rebase: turn rebaseskipobsolete on by default
Consider the following use case. User has a set of commits he wants to rebase
onto some destination. Some of the commits in the set are already rebased
and their new versions are now among the ancestors of destination. Traditional
rebase behavior would make the rebase and effectively try to apply older
versions of these commits on top of newer versions, like this:
a` --> b --> a`
(where both 'a`' and 'a``' are rebased versions of 'a')
This is not desired since 'b' might have made changes to 'a`' which can now
result in merge conflicts. We can avoid these merge conflicts since we know
that 'a``' is an older version of 'a`', so we don't even need to put it on top
of 'b'. Rebaseskipobsolete allows us to do exactly that.
Another undesired effect of a pure rebase is that now 'a`' and 'a``' are both
successors to 'a' which is a divergence. We don't want that and not rebasing
'a' the second time allows to avoid it.
This was not enabled by default initially because we wanted to have some more
experience with it. After months of painless usages in multiple places, we are
confident enough to turn it on my default.
$ echo "[extensions]" >> $HGRCPATH
$ echo "purge=" >> $HGRCPATH
$ shortlog() {
> hg log -G --template '{rev}:{node|short} {author} {date|hgdate} - {branch} - {desc|firstline}\n'
> }
Test --bypass with other options
$ hg init repo-options
$ cd repo-options
$ echo a > a
$ hg ci -Am adda
adding a
$ echo a >> a
$ hg branch foo
marked working directory as branch foo
(branches are permanent and global, did you want a bookmark?)
$ hg ci -Am changea
$ hg export . > ../test.diff
$ hg up null
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
Test importing an existing revision
(this also tests that "hg import" disallows combination of '--exact'
and '--edit')
$ hg import --bypass --exact --edit ../test.diff
abort: cannot use --exact with --edit
[255]
$ hg import --bypass --exact ../test.diff
applying ../test.diff
$ shortlog
o 1:4e322f7ce8e3 test 0 0 - foo - changea
|
o 0:07f494440405 test 0 0 - default - adda
Test failure without --exact
$ hg import --bypass ../test.diff
applying ../test.diff
unable to find 'a' for patching
abort: patch failed to apply
[255]
$ hg st
$ shortlog
o 1:4e322f7ce8e3 test 0 0 - foo - changea
|
o 0:07f494440405 test 0 0 - default - adda
Test --user, --date and --message
$ hg up 0
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg import --bypass --u test2 -d '1 0' -m patch2 ../test.diff
applying ../test.diff
$ cat .hg/last-message.txt
patch2 (no-eol)
$ shortlog
o 2:2e127d1da504 test2 1 0 - default - patch2
|
| o 1:4e322f7ce8e3 test 0 0 - foo - changea
|/
@ 0:07f494440405 test 0 0 - default - adda
$ hg rollback
repository tip rolled back to revision 1 (undo import)
Test --import-branch
(this also tests that editor is not invoked for '--bypass', if the
patch contains the commit message, regardless of '--edit')
$ HGEDITOR=cat hg import --bypass --import-branch --edit ../test.diff
applying ../test.diff
$ shortlog
o 1:4e322f7ce8e3 test 0 0 - foo - changea
|
@ 0:07f494440405 test 0 0 - default - adda
$ hg rollback
repository tip rolled back to revision 1 (undo import)
Test --strip
$ hg import --bypass --strip 0 - <<EOF
> # HG changeset patch
> # User test
> # Date 0 0
> # Branch foo
> # Node ID 4e322f7ce8e3e4203950eac9ece27bf7e45ffa6c
> # Parent 07f4944404050f47db2e5c5071e0e84e7a27bba9
> changea
>
> diff -r 07f494440405 -r 4e322f7ce8e3 a
> --- a Thu Jan 01 00:00:00 1970 +0000
> +++ a Thu Jan 01 00:00:00 1970 +0000
> @@ -1,1 +1,2 @@
> a
> +a
> EOF
applying patch from stdin
$ hg rollback
repository tip rolled back to revision 1 (undo import)
Test --strip with --bypass
$ mkdir -p dir/dir2
$ echo bb > dir/dir2/b
$ echo cc > dir/dir2/c
$ echo d > dir/d
$ hg ci -Am 'addabcd'
adding dir/d
adding dir/dir2/b
adding dir/dir2/c
$ shortlog
@ 2:d805bc8236b6 test 0 0 - default - addabcd
|
| o 1:4e322f7ce8e3 test 0 0 - foo - changea
|/
o 0:07f494440405 test 0 0 - default - adda
$ hg import --bypass --strip 2 --prefix dir/ - <<EOF
> # HG changeset patch
> # User test
> # Date 0 0
> # Branch foo
> changeabcd
>
> diff --git a/foo/a b/foo/a
> new file mode 100644
> --- /dev/null
> +++ b/foo/a
> @@ -0,0 +1 @@
> +a
> diff --git a/foo/dir2/b b/foo/dir2/b2
> rename from foo/dir2/b
> rename to foo/dir2/b2
> diff --git a/foo/dir2/c b/foo/dir2/c
> --- a/foo/dir2/c
> +++ b/foo/dir2/c
> @@ -0,0 +1 @@
> +cc
> diff --git a/foo/d b/foo/d
> deleted file mode 100644
> --- a/foo/d
> +++ /dev/null
> @@ -1,1 +0,0 @@
> -d
> EOF
applying patch from stdin
$ shortlog
o 3:5bd46886ca3e test 0 0 - default - changeabcd
|
@ 2:d805bc8236b6 test 0 0 - default - addabcd
|
| o 1:4e322f7ce8e3 test 0 0 - foo - changea
|/
o 0:07f494440405 test 0 0 - default - adda
$ hg diff --change 3 --git
diff --git a/dir/a b/dir/a
new file mode 100644
--- /dev/null
+++ b/dir/a
@@ -0,0 +1,1 @@
+a
diff --git a/dir/d b/dir/d
deleted file mode 100644
--- a/dir/d
+++ /dev/null
@@ -1,1 +0,0 @@
-d
diff --git a/dir/dir2/b b/dir/dir2/b2
rename from dir/dir2/b
rename to dir/dir2/b2
diff --git a/dir/dir2/c b/dir/dir2/c
--- a/dir/dir2/c
+++ b/dir/dir2/c
@@ -1,1 +1,2 @@
cc
+cc
$ hg -q --config extensions.strip= strip .
Test unsupported combinations
$ hg import --bypass --no-commit ../test.diff
abort: cannot use --no-commit with --bypass
[255]
$ hg import --bypass --similarity 50 ../test.diff
abort: cannot use --similarity with --bypass
[255]
$ hg import --exact --prefix dir/ ../test.diff
abort: cannot use --exact with --prefix
[255]
Test commit editor
(this also tests that editor is invoked, if the patch doesn't contain
the commit message, regardless of '--edit')
$ cat > ../test.diff <<EOF
> diff -r 07f494440405 -r 4e322f7ce8e3 a
> --- a/a Thu Jan 01 00:00:00 1970 +0000
> +++ b/a Thu Jan 01 00:00:00 1970 +0000
> @@ -1,1 +1,2 @@
> -a
> +b
> +c
> EOF
$ HGEDITOR=cat hg import --bypass ../test.diff
applying ../test.diff
HG: Enter commit message. Lines beginning with 'HG:' are removed.
HG: Leave message empty to abort commit.
HG: --
HG: user: test
HG: branch 'default'
HG: changed a
abort: empty commit message
[255]
Test patch.eol is handled
(this also tests that editor is not invoked for '--bypass', if the
commit message is explicitly specified, regardless of '--edit')
$ $PYTHON -c 'file("a", "wb").write("a\r\n")'
$ hg ci -m makeacrlf
$ HGEDITOR=cat hg import -m 'should fail because of eol' --edit --bypass ../test.diff
applying ../test.diff
patching file a
Hunk #1 FAILED at 0
abort: patch failed to apply
[255]
$ hg --config patch.eol=auto import -d '0 0' -m 'test patch.eol' --bypass ../test.diff
applying ../test.diff
$ shortlog
o 3:c606edafba99 test 0 0 - default - test patch.eol
|
@ 2:872023de769d test 0 0 - default - makeacrlf
|
| o 1:4e322f7ce8e3 test 0 0 - foo - changea
|/
o 0:07f494440405 test 0 0 - default - adda
Test applying multiple patches
$ hg up -qC 0
$ echo e > e
$ hg ci -Am adde
adding e
created new head
$ hg export . > ../patch1.diff
$ hg up -qC 1
$ echo f > f
$ hg ci -Am addf
adding f
$ hg export . > ../patch2.diff
$ cd ..
$ hg clone -r1 repo-options repo-multi1
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 1 files
updating to branch foo
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd repo-multi1
$ hg up 0
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg import --bypass ../patch1.diff ../patch2.diff
applying ../patch1.diff
applying ../patch2.diff
$ shortlog
o 3:bc8ca3f8a7c4 test 0 0 - default - addf
|
o 2:16581080145e test 0 0 - default - adde
|
| o 1:4e322f7ce8e3 test 0 0 - foo - changea
|/
@ 0:07f494440405 test 0 0 - default - adda
Test applying multiple patches with --exact
$ cd ..
$ hg clone -r1 repo-options repo-multi2
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 1 files
updating to branch foo
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd repo-multi2
$ hg import --bypass --exact ../patch1.diff ../patch2.diff
applying ../patch1.diff
applying ../patch2.diff
$ shortlog
o 3:d60cb8989666 test 0 0 - foo - addf
|
| o 2:16581080145e test 0 0 - default - adde
| |
@ | 1:4e322f7ce8e3 test 0 0 - foo - changea
|/
o 0:07f494440405 test 0 0 - default - adda
$ cd ..
Test avoiding editor invocation at applying the patch with --exact
even if commit message is empty
$ cd repo-options
$ echo a >> a
$ hg commit -m ' '
$ hg tip -T "{node}\n"
1b77bc7d1db9f0e7f1716d515b630516ab386c89
$ hg export -o ../empty-log.diff .
$ hg update -q -C ".^1"
$ hg --config extensions.strip= strip -q tip
$ HGEDITOR=cat hg import --exact --bypass ../empty-log.diff
applying ../empty-log.diff
$ hg tip -T "{node}\n"
1b77bc7d1db9f0e7f1716d515b630516ab386c89
$ cd ..
#if symlink execbit
Test complicated patch with --exact
$ hg init repo-exact
$ cd repo-exact
$ echo a > a
$ echo c > c
$ echo d > d
$ echo e > e
$ echo f > f
$ chmod +x f
$ ln -s c linkc
$ hg ci -Am t
adding a
adding c
adding d
adding e
adding f
adding linkc
$ hg cp a aa1
$ echo b >> a
$ echo b > b
$ hg add b
$ hg cp a aa2
$ echo aa >> aa2
$ chmod +x e
$ chmod -x f
$ ln -s a linka
$ hg rm d
$ hg rm linkc
$ hg mv c cc
$ hg ci -m patch
$ hg export --git . > ../test.diff
$ hg up -C null
0 files updated, 0 files merged, 7 files removed, 0 files unresolved
$ hg purge
$ hg st
$ hg import --bypass --exact ../test.diff
applying ../test.diff
The patch should have matched the exported revision and generated no additional
data. If not, diff both heads to debug it.
$ shortlog
o 1:2978fd5c8aa4 test 0 0 - default - patch
|
o 0:a0e19e636a43 test 0 0 - default - t
#endif
$ cd ..