diff options
| -rw-r--r-- | Documentation/config.txt | 8 | ||||
| -rw-r--r-- | Documentation/git-pull.txt | 18 | ||||
| -rwxr-xr-x | git-pull.sh | 31 | ||||
| -rwxr-xr-x | t/t5520-pull.sh | 89 |
4 files changed, 135 insertions, 11 deletions
diff --git a/Documentation/config.txt b/Documentation/config.txt index ec57a15ac5..4c22be20cc 100644 --- a/Documentation/config.txt +++ b/Documentation/config.txt @@ -766,6 +766,10 @@ branch.<name>.rebase:: "git pull" is run. See "pull.rebase" for doing this in a non branch-specific manner. + + When preserve, also pass `--preserve-merges` along to 'git rebase' + so that locally committed merge commits will not be flattened + by running 'git pull'. ++ *NOTE*: this is a possibly dangerous operation; do *not* use it unless you understand the implications (see linkgit:git-rebase[1] for details). @@ -1826,6 +1830,10 @@ pull.rebase:: pull" is run. See "branch.<name>.rebase" for setting this on a per-branch basis. + + When preserve, also pass `--preserve-merges` along to 'git rebase' + so that locally committed merge commits will not be flattened + by running 'git pull'. ++ *NOTE*: this is a possibly dangerous operation; do *not* use it unless you understand the implications (see linkgit:git-rebase[1] for details). diff --git a/Documentation/git-pull.txt b/Documentation/git-pull.txt index 6ef8d599d3..beea10b148 100644 --- a/Documentation/git-pull.txt +++ b/Documentation/git-pull.txt @@ -102,12 +102,18 @@ include::merge-options.txt[] :git-pull: 1 -r:: ---rebase:: - Rebase the current branch on top of the upstream branch after - fetching. If there is a remote-tracking branch corresponding to - the upstream branch and the upstream branch was rebased since last - fetched, the rebase uses that information to avoid rebasing - non-local changes. +--rebase[=false|true|preserve]:: + When true, rebase the current branch on top of the upstream + branch after fetching. If there is a remote-tracking branch + corresponding to the upstream branch and the upstream branch + was rebased since last fetched, the rebase uses that information + to avoid rebasing non-local changes. ++ +When preserve, also rebase the current branch on top of the upstream +branch, but pass `--preserve-merges` along to `git rebase` so that +locally created merge commits will not be flattened. ++ +When false, merge the current branch into the upstream branch. + See `pull.rebase`, `branch.<name>.rebase` and `branch.autosetuprebase` in linkgit:git-config[1] if you want to make `git pull` always use diff --git a/git-pull.sh b/git-pull.sh index f0df41c841..e11d9a0580 100755 --- a/git-pull.sh +++ b/git-pull.sh @@ -4,7 +4,7 @@ # # Fetch one or more remote refs and merge it/them into the current HEAD. -USAGE='[-n | --no-stat] [--[no-]commit] [--[no-]squash] [--[no-]ff] [-s strategy]... [<fetch-options>] <repo> <head>...' +USAGE='[-n | --no-stat] [--[no-]commit] [--[no-]squash] [--[no-]ff] [--[no-]rebase|--rebase=preserve] [-s strategy]... [<fetch-options>] <repo> <head>...' LONG_USAGE='Fetch one or more remote refs and integrate it/them with the current HEAD.' SUBDIRECTORY_OK=Yes OPTIONS_SPEC= @@ -38,15 +38,19 @@ Please, commit your changes before you can merge.")" test -z "$(git ls-files -u)" || die_conflict test -f "$GIT_DIR/MERGE_HEAD" && die_merge +bool_or_string_config () { + git config --bool "$1" 2>/dev/null || git config "$1" +} + strategy_args= diffstat= no_commit= squash= no_ff= ff_only= log_arg= verbosity= progress= recurse_submodules= verify_signatures= -merge_args= edit= +merge_args= edit= rebase_args= curr_branch=$(git symbolic-ref -q HEAD) curr_branch_short="${curr_branch#refs/heads/}" -rebase=$(git config --bool branch.$curr_branch_short.rebase) +rebase=$(bool_or_string_config branch.$curr_branch_short.rebase) if test -z "$rebase" then - rebase=$(git config --bool pull.rebase) + rebase=$(bool_or_string_config pull.rebase) fi dry_run= while : @@ -110,6 +114,9 @@ do esac merge_args="$merge_args$xx " ;; + -r=*|--r=*|--re=*|--reb=*|--reba=*|--rebas=*|--rebase=*) + rebase="${1#*=}" + ;; -r|--r|--re|--reb|--reba|--rebas|--rebase) rebase=true ;; @@ -145,6 +152,20 @@ do shift done +case "$rebase" in +preserve) + rebase=true + rebase_args=--preserve-merges + ;; +true|false|'') + ;; +*) + echo "Invalid value for --rebase, should be true, false, or preserve" + usage + exit 1 + ;; +esac + error_on_no_merge_candidates () { exec >&2 for opt @@ -292,7 +313,7 @@ fi merge_name=$(git fmt-merge-msg $log_arg <"$GIT_DIR/FETCH_HEAD") || exit case "$rebase" in true) - eval="git-rebase $diffstat $strategy_args $merge_args $verbosity" + eval="git-rebase $diffstat $strategy_args $merge_args $rebase_args $verbosity" eval="$eval --onto $merge_head ${oldremoteref:-$merge_head}" ;; *) diff --git a/t/t5520-pull.sh b/t/t5520-pull.sh index ed4d9c8318..227d293350 100755 --- a/t/t5520-pull.sh +++ b/t/t5520-pull.sh @@ -148,6 +148,95 @@ test_expect_success 'branch.to-rebase.rebase should override pull.rebase' ' test new = $(git show HEAD:file2) ' +# add a feature branch, keep-merge, that is merged into master, so the +# test can try preserving the merge commit (or not) with various +# --rebase flags/pull.rebase settings. +test_expect_success 'preserve merge setup' ' + git reset --hard before-rebase && + git checkout -b keep-merge second^ && + test_commit file3 && + git checkout to-rebase && + git merge keep-merge && + git tag before-preserve-rebase +' + +test_expect_success 'pull.rebase=false create a new merge commit' ' + git reset --hard before-preserve-rebase && + test_config pull.rebase false && + git pull . copy && + test $(git rev-parse HEAD^1) = $(git rev-parse before-preserve-rebase) && + test $(git rev-parse HEAD^2) = $(git rev-parse copy) && + test file3 = $(git show HEAD:file3.t) +' + +test_expect_success 'pull.rebase=true flattens keep-merge' ' + git reset --hard before-preserve-rebase && + test_config pull.rebase true && + git pull . copy && + test $(git rev-parse HEAD^^) = $(git rev-parse copy) && + test file3 = $(git show HEAD:file3.t) +' + +test_expect_success 'pull.rebase=1 is treated as true and flattens keep-merge' ' + git reset --hard before-preserve-rebase && + test_config pull.rebase 1 && + git pull . copy && + test $(git rev-parse HEAD^^) = $(git rev-parse copy) && + test file3 = $(git show HEAD:file3.t) +' + +test_expect_success 'pull.rebase=preserve rebases and merges keep-merge' ' + git reset --hard before-preserve-rebase && + test_config pull.rebase preserve && + git pull . copy && + test $(git rev-parse HEAD^^) = $(git rev-parse copy) && + test $(git rev-parse HEAD^2) = $(git rev-parse keep-merge) +' + +test_expect_success 'pull.rebase=invalid fails' ' + git reset --hard before-preserve-rebase && + test_config pull.rebase invalid && + ! git pull . copy +' + +test_expect_success '--rebase=false create a new merge commit' ' + git reset --hard before-preserve-rebase && + test_config pull.rebase true && + git pull --rebase=false . copy && + test $(git rev-parse HEAD^1) = $(git rev-parse before-preserve-rebase) && + test $(git rev-parse HEAD^2) = $(git rev-parse copy) && + test file3 = $(git show HEAD:file3.t) +' + +test_expect_success '--rebase=true rebases and flattens keep-merge' ' + git reset --hard before-preserve-rebase && + test_config pull.rebase preserve && + git pull --rebase=true . copy && + test $(git rev-parse HEAD^^) = $(git rev-parse copy) && + test file3 = $(git show HEAD:file3.t) +' + +test_expect_success '--rebase=preserve rebases and merges keep-merge' ' + git reset --hard before-preserve-rebase && + test_config pull.rebase true && + git pull --rebase=preserve . copy && + test $(git rev-parse HEAD^^) = $(git rev-parse copy) && + test $(git rev-parse HEAD^2) = $(git rev-parse keep-merge) +' + +test_expect_success '--rebase=invalid fails' ' + git reset --hard before-preserve-rebase && + ! git pull --rebase=invalid . copy +' + +test_expect_success '--rebase overrides pull.rebase=preserve and flattens keep-merge' ' + git reset --hard before-preserve-rebase && + test_config pull.rebase preserve && + git pull --rebase . copy && + test $(git rev-parse HEAD^^) = $(git rev-parse copy) && + test file3 = $(git show HEAD:file3.t) +' + test_expect_success '--rebase with rebased upstream' ' git remote add -f me . && |