rebase: improve error message for --base being empty or causing emptiness
Before it just said 'nothing to rebase'.
Now 'if "base" is an empty set:
abort: empty "base" revision set - can't compute rebase set
If the set of changesets to rebase can't be found from "base", it will fail as
before but with more explanation of what the problem was.
The name of the "base" option is not obvious - it is more like "samples
identifying the branch to rebase". The error messages for problems with the
specified "base" value will use that term and might thus also not be obvious,
but at least they are consistent with the option name. The name "base" will not
be used if the base only was specified implicitly as the working directory
parent.
$ 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
$ 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 ../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
$ cat > dummypatch.py <<EOF
> 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
$ hg --config ui.patch='python ../dummypatch.py' --cwd b import ../exported-tip.patch
applying ../exported-tip.patch
$ cat b/a
line2
$ rm -r b
import of plain diff should fail without 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 ../diffed-tip.patch
applying ../diffed-tip.patch
abort: empty commit message
[255]
$ 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
$ 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
$ 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 --no-commit ../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
a
created 1d4bd90af0e4
applying ../patch2
patching file a
a
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
$ 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 --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
$ 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)
$ 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)
$ 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 ..