On 28/02/2018 02:33, Igor Djordjevic wrote:
>
> This seems to be working inside my (too trivial?) test case, for
> interactive adding, dropping, and amending of rebased commits,
> resulting "rebased" merge containing all the added/modified/dropped
> changes, plus the original merge amendment, all as expected :P
In case anyone has a wish to examine my (now pretty messy) test
script, here it is - sorry for not having time to clean it up! :(
What I get when I diff original and "rebased" merge is this:
diff --git a/test.txt b/test.txt
index a82470b..d458032 100644
--- a/test.txt
+++ b/test.txt
@@ -1,10 +1,14 @@
+A21
+A22
+A23
+A24
+A25
A1
A2
-B11
+B1111
A3
A4
A5
-B12
A6
A7
A8
@@ -14,6 +18,7 @@ A10
A11
A12
A13
+BX
A14
B2
A15
... where A21 to A25 are additions due to new base, B11 was
interactively amended to B1111, B12 was interactively dropped, and BX
interactively added :)
We don`t see line X here, being an "evil merge" amendment being
correctly preserved from original merge commit (thus not a
difference). If we do `git show` of the "rebased" merge, we get this,
as expected:
diff --cc test.txt
index b173cef,fad39a8..d458032
--- a/test.txt
+++ b/test.txt
@@@ -13,6 -13,6 +13,7 @@@ A
A7
A8
A9
++X
A10
A11
A12
Regards, Buga
-- 8< --
#!/bin/sh
# rm -rf ./.git
# rm -f ./test.txt
git init
touch ./test.txt
git add -- test.txt
for i in {1..20}
do
echo A$i >>test.txt
git commit -am "A$i"
done
git checkout -b b1
sed -i '3iB11' test.txt
git commit -am "B11"
sed -i '7iB12' test.txt
git commit -am "B12"
git checkout -b b2 HEAD^
sed -i '16iB2' test.txt
git commit -am "B2"
git checkout -b merge b1
git merge --no-commit b2
sed -i '12iX' test.txt # amend merge commit
git commit -am "M"
git tag original-merge
git checkout master
for i in {1..5}
do
j=`expr "$i" + 20`
sed -i "${i}iA${j}" test.txt
git commit -am "A$j"
done
# simple/naive demonstration of proposed merge rebasing logic
# using described "Trivial Merge" (TM, or "Angel Merge"),
# preserving merge commit manual amendments, but still respecting
# interactively rebased added/modified/dropped commits :)
# read -p "Press enter to continue"
git checkout b1
git cherry-pick -m1 original-merge && git tag U1
git reset --hard HEAD^^ # drop U1 and last b1 commit
sed -i '/B11/c\B1111' test.txt
git commit -a --amend --no-edit
git rebase master
git cherry-pick U1 && git tag U1-prime
# read -p "Press enter to continue"
git checkout b2
git cherry-pick -m2 original-merge && git tag U2
git reset --hard HEAD^ # drop U2
git rebase master
sed -i '20iBX' test.txt
git commit -am "BX" # add new commit
git cherry-pick U2 && git tag U2-prime
git diff U1 U1-prime | git apply --3way && git commit -m "U2-second" && git tag U2-second
git checkout b1
git diff U2 U2-prime | git apply --3way && git commit -m "U1-second" && git tag U1-second
# read -p "Press enter to continue"
git branch -f merge b1
git checkout merge
git merge b2 --no-commit
git commit -a --reuse-message original-merge
git tag angel-merge
# read -p "Press enter to continue"
git reset --hard b1^
git read-tree --reset angel-merge
git update-ref refs/heads/merge "$(git show -s --format=%B original-merge | git commit-tree "$(git write-tree)" -p "$(git rev-parse b1^^)" -p "$(git rev-parse b2^^)")"
git tag -f angel-merge
git checkout angel-merge .
git branch -f b1 b1^^
git branch -f b2 b2^^
# show resulting graph
echo
git log --all --decorate --oneline --graph
# comparison between original merge and rebased merge,
# showing merge commit amendment "X" being preserved during rebase
# (not shown in diff)
echo
echo 'diff original-merge angel-merge:'
git diff original-merge angel-merge
