Merge branch 'tr/rebase-root'
* tr/rebase-root: rebase: update documentation for --root rebase -i: learn to rebase root commit rebase: learn to rebase root commit rebase -i: execute hook only after argument checking
This commit is contained in:
Junio C Hamano
commit
90abc19b5a
@ -8,10 +8,11 @@ git-rebase - Forward-port local commits to the updated upstream head
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SYNOPSIS
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--------
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[verse]
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'git rebase' [-i | --interactive] [-v | --verbose] [-m | --merge]
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[-s <strategy> | --strategy=<strategy>] [--no-verify]
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[-C<n>] [ --whitespace=<option>] [-p | --preserve-merges]
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[--onto <newbase>] <upstream> [<branch>]
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'git rebase' [-i | --interactive] [options] [--onto <newbase>]
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<upstream> [<branch>]
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'git rebase' [-i | --interactive] [options] --onto <newbase>
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--root [<branch>]
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'git rebase' --continue | --skip | --abort
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DESCRIPTION
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@ -22,7 +23,8 @@ it remains on the current branch.
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All changes made by commits in the current branch but that are not
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in <upstream> are saved to a temporary area. This is the same set
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of commits that would be shown by `git log <upstream>..HEAD`.
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of commits that would be shown by `git log <upstream>..HEAD` (or
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`git log HEAD`, if --root is specified).
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The current branch is reset to <upstream>, or <newbase> if the
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--onto option was supplied. This has the exact same effect as
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@ -255,6 +257,15 @@ OPTIONS
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--preserve-merges::
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Instead of ignoring merges, try to recreate them.
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--root::
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Rebase all commits reachable from <branch>, instead of
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limiting them with an <upstream>. This allows you to rebase
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the root commit(s) on a branch. Must be used with --onto, and
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will skip changes already contained in <newbase> (instead of
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<upstream>). When used together with --preserve-merges, 'all'
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root commits will be rewritten to have <newbase> as parent
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instead.
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include::merge-strategies.txt[]
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NOTES
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@ -27,6 +27,7 @@ continue continue rebasing process
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abort abort rebasing process and restore original branch
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skip skip current patch and continue rebasing process
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no-verify override pre-rebase hook from stopping the operation
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root rebase all reachable commmits up to the root(s)
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"
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. git-sh-setup
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@ -44,6 +45,7 @@ STRATEGY=
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ONTO=
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VERBOSE=
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OK_TO_SKIP_PRE_REBASE=
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REBASE_ROOT=
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GIT_CHERRY_PICK_HELP=" After resolving the conflicts,
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mark the corrected paths with 'git add <paths>', and
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@ -154,6 +156,11 @@ pick_one () {
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output git rev-parse --verify $sha1 || die "Invalid commit name: $sha1"
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test -d "$REWRITTEN" &&
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pick_one_preserving_merges "$@" && return
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if test ! -z "$REBASE_ROOT"
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then
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output git cherry-pick "$@"
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return
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fi
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parent_sha1=$(git rev-parse --verify $sha1^) ||
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die "Could not get the parent of $sha1"
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current_sha1=$(git rev-parse --verify HEAD)
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@ -197,7 +204,11 @@ pick_one_preserving_merges () {
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# rewrite parents; if none were rewritten, we can fast-forward.
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new_parents=
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pend=" $(git rev-list --parents -1 $sha1 | cut -d' ' -f2-)"
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pend=" $(git rev-list --parents -1 $sha1 | cut -d' ' -s -f2-)"
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if test "$pend" = " "
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then
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pend=" root"
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fi
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while [ "$pend" != "" ]
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do
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p=$(expr "$pend" : ' \([^ ]*\)')
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@ -227,7 +238,9 @@ pick_one_preserving_merges () {
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if test -f "$DROPPED"/$p
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then
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fast_forward=f
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pend=" $(cat "$DROPPED"/$p)$pend"
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replacement="$(cat "$DROPPED"/$p)"
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test -z "$replacement" && replacement=root
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pend=" $replacement$pend"
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else
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new_parents="$new_parents $p"
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fi
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@ -443,6 +456,7 @@ get_saved_options () {
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test -d "$REWRITTEN" && PRESERVE_MERGES=t
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test -f "$DOTEST"/strategy && STRATEGY="$(cat "$DOTEST"/strategy)"
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test -f "$DOTEST"/verbose && VERBOSE=t
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test ! -s "$DOTEST"/upstream && REBASE_ROOT=t
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}
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while test $# != 0
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@ -547,6 +561,9 @@ first and then run 'git rebase --continue' again."
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-i)
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# yeah, we know
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;;
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--root)
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REBASE_ROOT=t
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;;
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--onto)
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shift
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ONTO=$(git rev-parse --verify "$1") ||
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@ -554,27 +571,36 @@ first and then run 'git rebase --continue' again."
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;;
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--)
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shift
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run_pre_rebase_hook ${1+"$@"}
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test $# -eq 1 -o $# -eq 2 || usage
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test ! -z "$REBASE_ROOT" -o $# -eq 1 -o $# -eq 2 || usage
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test -d "$DOTEST" &&
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die "Interactive rebase already started"
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git var GIT_COMMITTER_IDENT >/dev/null ||
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die "You need to set your committer info first"
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if test -z "$REBASE_ROOT"
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then
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UPSTREAM_ARG="$1"
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UPSTREAM=$(git rev-parse --verify "$1") || die "Invalid base"
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test -z "$ONTO" && ONTO=$UPSTREAM
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shift
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else
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UPSTREAM_ARG=--root
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test -z "$ONTO" &&
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die "You must specify --onto when using --root"
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fi
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run_pre_rebase_hook "$UPSTREAM_ARG" "$@"
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comment_for_reflog start
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require_clean_work_tree
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UPSTREAM=$(git rev-parse --verify "$1") || die "Invalid base"
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test -z "$ONTO" && ONTO=$UPSTREAM
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if test ! -z "$2"
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if test ! -z "$1"
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then
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output git show-ref --verify --quiet "refs/heads/$2" ||
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die "Invalid branchname: $2"
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output git checkout "$2" ||
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die "Could not checkout $2"
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output git show-ref --verify --quiet "refs/heads/$1" ||
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die "Invalid branchname: $1"
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output git checkout "$1" ||
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die "Could not checkout $1"
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fi
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HEAD=$(git rev-parse --verify HEAD) || die "No HEAD?"
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@ -598,12 +624,19 @@ first and then run 'git rebase --continue' again."
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# This ensures that commits on merged, but otherwise
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# unrelated side branches are left alone. (Think "X"
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# in the man page's example.)
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mkdir "$REWRITTEN" &&
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for c in $(git merge-base --all $HEAD $UPSTREAM)
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do
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echo $ONTO > "$REWRITTEN"/$c ||
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if test -z "$REBASE_ROOT"
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then
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mkdir "$REWRITTEN" &&
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for c in $(git merge-base --all $HEAD $UPSTREAM)
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do
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echo $ONTO > "$REWRITTEN"/$c ||
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die "Could not init rewritten commits"
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done
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else
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mkdir "$REWRITTEN" &&
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echo $ONTO > "$REWRITTEN"/root ||
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die "Could not init rewritten commits"
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done
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fi
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# No cherry-pick because our first pass is to determine
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# parents to rewrite and skipping dropped commits would
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# prematurely end our probe
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@ -613,12 +646,21 @@ first and then run 'git rebase --continue' again."
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MERGES_OPTION="--no-merges --cherry-pick"
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fi
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SHORTUPSTREAM=$(git rev-parse --short $UPSTREAM)
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SHORTHEAD=$(git rev-parse --short $HEAD)
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SHORTONTO=$(git rev-parse --short $ONTO)
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if test -z "$REBASE_ROOT"
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# this is now equivalent to ! -z "$UPSTREAM"
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then
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SHORTUPSTREAM=$(git rev-parse --short $UPSTREAM)
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REVISIONS=$UPSTREAM...$HEAD
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SHORTREVISIONS=$SHORTUPSTREAM..$SHORTHEAD
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else
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REVISIONS=$ONTO...$HEAD
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SHORTREVISIONS=$SHORTHEAD
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fi
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git rev-list $MERGES_OPTION --pretty=oneline --abbrev-commit \
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--abbrev=7 --reverse --left-right --topo-order \
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$UPSTREAM...$HEAD | \
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$REVISIONS | \
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sed -n "s/^>//p" | while read shortsha1 rest
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do
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if test t != "$PRESERVE_MERGES"
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@ -626,14 +668,19 @@ first and then run 'git rebase --continue' again."
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echo "pick $shortsha1 $rest" >> "$TODO"
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else
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sha1=$(git rev-parse $shortsha1)
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preserve=t
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for p in $(git rev-list --parents -1 $sha1 | cut -d' ' -f2-)
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do
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if test -f "$REWRITTEN"/$p -a \( $p != $UPSTREAM -o $sha1 = $first_after_upstream \)
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then
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preserve=f
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fi
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done
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if test -z "$REBASE_ROOT"
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then
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preserve=t
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for p in $(git rev-list --parents -1 $sha1 | cut -d' ' -s -f2-)
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do
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if test -f "$REWRITTEN"/$p -a \( $p != $UPSTREAM -o $sha1 = $first_after_upstream \)
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then
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preserve=f
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fi
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done
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else
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preserve=f
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fi
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if test f = "$preserve"
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then
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touch "$REWRITTEN"/$sha1
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@ -647,11 +694,11 @@ first and then run 'git rebase --continue' again."
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then
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mkdir "$DROPPED"
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# Save all non-cherry-picked changes
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git rev-list $UPSTREAM...$HEAD --left-right --cherry-pick | \
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git rev-list $REVISIONS --left-right --cherry-pick | \
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sed -n "s/^>//p" > "$DOTEST"/not-cherry-picks
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# Now all commits and note which ones are missing in
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# not-cherry-picks and hence being dropped
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git rev-list $UPSTREAM..$HEAD |
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git rev-list $REVISIONS |
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while read rev
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do
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if test -f "$REWRITTEN"/$rev -a "$(grep "$rev" "$DOTEST"/not-cherry-picks)" = ""
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@ -660,17 +707,18 @@ first and then run 'git rebase --continue' again."
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# not worthwhile, we don't want to track its multiple heads,
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# just the history of its first-parent for others that will
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# be rebasing on top of it
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git rev-list --parents -1 $rev | cut -d' ' -f2 > "$DROPPED"/$rev
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git rev-list --parents -1 $rev | cut -d' ' -s -f2 > "$DROPPED"/$rev
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short=$(git rev-list -1 --abbrev-commit --abbrev=7 $rev)
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grep -v "^[a-z][a-z]* $short" <"$TODO" > "${TODO}2" ; mv "${TODO}2" "$TODO"
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rm "$REWRITTEN"/$rev
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fi
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done
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fi
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test -s "$TODO" || echo noop >> "$TODO"
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cat >> "$TODO" << EOF
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# Rebase $SHORTUPSTREAM..$SHORTHEAD onto $SHORTONTO
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# Rebase $SHORTREVISIONS onto $SHORTONTO
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#
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# Commands:
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# p, pick = use commit
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@ -3,7 +3,7 @@
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# Copyright (c) 2005 Junio C Hamano.
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#
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USAGE='[--interactive | -i] [-v] [--onto <newbase>] <upstream> [<branch>]'
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USAGE='[--interactive | -i] [-v] [--onto <newbase>] [<upstream>|--root] [<branch>]'
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LONG_USAGE='git-rebase replaces <branch> with a new branch of the
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same name. When the --onto option is provided the new branch starts
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out with a HEAD equal to <newbase>, otherwise it is equal to <upstream>
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@ -47,6 +47,7 @@ dotest="$GIT_DIR"/rebase-merge
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prec=4
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verbose=
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git_am_opt=
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rebase_root=
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continue_merge () {
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test -n "$prev_head" || die "prev_head must be defined"
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@ -297,6 +298,9 @@ do
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-C*)
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git_am_opt="$git_am_opt $1"
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;;
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--root)
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rebase_root=t
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;;
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-*)
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usage
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;;
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@ -344,17 +348,29 @@ case "$diff" in
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;;
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esac
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# The upstream head must be given. Make sure it is valid.
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upstream_name="$1"
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upstream=`git rev-parse --verify "${upstream_name}^0"` ||
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die "invalid upstream $upstream_name"
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if test -z "$rebase_root"
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then
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# The upstream head must be given. Make sure it is valid.
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upstream_name="$1"
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shift
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upstream=`git rev-parse --verify "${upstream_name}^0"` ||
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die "invalid upstream $upstream_name"
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unset root_flag
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upstream_arg="$upstream_name"
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else
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test -z "$newbase" && die "--root must be used with --onto"
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unset upstream_name
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unset upstream
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root_flag="--root"
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upstream_arg="$root_flag"
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fi
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# Make sure the branch to rebase onto is valid.
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onto_name=${newbase-"$upstream_name"}
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onto=$(git rev-parse --verify "${onto_name}^0") || exit
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# If a hook exists, give it a chance to interrupt
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run_pre_rebase_hook ${1+"$@"}
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run_pre_rebase_hook "$upstream_arg" "$@"
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# If the branch to rebase is given, that is the branch we will rebase
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# $branch_name -- branch being rebased, or HEAD (already detached)
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@ -362,16 +378,16 @@ run_pre_rebase_hook ${1+"$@"}
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# $head_name -- refs/heads/<that-branch> or "detached HEAD"
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switch_to=
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case "$#" in
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2)
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1)
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# Is it "rebase other $branchname" or "rebase other $commit"?
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branch_name="$2"
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switch_to="$2"
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branch_name="$1"
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switch_to="$1"
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|
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if git show-ref --verify --quiet -- "refs/heads/$2" &&
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branch=$(git rev-parse -q --verify "refs/heads/$2")
|
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if git show-ref --verify --quiet -- "refs/heads/$1" &&
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branch=$(git rev-parse -q --verify "refs/heads/$1")
|
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then
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head_name="refs/heads/$2"
|
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elif branch=$(git rev-parse -q --verify "$2")
|
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head_name="refs/heads/$1"
|
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elif branch=$(git rev-parse -q --verify "$1")
|
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then
|
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head_name="detached HEAD"
|
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else
|
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@ -393,7 +409,8 @@ case "$#" in
|
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esac
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orig_head=$branch
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|
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# Now we are rebasing commits $upstream..$branch on top of $onto
|
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# Now we are rebasing commits $upstream..$branch (or with --root,
|
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# everything leading up to $branch) on top of $onto
|
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|
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# Check if we are already based on $onto with linear history,
|
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# but this should be done only when upstream and onto are the same.
|
||||
@ -429,10 +446,17 @@ then
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||||
exit 0
|
||||
fi
|
||||
|
||||
if test -n "$rebase_root"
|
||||
then
|
||||
revisions="$onto..$orig_head"
|
||||
else
|
||||
revisions="$upstream..$orig_head"
|
||||
fi
|
||||
|
||||
if test -z "$do_merge"
|
||||
then
|
||||
git format-patch -k --stdout --full-index --ignore-if-in-upstream \
|
||||
"$upstream..$orig_head" |
|
||||
$root_flag "$revisions" |
|
||||
git am $git_am_opt --rebasing --resolvemsg="$RESOLVEMSG" &&
|
||||
move_to_original_branch
|
||||
ret=$?
|
||||
@ -455,7 +479,7 @@ echo "$orig_head" > "$dotest/orig-head"
|
||||
echo "$head_name" > "$dotest/head-name"
|
||||
|
||||
msgnum=0
|
||||
for cmt in `git rev-list --reverse --no-merges "$upstream..$orig_head"`
|
||||
for cmt in `git rev-list --reverse --no-merges "$revisions"`
|
||||
do
|
||||
msgnum=$(($msgnum + 1))
|
||||
echo "$cmt" > "$dotest/cmt.$msgnum"
|
||||
|
||||
187
t/t3412-rebase-root.sh
Executable file
187
t/t3412-rebase-root.sh
Executable file
@ -0,0 +1,187 @@
|
||||
#!/bin/sh
|
||||
|
||||
test_description='git rebase --root
|
||||
|
||||
Tests if git rebase --root --onto <newparent> can rebase the root commit.
|
||||
'
|
||||
. ./test-lib.sh
|
||||
|
||||
test_expect_success 'prepare repository' '
|
||||
echo 1 > A &&
|
||||
git add A &&
|
||||
git commit -m 1 &&
|
||||
echo 2 > A &&
|
||||
git add A &&
|
||||
git commit -m 2 &&
|
||||
git symbolic-ref HEAD refs/heads/other &&
|
||||
rm .git/index &&
|
||||
echo 3 > B &&
|
||||
git add B &&
|
||||
git commit -m 3 &&
|
||||
echo 1 > A &&
|
||||
git add A &&
|
||||
git commit -m 1b &&
|
||||
echo 4 > B &&
|
||||
git add B &&
|
||||
git commit -m 4
|
||||
'
|
||||
|
||||
test_expect_success 'rebase --root expects --onto' '
|
||||
test_must_fail git rebase --root
|
||||
'
|
||||
|
||||
test_expect_success 'setup pre-rebase hook' '
|
||||
mkdir -p .git/hooks &&
|
||||
cat >.git/hooks/pre-rebase <<EOF &&
|
||||
#!$SHELL_PATH
|
||||
echo "\$1,\$2" >.git/PRE-REBASE-INPUT
|
||||
EOF
|
||||
chmod +x .git/hooks/pre-rebase
|
||||
'
|
||||
cat > expect <<EOF
|
||||
4
|
||||
3
|
||||
2
|
||||
1
|
||||
EOF
|
||||
|
||||
test_expect_success 'rebase --root --onto <newbase>' '
|
||||
git checkout -b work &&
|
||||
git rebase --root --onto master &&
|
||||
git log --pretty=tformat:"%s" > rebased &&
|
||||
test_cmp expect rebased
|
||||
'
|
||||
|
||||
test_expect_success 'pre-rebase got correct input (1)' '
|
||||
test "z$(cat .git/PRE-REBASE-INPUT)" = z--root,
|
||||
'
|
||||
|
||||
test_expect_success 'rebase --root --onto <newbase> <branch>' '
|
||||
git branch work2 other &&
|
||||
git rebase --root --onto master work2 &&
|
||||
git log --pretty=tformat:"%s" > rebased2 &&
|
||||
test_cmp expect rebased2
|
||||
'
|
||||
|
||||
test_expect_success 'pre-rebase got correct input (2)' '
|
||||
test "z$(cat .git/PRE-REBASE-INPUT)" = z--root,work2
|
||||
'
|
||||
|
||||
test_expect_success 'rebase -i --root --onto <newbase>' '
|
||||
git checkout -b work3 other &&
|
||||
GIT_EDITOR=: git rebase -i --root --onto master &&
|
||||
git log --pretty=tformat:"%s" > rebased3 &&
|
||||
test_cmp expect rebased3
|
||||
'
|
||||
|
||||
test_expect_success 'pre-rebase got correct input (3)' '
|
||||
test "z$(cat .git/PRE-REBASE-INPUT)" = z--root,
|
||||
'
|
||||
|
||||
test_expect_success 'rebase -i --root --onto <newbase> <branch>' '
|
||||
git branch work4 other &&
|
||||
GIT_EDITOR=: git rebase -i --root --onto master work4 &&
|
||||
git log --pretty=tformat:"%s" > rebased4 &&
|
||||
test_cmp expect rebased4
|
||||
'
|
||||
|
||||
test_expect_success 'pre-rebase got correct input (4)' '
|
||||
test "z$(cat .git/PRE-REBASE-INPUT)" = z--root,work4
|
||||
'
|
||||
|
||||
test_expect_success 'rebase -i -p with linear history' '
|
||||
git checkout -b work5 other &&
|
||||
GIT_EDITOR=: git rebase -i -p --root --onto master &&
|
||||
git log --pretty=tformat:"%s" > rebased5 &&
|
||||
test_cmp expect rebased5
|
||||
'
|
||||
|
||||
test_expect_success 'pre-rebase got correct input (5)' '
|
||||
test "z$(cat .git/PRE-REBASE-INPUT)" = z--root,
|
||||
'
|
||||
|
||||
test_expect_success 'set up merge history' '
|
||||
git checkout other^ &&
|
||||
git checkout -b side &&
|
||||
echo 5 > C &&
|
||||
git add C &&
|
||||
git commit -m 5 &&
|
||||
git checkout other &&
|
||||
git merge side
|
||||
'
|
||||
|
||||
sed 's/#/ /g' > expect-side <<'EOF'
|
||||
* Merge branch 'side' into other
|
||||
|\##
|
||||
| * 5
|
||||
* | 4
|
||||
|/##
|
||||
* 3
|
||||
* 2
|
||||
* 1
|
||||
EOF
|
||||
|
||||
test_expect_success 'rebase -i -p with merge' '
|
||||
git checkout -b work6 other &&
|
||||
GIT_EDITOR=: git rebase -i -p --root --onto master &&
|
||||
git log --graph --topo-order --pretty=tformat:"%s" > rebased6 &&
|
||||
test_cmp expect-side rebased6
|
||||
'
|
||||
|
||||
test_expect_success 'set up second root and merge' '
|
||||
git symbolic-ref HEAD refs/heads/third &&
|
||||
rm .git/index &&
|
||||
rm A B C &&
|
||||
echo 6 > D &&
|
||||
git add D &&
|
||||
git commit -m 6 &&
|
||||
git checkout other &&
|
||||
git merge third
|
||||
'
|
||||
|
||||
sed 's/#/ /g' > expect-third <<'EOF'
|
||||
* Merge branch 'third' into other
|
||||
|\##
|
||||
| * 6
|
||||
* | Merge branch 'side' into other
|
||||
|\ \##
|
||||
| * | 5
|
||||
* | | 4
|
||||
|/ /##
|
||||
* | 3
|
||||
|/##
|
||||
* 2
|
||||
* 1
|
||||
EOF
|
||||
|
||||
test_expect_success 'rebase -i -p with two roots' '
|
||||
git checkout -b work7 other &&
|
||||
GIT_EDITOR=: git rebase -i -p --root --onto master &&
|
||||
git log --graph --topo-order --pretty=tformat:"%s" > rebased7 &&
|
||||
test_cmp expect-third rebased7
|
||||
'
|
||||
|
||||
test_expect_success 'setup pre-rebase hook that fails' '
|
||||
mkdir -p .git/hooks &&
|
||||
cat >.git/hooks/pre-rebase <<EOF &&
|
||||
#!$SHELL_PATH
|
||||
false
|
||||
EOF
|
||||
chmod +x .git/hooks/pre-rebase
|
||||
'
|
||||
|
||||
test_expect_success 'pre-rebase hook stops rebase' '
|
||||
git checkout -b stops1 other &&
|
||||
GIT_EDITOR=: test_must_fail git rebase --root --onto master &&
|
||||
test "z$(git symbolic-ref HEAD)" = zrefs/heads/stops1
|
||||
test 0 = $(git rev-list other...stops1 | wc -l)
|
||||
'
|
||||
|
||||
test_expect_success 'pre-rebase hook stops rebase -i' '
|
||||
git checkout -b stops2 other &&
|
||||
GIT_EDITOR=: test_must_fail git rebase --root --onto master &&
|
||||
test "z$(git symbolic-ref HEAD)" = zrefs/heads/stops2
|
||||
test 0 = $(git rev-list other...stops2 | wc -l)
|
||||
'
|
||||
|
||||
test_done
|
||||
Loading…
Reference in New Issue
Block a user