tests: make test-shelve.t timing-independent

It was sometimes taking 2s for me (not the "1s" the test expected).

tests/test-shelve.t

@@ -1,1739 +1,1739 b''
   $ cat <<EOF >> $HGRCPATH
   > [extensions]
   > mq =
   > shelve =
   > [defaults]
   > diff = --nodates --git
   > qnew = --date '0 0'
   > [shelve]
   > maxbackups = 2
   > EOF
 
   $ hg init repo
   $ cd repo
   $ mkdir a b
   $ echo a > a/a
   $ echo b > b/b
   $ echo c > c
   $ echo d > d
   $ echo x > x
   $ hg addremove -q
 
 shelve has a help message
   $ hg shelve -h
   hg shelve [OPTION]... [FILE]...
   
   save and set aside changes from the working directory
   
       Shelving takes files that "hg status" reports as not clean, saves the
       modifications to a bundle (a shelved change), and reverts the files so
       that their state in the working directory becomes clean.
   
       To restore these changes to the working directory, using "hg unshelve";
       this will work even if you switch to a different commit.
   
       When no files are specified, "hg shelve" saves all not-clean files. If
       specific files or directories are named, only changes to those files are
       shelved.
   
       In bare shelve (when no files are specified, without interactive, include
       and exclude option), shelving remembers information if the working
       directory was on newly created branch, in other words working directory
       was on different branch than its first parent. In this situation
       unshelving restores branch information to the working directory.
   
       Each shelved change has a name that makes it easier to find later. The
       name of a shelved change defaults to being based on the active bookmark,
       or if there is no active bookmark, the current named branch.  To specify a
       different name, use "--name".
   
       To see a list of existing shelved changes, use the "--list" option. For
       each shelved change, this will print its name, age, and description; use "
       --patch" or "--stat" for more details.
   
       To delete specific shelved changes, use "--delete". To delete all shelved
       changes, use "--cleanup".
   
   (use 'hg help -e shelve' to show help for the shelve extension)
   
   options ([+] can be repeated):
   
    -A --addremove           mark new/missing files as added/removed before
                             shelving
    -u --unknown             store unknown files in the shelve
       --cleanup             delete all shelved changes
       --date DATE           shelve with the specified commit date
    -d --delete              delete the named shelved change(s)
    -e --edit                invoke editor on commit messages
    -l --list                list current shelves
    -m --message TEXT        use text as shelve message
    -n --name NAME           use the given name for the shelved commit
    -p --patch               show patch
    -i --interactive         interactive mode, only works while creating a shelve
       --stat                output diffstat-style summary of changes
    -I --include PATTERN [+] include names matching the given patterns
    -X --exclude PATTERN [+] exclude names matching the given patterns
       --mq                  operate on patch repository
   
   (some details hidden, use --verbose to show complete help)
 
 shelving in an empty repo should be possible
 (this tests also that editor is not invoked, if '--edit' is not
 specified)
 
   $ HGEDITOR=cat hg shelve
   shelved as default
   0 files updated, 0 files merged, 5 files removed, 0 files unresolved
 
   $ hg unshelve
   unshelving change 'default'
 
   $ hg commit -q -m 'initial commit'
 
   $ hg shelve
   nothing changed
   [1]
 
 make sure shelve files were backed up
 
   $ ls .hg/shelve-backup
   default.hg
   default.patch
 
 checks to make sure we dont create a directory or
 hidden file while choosing a new shelve name
 
 when we are given a name
 
   $ hg shelve -n foo/bar
   abort: shelved change names can not contain slashes
   [255]
   $ hg shelve -n .baz
   abort: shelved change names can not start with '.'
   [255]
   $ hg shelve -n foo\\bar
   abort: shelved change names can not contain slashes
   [255]
 
 when shelve has to choose itself
 
   $ hg branch x/y -q
   $ hg commit -q -m "Branch commit 0"
   $ hg shelve
   nothing changed
   [1]
   $ hg branch .x -q
   $ hg commit -q -m "Branch commit 1"
   $ hg shelve
   nothing changed
   [1]
   $ hg branch x\\y -q
   $ hg commit -q -m "Branch commit 2"
   $ hg shelve
   nothing changed
   [1]
 
 cleaning the branches made for name checking tests
 
   $ hg up default -q
   $ hg strip 3 -q
   $ hg strip 2 -q
   $ hg strip 1 -q
 
 create an mq patch - shelving should work fine with a patch applied
 
   $ echo n > n
   $ hg add n
   $ hg commit n -m second
   $ hg qnew second.patch
 
 shelve a change that we will delete later
 
   $ echo a >> a/a
   $ hg shelve
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
 set up some more complex changes to shelve
 
   $ echo a >> a/a
   $ hg mv b b.rename
   moving b/b to b.rename/b (glob)
   $ hg cp c c.copy
   $ hg status -C
   M a/a
   A b.rename/b
     b/b
   A c.copy
     c
   R b/b
 
 the common case - no options or filenames
 
   $ hg shelve
   shelved as default-01
   2 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ hg status -C
 
 ensure that our shelved changes exist
 
   $ hg shelve -l
   default-01      (*)* changes to: [mq]: second.patch (glob)
   default         (*)* changes to: [mq]: second.patch (glob)
 
   $ hg shelve -l -p default
   default         (*)* changes to: [mq]: second.patch (glob)
   
   diff --git a/a/a b/a/a
   --- a/a/a
   +++ b/a/a
   @@ -1,1 +1,2 @@
    a
   +a
 
   $ hg shelve --list --addremove
   abort: options '--list' and '--addremove' may not be used together
   [255]
 
 delete our older shelved change
 
   $ hg shelve -d default
   $ hg qfinish -a -q
 
 ensure shelve backups aren't overwritten
 
   $ ls .hg/shelve-backup/
   default-1.hg
   default-1.patch
   default.hg
   default.patch
 
 local edits should not prevent a shelved change from applying
 
   $ printf "z\na\n" > a/a
   $ hg unshelve --keep
   unshelving change 'default-01'
   temporarily committing pending changes (restore with 'hg unshelve --abort')
   rebasing shelved changes
   rebasing 4:32c69314e062 "changes to: [mq]: second.patch" (tip)
   merging a/a
 
   $ hg revert --all -q
   $ rm a/a.orig b.rename/b c.copy
 
 apply it and make sure our state is as expected
 
 (this also tests that same timestamp prevents backups from being
 removed, even though there are more than 'maxbackups' backups)
 
   $ f -t .hg/shelve-backup/default.patch
   .hg/shelve-backup/default.patch: file
   $ touch -t 200001010000 .hg/shelve-backup/default.patch
   $ f -t .hg/shelve-backup/default-1.patch
   .hg/shelve-backup/default-1.patch: file
   $ touch -t 200001010000 .hg/shelve-backup/default-1.patch
 
   $ hg unshelve
   unshelving change 'default-01'
   $ hg status -C
   M a/a
   A b.rename/b
     b/b
   A c.copy
     c
   R b/b
   $ hg shelve -l
 
 (both of default.hg and default-1.hg should be still kept, because it
 is difficult to decide actual order of them from same timestamp)
 
   $ ls .hg/shelve-backup/
   default-01.hg
   default-01.patch
   default-1.hg
   default-1.patch
   default.hg
   default.patch
 
   $ hg unshelve
   abort: no shelved changes to apply!
   [255]
   $ hg unshelve foo
   abort: shelved change 'foo' not found
   [255]
 
 named shelves, specific filenames, and "commit messages" should all work
 (this tests also that editor is invoked, if '--edit' is specified)
 
   $ hg status -C
   M a/a
   A b.rename/b
     b/b
   A c.copy
     c
   R b/b
   $ HGEDITOR=cat hg shelve -q -n wibble -m wat -e a
   wat
   
   
   HG: Enter commit message.  Lines beginning with 'HG:' are removed.
   HG: Leave message empty to abort commit.
   HG: --
   HG: user: shelve@localhost
   HG: branch 'default'
   HG: changed a/a
 
 expect "a" to no longer be present, but status otherwise unchanged
 
   $ hg status -C
   A b.rename/b
     b/b
   A c.copy
     c
   R b/b
   $ hg shelve -l --stat
   wibble          (*)    wat (glob)
    a/a |  1 +
    1 files changed, 1 insertions(+), 0 deletions(-)
 
 and now "a/a" should reappear
 
   $ cd a
   $ hg unshelve -q wibble
   $ cd ..
   $ hg status -C
   M a/a
   A b.rename/b
     b/b
   A c.copy
     c
   R b/b
 
 ensure old shelve backups are being deleted automatically
 
   $ ls .hg/shelve-backup/
   default-01.hg
   default-01.patch
   wibble.hg
   wibble.patch
 
 cause unshelving to result in a merge with 'a' conflicting
 
   $ hg shelve -q
   $ echo c>>a/a
   $ hg commit -m second
   $ hg tip --template '{files}\n'
   a/a
 
 add an unrelated change that should be preserved
 
   $ mkdir foo
   $ echo foo > foo/foo
   $ hg add foo/foo
 
 force a conflicted merge to occur
 
   $ hg unshelve
   unshelving change 'default'
   temporarily committing pending changes (restore with 'hg unshelve --abort')
   rebasing shelved changes
   rebasing 5:32c69314e062 "changes to: [mq]: second.patch" (tip)
   merging a/a
   warning: conflicts while merging a/a! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [1]
 
 ensure that we have a merge with unresolved conflicts
 
   $ hg heads -q --template '{rev}\n'
   5
   4
   $ hg parents -q --template '{rev}\n'
   4
   5
   $ hg status
   M a/a
   M b.rename/b
   M c.copy
   R b/b
   ? a/a.orig
   $ hg diff
   diff --git a/a/a b/a/a
   --- a/a/a
   +++ b/a/a
   @@ -1,2 +1,6 @@
    a
   +<<<<<<< dest:   * - shelve: pending changes temporary commit (glob)
    c
   +=======
   +a
   +>>>>>>> source: 32c69314e062 - shelve: changes to: [mq]: second.patch
   diff --git a/b/b b/b.rename/b
   rename from b/b
   rename to b.rename/b
   diff --git a/c b/c.copy
   copy from c
   copy to c.copy
   $ hg resolve -l
   U a/a
 
   $ hg shelve
   abort: unshelve already in progress
   (use 'hg unshelve --continue' or 'hg unshelve --abort')
   [255]
 
 abort the unshelve and be happy
 
   $ hg status
   M a/a
   M b.rename/b
   M c.copy
   R b/b
   ? a/a.orig
   $ hg unshelve -a
   rebase aborted
   unshelve of 'default' aborted
   $ hg heads -q
   3:2e69b451d1ea
   $ hg parents
   changeset:   3:2e69b451d1ea
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     second
   
   $ hg resolve -l
   $ hg status
   A foo/foo
   ? a/a.orig
 
 try to continue with no unshelve underway
 
   $ hg unshelve -c
   abort: no unshelve in progress
   [255]
   $ hg status
   A foo/foo
   ? a/a.orig
 
 redo the unshelve to get a conflict
 
   $ hg unshelve -q
   warning: conflicts while merging a/a! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [1]
 
 attempt to continue
 
   $ hg unshelve -c
   abort: unresolved conflicts, can't continue
   (see 'hg resolve', then 'hg unshelve --continue')
   [255]
 
   $ hg revert -r . a/a
   $ hg resolve -m a/a
   (no more unresolved files)
   continue: hg unshelve --continue
 
   $ hg commit -m 'commit while unshelve in progress'
   abort: unshelve already in progress
   (use 'hg unshelve --continue' or 'hg unshelve --abort')
   [255]
 
   $ hg graft --continue
   abort: no graft in progress
   (continue: hg unshelve --continue)
   [255]
   $ hg unshelve -c
   rebasing 5:32c69314e062 "changes to: [mq]: second.patch" (tip)
   unshelve of 'default' complete
 
 ensure the repo is as we hope
 
   $ hg parents
   changeset:   3:2e69b451d1ea
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     second
   
   $ hg heads -q
   3:2e69b451d1ea
 
   $ hg status -C
   A b.rename/b
     b/b
   A c.copy
     c
   A foo/foo
   R b/b
   ? a/a.orig
 
 there should be no shelves left
 
   $ hg shelve -l
 
 #if execbit
 
 ensure that metadata-only changes are shelved
 
   $ chmod +x a/a
   $ hg shelve -q -n execbit a/a
   $ hg status a/a
   $ hg unshelve -q execbit
   $ hg status a/a
   M a/a
   $ hg revert a/a
 
 #endif
 
 #if symlink
 
   $ rm a/a
   $ ln -s foo a/a
   $ hg shelve -q -n symlink a/a
   $ hg status a/a
   $ hg unshelve -q -n symlink
   $ hg status a/a
   M a/a
   $ hg revert a/a
 
 #endif
 
 set up another conflict between a commit and a shelved change
 
   $ hg revert -q -C -a
   $ rm a/a.orig b.rename/b c.copy
   $ echo a >> a/a
   $ hg shelve -q
   $ echo x >> a/a
   $ hg ci -m 'create conflict'
   $ hg add foo/foo
 
 if we resolve a conflict while unshelving, the unshelve should succeed
 
   $ hg unshelve --tool :merge-other --keep
   unshelving change 'default'
   temporarily committing pending changes (restore with 'hg unshelve --abort')
   rebasing shelved changes
   rebasing 6:2f694dd83a13 "changes to: second" (tip)
   merging a/a
   $ hg parents -q
   4:33f7f61e6c5e
   $ hg shelve -l
   default         (*)* changes to: second (glob)
   $ hg status
   M a/a
   A foo/foo
   $ cat a/a
   a
   c
   a
   $ cat > a/a << EOF
   > a
   > c
   > x
   > EOF
 
   $ HGMERGE=true hg unshelve
   unshelving change 'default'
   temporarily committing pending changes (restore with 'hg unshelve --abort')
   rebasing shelved changes
   rebasing 6:2f694dd83a13 "changes to: second" (tip)
   merging a/a
   note: rebase of 6:2f694dd83a13 created no changes to commit
   $ hg parents -q
   4:33f7f61e6c5e
   $ hg shelve -l
   $ hg status
   A foo/foo
   $ cat a/a
   a
   c
   x
 
 test keep and cleanup
 
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg shelve --list
   default         (*)* changes to: create conflict (glob)
   $ hg unshelve -k
   unshelving change 'default'
   $ hg shelve --list
   default         (*)* changes to: create conflict (glob)
   $ hg shelve --cleanup
   $ hg shelve --list
 
   $ hg shelve --cleanup --delete
   abort: options '--cleanup' and '--delete' may not be used together
   [255]
   $ hg shelve --cleanup --patch
   abort: options '--cleanup' and '--patch' may not be used together
   [255]
   $ hg shelve --cleanup --message MESSAGE
   abort: options '--cleanup' and '--message' may not be used together
   [255]
 
 test bookmarks
 
   $ hg bookmark test
   $ hg bookmark
    * test                      4:33f7f61e6c5e
   $ hg shelve
   shelved as test
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg bookmark
    * test                      4:33f7f61e6c5e
   $ hg unshelve
   unshelving change 'test'
   $ hg bookmark
    * test                      4:33f7f61e6c5e
 
 shelve should still work even if mq is disabled
 
   $ hg --config extensions.mq=! shelve
   shelved as test
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg --config extensions.mq=! shelve --list
   test            (*)* changes to: create conflict (glob)
   $ hg bookmark
    * test                      4:33f7f61e6c5e
   $ hg --config extensions.mq=! unshelve
   unshelving change 'test'
   $ hg bookmark
    * test                      4:33f7f61e6c5e
 
 shelve should leave dirstate clean (issue4055)
 
   $ cd ..
   $ hg init shelverebase
   $ cd shelverebase
   $ printf 'x\ny\n' > x
   $ echo z > z
   $ hg commit -Aqm xy
   $ echo z >> x
   $ hg commit -Aqm z
   $ hg up 0
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ printf 'a\nx\ny\nz\n' > x
   $ hg commit -Aqm xyz
   $ echo c >> z
   $ hg shelve
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg rebase -d 1 --config extensions.rebase=
   rebasing 2:323bfa07f744 "xyz" (tip)
   merging x
   saved backup bundle to $TESTTMP/shelverebase/.hg/strip-backup/323bfa07f744-78114325-backup.hg (glob)
   $ hg unshelve
   unshelving change 'default'
   rebasing shelved changes
   rebasing 4:82a0d7d6ba61 "changes to: xyz" (tip)
   $ hg status
   M z
 
   $ cd ..
 
 shelve should only unshelve pending changes (issue4068)
 
   $ hg init onlypendingchanges
   $ cd onlypendingchanges
   $ touch a
   $ hg ci -Aqm a
   $ touch b
   $ hg ci -Aqm b
   $ hg up -q 0
   $ touch c
   $ hg ci -Aqm c
 
   $ touch d
   $ hg add d
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg up -q 1
   $ hg unshelve
   unshelving change 'default'
   rebasing shelved changes
   rebasing 3:958bcbd1776e "changes to: c" (tip)
   $ hg status
   A d
 
 unshelve should work on an ancestor of the original commit
 
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg up 0
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg unshelve
   unshelving change 'default'
   rebasing shelved changes
   rebasing 3:013284d9655e "changes to: b" (tip)
   $ hg status
   A d
 
 test bug 4073 we need to enable obsolete markers for it
 
   $ cat >> $HGRCPATH << EOF
   > [experimental]
   > evolution=createmarkers
   > EOF
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg debugobsolete `hg --debug id -i -r 1`
   $ hg unshelve
   unshelving change 'default'
 
 unshelve should leave unknown files alone (issue4113)
 
   $ echo e > e
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg status
   ? e
   $ hg unshelve
   unshelving change 'default'
   $ hg status
   A d
   ? e
   $ cat e
   e
 
 unshelve should keep a copy of unknown files
 
   $ hg add e
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ echo z > e
   $ hg unshelve
   unshelving change 'default'
   $ cat e
   e
   $ cat e.orig
   z
 
 
 unshelve and conflicts with tracked and untracked files
 
  preparing:
 
   $ rm *.orig
   $ hg ci -qm 'commit stuff'
   $ hg phase -p null:
 
  no other changes - no merge:
 
   $ echo f > f
   $ hg add f
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ echo g > f
   $ hg unshelve
   unshelving change 'default'
   $ hg st
   A f
   ? f.orig
   $ cat f
   f
   $ cat f.orig
   g
 
  other uncommitted changes - merge:
 
   $ hg st
   A f
   ? f.orig
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg log -G --template '{rev}  {desc|firstline}  {author}' -R bundle://.hg/shelved/default.hg -r 'bundle()'
   o  4  changes to: commit stuff  shelve@localhost
   |
   ~
   $ hg log -G --template '{rev}  {desc|firstline}  {author}'
   @  3  commit stuff  test
   |
   | o  2  c  test
   |/
   o  0  a  test
   
   $ mv f.orig f
   $ echo 1 > a
   $ hg unshelve --date '1073741824 0'
   unshelving change 'default'
   temporarily committing pending changes (restore with 'hg unshelve --abort')
   rebasing shelved changes
   rebasing 5:81152db69da7 "changes to: commit stuff" (tip)
   merging f
   warning: conflicts while merging f! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [1]
   $ hg log -G --template '{rev}  {desc|firstline}  {author}  {date|isodate}'
   @  5  changes to: commit stuff  shelve@localhost  1970-01-01 00:00 +0000
   |
   | @  4  pending changes temporary commit  shelve@localhost  2004-01-10 13:37 +0000
   |/
   o  3  commit stuff  test  1970-01-01 00:00 +0000
   |
   | o  2  c  test  1970-01-01 00:00 +0000
   |/
   o  0  a  test  1970-01-01 00:00 +0000
   
   $ hg st
   M f
   ? f.orig
   $ cat f
   <<<<<<< dest:   5f6b880e719b - shelve: pending changes temporary commit
   g
   =======
   f
   >>>>>>> source: 81152db69da7 - shelve: changes to: commit stuff
   $ cat f.orig
   g
   $ hg unshelve --abort -t false
   tool option will be ignored
   rebase aborted
   unshelve of 'default' aborted
   $ hg st
   M a
   ? f.orig
   $ cat f.orig
   g
   $ hg unshelve
   unshelving change 'default'
   temporarily committing pending changes (restore with 'hg unshelve --abort')
   rebasing shelved changes
   rebasing 5:81152db69da7 "changes to: commit stuff" (tip)
   $ hg st
   M a
   A f
   ? f.orig
 
  other committed changes - merge:
 
   $ hg shelve f
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg ci a -m 'intermediate other change'
   $ mv f.orig f
   $ hg unshelve
   unshelving change 'default'
   rebasing shelved changes
   rebasing 5:81152db69da7 "changes to: commit stuff" (tip)
   merging f
   warning: conflicts while merging f! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [1]
   $ hg st
   M f
   ? f.orig
   $ cat f
   <<<<<<< dest:   * - test: intermediate other change (glob)
   g
   =======
   f
   >>>>>>> source: 81152db69da7 - shelve: changes to: commit stuff
   $ cat f.orig
   g
   $ hg unshelve --abort
   rebase aborted
   unshelve of 'default' aborted
   $ hg st
   ? f.orig
   $ cat f.orig
   g
   $ hg shelve --delete default
 
 Recreate some conflict again
 
   $ cd ../repo
   $ hg up -C -r 3
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (leaving bookmark test)
   $ echo y >> a/a
   $ hg shelve
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg up test
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (activating bookmark test)
   $ hg bookmark
    * test                      4:33f7f61e6c5e
   $ hg unshelve
   unshelving change 'default'
   rebasing shelved changes
   rebasing 5:e42a7da90865 "changes to: second" (tip)
   merging a/a
   warning: conflicts while merging a/a! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [1]
   $ hg bookmark
      test                      4:33f7f61e6c5e
 
 Test that resolving all conflicts in one direction (so that the rebase
 is a no-op), works (issue4398)
 
   $ hg revert -a -r .
   reverting a/a (glob)
   $ hg resolve -m a/a
   (no more unresolved files)
   continue: hg unshelve --continue
   $ hg unshelve -c
   rebasing 5:e42a7da90865 "changes to: second" (tip)
   note: rebase of 5:e42a7da90865 created no changes to commit
   unshelve of 'default' complete
   $ hg bookmark
    * test                      4:33f7f61e6c5e
   $ hg diff
   $ hg status
   ? a/a.orig
   ? foo/foo
   $ hg summary
   parent: 4:33f7f61e6c5e tip
    create conflict
   branch: default
   bookmarks: *test
   commit: 2 unknown (clean)
   update: (current)
   phases: 5 draft
 
   $ hg shelve --delete --stat
   abort: options '--delete' and '--stat' may not be used together
   [255]
   $ hg shelve --delete --name NAME
   abort: options '--delete' and '--name' may not be used together
   [255]
 
 Test interactive shelve
   $ cat <<EOF >> $HGRCPATH
   > [ui]
   > interactive = true
   > EOF
   $ echo 'a' >> a/b
   $ cat a/a >> a/b
   $ echo 'x' >> a/b
   $ mv a/b a/a
   $ echo 'a' >> foo/foo
   $ hg st
   M a/a
   ? a/a.orig
   ? foo/foo
   $ cat a/a
   a
   a
   c
   x
   x
   $ cat foo/foo
   foo
   a
   $ hg shelve --interactive --config ui.interactive=false
   abort: running non-interactively
   [255]
   $ hg shelve --interactive << EOF
   > y
   > y
   > n
   > EOF
   diff --git a/a/a b/a/a
   2 hunks, 2 lines changed
   examine changes to 'a/a'? [Ynesfdaq?] y
   
   @@ -1,3 +1,4 @@
   +a
    a
    c
    x
   record change 1/2 to 'a/a'? [Ynesfdaq?] y
   
   @@ -1,3 +2,4 @@
    a
    c
    x
   +x
   record change 2/2 to 'a/a'? [Ynesfdaq?] n
   
   shelved as test
   merging a/a
   0 files updated, 1 files merged, 0 files removed, 0 files unresolved
   $ cat a/a
   a
   c
   x
   x
   $ cat foo/foo
   foo
   a
   $ hg st
   M a/a
   ? foo/foo
   $ hg bookmark
    * test                      4:33f7f61e6c5e
   $ hg unshelve
   unshelving change 'test'
   temporarily committing pending changes (restore with 'hg unshelve --abort')
   rebasing shelved changes
   rebasing 6:96a1354f65f6 "changes to: create conflict" (tip)
   merging a/a
   $ hg bookmark
    * test                      4:33f7f61e6c5e
   $ cat a/a
   a
   a
   c
   x
   x
 
 shelve --patch and shelve --stat should work with valid shelfnames
 
   $ hg up --clean .
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (leaving bookmark test)
   $ hg shelve --list
   $ echo 'patch a' > shelf-patch-a
   $ hg add shelf-patch-a
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ echo 'patch b' > shelf-patch-b
   $ hg add shelf-patch-b
   $ hg shelve
   shelved as default-01
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg shelve --patch default default-01
   default-01      (*)* changes to: create conflict (glob)
   
   diff --git a/shelf-patch-b b/shelf-patch-b
   new file mode 100644
   --- /dev/null
   +++ b/shelf-patch-b
   @@ -0,0 +1,1 @@
   +patch b
   default         (*)* changes to: create conflict (glob)
   
   diff --git a/shelf-patch-a b/shelf-patch-a
   new file mode 100644
   --- /dev/null
   +++ b/shelf-patch-a
   @@ -0,0 +1,1 @@
   +patch a
   $ hg shelve --stat default default-01
   default-01      (*)* changes to: create conflict (glob)
    shelf-patch-b |  1 +
    1 files changed, 1 insertions(+), 0 deletions(-)
   default         (*)* changes to: create conflict (glob)
    shelf-patch-a |  1 +
    1 files changed, 1 insertions(+), 0 deletions(-)
   $ hg shelve --patch default
   default         (*)* changes to: create conflict (glob)
   
   diff --git a/shelf-patch-a b/shelf-patch-a
   new file mode 100644
   --- /dev/null
   +++ b/shelf-patch-a
   @@ -0,0 +1,1 @@
   +patch a
   $ hg shelve --stat default
   default         (*)* changes to: create conflict (glob)
    shelf-patch-a |  1 +
    1 files changed, 1 insertions(+), 0 deletions(-)
   $ hg shelve --patch nonexistentshelf
   abort: cannot find shelf nonexistentshelf
   [255]
   $ hg shelve --stat nonexistentshelf
   abort: cannot find shelf nonexistentshelf
   [255]
   $ hg shelve --patch default nonexistentshelf
   abort: cannot find shelf nonexistentshelf
   [255]
   $ hg shelve --patch
   abort: --patch expects at least one shelf
   [255]
 
   $ cd ..
 
 Shelve from general delta repo uses bundle2 on disk
 --------------------------------------------------
 
 no general delta
 
   $ hg clone --pull repo bundle1 --config format.usegeneraldelta=0
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 5 changesets with 8 changes to 6 files
   updating to branch default
   6 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cd bundle1
   $ echo babar > jungle
   $ hg add jungle
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg debugbundle .hg/shelved/*.hg
   45993d65fe9dc3c6d8764b9c3b07fa831ee7d92d
   $ cd ..
 
 with general delta
 
   $ hg clone --pull repo bundle2 --config format.usegeneraldelta=1
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 5 changesets with 8 changes to 6 files
   updating to branch default
   6 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cd bundle2
   $ echo babar > jungle
   $ hg add jungle
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg debugbundle .hg/shelved/*.hg
   Stream params: sortdict([('Compression', 'BZ')])
   changegroup -- "sortdict([('version', '02'), ('nbchanges', '1')])"
       45993d65fe9dc3c6d8764b9c3b07fa831ee7d92d
   $ cd ..
 
 Test visibility of in-memory changes inside transaction to external hook
 ------------------------------------------------------------------------
 
   $ cd repo
 
   $ echo xxxx >> x
   $ hg commit -m "#5: changes to invoke rebase"
 
   $ cat > $TESTTMP/checkvisibility.sh <<EOF
   > echo "==== \$1:"
   > hg parents --template "VISIBLE {rev}:{node|short}\n"
   > # test that pending changes are hidden
   > unset HG_PENDING
   > hg parents --template "ACTUAL  {rev}:{node|short}\n"
   > echo "===="
   > EOF
 
   $ cat >> .hg/hgrc <<EOF
   > [defaults]
   > # to fix hash id of temporary revisions
   > unshelve = --date '0 0'
   > EOF
 
 "hg unshelve" at REV5 implies steps below:
 
 (1) commit changes in the working directory (REV6)
 (2) unbundle shelved revision (REV7)
 (3) rebase: merge REV7 into REV6 (REV6 => REV6, REV7)
 (4) rebase: commit merged revision (REV8)
 (5) rebase: update to REV6 (REV8 => REV6)
 (6) update to REV5 (REV6 => REV5)
 (7) abort transaction
 
 == test visibility to external preupdate hook
 
   $ cat >> .hg/hgrc <<EOF
   > [hooks]
   > preupdate.visibility = sh $TESTTMP/checkvisibility.sh preupdate
   > EOF
 
   $ echo nnnn >> n
 
   $ sh $TESTTMP/checkvisibility.sh before-unshelving
   ==== before-unshelving:
   VISIBLE 5:703117a2acfb
   ACTUAL  5:703117a2acfb
   ====
 
   $ hg unshelve --keep default
   temporarily committing pending changes (restore with 'hg unshelve --abort')
   rebasing shelved changes
   rebasing 7:206bf5d4f922 "changes to: create conflict" (tip)
   ==== preupdate:
   VISIBLE 6:66b86db80ee4
   ACTUAL  5:703117a2acfb
   ====
   ==== preupdate:
   VISIBLE 8:a0e04704317e
   ACTUAL  5:703117a2acfb
   ====
   ==== preupdate:
   VISIBLE 6:66b86db80ee4
   ACTUAL  5:703117a2acfb
   ====
 
   $ cat >> .hg/hgrc <<EOF
   > [hooks]
   > preupdate.visibility =
   > EOF
 
   $ sh $TESTTMP/checkvisibility.sh after-unshelving
   ==== after-unshelving:
   VISIBLE 5:703117a2acfb
   ACTUAL  5:703117a2acfb
   ====
 
 == test visibility to external update hook
 
   $ hg update -q -C 5
 
   $ cat >> .hg/hgrc <<EOF
   > [hooks]
   > update.visibility = sh $TESTTMP/checkvisibility.sh update
   > EOF
 
   $ echo nnnn >> n
 
   $ sh $TESTTMP/checkvisibility.sh before-unshelving
   ==== before-unshelving:
   VISIBLE 5:703117a2acfb
   ACTUAL  5:703117a2acfb
   ====
 
   $ hg unshelve --keep default
   temporarily committing pending changes (restore with 'hg unshelve --abort')
   rebasing shelved changes
   rebasing 7:206bf5d4f922 "changes to: create conflict" (tip)
   ==== update:
   VISIBLE 6:66b86db80ee4
   VISIBLE 7:206bf5d4f922
   ACTUAL  5:703117a2acfb
   ====
   ==== update:
   VISIBLE 6:66b86db80ee4
   ACTUAL  5:703117a2acfb
   ====
   ==== update:
   VISIBLE 5:703117a2acfb
   ACTUAL  5:703117a2acfb
   ====
 
   $ cat >> .hg/hgrc <<EOF
   > [hooks]
   > update.visibility =
   > EOF
 
   $ sh $TESTTMP/checkvisibility.sh after-unshelving
   ==== after-unshelving:
   VISIBLE 5:703117a2acfb
   ACTUAL  5:703117a2acfb
   ====
 
   $ cd ..
 
 test .orig files go where the user wants them to
 ---------------------------------------------------------------
   $ hg init salvage
   $ cd salvage
   $ echo 'content' > root
   $ hg commit -A -m 'root' -q
   $ echo '' > root
   $ hg shelve -q
   $ echo 'contADDent' > root
   $ hg unshelve -q --config 'ui.origbackuppath=.hg/origbackups'
   warning: conflicts while merging root! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [1]
   $ ls .hg/origbackups
   root.orig
   $ rm -rf .hg/origbackups
 
 test Abort unshelve always gets user out of the unshelved state
 ---------------------------------------------------------------
 Wreak havoc on the unshelve process
   $ rm .hg/unshelverebasestate
   $ hg unshelve --abort
   unshelve of 'default' aborted
   abort: (No such file or directory|The system cannot find the file specified) (re)
   [255]
 Can the user leave the current state?
   $ hg up -C .
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
 Try again but with a corrupted shelve state file
   $ hg strip -r 2 -r 1 -q
   $ hg up -r 0 -q
   $ echo '' > root
   $ hg shelve -q
   $ echo 'contADDent' > root
   $ hg unshelve -q
   warning: conflicts while merging root! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [1]
   $ sed 's/ae8c668541e8/123456789012/' .hg/shelvedstate > ../corrupt-shelvedstate
   $ mv ../corrupt-shelvedstate .hg/histedit-state
   $ hg unshelve --abort 2>&1 | grep 'rebase aborted'
   rebase aborted
   $ hg up -C .
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
   $ cd ..
 
 Keep active bookmark while (un)shelving even on shared repo (issue4940)
 -----------------------------------------------------------------------
 
   $ cat <<EOF >> $HGRCPATH
   > [extensions]
   > share =
   > EOF
 
   $ hg bookmarks -R repo
      test                      4:33f7f61e6c5e
   $ hg share -B repo share
   updating working directory
   6 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cd share
 
   $ hg bookmarks
      test                      4:33f7f61e6c5e
   $ hg bookmarks foo
   $ hg bookmarks
    * foo                       5:703117a2acfb
      test                      4:33f7f61e6c5e
   $ echo x >> x
   $ hg shelve
   shelved as foo
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bookmarks
    * foo                       5:703117a2acfb
      test                      4:33f7f61e6c5e
 
   $ hg unshelve
   unshelving change 'foo'
   $ hg bookmarks
    * foo                       5:703117a2acfb
      test                      4:33f7f61e6c5e
 
   $ cd ..
 
 Shelve and unshelve unknown files. For the purposes of unshelve, a shelved
 unknown file is the same as a shelved added file, except that it will be in
 unknown state after unshelve if and only if it was either absent or unknown
 before the unshelve operation.
 
   $ hg init unknowns
   $ cd unknowns
 
 The simplest case is if I simply have an unknown file that I shelve and unshelve
 
   $ echo unknown > unknown
   $ hg status
   ? unknown
   $ hg shelve --unknown
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg status
   $ hg unshelve
   unshelving change 'default'
   $ hg status
   ? unknown
   $ rm unknown
 
 If I shelve, add the file, and unshelve, does it stay added?
 
   $ echo unknown > unknown
   $ hg shelve -u
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg status
   $ touch unknown
   $ hg add unknown
   $ hg status
   A unknown
   $ hg unshelve
   unshelving change 'default'
   temporarily committing pending changes (restore with 'hg unshelve --abort')
   rebasing shelved changes
   rebasing 1:098df96e7410 "(changes in empty repository)" (tip)
   merging unknown
   $ hg status
   A unknown
   $ hg forget unknown
   $ rm unknown
 
 And if I shelve, commit, then unshelve, does it become modified?
 
   $ echo unknown > unknown
   $ hg shelve -u
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg status
   $ touch unknown
   $ hg add unknown
   $ hg commit -qm "Add unknown"
   $ hg status
   $ hg unshelve
   unshelving change 'default'
   rebasing shelved changes
   rebasing 1:098df96e7410 "(changes in empty repository)" (tip)
   merging unknown
   $ hg status
   M unknown
   $ hg remove --force unknown
   $ hg commit -qm "Remove unknown"
 
   $ cd ..
 
 We expects that non-bare shelve keeps newly created branch in
 working directory.
 
   $ hg init shelve-preserve-new-branch
   $ cd shelve-preserve-new-branch
   $ echo "a" >> a
   $ hg add a
   $ echo "b" >> b
   $ hg add b
   $ hg commit -m "ab"
   $ echo "aa" >> a
   $ echo "bb" >> b
   $ hg branch new-branch
   marked working directory as branch new-branch
   (branches are permanent and global, did you want a bookmark?)
   $ hg status
   M a
   M b
   $ hg branch
   new-branch
   $ hg shelve a
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg branch
   new-branch
   $ hg status
   M b
   $ touch "c" >> c
   $ hg add c
   $ hg status
   M b
   A c
   $ hg shelve --exclude c
   shelved as default-01
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg branch
   new-branch
   $ hg status
   A c
   $ hg shelve --include c
   shelved as default-02
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg branch
   new-branch
   $ hg status
   $ echo "d" >> d
   $ hg add d
   $ hg status
   A d
 
 We expect that bare-shelve will not keep branch in current working directory.
 
   $ hg shelve
   shelved as default-03
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg branch
   default
   $ cd ..
 
 When i shelve commit on newly created branch i expect
 that after unshelve newly created branch will be preserved.
 
   $ hg init shelve_on_new_branch_simple
   $ cd shelve_on_new_branch_simple
   $ echo "aaa" >> a
   $ hg commit -A -m "a"
   adding a
   $ hg branch
   default
   $ hg branch test
   marked working directory as branch test
   (branches are permanent and global, did you want a bookmark?)
   $ echo "bbb" >> a
   $ hg status
   M a
   $ hg shelve
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg branch
   default
   $ echo "bbb" >> b
   $ hg status
   ? b
   $ hg unshelve
   unshelving change 'default'
   marked working directory as branch test
   $ hg status
   M a
   ? b
   $ hg branch
   test
   $ cd ..
 
 When i shelve commit on newly created branch, make
 some changes, unshelve it and running into merge
 conflicts i expect that after fixing them and
 running unshelve --continue newly created branch
 will be preserved.
 
   $ hg init shelve_on_new_branch_conflict
   $ cd shelve_on_new_branch_conflict
   $ echo "aaa" >> a
   $ hg commit -A -m "a"
   adding a
   $ hg branch
   default
   $ hg branch test
   marked working directory as branch test
   (branches are permanent and global, did you want a bookmark?)
   $ echo "bbb" >> a
   $ hg status
   M a
   $ hg shelve
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg branch
   default
   $ echo "ccc" >> a
   $ hg status
   M a
   $ hg unshelve
   unshelving change 'default'
   temporarily committing pending changes (restore with 'hg unshelve --abort')
   rebasing shelved changes
   rebasing 2:425c97ef07f3 "changes to: a" (tip)
   merging a
   warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [1]
   $ echo "aaabbbccc" > a
   $ rm a.orig
   $ hg resolve --mark a
   (no more unresolved files)
   continue: hg unshelve --continue
   $ hg unshelve --continue
   rebasing 2:425c97ef07f3 "changes to: a" (tip)
   marked working directory as branch test
   unshelve of 'default' complete
   $ cat a
   aaabbbccc
   $ hg status
   M a
   $ hg branch
   test
   $ hg commit -m "test-commit"
 
 When i shelve on test branch, update to default branch
 and unshelve i expect that it will not preserve previous
 test branch.
 
   $ echo "xxx" > b
   $ hg add b
   $ hg shelve
   shelved as test
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg update -r default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg unshelve
   unshelving change 'test'
   rebasing shelved changes
   rebasing 2:357525f34729 "changes to: test-commit" (tip)
   $ hg status
   A b
   $ hg branch
   default
   $ cd ..
 
 When i unshelve resulting in merge conflicts and makes saved
 file shelvedstate looks like in previous versions in
 mercurial(without restore branch information in 7th line) i
 expect that after resolving conflicts and successfully
 running 'shelve --continue' the branch information won't be
 restored and branch will be unchanged.
 
 shelve on new branch, conflict with previous shelvedstate
 
   $ hg init conflict
   $ cd conflict
   $ echo "aaa" >> a
   $ hg commit -A -m "a"
   adding a
   $ hg branch
   default
   $ hg branch test
   marked working directory as branch test
   (branches are permanent and global, did you want a bookmark?)
   $ echo "bbb" >> a
   $ hg status
   M a
   $ hg shelve
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg branch
   default
   $ echo "ccc" >> a
   $ hg status
   M a
   $ hg unshelve
   unshelving change 'default'
   temporarily committing pending changes (restore with 'hg unshelve --abort')
   rebasing shelved changes
   rebasing 2:425c97ef07f3 "changes to: a" (tip)
   merging a
   warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [1]
 
 Removing restore branch information from shelvedstate file(making it looks like
 in previous versions) and running unshelve --continue
 
   $ head -n 6 < .hg/shelvedstate > .hg/shelvedstate_oldformat
   $ rm .hg/shelvedstate
   $ mv .hg/shelvedstate_oldformat .hg/shelvedstate
 
   $ echo "aaabbbccc" > a
   $ rm a.orig
   $ hg resolve --mark a
   (no more unresolved files)
   continue: hg unshelve --continue
   $ hg unshelve --continue
   rebasing 2:425c97ef07f3 "changes to: a" (tip)
   unshelve of 'default' complete
   $ cat a
   aaabbbccc
   $ hg status
   M a
   $ hg branch
   default
   $ cd ..
 
 On non bare shelve the branch information shouldn't be restored
 
   $ hg init bare_shelve_on_new_branch
   $ cd bare_shelve_on_new_branch
   $ echo "aaa" >> a
   $ hg commit -A -m "a"
   adding a
   $ hg branch
   default
   $ hg branch test
   marked working directory as branch test
   (branches are permanent and global, did you want a bookmark?)
   $ echo "bbb" >> a
   $ hg status
   M a
   $ hg shelve a
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg branch
   test
   $ hg branch default
   marked working directory as branch default
   (branches are permanent and global, did you want a bookmark?)
   $ echo "bbb" >> b
   $ hg status
   ? b
   $ hg unshelve
   unshelving change 'default'
   $ hg status
   M a
   ? b
   $ hg branch
   default
   $ cd ..
 
 Prepare unshelve with a corrupted shelvedstate
   $ hg init r1 && cd r1
   $ echo text1 > file && hg add file
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ echo text2 > file && hg ci -Am text1
   adding file
   $ hg unshelve
   unshelving change 'default'
   rebasing shelved changes
   rebasing 1:396ea74229f9 "(changes in empty repository)" (tip)
   merging file
   warning: conflicts while merging file! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [1]
   $ echo somethingsomething > .hg/shelvedstate
 
 Unshelve --continue fails with appropriate message if shelvedstate is corrupted
   $ hg unshelve --continue
   abort: corrupted shelved state file
   (please run hg unshelve --abort to abort unshelve operation)
   [255]
 
 Unshelve --abort works with a corrupted shelvedstate
   $ hg unshelve --abort
   could not read shelved state file, your working copy may be in an unexpected state
   please update to some commit
 
 Unshelve --abort fails with appropriate message if there's no unshelve in
 progress
   $ hg unshelve --abort
   abort: no unshelve in progress
   [255]
   $ cd ..
 
 Unshelve respects --keep even if user intervention is needed
   $ hg init unshelvekeep && cd unshelvekeep
   $ echo 1 > file && hg ci -Am 1
   adding file
   $ echo 2 >> file
   $ hg shelve
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo 3 >> file && hg ci -Am 13
   $ hg shelve --list
-  default         (1s ago)    changes to: 1
+  default         (*s ago)    changes to: 1 (glob)
   $ hg unshelve --keep
   unshelving change 'default'
   rebasing shelved changes
   rebasing 2:3fbe6fbb0bef "changes to: 1" (tip)
   merging file
   warning: conflicts while merging file! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [1]
   $ hg resolve --mark file
   (no more unresolved files)
   continue: hg unshelve --continue
   $ hg unshelve --continue
   rebasing 2:3fbe6fbb0bef "changes to: 1" (tip)
   unshelve of 'default' complete
   $ hg shelve --list
   default         (*s ago)    changes to: 1 (glob)
   $ cd ..
 
 Unshelving when there are deleted files does not crash (issue4176)
   $ hg init unshelve-deleted-file && cd unshelve-deleted-file
   $ echo a > a && echo b > b && hg ci -Am ab
   adding a
   adding b
   $ echo aa > a && hg shelve
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ rm b
   $ hg st
   ! b
   $ hg unshelve
   unshelving change 'default'
   $ hg shelve
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ rm a && echo b > b
   $ hg st
   ! a
   $ hg unshelve
   unshelving change 'default'
   abort: shelved change touches missing files
   (run hg status to see which files are missing)
   [255]
   $ hg st
   ! a