"git rebase -i" can be very dangerous if used on an already published
history. This code detects that one is rewriting a commit that is an
ancestor of a remote-tracking branch, and warns the user through the
editor. This feature is controlled by a new config key
rebase.checkremoterefs.
Signed-off-by: Lucien Kong <Lucien.Kong@xxxxxxxxxxxxxxx>
Signed-off-by: Valentin Duperray <Valentin.Duperray@xxxxxxxxxxxxxxx>
Signed-off-by: Franck Jonas <Franck.Jonas@xxxxxxxxxxxxxxx>
Signed-off-by: Thomas Nguy <Thomas.Nguy@xxxxxxxxxxxxxxx>
Signed-off-by: Huynh Khoi Nguyen Nguyen <Huynh-Khoi-Nguyen.Nguyen@xxxxxxxxxxxxxxx>
Signed-off-by: Matthieu Moy <Matthieu.Moy@xxxxxxxxxxxxxxx>
---
Documentation/config.txt | 5 +++++
Documentation/git-rebase.txt | 5 +++++
git-rebase--interactive.sh | 22 ++++++++++++++++++++++
git-rebase.sh | 2 ++
t/lib-rebase.sh | 11 +++++++++++
t/t3404-rebase-interactive.sh | 29 +++++++++++++++++++++++++++++
6 files changed, 74 insertions(+), 0 deletions(-)
diff --git a/Documentation/config.txt b/Documentation/config.txt
index 915cb5a..e47f6e0 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -1753,6 +1753,11 @@ rebase.stat::
rebase.autosquash::
If set to true enable '--autosquash' option by default.
+rebase.checkremoterefs::
+ If it is set to 'true', git rebase -i will show after each
+ commit ancestor of a remote-tracking branch the name of these
+ branches through the editor.
+
receive.autogc::
By default, git-receive-pack will run "git-gc --auto" after
receiving data from git-push and updating refs. You can stop
diff --git a/Documentation/git-rebase.txt b/Documentation/git-rebase.txt
index 147fa1a..b68a80b 100644
--- a/Documentation/git-rebase.txt
+++ b/Documentation/git-rebase.txt
@@ -208,6 +208,11 @@ rebase.stat::
rebase.autosquash::
If set to true enable '--autosquash' option by default.
+rebase.checkremoterefs::
+ If it is set to 'true', git rebase -i will show after each
+ commit ancestor of a remote-tracking branch the name of these
+ branches through the editor.
+
OPTIONS
-------
<newbase>::
diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index 0c19b7c..ad6f8a7 100644
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -684,6 +684,27 @@ rearrange_squash () {
rm -f "$1.sq" "$1.rearranged"
}
+# Add the name the branches after each pick, fixup or squash commit that
+# is an ancestor of a remote-tracking branch.
+add_remoterefs () {
+ while read -r command sha1 message
+ do
+ printf '%s\n' "$command $sha1 $message"
+ git branch -r --contains "$sha1" >"$1.branch"
+ if test -s "$1.branch"
+ then
+ printf "# Commit above this line appear in:"
+ while read -r branch
+ do
+ printf " $branch"
+ done <"$1.branch"
+ printf '\n'
+ fi
+ done >"$1.published" <"$1"
+ cat "$1.published" >"$1"
+ rm -f "$1.published" "$1.branch"
+}
+
case "$action" in
continue)
# do we have anything to commit?
@@ -857,6 +878,7 @@ fi
test -s "$todo" || echo noop >> "$todo"
test -n "$autosquash" && rearrange_squash "$todo"
+test -n "$checkremoterefs" && add_remoterefs "$todo"
cat >> "$todo" << EOF
# Rebase $shortrevisions onto $shortonto
diff --git a/git-rebase.sh b/git-rebase.sh
index e616737..f8675b5 100755
--- a/git-rebase.sh
+++ b/git-rebase.sh
@@ -99,7 +99,9 @@ action=
preserve_merges=
autosquash=
keep_empty=
+checkremoterefs=
test "$(git config --bool rebase.autosquash)" = "true" && autosquash=t
+test "$(git config --bool rebase.checkremoterefs)" = "true" && checkremoterefs=t
read_basic_state () {
head_name=$(cat "$state_dir"/head-name) &&
diff --git a/t/lib-rebase.sh b/t/lib-rebase.sh
index 6ccf797..4906867 100644
--- a/t/lib-rebase.sh
+++ b/t/lib-rebase.sh
@@ -65,3 +65,14 @@ EOF
test_set_editor "$(pwd)/fake-editor.sh"
chmod a+x fake-editor.sh
}
+
+
+set_copy_editor () {
+ echo "#!$SHELL_PATH" >editor.sh
+ cat >> editor.sh <<\EOF
+cat "$1" >"$TODO_DUMP"
+EOF
+
+ test_set_editor "$(pwd)/editor.sh"
+ chmod a+x editor.sh
+}
diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
index 025c1c6..f99c0c2 100755
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -755,4 +755,33 @@ test_expect_success 'rebase-i history with funny messages' '
test_cmp expect actual
'
+test_expect_success 'warn before rewriting published history' '
+ test_when_finished "rm -rf git.git git" &&
+ git init git.git &&
+ git clone git &&
+ (
+ cd git &&
+ git config rebase.checkremoterefs true &&
+ test_commit one_commit main.txt one_commit &&
+ test_commit two_commit main.txt two_commit &&
+ test_commit three_commit main.txt three_commit &&
+ git push --all &&
+ test_commit four_commit main.txt four_commit &&
+ set_copy_editor &&
+ TODO_DUMP=actual EDITOR=./editor.sh git rebase -i HEAD~3 &&
+ tmp=$(cat actual | sed -n 1,5p) &&
+ echo "$tmp" >actual &&
+ tmp=$(git cherry --abbrev=7 HEAD~3 | sed -e 's/+[[:space:]]//g') &&
+ two_sha1=$(echo "$tmp" | sed -n 1p) &&
+ three_sha1=$(echo "$tmp" | sed -n 2p) &&
+ four_sha1=$(echo "$tmp" | sed -n 3p) &&
+ echo "pick $two_sha1 two_commit" >expected &&
+ echo "# Commit above this line appear in: origin/master" >>expected &&
+ echo "pick $three_sha1 three_commit" >>expected &&
+ echo "# Commit above this line appear in: origin/master" >>expected &&
+ echo "pick $four_sha1 four_commit" >>expected &&
+ test_cmp expected actual
+ )
+'
+
test_done
--
1.7.8
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