opener: force copy on 'a'ppend if nlinks() returns 0 (
issue1922)
If pywin32 is not installed, 'os.lstat(pathname).st_nlink' is used for
nlinks(), which is always zero for all files on Windows.
To make sure we break up hardlinks if pywin32 is missing, we force
nlink = 2 if nlinks() returns < 1.
(this completely fixes
issue1922)
$ hg init test
$ cd test
$ cat >>afile <<EOF
> 0
> EOF
$ hg add afile
$ hg commit -m "0.0"
$ cat >>afile <<EOF
> 1
> EOF
$ hg commit -m "0.1"
$ cat >>afile <<EOF
> 2
> EOF
$ hg commit -m "0.2"
$ cat >>afile <<EOF
> 3
> EOF
$ hg commit -m "0.3"
$ hg update -C 0
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat >>afile <<EOF
> 1
> EOF
$ hg commit -m "1.1"
created new head
$ cat >>afile <<EOF
> 2
> EOF
$ hg commit -m "1.2"
$ cat >fred <<EOF
> a line
> EOF
$ cat >>afile <<EOF
> 3
> EOF
$ hg add fred
$ hg commit -m "1.3"
$ hg mv afile adifferentfile
$ hg commit -m "1.3m"
$ hg update -C 3
1 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ hg mv afile anotherfile
$ hg commit -m "0.3m"
$ hg debugindex .hg/store/data/afile.i
rev offset length base linkrev nodeid p1 p2
0 0 3 0 0 362fef284ce2 000000000000 000000000000
1 3 5 1 1 125144f7e028 362fef284ce2 000000000000
2 8 7 2 2 4c982badb186 125144f7e028 000000000000
3 15 9 3 3 19b1fc555737 4c982badb186 000000000000
$ hg debugindex .hg/store/data/adifferentfile.i
rev offset length base linkrev nodeid p1 p2
0 0 75 0 7 2565f3199a74 000000000000 000000000000
$ hg debugindex .hg/store/data/anotherfile.i
rev offset length base linkrev nodeid p1 p2
0 0 75 0 8 2565f3199a74 000000000000 000000000000
$ hg debugindex .hg/store/data/fred.i
rev offset length base linkrev nodeid p1 p2
0 0 8 0 6 12ab3bcc5ea4 000000000000 000000000000
$ hg debugindex .hg/store/00manifest.i
rev offset length base linkrev nodeid p1 p2
0 0 48 0 0 43eadb1d2d06 000000000000 000000000000
1 48 48 1 1 8b89697eba2c 43eadb1d2d06 000000000000
2 96 48 2 2 626a32663c2f 8b89697eba2c 000000000000
3 144 48 3 3 f54c32f13478 626a32663c2f 000000000000
4 192 58 3 6 de68e904d169 626a32663c2f 000000000000
5 250 68 3 7 09bb521d218d de68e904d169 000000000000
6 318 54 6 8 1fde233dfb0f f54c32f13478 000000000000
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
4 files, 9 changesets, 7 total revisions
$ cd ..
$ for i in 0 1 2 3 4 5 6 7 8; do
> echo
> mkdir test-"$i"
> hg --cwd test-"$i" init
> hg -R test push -r "$i" test-"$i"
> cd test-"$i"
> hg verify
> cd ..
> done
pushing to test-0
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 1 changesets, 1 total revisions
pushing to test-1
searching for changes
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 1 files
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 2 changesets, 2 total revisions
pushing to test-2
searching for changes
adding changesets
adding manifests
adding file changes
added 3 changesets with 3 changes to 1 files
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 3 changesets, 3 total revisions
pushing to test-3
searching for changes
adding changesets
adding manifests
adding file changes
added 4 changesets with 4 changes to 1 files
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 4 changesets, 4 total revisions
pushing to test-4
searching for changes
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 1 files
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 2 changesets, 2 total revisions
pushing to test-5
searching for changes
adding changesets
adding manifests
adding file changes
added 3 changesets with 3 changes to 1 files
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 3 changesets, 3 total revisions
pushing to test-6
searching for changes
adding changesets
adding manifests
adding file changes
added 4 changesets with 5 changes to 2 files
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
2 files, 4 changesets, 5 total revisions
pushing to test-7
searching for changes
adding changesets
adding manifests
adding file changes
added 5 changesets with 6 changes to 3 files
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
3 files, 5 changesets, 6 total revisions
pushing to test-8
searching for changes
adding changesets
adding manifests
adding file changes
added 5 changesets with 5 changes to 2 files
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
2 files, 5 changesets, 5 total revisions
$ cd test-8
$ hg pull ../test-7
pulling from ../test-7
searching for changes
adding changesets
adding manifests
adding file changes
added 4 changesets with 2 changes to 3 files (+1 heads)
(run 'hg heads' to see heads, 'hg merge' to merge)
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
4 files, 9 changesets, 7 total revisions