$ . "$TESTDIR/narrow-library.sh"

  $ hg init master

  $ cd master

  $ cat >> .hg/hgrc <<EOF

  > [narrow]

  > serveellipses=True

  > EOF

  $ for x in `$TESTDIR/seq.py 10`

  > do

  >   echo $x > "f$x"

  >   hg add "f$x"

  >   hg commit -m "Commit f$x"

  > done

  $ cd ..

narrow clone a couple files, f2 and f8

  $ hg clone --narrow ssh://user@dummy/master narrow --include "f2" --include "f8"

  requesting all changes

  adding changesets

  adding manifests

  adding file changes

  added 5 changesets with 2 changes to 2 files

  new changesets *:* (glob)

  updating to branch default

  2 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ cd narrow

  $ ls

  f2

  f8

  $ cat f2 f8

  2

  8

  $ cd ..

change every upstream file twice

  $ cd master

  $ for x in `$TESTDIR/seq.py 10`

  > do

  >   echo "update#1 $x" >> "f$x"

  >   hg commit -m "Update#1 to f$x" "f$x"

  > done

  $ for x in `$TESTDIR/seq.py 10`

  > do

  >   echo "update#2 $x" >> "f$x"

  >   hg commit -m "Update#2 to f$x" "f$x"

  > done

  $ cd ..

look for incoming changes

  $ cd narrow

  $ hg incoming --limit 3

  comparing with ssh://user@dummy/master

  searching for changes

  changeset:   5:ddc055582556

  user:        test

  date:        Thu Jan 01 00:00:00 1970 +0000

  summary:     Update#1 to f1

  changeset:   6:f66eb5ad621d

  user:        test

  date:        Thu Jan 01 00:00:00 1970 +0000

  summary:     Update#1 to f2

  changeset:   7:c42ecff04e99

  user:        test

  date:        Thu Jan 01 00:00:00 1970 +0000

  summary:     Update#1 to f3

Interrupting the pull is safe

  $ hg --config hooks.pretxnchangegroup.bad=false pull -q

  transaction abort!

  rollback completed

  abort: pretxnchangegroup.bad hook exited with status 1

  [255]

  $ hg id

  223311e70a6f tip

pull new changes down to the narrow clone. Should get 8 new changesets: 4

relevant to the narrow spec, and 4 ellipsis nodes gluing them all together.

  $ hg pull

  pulling from ssh://user@dummy/master

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  added 9 changesets with 4 changes to 2 files

  new changesets *:* (glob)

  (run 'hg update' to get a working copy)

  $ hg log -T '{rev}: {desc}\n'

  13: Update#2 to f10

  12: Update#2 to f8

  11: Update#2 to f7

  10: Update#2 to f2

  9: Update#2 to f1

  8: Update#1 to f8

  7: Update#1 to f7

  6: Update#1 to f2

  5: Update#1 to f1

  4: Commit f10

  3: Commit f8

  2: Commit f7

  1: Commit f2

  0: Commit f1

  $ hg update tip

  2 files updated, 0 files merged, 0 files removed, 0 files unresolved

add a change and push it

  $ echo "update#3 2" >> f2

  $ hg commit -m "Update#3 to f2" f2

  $ hg log f2 -T '{rev}: {desc}\n'

  14: Update#3 to f2

  10: Update#2 to f2

  6: Update#1 to f2

  1: Commit f2

  $ hg push

  pushing to ssh://user@dummy/master

  searching for changes

  remote: adding changesets

  remote: adding manifests

  remote: adding file changes

  remote: added 1 changesets with 1 changes to 1 files

  $ cd ..

  $ cd master

  $ hg log f2 -T '{rev}: {desc}\n'

  30: Update#3 to f2

  21: Update#2 to f2

  11: Update#1 to f2

  1: Commit f2

  $ hg log -l 3 -T '{rev}: {desc}\n'

  30: Update#3 to f2

  29: Update#2 to f10

  28: Update#2 to f9

Can pull into repo with a single commit

  $ cd ..

  $ hg clone -q --narrow ssh://user@dummy/master narrow2 --include "f1" -r 0

  $ cd narrow2

  $ hg pull -q -r 1

  transaction abort!

  rollback completed

  abort: pull failed on remote

  [255]

Can use 'hg share':

  $ cat >> $HGRCPATH <<EOF

  > [extensions]

  > share=

  > EOF

  $ cd ..

  $ hg share narrow2 narrow2-share

  updating working directory

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ cd narrow2-share

  $ hg status

We should also be able to unshare without breaking everything:

  $ hg unshare

  $ hg verify

  checking changesets

  checking manifests

  crosschecking files in changesets and manifests

  checking files

  1 files, 1 changesets, 1 total revisions