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view tests/test-import.t @ 30155:b7a966ce89ed
changelog: disable delta chains
This patch disables delta chains on changelogs. After this patch, new
entries on changelogs - including existing changelogs - will be stored
as the fulltext of that data (likely compressed). No delta computation
will be performed.
An overview of delta chains and data justifying this change follows.
Revlogs try to store entries as a delta against a previous entry (either
a parent revision in the case of generaldelta or the previous physical
revision when not using generaldelta). Most of the time this is the
correct thing to do: it frequently results in less CPU usage and smaller
storage.
Delta chains are most effective when the base revision being deltad
against is similar to the current data. This tends to occur naturally
for manifests and file data, since only small parts of each tend to
change with each revision. Changelogs, however, are a different story.
Changelog entries represent changesets/commits. And unless commits in a
repository are homogonous (same author, changing same files, similar
commit messages, etc), a delta from one entry to the next tends to be
relatively large compared to the size of the entry. This means that
delta chains tend to be short. How short? Here is the full vs delta
revision breakdown on some real world repos:
Repo % Full % Delta Max Length
hg 45.8 54.2 6
mozilla-central 42.4 57.6 8
mozilla-unified 42.5 57.5 17
pypy 46.1 53.9 6
python-zstandard 46.1 53.9 3
(I threw in python-zstandard as an example of a repo that is homogonous.
It contains a small Python project with changes all from the same
author.)
Contrast this with the manifest revlog for these repos, where 99+% of
revisions are deltas and delta chains run into the thousands.
So delta chains aren't as useful on changelogs. But even a short delta
chain may provide benefits. Let's measure that.
Delta chains may require less CPU to read revisions if the CPU time
spent reading smaller deltas is less than the CPU time used to
decompress larger individual entries. We can measure this via
`hg perfrevlog -c -d 1` to iterate a revlog to resolve each revision's
fulltext. Here are the results of that command on a repo using delta
chains in its changelog and on a repo without delta chains:
hg (forward)
! wall 0.407008 comb 0.410000 user 0.410000 sys 0.000000 (best of 25)
! wall 0.390061 comb 0.390000 user 0.390000 sys 0.000000 (best of 26)
hg (reverse)
! wall 0.515221 comb 0.520000 user 0.520000 sys 0.000000 (best of 19)
! wall 0.400018 comb 0.400000 user 0.390000 sys 0.010000 (best of 25)
mozilla-central (forward)
! wall 4.508296 comb 4.490000 user 4.490000 sys 0.000000 (best of 3)
! wall 4.370222 comb 4.370000 user 4.350000 sys 0.020000 (best of 3)
mozilla-central (reverse)
! wall 5.758995 comb 5.760000 user 5.720000 sys 0.040000 (best of 3)
! wall 4.346503 comb 4.340000 user 4.320000 sys 0.020000 (best of 3)
mozilla-unified (forward)
! wall 4.957088 comb 4.950000 user 4.940000 sys 0.010000 (best of 3)
! wall 4.660528 comb 4.650000 user 4.630000 sys 0.020000 (best of 3)
mozilla-unified (reverse)
! wall 6.119827 comb 6.110000 user 6.090000 sys 0.020000 (best of 3)
! wall 4.675136 comb 4.670000 user 4.670000 sys 0.000000 (best of 3)
pypy (forward)
! wall 1.231122 comb 1.240000 user 1.230000 sys 0.010000 (best of 8)
! wall 1.164896 comb 1.160000 user 1.160000 sys 0.000000 (best of 9)
pypy (reverse)
! wall 1.467049 comb 1.460000 user 1.460000 sys 0.000000 (best of 7)
! wall 1.160200 comb 1.170000 user 1.160000 sys 0.010000 (best of 9)
The data clearly shows that it takes less wall and CPU time to resolve
revisions when there are no delta chains in the changelogs, regardless
of the direction of traversal. Furthermore, not using a delta chain
means that fulltext resolution in reverse is as fast as iterating
forward. So not using delta chains on the changelog is a clear CPU win
for reading operations.
An example of a user-visible operation showing this speed-up is revset
evaluation. Here are results for
`hg perfrevset 'author(gps) or author(mpm)'`:
hg
! wall 1.655506 comb 1.660000 user 1.650000 sys 0.010000 (best of 6)
! wall 1.612723 comb 1.610000 user 1.600000 sys 0.010000 (best of 7)
mozilla-central
! wall 17.629826 comb 17.640000 user 17.600000 sys 0.040000 (best of 3)
! wall 17.311033 comb 17.300000 user 17.260000 sys 0.040000 (best of 3)
What about 00changelog.i size?
Repo Delta Chains No Delta Chains
hg 7,033,250 6,976,771
mozilla-central 82,978,748 81,574,623
mozilla-unified 88,112,349 86,702,162
pypy 20,740,699 20,659,741
The data shows that removing delta chains from the changelog makes the
changelog smaller.
Delta chains are also used during changegroup generation. This
operation essentially converts a series of revisions to one large
delta chain. And changegroup generation is smart: if the delta in
the revlog matches what the changegroup is emitting, it will reuse
the delta instead of recalculating it. We can measure the impact
removing changelog delta chains has on changegroup generation via
`hg perfchangegroupchangelog`:
hg
! wall 1.589245 comb 1.590000 user 1.590000 sys 0.000000 (best of 7)
! wall 1.788060 comb 1.790000 user 1.790000 sys 0.000000 (best of 6)
mozilla-central
! wall 17.382585 comb 17.380000 user 17.340000 sys 0.040000 (best of 3)
! wall 20.161357 comb 20.160000 user 20.120000 sys 0.040000 (best of 3)
mozilla-unified
! wall 18.722839 comb 18.720000 user 18.680000 sys 0.040000 (best of 3)
! wall 21.168075 comb 21.170000 user 21.130000 sys 0.040000 (best of 3)
pypy
! wall 4.828317 comb 4.830000 user 4.820000 sys 0.010000 (best of 3)
! wall 5.415455 comb 5.420000 user 5.410000 sys 0.010000 (best of 3)
The data shows eliminating delta chains makes the changelog part of
changegroup generation slower. This is expected since we now have to
compute deltas for revisions where we could recycle the delta before.
It is worth putting this regression into context of overall changegroup
times. Here is the rough total CPU time spent in changegroup generation
for various repos while using delta chains on the changelog:
Repo CPU Time (s) CPU Time w/ compression
hg 4.50 7.05
mozilla-central 111.1 222.0
pypy 28.68 75.5
Before compression, removing delta chains from the changegroup adds
~4.4% overhead to hg changegroup generation, 1.3% to mozilla-central,
and 2.0% to pypy. When you factor in zlib compression, these percentages
are roughly divided by 2.
While the increased CPU usage for changegroup generation is unfortunate,
I think it is acceptable because the percentage is small, server
operators (those likely impacted most by this) have other mechanisms
to mitigate CPU consumption (namely reducing zlib compression level and
pre-generated clone bundles), and because there is room to optimize this
in the future. For example, we could use the nullid as the base revision,
effectively encoding the full revision for each entry in the changegroup.
When doing this, `hg perfchangegroupchangelog` nearly halves:
mozilla-unified
! wall 21.168075 comb 21.170000 user 21.130000 sys 0.040000 (best of 3)
! wall 11.196461 comb 11.200000 user 11.190000 sys 0.010000 (best of 3)
This looks very promising as a future optimization opportunity.
It's worth that the changes in test-acl.t to the changegroup part size.
This is because revision 6 in the changegroup had a delta chain of
length 2 before and after this patch the base revision is nullrev.
When the base revision is nullrev, cg2packer.deltaparent() hardcodes
the *previous* revision from the changegroup as the delta parent.
This caused the delta in the changegroup to switch base revisions,
the delta to change, and the size to change accordingly. While the
size increased in this case, I think sizes will remain the same
on average, as the delta base for changelog revisions doesn't matter
too much (as this patch shows). So, I don't consider this a regression.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Thu, 13 Oct 2016 12:50:27 +0200 |
parents | 173bdb502503 |
children | 318a24b52eeb |
line wrap: on
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$ hg init a $ mkdir a/d1 $ mkdir a/d1/d2 $ echo line 1 > a/a $ echo line 1 > a/d1/d2/a $ hg --cwd a ci -Ama adding a adding d1/d2/a $ echo line 2 >> a/a $ hg --cwd a ci -u someone -d '1 0' -m'second change' import with no args: $ hg --cwd a import abort: need at least one patch to import [255] generate patches for the test $ hg --cwd a export tip > exported-tip.patch $ hg --cwd a diff -r0:1 > diffed-tip.patch import exported patch (this also tests that editor is not invoked, if the patch contains the commit message and '--edit' is not specified) $ hg clone -r0 a b adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ HGEDITOR=cat hg --cwd b import ../exported-tip.patch applying ../exported-tip.patch message and committer and date should be same $ hg --cwd b tip changeset: 1:1d4bd90af0e4 tag: tip user: someone date: Thu Jan 01 00:00:01 1970 +0000 summary: second change $ rm -r b import exported patch with external patcher (this also tests that editor is invoked, if the '--edit' is specified, regardless of the commit message in the patch) $ cat > dummypatch.py <<EOF > from __future__ import print_function > print('patching file a') > file('a', 'wb').write('line2\n') > EOF $ hg clone -r0 a b adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ HGEDITOR=cat hg --config ui.patch='python ../dummypatch.py' --cwd b import --edit ../exported-tip.patch applying ../exported-tip.patch second change HG: Enter commit message. Lines beginning with 'HG:' are removed. HG: Leave message empty to abort commit. HG: -- HG: user: someone HG: branch 'default' HG: changed a $ cat b/a line2 $ rm -r b import of plain diff should fail without message (this also tests that editor is invoked, if the patch doesn't contain the commit message, regardless of '--edit') $ hg clone -r0 a b adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cat > $TESTTMP/editor.sh <<EOF > env | grep HGEDITFORM > cat \$1 > EOF $ HGEDITOR="sh $TESTTMP/editor.sh" hg --cwd b import ../diffed-tip.patch applying ../diffed-tip.patch HGEDITFORM=import.normal.normal 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 avoiding editor invocation at applying the patch with --exact, even if commit message is empty $ echo a >> b/a $ hg --cwd b commit -m ' ' $ hg --cwd b tip -T "{node}\n" d8804f3f5396d800812f579c8452796a5993bdb2 $ hg --cwd b export -o ../empty-log.diff . $ hg --cwd b update -q -C ".^1" $ hg --cwd b --config extensions.strip= strip -q tip $ HGEDITOR=cat hg --cwd b import --exact ../empty-log.diff applying ../empty-log.diff $ hg --cwd b tip -T "{node}\n" d8804f3f5396d800812f579c8452796a5993bdb2 $ rm -r b import of plain diff should be ok with message $ hg clone -r0 a b adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg --cwd b import -mpatch ../diffed-tip.patch applying ../diffed-tip.patch $ rm -r b import of plain diff with specific date and user (this also tests that editor is not invoked, if '--message'/'--logfile' is specified and '--edit' is not) $ hg clone -r0 a b adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg --cwd b import -mpatch -d '1 0' -u 'user@nowhere.net' ../diffed-tip.patch applying ../diffed-tip.patch $ hg -R b tip -pv changeset: 1:ca68f19f3a40 tag: tip user: user@nowhere.net date: Thu Jan 01 00:00:01 1970 +0000 files: a description: patch diff -r 80971e65b431 -r ca68f19f3a40 a --- a/a Thu Jan 01 00:00:00 1970 +0000 +++ b/a Thu Jan 01 00:00:01 1970 +0000 @@ -1,1 +1,2 @@ line 1 +line 2 $ rm -r b import of plain diff should be ok with --no-commit (this also tests that editor is not invoked, if '--no-commit' is specified, regardless of '--edit') $ hg clone -r0 a b adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ HGEDITOR=cat hg --cwd b import --no-commit --edit ../diffed-tip.patch applying ../diffed-tip.patch $ hg --cwd b diff --nodates diff -r 80971e65b431 a --- a/a +++ b/a @@ -1,1 +1,2 @@ line 1 +line 2 $ rm -r b import of malformed plain diff should fail $ hg clone -r0 a b adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ sed 's/1,1/foo/' < diffed-tip.patch > broken.patch $ hg --cwd b import -mpatch ../broken.patch applying ../broken.patch abort: bad hunk #1 [255] $ rm -r b hg -R repo import put the clone in a subdir - having a directory named "a" used to hide a bug. $ mkdir dir $ hg clone -r0 a dir/b adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd dir $ hg -R b import ../exported-tip.patch applying ../exported-tip.patch $ cd .. $ rm -r dir import from stdin $ hg clone -r0 a b adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg --cwd b import - < exported-tip.patch applying patch from stdin $ rm -r b import two patches in one stream $ hg init b $ hg --cwd a export 0:tip | hg --cwd b import - applying patch from stdin $ hg --cwd a id 1d4bd90af0e4 tip $ hg --cwd b id 1d4bd90af0e4 tip $ rm -r b override commit message $ hg clone -r0 a b adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg --cwd b import -m 'override' - < exported-tip.patch applying patch from stdin $ hg --cwd b tip | grep override summary: override $ rm -r b $ cat > mkmsg.py <<EOF > import email.Message, sys > msg = email.Message.Message() > patch = open(sys.argv[1], 'rb').read() > msg.set_payload('email commit message\n' + patch) > msg['Subject'] = 'email patch' > msg['From'] = 'email patcher' > file(sys.argv[2], 'wb').write(msg.as_string()) > EOF plain diff in email, subject, message body $ hg clone -r0 a b adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ python mkmsg.py diffed-tip.patch msg.patch $ hg --cwd b import ../msg.patch applying ../msg.patch $ hg --cwd b tip | grep email user: email patcher summary: email patch $ rm -r b plain diff in email, no subject, message body $ hg clone -r0 a b adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ grep -v '^Subject:' msg.patch | hg --cwd b import - applying patch from stdin $ rm -r b plain diff in email, subject, no message body $ hg clone -r0 a b adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ grep -v '^email ' msg.patch | hg --cwd b import - applying patch from stdin $ rm -r b plain diff in email, no subject, no message body, should fail $ hg clone -r0 a b adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ egrep -v '^(Subject|email)' msg.patch | hg --cwd b import - applying patch from stdin abort: empty commit message [255] $ rm -r b hg export in email, should use patch header $ hg clone -r0 a b adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ python mkmsg.py exported-tip.patch msg.patch $ cat msg.patch | hg --cwd b import - applying patch from stdin $ hg --cwd b tip | grep second summary: second change $ rm -r b subject: duplicate detection, removal of [PATCH] The '---' tests the gitsendmail handling without proper mail headers $ cat > mkmsg2.py <<EOF > import email.Message, sys > msg = email.Message.Message() > patch = open(sys.argv[1], 'rb').read() > msg.set_payload('email patch\n\nnext line\n---\n' + patch) > msg['Subject'] = '[PATCH] email patch' > msg['From'] = 'email patcher' > file(sys.argv[2], 'wb').write(msg.as_string()) > EOF plain diff in email, [PATCH] subject, message body with subject $ hg clone -r0 a b adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ python mkmsg2.py diffed-tip.patch msg.patch $ cat msg.patch | hg --cwd b import - applying patch from stdin $ hg --cwd b tip --template '{desc}\n' email patch next line $ rm -r b Issue963: Parent of working dir incorrect after import of multiple patches and rollback We weren't backing up the correct dirstate file when importing many patches: import patch1 patch2; rollback $ echo line 3 >> a/a $ hg --cwd a ci -m'third change' $ hg --cwd a export -o '../patch%R' 1 2 $ hg clone -qr0 a b $ hg --cwd b parents --template 'parent: {rev}\n' parent: 0 $ hg --cwd b import -v ../patch1 ../patch2 applying ../patch1 patching file a committing files: a committing manifest committing changelog created 1d4bd90af0e4 applying ../patch2 patching file a committing files: a committing manifest committing changelog created 6d019af21222 $ hg --cwd b rollback repository tip rolled back to revision 0 (undo import) working directory now based on revision 0 $ hg --cwd b parents --template 'parent: {rev}\n' parent: 0 Test that "hg rollback" doesn't restore dirstate to one at the beginning of the rollbacked transaction in not-"parent-gone" case. invoking pretxncommit hook will cause marking '.hg/dirstate' as a file to be restored at rollbacking, after DirstateTransactionPlan (see wiki page for detail). $ hg --cwd b branch -q foobar $ hg --cwd b commit -m foobar $ hg --cwd b update 0 -q $ hg --cwd b import ../patch1 ../patch2 --config hooks.pretxncommit=true applying ../patch1 applying ../patch2 $ hg --cwd b update -q 1 $ hg --cwd b rollback -q $ hg --cwd b parents --template 'parent: {rev}\n' parent: 1 $ hg --cwd b update -q -C 0 $ hg --cwd b --config extensions.strip= strip -q 1 Test visibility of in-memory distate changes inside transaction to external process $ echo foo > a/foo $ hg --cwd a commit -A -m 'adding foo' foo $ hg --cwd a export -o '../patch%R' 3 $ cat > $TESTTMP/checkvisibility.sh <<EOF > echo "====" > hg parents --template "VISIBLE {rev}:{node|short}\n" > hg status -amr > # test that pending changes are hidden > unset HG_PENDING > hg parents --template "ACTUAL {rev}:{node|short}\n" > hg status -amr > echo "====" > EOF == test visibility to external editor $ (cd b && sh "$TESTTMP/checkvisibility.sh") ==== VISIBLE 0:80971e65b431 ACTUAL 0:80971e65b431 ==== $ HGEDITOR="sh $TESTTMP/checkvisibility.sh" hg --cwd b import -v --edit ../patch1 ../patch2 ../patch3 applying ../patch1 patching file a ==== VISIBLE 0:80971e65b431 M a ACTUAL 0:80971e65b431 M a ==== committing files: a committing manifest committing changelog created 1d4bd90af0e4 applying ../patch2 patching file a ==== VISIBLE 1:1d4bd90af0e4 M a ACTUAL 0:80971e65b431 M a ==== committing files: a committing manifest committing changelog created 6d019af21222 applying ../patch3 patching file foo adding foo ==== VISIBLE 2:6d019af21222 A foo ACTUAL 0:80971e65b431 M a ==== committing files: foo committing manifest committing changelog created 55e3f75b2378 $ hg --cwd b rollback -q (content of file "a" is already changed and it should be recognized as "M", even though dirstate is restored to one before "hg import") $ (cd b && sh "$TESTTMP/checkvisibility.sh") ==== VISIBLE 0:80971e65b431 M a ACTUAL 0:80971e65b431 M a ==== $ hg --cwd b revert --no-backup a $ rm -f b/foo == test visibility to precommit external hook $ cat >> b/.hg/hgrc <<EOF > [hooks] > precommit.visibility = sh $TESTTMP/checkvisibility.sh > EOF $ (cd b && sh "$TESTTMP/checkvisibility.sh") ==== VISIBLE 0:80971e65b431 ACTUAL 0:80971e65b431 ==== $ hg --cwd b import ../patch1 ../patch2 ../patch3 applying ../patch1 ==== VISIBLE 0:80971e65b431 M a ACTUAL 0:80971e65b431 M a ==== applying ../patch2 ==== VISIBLE 1:1d4bd90af0e4 M a ACTUAL 0:80971e65b431 M a ==== applying ../patch3 ==== VISIBLE 2:6d019af21222 A foo ACTUAL 0:80971e65b431 M a ==== $ hg --cwd b rollback -q $ (cd b && sh "$TESTTMP/checkvisibility.sh") ==== VISIBLE 0:80971e65b431 M a ACTUAL 0:80971e65b431 M a ==== $ hg --cwd b revert --no-backup a $ rm -f b/foo $ cat >> b/.hg/hgrc <<EOF > [hooks] > precommit.visibility = > EOF == test visibility to pretxncommit external hook $ cat >> b/.hg/hgrc <<EOF > [hooks] > pretxncommit.visibility = sh $TESTTMP/checkvisibility.sh > EOF $ (cd b && sh "$TESTTMP/checkvisibility.sh") ==== VISIBLE 0:80971e65b431 ACTUAL 0:80971e65b431 ==== $ hg --cwd b import ../patch1 ../patch2 ../patch3 applying ../patch1 ==== VISIBLE 0:80971e65b431 M a ACTUAL 0:80971e65b431 M a ==== applying ../patch2 ==== VISIBLE 1:1d4bd90af0e4 M a ACTUAL 0:80971e65b431 M a ==== applying ../patch3 ==== VISIBLE 2:6d019af21222 A foo ACTUAL 0:80971e65b431 M a ==== $ hg --cwd b rollback -q $ (cd b && sh "$TESTTMP/checkvisibility.sh") ==== VISIBLE 0:80971e65b431 M a ACTUAL 0:80971e65b431 M a ==== $ hg --cwd b revert --no-backup a $ rm -f b/foo $ cat >> b/.hg/hgrc <<EOF > [hooks] > pretxncommit.visibility = > EOF $ rm -r b importing a patch in a subdirectory failed at the commit stage $ echo line 2 >> a/d1/d2/a $ hg --cwd a ci -u someoneelse -d '1 0' -m'subdir change' hg import in a subdirectory $ hg clone -r0 a b adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg --cwd a export tip > tmp $ sed -e 's/d1\/d2\///' < tmp > subdir-tip.patch $ dir=`pwd` $ cd b/d1/d2 2>&1 > /dev/null $ hg import ../../../subdir-tip.patch applying ../../../subdir-tip.patch $ cd "$dir" message should be 'subdir change' committer should be 'someoneelse' $ hg --cwd b tip changeset: 1:3577f5aea227 tag: tip user: someoneelse date: Thu Jan 01 00:00:01 1970 +0000 summary: subdir change should be empty $ hg --cwd b status Test fuzziness (ambiguous patch location, fuzz=2) $ hg init fuzzy $ cd fuzzy $ echo line1 > a $ echo line0 >> a $ echo line3 >> a $ hg ci -Am adda adding a $ echo line1 > a $ echo line2 >> a $ echo line0 >> a $ echo line3 >> a $ hg ci -m change a $ hg export tip > fuzzy-tip.patch $ hg up -C 0 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo line1 > a $ echo line0 >> a $ echo line1 >> a $ echo line0 >> a $ hg ci -m brancha created new head $ hg import --config patch.fuzz=0 -v fuzzy-tip.patch applying fuzzy-tip.patch patching file a Hunk #1 FAILED at 0 1 out of 1 hunks FAILED -- saving rejects to file a.rej abort: patch failed to apply [255] $ hg import --no-commit -v fuzzy-tip.patch applying fuzzy-tip.patch patching file a Hunk #1 succeeded at 2 with fuzz 1 (offset 0 lines). applied to working directory $ hg revert -a reverting a import with --no-commit should have written .hg/last-message.txt $ cat .hg/last-message.txt change (no-eol) test fuzziness with eol=auto $ hg --config patch.eol=auto import --no-commit -v fuzzy-tip.patch applying fuzzy-tip.patch patching file a Hunk #1 succeeded at 2 with fuzz 1 (offset 0 lines). applied to working directory $ cd .. Test hunk touching empty files (issue906) $ hg init empty $ cd empty $ touch a $ touch b1 $ touch c1 $ echo d > d $ hg ci -Am init adding a adding b1 adding c1 adding d $ echo a > a $ echo b > b1 $ hg mv b1 b2 $ echo c > c1 $ hg copy c1 c2 $ rm d $ touch d $ hg diff --git diff --git a/a b/a --- a/a +++ b/a @@ -0,0 +1,1 @@ +a diff --git a/b1 b/b2 rename from b1 rename to b2 --- a/b1 +++ b/b2 @@ -0,0 +1,1 @@ +b diff --git a/c1 b/c1 --- a/c1 +++ b/c1 @@ -0,0 +1,1 @@ +c diff --git a/c1 b/c2 copy from c1 copy to c2 --- a/c1 +++ b/c2 @@ -0,0 +1,1 @@ +c diff --git a/d b/d --- a/d +++ b/d @@ -1,1 +0,0 @@ -d $ hg ci -m empty $ hg export --git tip > empty.diff $ hg up -C 0 4 files updated, 0 files merged, 2 files removed, 0 files unresolved $ hg import empty.diff applying empty.diff $ for name in a b1 b2 c1 c2 d; do > echo % $name file > test -f $name && cat $name > done % a file a % b1 file % b2 file b % c1 file c % c2 file c % d file $ cd .. Test importing a patch ending with a binary file removal $ hg init binaryremoval $ cd binaryremoval $ echo a > a $ $PYTHON -c "file('b', 'wb').write('a\x00b')" $ hg ci -Am addall adding a adding b $ hg rm a $ hg rm b $ hg st R a R b $ hg ci -m remove $ hg export --git . > remove.diff $ cat remove.diff | grep git diff --git a/a b/a diff --git a/b b/b $ hg up -C 0 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg import remove.diff applying remove.diff $ hg manifest $ cd .. Issue927: test update+rename with common name $ hg init t $ cd t $ touch a $ hg ci -Am t adding a $ echo a > a Here, bfile.startswith(afile) $ hg copy a a2 $ hg ci -m copya $ hg export --git tip > copy.diff $ hg up -C 0 1 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg import copy.diff applying copy.diff a should contain an 'a' $ cat a a and a2 should have duplicated it $ cat a2 a $ cd .. test -p0 $ hg init p0 $ cd p0 $ echo a > a $ hg ci -Am t adding a $ hg import -p foo abort: invalid value 'foo' for option -p, expected int [255] $ hg import -p0 - << EOF > foobar > --- a Sat Apr 12 22:43:58 2008 -0400 > +++ a Sat Apr 12 22:44:05 2008 -0400 > @@ -1,1 +1,1 @@ > -a > +bb > EOF applying patch from stdin $ hg status $ cat a bb test --prefix $ mkdir -p dir/dir2 $ echo b > dir/dir2/b $ hg ci -Am b adding dir/dir2/b $ hg import -p2 --prefix dir - << EOF > foobar > --- drop1/drop2/dir2/b > +++ drop1/drop2/dir2/b > @@ -1,1 +1,1 @@ > -b > +cc > EOF applying patch from stdin $ hg status $ cat dir/dir2/b cc $ cd .. test paths outside repo root $ mkdir outside $ touch outside/foo $ hg init inside $ cd inside $ hg import - <<EOF > diff --git a/a b/b > rename from ../outside/foo > rename to bar > EOF applying patch from stdin abort: path contains illegal component: ../outside/foo (glob) [255] $ cd .. test import with similarity and git and strip (issue295 et al.) $ hg init sim $ cd sim $ echo 'this is a test' > a $ hg ci -Ama adding a $ cat > ../rename.diff <<EOF > diff --git a/foo/a b/foo/a > deleted file mode 100644 > --- a/foo/a > +++ /dev/null > @@ -1,1 +0,0 @@ > -this is a test > diff --git a/foo/b b/foo/b > new file mode 100644 > --- /dev/null > +++ b/foo/b > @@ -0,0 +1,2 @@ > +this is a test > +foo > EOF $ hg import --no-commit -v -s 1 ../rename.diff -p2 applying ../rename.diff patching file a patching file b adding b recording removal of a as rename to b (88% similar) applied to working directory $ hg st -C A b a R a $ hg revert -a undeleting a forgetting b $ rm b $ hg import --no-commit -v -s 100 ../rename.diff -p2 applying ../rename.diff patching file a patching file b adding b applied to working directory $ hg st -C A b R a $ cd .. Issue1495: add empty file from the end of patch $ hg init addemptyend $ cd addemptyend $ touch a $ hg addremove adding a $ hg ci -m "commit" $ cat > a.patch <<EOF > add a, b > diff --git a/a b/a > --- a/a > +++ b/a > @@ -0,0 +1,1 @@ > +a > diff --git a/b b/b > new file mode 100644 > EOF $ hg import --no-commit a.patch applying a.patch apply a good patch followed by an empty patch (mainly to ensure that dirstate is *not* updated when import crashes) $ hg update -q -C . $ rm b $ touch empty.patch $ hg import a.patch empty.patch applying a.patch applying empty.patch transaction abort! rollback completed abort: empty.patch: no diffs found [255] $ hg tip --template '{rev} {desc|firstline}\n' 0 commit $ hg -q status M a $ cd .. create file when source is not /dev/null $ cat > create.patch <<EOF > diff -Naur proj-orig/foo proj-new/foo > --- proj-orig/foo 1969-12-31 16:00:00.000000000 -0800 > +++ proj-new/foo 2009-07-17 16:50:45.801368000 -0700 > @@ -0,0 +1,1 @@ > +a > EOF some people have patches like the following too $ cat > create2.patch <<EOF > diff -Naur proj-orig/foo proj-new/foo > --- proj-orig/foo.orig 1969-12-31 16:00:00.000000000 -0800 > +++ proj-new/foo 2009-07-17 16:50:45.801368000 -0700 > @@ -0,0 +1,1 @@ > +a > EOF $ hg init oddcreate $ cd oddcreate $ hg import --no-commit ../create.patch applying ../create.patch $ cat foo a $ rm foo $ hg revert foo $ hg import --no-commit ../create2.patch applying ../create2.patch $ cat foo a $ cd .. Issue1859: first line mistaken for email headers $ hg init emailconfusion $ cd emailconfusion $ cat > a.patch <<EOF > module: summary > > description > > > diff -r 000000000000 -r 9b4c1e343b55 test.txt > --- /dev/null > +++ b/a > @@ -0,0 +1,1 @@ > +a > EOF $ hg import -d '0 0' a.patch applying a.patch $ hg parents -v changeset: 0:5a681217c0ad tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 files: a description: module: summary description $ cd .. in commit message $ hg init commitconfusion $ cd commitconfusion $ cat > a.patch <<EOF > module: summary > > --- description > > diff --git a/a b/a > new file mode 100644 > --- /dev/null > +++ b/a > @@ -0,0 +1,1 @@ > +a > EOF > hg import -d '0 0' a.patch > hg parents -v > cd .. > > echo '% tricky header splitting' > cat > trickyheaders.patch <<EOF > From: User A <user@a> > Subject: [PATCH] from: tricky! > > # HG changeset patch > # User User B > # Date 1266264441 18000 > # Branch stable > # Node ID f2be6a1170ac83bf31cb4ae0bad00d7678115bc0 > # Parent 0000000000000000000000000000000000000000 > from: tricky! > > That is not a header. > > diff -r 000000000000 -r f2be6a1170ac foo > --- /dev/null > +++ b/foo > @@ -0,0 +1,1 @@ > +foo > EOF applying a.patch changeset: 0:f34d9187897d tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 files: a description: module: summary % tricky header splitting $ hg init trickyheaders $ cd trickyheaders $ hg import -d '0 0' ../trickyheaders.patch applying ../trickyheaders.patch $ hg export --git tip # HG changeset patch # User User B # Date 0 0 # Thu Jan 01 00:00:00 1970 +0000 # Node ID eb56ab91903632294ac504838508cb370c0901d2 # Parent 0000000000000000000000000000000000000000 from: tricky! That is not a header. diff --git a/foo b/foo new file mode 100644 --- /dev/null +++ b/foo @@ -0,0 +1,1 @@ +foo $ cd .. Issue2102: hg export and hg import speak different languages $ hg init issue2102 $ cd issue2102 $ mkdir -p src/cmd/gc $ touch src/cmd/gc/mksys.bash $ hg ci -Am init adding src/cmd/gc/mksys.bash $ hg import - <<EOF > # HG changeset patch > # User Rob Pike > # Date 1216685449 25200 > # Node ID 03aa2b206f499ad6eb50e6e207b9e710d6409c98 > # Parent 93d10138ad8df586827ca90b4ddb5033e21a3a84 > help management of empty pkg and lib directories in perforce > > R=gri > DELTA=4 (4 added, 0 deleted, 0 changed) > OCL=13328 > CL=13328 > > diff --git a/lib/place-holder b/lib/place-holder > new file mode 100644 > --- /dev/null > +++ b/lib/place-holder > @@ -0,0 +1,2 @@ > +perforce does not maintain empty directories. > +this file helps. > diff --git a/pkg/place-holder b/pkg/place-holder > new file mode 100644 > --- /dev/null > +++ b/pkg/place-holder > @@ -0,0 +1,2 @@ > +perforce does not maintain empty directories. > +this file helps. > diff --git a/src/cmd/gc/mksys.bash b/src/cmd/gc/mksys.bash > old mode 100644 > new mode 100755 > EOF applying patch from stdin #if execbit $ hg sum parent: 1:d59915696727 tip help management of empty pkg and lib directories in perforce branch: default commit: (clean) update: (current) phases: 2 draft $ hg diff --git -c tip diff --git a/lib/place-holder b/lib/place-holder new file mode 100644 --- /dev/null +++ b/lib/place-holder @@ -0,0 +1,2 @@ +perforce does not maintain empty directories. +this file helps. diff --git a/pkg/place-holder b/pkg/place-holder new file mode 100644 --- /dev/null +++ b/pkg/place-holder @@ -0,0 +1,2 @@ +perforce does not maintain empty directories. +this file helps. diff --git a/src/cmd/gc/mksys.bash b/src/cmd/gc/mksys.bash old mode 100644 new mode 100755 #else $ hg sum parent: 1:28f089cc9ccc tip help management of empty pkg and lib directories in perforce branch: default commit: (clean) update: (current) phases: 2 draft $ hg diff --git -c tip diff --git a/lib/place-holder b/lib/place-holder new file mode 100644 --- /dev/null +++ b/lib/place-holder @@ -0,0 +1,2 @@ +perforce does not maintain empty directories. +this file helps. diff --git a/pkg/place-holder b/pkg/place-holder new file mode 100644 --- /dev/null +++ b/pkg/place-holder @@ -0,0 +1,2 @@ +perforce does not maintain empty directories. +this file helps. /* The mode change for mksys.bash is missing here, because on platforms */ /* that don't support execbits, mode changes in patches are ignored when */ /* they are imported. This is obviously also the reason for why the hash */ /* in the created changeset is different to the one you see above the */ /* #else clause */ #endif $ cd .. diff lines looking like headers $ hg init difflineslikeheaders $ cd difflineslikeheaders $ echo a >a $ echo b >b $ echo c >c $ hg ci -Am1 adding a adding b adding c $ echo "key: value" >>a $ echo "key: value" >>b $ echo "foo" >>c $ hg ci -m2 $ hg up -C 0 3 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg diff --git -c1 >want $ hg diff -c1 | hg import --no-commit - applying patch from stdin $ hg diff --git >have $ diff want have $ cd .. import a unified diff with no lines of context (diff -U0) $ hg init diffzero $ cd diffzero $ cat > f << EOF > c2 > c4 > c5 > EOF $ hg commit -Am0 adding f $ hg import --no-commit - << EOF > # HG changeset patch > # User test > # Date 0 0 > # Node ID f4974ab632f3dee767567b0576c0ec9a4508575c > # Parent 8679a12a975b819fae5f7ad3853a2886d143d794 > 1 > diff -r 8679a12a975b -r f4974ab632f3 f > --- a/f Thu Jan 01 00:00:00 1970 +0000 > +++ b/f Thu Jan 01 00:00:00 1970 +0000 > @@ -0,0 +1,1 @@ > +c1 > @@ -1,0 +3,1 @@ > +c3 > @@ -3,1 +4,0 @@ > -c5 > EOF applying patch from stdin $ cat f c1 c2 c3 c4 $ cd .. no segfault while importing a unified diff which start line is zero but chunk size is non-zero $ hg init startlinezero $ cd startlinezero $ echo foo > foo $ hg commit -Amfoo adding foo $ hg import --no-commit - << EOF > diff a/foo b/foo > --- a/foo > +++ b/foo > @@ -0,1 +0,1 @@ > foo > EOF applying patch from stdin $ cd .. Test corner case involving fuzz and skew $ hg init morecornercases $ cd morecornercases $ cat > 01-no-context-beginning-of-file.diff <<EOF > diff --git a/a b/a > --- a/a > +++ b/a > @@ -1,0 +1,1 @@ > +line > EOF $ cat > 02-no-context-middle-of-file.diff <<EOF > diff --git a/a b/a > --- a/a > +++ b/a > @@ -1,1 +1,1 @@ > -2 > +add some skew > @@ -2,0 +2,1 @@ > +line > EOF $ cat > 03-no-context-end-of-file.diff <<EOF > diff --git a/a b/a > --- a/a > +++ b/a > @@ -10,0 +10,1 @@ > +line > EOF $ cat > 04-middle-of-file-completely-fuzzed.diff <<EOF > diff --git a/a b/a > --- a/a > +++ b/a > @@ -1,1 +1,1 @@ > -2 > +add some skew > @@ -2,2 +2,3 @@ > not matching, should fuzz > ... a bit > +line > EOF $ cat > a <<EOF > 1 > 2 > 3 > 4 > EOF $ hg ci -Am adda a $ for p in *.diff; do > hg import -v --no-commit $p > cat a > hg revert -aqC a > # patch -p1 < $p > # cat a > # hg revert -aC a > done applying 01-no-context-beginning-of-file.diff patching file a applied to working directory 1 line 2 3 4 applying 02-no-context-middle-of-file.diff patching file a Hunk #1 succeeded at 2 (offset 1 lines). Hunk #2 succeeded at 4 (offset 1 lines). applied to working directory 1 add some skew 3 line 4 applying 03-no-context-end-of-file.diff patching file a Hunk #1 succeeded at 5 (offset -6 lines). applied to working directory 1 2 3 4 line applying 04-middle-of-file-completely-fuzzed.diff patching file a Hunk #1 succeeded at 2 (offset 1 lines). Hunk #2 succeeded at 5 with fuzz 2 (offset 1 lines). applied to working directory 1 add some skew 3 4 line $ cd .. Test partial application ------------------------ prepare a stack of patches depending on each other $ hg init partial $ cd partial $ cat << EOF > a > one > two > three > four > five > six > seven > EOF $ hg add a $ echo 'b' > b $ hg add b $ hg commit -m 'initial' -u Babar $ cat << EOF > a > one > two > 3 > four > five > six > seven > EOF $ hg commit -m 'three' -u Celeste $ cat << EOF > a > one > two > 3 > 4 > five > six > seven > EOF $ hg commit -m 'four' -u Rataxes $ cat << EOF > a > one > two > 3 > 4 > 5 > six > seven > EOF $ echo bb >> b $ hg commit -m 'five' -u Arthur $ echo 'Babar' > jungle $ hg add jungle $ hg ci -m 'jungle' -u Zephir $ echo 'Celeste' >> jungle $ hg ci -m 'extended jungle' -u Cornelius $ hg log -G --template '{desc|firstline} [{author}] {diffstat}\n' @ extended jungle [Cornelius] 1: +1/-0 | o jungle [Zephir] 1: +1/-0 | o five [Arthur] 2: +2/-1 | o four [Rataxes] 1: +1/-1 | o three [Celeste] 1: +1/-1 | o initial [Babar] 2: +8/-0 Importing with some success and some errors: $ hg update --rev 'desc(initial)' 2 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg export --rev 'desc(five)' | hg import --partial - applying patch from stdin patching file a Hunk #1 FAILED at 1 1 out of 1 hunks FAILED -- saving rejects to file a.rej patch applied partially (fix the .rej files and run `hg commit --amend`) [1] $ hg log -G --template '{desc|firstline} [{author}] {diffstat}\n' @ five [Arthur] 1: +1/-0 | | o extended jungle [Cornelius] 1: +1/-0 | | | o jungle [Zephir] 1: +1/-0 | | | o five [Arthur] 2: +2/-1 | | | o four [Rataxes] 1: +1/-1 | | | o three [Celeste] 1: +1/-1 |/ o initial [Babar] 2: +8/-0 $ hg export # HG changeset patch # User Arthur # Date 0 0 # Thu Jan 01 00:00:00 1970 +0000 # Node ID 26e6446bb2526e2be1037935f5fca2b2706f1509 # Parent 8e4f0351909eae6b9cf68c2c076cb54c42b54b2e five diff -r 8e4f0351909e -r 26e6446bb252 b --- a/b Thu Jan 01 00:00:00 1970 +0000 +++ b/b Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +1,2 @@ b +bb $ hg status -c . C a C b $ ls a a.rej b Importing with zero success: $ hg update --rev 'desc(initial)' 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg export --rev 'desc(four)' | hg import --partial - applying patch from stdin patching file a Hunk #1 FAILED at 0 1 out of 1 hunks FAILED -- saving rejects to file a.rej patch applied partially (fix the .rej files and run `hg commit --amend`) [1] $ hg log -G --template '{desc|firstline} [{author}] {diffstat}\n' @ four [Rataxes] 0: +0/-0 | | o five [Arthur] 1: +1/-0 |/ | o extended jungle [Cornelius] 1: +1/-0 | | | o jungle [Zephir] 1: +1/-0 | | | o five [Arthur] 2: +2/-1 | | | o four [Rataxes] 1: +1/-1 | | | o three [Celeste] 1: +1/-1 |/ o initial [Babar] 2: +8/-0 $ hg export # HG changeset patch # User Rataxes # Date 0 0 # Thu Jan 01 00:00:00 1970 +0000 # Node ID cb9b1847a74d9ad52e93becaf14b98dbcc274e1e # Parent 8e4f0351909eae6b9cf68c2c076cb54c42b54b2e four $ hg status -c . C a C b $ ls a a.rej b Importing with unknown file: $ hg update --rev 'desc(initial)' 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg export --rev 'desc("extended jungle")' | hg import --partial - applying patch from stdin unable to find 'jungle' for patching (use '--prefix' to apply patch relative to the current directory) 1 out of 1 hunks FAILED -- saving rejects to file jungle.rej patch applied partially (fix the .rej files and run `hg commit --amend`) [1] $ hg log -G --template '{desc|firstline} [{author}] {diffstat}\n' @ extended jungle [Cornelius] 0: +0/-0 | | o four [Rataxes] 0: +0/-0 |/ | o five [Arthur] 1: +1/-0 |/ | o extended jungle [Cornelius] 1: +1/-0 | | | o jungle [Zephir] 1: +1/-0 | | | o five [Arthur] 2: +2/-1 | | | o four [Rataxes] 1: +1/-1 | | | o three [Celeste] 1: +1/-1 |/ o initial [Babar] 2: +8/-0 $ hg export # HG changeset patch # User Cornelius # Date 0 0 # Thu Jan 01 00:00:00 1970 +0000 # Node ID 1fb1f86bef43c5a75918178f8d23c29fb0a7398d # Parent 8e4f0351909eae6b9cf68c2c076cb54c42b54b2e extended jungle $ hg status -c . C a C b $ ls a a.rej b jungle.rej Importing multiple failing patches: $ hg update --rev 'desc(initial)' 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo 'B' > b # just to make another commit $ hg commit -m "a new base" created new head $ hg export --rev 'desc("four") + desc("extended jungle")' | hg import --partial - applying patch from stdin patching file a Hunk #1 FAILED at 0 1 out of 1 hunks FAILED -- saving rejects to file a.rej patch applied partially (fix the .rej files and run `hg commit --amend`) [1] $ hg log -G --template '{desc|firstline} [{author}] {diffstat}\n' @ four [Rataxes] 0: +0/-0 | o a new base [test] 1: +1/-1 | | o extended jungle [Cornelius] 0: +0/-0 |/ | o four [Rataxes] 0: +0/-0 |/ | o five [Arthur] 1: +1/-0 |/ | o extended jungle [Cornelius] 1: +1/-0 | | | o jungle [Zephir] 1: +1/-0 | | | o five [Arthur] 2: +2/-1 | | | o four [Rataxes] 1: +1/-1 | | | o three [Celeste] 1: +1/-1 |/ o initial [Babar] 2: +8/-0 $ hg export # HG changeset patch # User Rataxes # Date 0 0 # Thu Jan 01 00:00:00 1970 +0000 # Node ID a9d7b6d0ffbb4eb12b7d5939250fcd42e8930a1d # Parent f59f8d2e95a8ca5b1b4ca64320140da85f3b44fd four $ hg status -c . C a C b Importing some extra header =========================== $ cat > $TESTTMP/parseextra.py <<EOF > import mercurial.patch > import mercurial.cmdutil > > def processfoo(repo, data, extra, opts): > if 'foo' in data: > extra['foo'] = data['foo'] > def postimport(ctx): > if 'foo' in ctx.extra(): > ctx.repo().ui.write('imported-foo: %s\n' % ctx.extra()['foo']) > > mercurial.patch.patchheadermap.append(('Foo', 'foo')) > mercurial.cmdutil.extrapreimport.append('foo') > mercurial.cmdutil.extrapreimportmap['foo'] = processfoo > mercurial.cmdutil.extrapostimport.append('foo') > mercurial.cmdutil.extrapostimportmap['foo'] = postimport > EOF $ cat >> $HGRCPATH <<EOF > [extensions] > parseextra=$TESTTMP/parseextra.py > EOF $ hg up -C tip 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cat > $TESTTMP/foo.patch <<EOF > # HG changeset patch > # User Rataxes > # Date 0 0 > # Thu Jan 01 00:00:00 1970 +0000 > # Foo bar > height > > --- a/a Thu Jan 01 00:00:00 1970 +0000 > +++ b/a Wed Oct 07 09:17:44 2015 +0000 > @@ -5,3 +5,4 @@ > five > six > seven > +heigt > EOF $ hg import $TESTTMP/foo.patch applying $TESTTMP/foo.patch imported-foo: bar $ hg log --debug -r . | grep extra extra: branch=default extra: foo=bar Warn the user that paths are relative to the root of repository when file not found for patching $ mkdir filedir $ echo "file1" >> filedir/file1 $ hg add filedir/file1 $ hg commit -m "file1" $ cd filedir $ hg import -p 2 - <<EOF > # HG changeset patch > # User test > # Date 0 0 > file2 > > diff --git a/filedir/file1 b/filedir/file1 > --- a/filedir/file1 > +++ b/filedir/file1 > @@ -1,1 +1,2 @@ > file1 > +file2 > EOF applying patch from stdin unable to find 'file1' for patching (use '--prefix' to apply patch relative to the current directory) 1 out of 1 hunks FAILED -- saving rejects to file file1.rej abort: patch failed to apply [255] test import crash (issue5375) $ cd .. $ hg init repo $ cd repo $ printf "diff --git a/a b/b\nrename from a\nrename to b" | hg import - applying patch from stdin a not tracked! abort: source file 'a' does not exist [255]