does not preserve master5. - test_expect_failure 'Rebase -Xsubtree --keep-empty --preserve-merges --onto commit 5' ' + test_expect_failure REBASE_P \ + 'Rebase -Xsubtree --keep-empty --preserve-merges --onto commit 5' ' reset_rebase && - git checkout -b rebase-keep-empty-5 master && - git filter-branch --prune-empty -f --subdirectory-filter files_subtree && @@ -72,8 +73,8 @@ verbose test "$(commit_message HEAD~)" = "files_subtree/master5" ' @@ - # FAILURE: Does not preserve Empty. - test_expect_failure 'Rebase -Xsubtree --keep-empty --preserve-merges --onto empty commit' ' + test_expect_failure REBASE_P \ + 'Rebase -Xsubtree --keep-empty --preserve-merges --onto empty commit' ' reset_rebase && - git checkout -b rebase-keep-empty-empty master && - git filter-branch --prune-empty -f --subdirectory-filter files_subtree && 4: 9aeb57fa8f ! 9: 46ef005365 t3427: condense the unnecessarily repetitive test cases into three @@ -25,8 +25,9 @@ ' # FAILURE: Does not preserve master4. --test_expect_failure 'Rebase -Xsubtree --preserve-merges --onto commit 4' ' -+test_expect_failure 'Rebase -Xsubtree --preserve-merges --onto commit' ' +-test_expect_failure REBASE_P \ +- 'Rebase -Xsubtree --preserve-merges --onto commit 4' ' ++test_expect_failure REBASE_P 'Rebase -Xsubtree --preserve-merges --onto commit' ' reset_rebase && - git checkout -b rebase-preserve-merges-4 to-rebase && - git rebase -Xsubtree=files_subtree --preserve-merges --onto files-master master && @@ -34,7 +35,8 @@ -' - -# FAILURE: Does not preserve master5. --test_expect_failure 'Rebase -Xsubtree --preserve-merges --onto commit 5' ' +-test_expect_failure REBASE_P \ +- 'Rebase -Xsubtree --preserve-merges --onto commit 5' ' - reset_rebase && - git checkout -b rebase-preserve-merges-5 to-rebase && + git checkout -b rebase-preserve-merges to-rebase && @@ -44,8 +46,9 @@ ' # FAILURE: Does not preserve master4. --test_expect_failure 'Rebase -Xsubtree --keep-empty --preserve-merges --onto commit 4' ' -+test_expect_failure 'Rebase -Xsubtree --keep-empty --preserve-merges --onto commit' ' +-test_expect_failure REBASE_P \ +- 'Rebase -Xsubtree --keep-empty --preserve-merges --onto commit 4' ' ++test_expect_failure REBASE_P 'Rebase -Xsubtree --keep-empty --preserve-merges --onto commit' ' reset_rebase && - git checkout -b rebase-keep-empty-4 to-rebase && - git rebase -Xsubtree=files_subtree --keep-empty --preserve-merges --onto files-master master && @@ -53,7 +56,8 @@ -' - -# FAILURE: Does not preserve master5. --test_expect_failure 'Rebase -Xsubtree --keep-empty --preserve-merges --onto commit 5' ' +-test_expect_failure REBASE_P \ +- 'Rebase -Xsubtree --keep-empty --preserve-merges --onto commit 5' ' - reset_rebase && - git checkout -b rebase-keep-empty-5 to-rebase && - git rebase -Xsubtree=files_subtree --keep-empty --preserve-merges --onto files-master master && @@ -61,7 +65,8 @@ -' - -# FAILURE: Does not preserve Empty. --test_expect_failure 'Rebase -Xsubtree --keep-empty --preserve-merges --onto empty commit' ' +-test_expect_failure REBASE_P \ +- 'Rebase -Xsubtree --keep-empty --preserve-merges --onto empty commit' ' - reset_rebase && - git checkout -b rebase-keep-empty-empty to-rebase && + git checkout -b rebase-keep-empty to-rebase && 5: 3196413c2a = 10: 8afec74cfc t3427: fix erroneous assumption 6: 261825fe44 = 11: d73b0a05d9 t3427: accommodate for the `rebase --merge` backend having been replaced 7: f7452d3740 = 12: 57c63309bf t3427: fix another incorrect assumption 8: 7f60b8e745 < -: ---------- t3427: mark two test cases as requiring support for `git rebase -p` 9: 30405df99f = 13: 75b1395dae rebase -r: support merge strategies other than `recursive` 10: ae9e72b73b ! 14: 8f74bfbc53 t/lib-rebase: prepare for testing `git rebase --rebase-merges` @@ -6,6 +6,26 @@ `--rebase-merges` mode; Let's prepare the fake editor to handle those todo lists properly, too. + The original idea was that we keep the original command unless + overridden, and because the original todo lists only had `pick` lines + anyway, we could be sloppy and "override" the command by the same + command (i.e. use the sed replacement pattern "pick" instead of "&"). + + This actually would not have worked with `fixup` and `squash` commands, + but it would appear that we never tried to use the fake editor with + `--autosquash`. + + However, in the next commit we want to use the fake editor in + conjunction with `--rebase-merges`, so let's use the correct sed + replacement pattern. + + Technically, it is not necessary to take care of the `fakesha` thing + (where we reuse the sed replacement pattern to craft a new todo + command), at least for now, as the only user of that thing overrides the + `action` anyway. Nevertheless, for completeness' sake, we do take care + of it. + + Helped-by: brian m. carlson Signed-off-by: Johannes Schindelin diff --git a/t/lib-rebase.sh b/t/lib-rebase.sh @@ -25,6 +45,10 @@ exec_*|x_*|break|b) echo "$line" | sed 's/_/ /g' >> "$1";; @@ + bad) + action="badcmd";; + fakesha) ++ test \& != "$action" || action=pick echo "$action XXXXXXX False commit" >> "$1" action=pick;; *) 11: a326be77aa = 15: 0c938d02b3 t3418: test `rebase -r` with merge strategies 12: e6713568dc = 16: be62d267cb rebase -r: do not (re-)generate root commits with `--root` *and* `--onto` -- gitgitgadget