$ echo "[extensions]" >> $HGRCPATH

  $ echo "relink=" >> $HGRCPATH

  $ fix_path() {

  >     tr '\\' /

  > }

  $ cat > arelinked.py <<EOF

  > import sys, os

  > from mercurial import util

  > path1, path2 = sys.argv[1:3]

  > if util.samefile(path1, path2):

  >     print '%s == %s' % (path1, path2)

  > else:

  >     print '%s != %s' % (path1, path2)

  > EOF

create source repository

  $ hg init repo

  $ cd repo

  $ echo '[ui]' > .hg/hgrc

  $ echo 'username= A. Foo <a.foo@bar.com>' >> .hg/hgrc

  $ echo a > a

  $ echo b > b

  $ hg ci -Am addfile

  adding a

  adding b

  $ echo a >> a

  $ echo a >> b

  $ hg ci -Am changefiles

Test files are read in binary mode

  $ python -c "file('.hg/store/data/dummy.i', 'wb').write('a\r\nb\n')"

  $ cd ..

clone and pull to break links

  $ hg clone --pull -r0 repo clone

  requesting all changes

  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 clone

  $ echo '[ui]' >> .hg/hgrc

  $ echo 'username= A. Baz <a.baz@bar.com>' >> .hg/hgrc

  $ hg pull -q

  $ echo b >> b

  $ hg ci -m changeb

  created new head

  $ python -c "file('.hg/store/data/dummy.i', 'wb').write('a\nb\r\n')"

relink

  $ hg relink --debug | fix_path

  relinking .*/.hg/store

  tip has 2 files, estimated total number of files: 3

  collecting: 00changelog.i 1/3 files (33.33%)

  collecting: 00manifest.i 2/3 files (66.67%)

  collecting: a.i 3/3 files (100.00%)

  collecting: b.i 4/3 files (133.33%)

  collecting: dummy.i 5/3 files (166.67%)

  collected 5 candidate storage files

  not linkable: 00changelog.i

  not linkable: 00manifest.i

  pruning: data/a.i 3/5  files (60.00%)

  not linkable: data/b.i

  pruning: data/dummy.i 5/5  files (100.00%)

  pruned down to 2 probably relinkable files

  relinking: data/a.i 1/2  files (50.00%)

  not linkable: data/dummy.i

  relinked 1 files (136 bytes reclaimed)

  $ cd ..

check hardlinks

  $ python arelinked.py repo/.hg/store/data/a.i clone/.hg/store/data/a.i

  repo/.hg/store/data/a.i == clone/.hg/store/data/a.i

  $ python arelinked.py repo/.hg/store/data/b.i clone/.hg/store/data/b.i

  repo/.hg/store/data/b.i != clone/.hg/store/data/b.i