Patchwork D6553: shelve: move shelve extension to core

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Date June 20, 2019, 7:09 p.m.
Message ID <8f6ce8f60eda63a873e1e9da1e834307@localhost.localdomain>
Download mbox | patch
Permalink /patch/40629/
State Not Applicable
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phabricator - June 20, 2019, 7:09 p.m.
navaneeth.suresh updated this revision to Diff 15621.

REPOSITORY
  rHG Mercurial

CHANGES SINCE LAST UPDATE
  https://phab.mercurial-scm.org/D6553?vs=15616&id=15621

CHANGES SINCE LAST ACTION
  https://phab.mercurial-scm.org/D6553/new/

REVISION DETAIL
  https://phab.mercurial-scm.org/D6553

AFFECTED FILES
  contrib/win32/mercurial.ini
  hgext/shelve.py
  mercurial/cmdutil.py
  mercurial/commands.py
  mercurial/configitems.py
  mercurial/shelve.py
  mercurial/ui.py
  tests/test-bookflow.t
  tests/test-completion.t
  tests/test-copytrace-heuristics.t
  tests/test-globalopts.t
  tests/test-help-hide.t
  tests/test-help.t
  tests/test-hgweb-json.t
  tests/test-keyword.t
  tests/test-shelve.t
  tests/test-shelve2.t
  tests/test-treemanifest.t

CHANGE DETAILS




To: navaneeth.suresh, #hg-reviewers
Cc: mjpieters, mercurial-devel

Patch

diff --git a/tests/test-treemanifest.t b/tests/test-treemanifest.t
--- a/tests/test-treemanifest.t
+++ b/tests/test-treemanifest.t
@@ -357,10 +357,10 @@ 
 Shelving and unshelving should work
 
   $ echo foo >> dir1/a
-  $ hg --config extensions.shelve= shelve
+  $ hg shelve
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
-  $ hg --config extensions.shelve= unshelve
+  $ hg unshelve
   unshelving change 'default'
   $ hg diff --nodates
   diff -r 708a273da119 dir1/a
diff --git a/tests/test-shelve2.t b/tests/test-shelve2.t
--- a/tests/test-shelve2.t
+++ b/tests/test-shelve2.t
@@ -3,7 +3,6 @@ 
   $ cat <<EOF >> $HGRCPATH
   > [extensions]
   > mq =
-  > shelve =
   > [defaults]
   > diff = --nodates --git
   > qnew = --date '0 0'
diff --git a/tests/test-shelve.t b/tests/test-shelve.t
--- a/tests/test-shelve.t
+++ b/tests/test-shelve.t
@@ -3,7 +3,6 @@ 
   $ cat <<EOF >> $HGRCPATH
   > [extensions]
   > mq =
-  > shelve =
   > [defaults]
   > diff = --nodates --git
   > qnew = --date '0 0'
@@ -65,8 +64,6 @@ 
       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
diff --git a/tests/test-keyword.t b/tests/test-keyword.t
--- a/tests/test-keyword.t
+++ b/tests/test-keyword.t
@@ -1248,11 +1248,6 @@ 
 
 Test restricted mode with unshelve
 
-  $ cat <<EOF >> $HGRCPATH
-  > [extensions]
-  > shelve =
-  > EOF
-
   $ echo xxxx >> a
   $ hg diff
   diff -r 800511b3a22d a
diff --git a/tests/test-hgweb-json.t b/tests/test-hgweb-json.t
--- a/tests/test-hgweb-json.t
+++ b/tests/test-hgweb-json.t
@@ -2057,6 +2057,10 @@ 
         "topic": "root"
       },
       {
+        "summary": "save and set aside changes from the working directory",
+        "topic": "shelve"
+      },
+      {
         "summary": "add one or more tags for the current or given revision",
         "topic": "tag"
       },
@@ -2069,6 +2073,10 @@ 
         "topic": "unbundle"
       },
       {
+        "summary": "restore a shelved change to the working directory",
+        "topic": "unshelve"
+      },
+      {
         "summary": "verify the integrity of the repository",
         "topic": "verify"
       },
diff --git a/tests/test-help.t b/tests/test-help.t
--- a/tests/test-help.t
+++ b/tests/test-help.t
@@ -112,8 +112,10 @@ 
    resolve       redo merges or set/view the merge status of files
    revert        restore files to their checkout state
    root          print the root (top) of the current working directory
+   shelve        save and set aside changes from the working directory
    status        show changed files in the working directory
    summary       summarize working directory state
+   unshelve      restore a shelved change to the working directory
    update        update working directory (or switch revisions)
   
   Change import/export:
@@ -238,8 +240,10 @@ 
    resolve       redo merges or set/view the merge status of files
    revert        restore files to their checkout state
    root          print the root (top) of the current working directory
+   shelve        save and set aside changes from the working directory
    status        show changed files in the working directory
    summary       summarize working directory state
+   unshelve      restore a shelved change to the working directory
    update        update working directory (or switch revisions)
   
   Change import/export:
@@ -375,7 +379,6 @@ 
        relink        recreates hardlinks between repository clones
        schemes       extend schemes with shortcuts to repository swarms
        share         share a common history between several working directories
-       shelve        save and restore changes to the working directory
        strip         strip changesets and their descendants from history
        transplant    command to transplant changesets from another branch
        win32mbcs     allow the use of MBCS paths with problematic encodings
@@ -2690,6 +2693,13 @@ 
   (no help text available)
   </td></tr>
   <tr><td>
+  <a href="/help/shelve">
+  shelve
+  </a>
+  </td><td>
+  save and set aside changes from the working directory
+  </td></tr>
+  <tr><td>
   <a href="/help/tag">
   tag
   </a>
@@ -2711,6 +2721,13 @@ 
   apply one or more bundle files
   </td></tr>
   <tr><td>
+  <a href="/help/unshelve">
+  unshelve
+  </a>
+  </td><td>
+  restore a shelved change to the working directory
+  </td></tr>
+  <tr><td>
   <a href="/help/verify">
   verify
   </a>
diff --git a/tests/test-help-hide.t b/tests/test-help-hide.t
--- a/tests/test-help-hide.t
+++ b/tests/test-help-hide.t
@@ -60,8 +60,10 @@ 
    resolve       redo merges or set/view the merge status of files
    revert        restore files to their checkout state
    root          print the root (top) of the current working directory
+   shelve        save and set aside changes from the working directory
    status        show changed files in the working directory
    summary       summarize working directory state
+   unshelve      restore a shelved change to the working directory
    update        update working directory (or switch revisions)
   
   Change import/export:
@@ -194,8 +196,10 @@ 
    resolve       redo merges or set/view the merge status of files
    revert        restore files to their checkout state
    root          print the root (top) of the current working directory
+   shelve        save and set aside changes from the working directory
    status        show changed files in the working directory
    summary       summarize working directory state
+   unshelve      restore a shelved change to the working directory
    update        update working directory (or switch revisions)
   
   Change import/export:
diff --git a/tests/test-globalopts.t b/tests/test-globalopts.t
--- a/tests/test-globalopts.t
+++ b/tests/test-globalopts.t
@@ -356,8 +356,10 @@ 
    resolve       redo merges or set/view the merge status of files
    revert        restore files to their checkout state
    root          print the root (top) of the current working directory
+   shelve        save and set aside changes from the working directory
    status        show changed files in the working directory
    summary       summarize working directory state
+   unshelve      restore a shelved change to the working directory
    update        update working directory (or switch revisions)
   
   Change import/export:
@@ -486,8 +488,10 @@ 
    resolve       redo merges or set/view the merge status of files
    revert        restore files to their checkout state
    root          print the root (top) of the current working directory
+   shelve        save and set aside changes from the working directory
    status        show changed files in the working directory
    summary       summarize working directory state
+   unshelve      restore a shelved change to the working directory
    update        update working directory (or switch revisions)
   
   Change import/export:
diff --git a/tests/test-copytrace-heuristics.t b/tests/test-copytrace-heuristics.t
--- a/tests/test-copytrace-heuristics.t
+++ b/tests/test-copytrace-heuristics.t
@@ -15,7 +15,6 @@ 
   $ cat >> $HGRCPATH << EOF
   > [extensions]
   > rebase=
-  > shelve=
   > [alias]
   > l = log -G -T 'rev: {rev}\ndesc: {desc}\n'
   > pl = log -G -T 'rev: {rev}, phase: {phase}\ndesc: {desc}\n'
diff --git a/tests/test-completion.t b/tests/test-completion.t
--- a/tests/test-completion.t
+++ b/tests/test-completion.t
@@ -45,12 +45,14 @@ 
   rollback
   root
   serve
+  shelve
   status
   summary
   tag
   tags
   tip
   unbundle
+  unshelve
   update
   verify
   version
@@ -228,7 +230,7 @@ 
 Show an error if we use --options with an ambiguous abbreviation
   $ hg debugcomplete --options s
   hg: command 's' is ambiguous:
-      serve showconfig status summary
+      serve shelve showconfig status summary
   [255]
 
 Show all commands + options
@@ -340,12 +342,14 @@ 
   rollback: dry-run, force
   root: 
   serve: accesslog, daemon, daemon-postexec, errorlog, port, address, prefix, name, web-conf, webdir-conf, pid-file, stdio, cmdserver, templates, style, ipv6, certificate, print-url, subrepos
+  shelve: addremove, unknown, cleanup, date, delete, edit, keep, list, message, name, patch, interactive, stat, include, exclude
   status: all, modified, added, removed, deleted, clean, unknown, ignored, no-status, terse, copies, print0, rev, change, include, exclude, subrepos, template
   summary: remote
   tag: force, local, rev, remove, edit, message, date, user
   tags: template
   tip: patch, git, style, template
   unbundle: update
+  unshelve: abort, continue, keep, name, tool, date
   update: clean, check, merge, date, rev, tool
   verify: full
   version: template
diff --git a/tests/test-bookflow.t b/tests/test-bookflow.t
--- a/tests/test-bookflow.t
+++ b/tests/test-bookflow.t
@@ -215,11 +215,11 @@ 
   $ hg diff --stat
    test |  1 +
    1 files changed, 1 insertions(+), 0 deletions(-)
-  $ hg --config extensions.shelve= shelve
+  $ hg shelve
   shelved as Z
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg pull -uq
-  $ hg --trace --config extensions.shelve= unshelve
+  $ hg unshelve
   unshelving change 'Z'
   rebasing shelved changes
   $ hg diff --stat
diff --git a/mercurial/ui.py b/mercurial/ui.py
--- a/mercurial/ui.py
+++ b/mercurial/ui.py
@@ -102,7 +102,6 @@ 
 #
 # histedit =
 # rebase =
-# shelve =
 # uncommit =
 """,
 
diff --git a/mercurial/shelve.py b/mercurial/shelve.py
new file mode 100644
--- /dev/null
+++ b/mercurial/shelve.py
@@ -0,0 +1,970 @@ 
+# shelve.py - save/restore working directory state
+#
+# Copyright 2013 Facebook, Inc.
+#
+# This software may be used and distributed according to the terms of the
+# GNU General Public License version 2 or any later version.
+
+"""save and restore changes to the working directory
+
+The "hg shelve" command saves changes made to the working directory
+and reverts those changes, resetting the working directory to a clean
+state.
+
+Later on, the "hg unshelve" command restores the changes saved by "hg
+shelve". Changes can be restored even after updating to a different
+parent, in which case Mercurial's merge machinery will resolve any
+conflicts if necessary.
+
+You can have more than one shelved change outstanding at a time; each
+shelved change has a distinct name. For details, see the help for "hg
+shelve".
+"""
+from __future__ import absolute_import
+
+import collections
+import errno
+import itertools
+import stat
+
+from .i18n import _
+from . import (
+    bookmarks,
+    bundle2,
+    bundlerepo,
+    changegroup,
+    cmdutil,
+    discovery,
+    error,
+    exchange,
+    hg,
+    lock as lockmod,
+    mdiff,
+    merge,
+    node as nodemod,
+    patch,
+    phases,
+    pycompat,
+    repair,
+    scmutil,
+    templatefilters,
+    util,
+    vfs as vfsmod,
+)
+from .utils import (
+    dateutil,
+    stringutil,
+)
+
+backupdir = 'shelve-backup'
+shelvedir = 'shelved'
+shelvefileextensions = ['hg', 'patch', 'shelve']
+# universal extension is present in all types of shelves
+patchextension = 'patch'
+
+# we never need the user, so we use a
+# generic user for all shelve operations
+shelveuser = 'shelve@localhost'
+
+class shelvedfile(object):
+    """Helper for the file storing a single shelve
+
+    Handles common functions on shelve files (.hg/.patch) using
+    the vfs layer"""
+    def __init__(self, repo, name, filetype=None):
+        self.repo = repo
+        self.name = name
+        self.vfs = vfsmod.vfs(repo.vfs.join(shelvedir))
+        self.backupvfs = vfsmod.vfs(repo.vfs.join(backupdir))
+        self.ui = self.repo.ui
+        if filetype:
+            self.fname = name + '.' + filetype
+        else:
+            self.fname = name
+
+    def exists(self):
+        return self.vfs.exists(self.fname)
+
+    def filename(self):
+        return self.vfs.join(self.fname)
+
+    def backupfilename(self):
+        def gennames(base):
+            yield base
+            base, ext = base.rsplit('.', 1)
+            for i in itertools.count(1):
+                yield '%s-%d.%s' % (base, i, ext)
+
+        name = self.backupvfs.join(self.fname)
+        for n in gennames(name):
+            if not self.backupvfs.exists(n):
+                return n
+
+    def movetobackup(self):
+        if not self.backupvfs.isdir():
+            self.backupvfs.makedir()
+        util.rename(self.filename(), self.backupfilename())
+
+    def stat(self):
+        return self.vfs.stat(self.fname)
+
+    def opener(self, mode='rb'):
+        try:
+            return self.vfs(self.fname, mode)
+        except IOError as err:
+            if err.errno != errno.ENOENT:
+                raise
+            raise error.Abort(_("shelved change '%s' not found") % self.name)
+
+    def applybundle(self, tr):
+        fp = self.opener()
+        try:
+            targetphase = phases.internal
+            if not phases.supportinternal(self.repo):
+                targetphase = phases.secret
+            gen = exchange.readbundle(self.repo.ui, fp, self.fname, self.vfs)
+            pretip = self.repo['tip']
+            bundle2.applybundle(self.repo, gen, tr,
+                                source='unshelve',
+                                url='bundle:' + self.vfs.join(self.fname),
+                                targetphase=targetphase)
+            shelvectx = self.repo['tip']
+            if pretip == shelvectx:
+                shelverev = tr.changes['revduplicates'][-1]
+                shelvectx = self.repo[shelverev]
+            return shelvectx
+        finally:
+            fp.close()
+
+    def bundlerepo(self):
+        path = self.vfs.join(self.fname)
+        return bundlerepo.instance(self.repo.baseui,
+                                   'bundle://%s+%s' % (self.repo.root, path))
+
+    def writebundle(self, bases, node):
+        cgversion = changegroup.safeversion(self.repo)
+        if cgversion == '01':
+            btype = 'HG10BZ'
+            compression = None
+        else:
+            btype = 'HG20'
+            compression = 'BZ'
+
+        repo = self.repo.unfiltered()
+
+        outgoing = discovery.outgoing(repo, missingroots=bases,
+                                      missingheads=[node])
+        cg = changegroup.makechangegroup(repo, outgoing, cgversion, 'shelve')
+
+        bundle2.writebundle(self.ui, cg, self.fname, btype, self.vfs,
+                                compression=compression)
+
+    def writeinfo(self, info):
+        scmutil.simplekeyvaluefile(self.vfs, self.fname).write(info)
+
+    def readinfo(self):
+        return scmutil.simplekeyvaluefile(self.vfs, self.fname).read()
+
+class shelvedstate(object):
+    """Handle persistence during unshelving operations.
+
+    Handles saving and restoring a shelved state. Ensures that different
+    versions of a shelved state are possible and handles them appropriately.
+    """
+    _version = 2
+    _filename = 'shelvedstate'
+    _keep = 'keep'
+    _nokeep = 'nokeep'
+    # colon is essential to differentiate from a real bookmark name
+    _noactivebook = ':no-active-bookmark'
+
+    @classmethod
+    def _verifyandtransform(cls, d):
+        """Some basic shelvestate syntactic verification and transformation"""
+        try:
+            d['originalwctx'] = nodemod.bin(d['originalwctx'])
+            d['pendingctx'] = nodemod.bin(d['pendingctx'])
+            d['parents'] = [nodemod.bin(h)
+                            for h in d['parents'].split(' ')]
+            d['nodestoremove'] = [nodemod.bin(h)
+                                  for h in d['nodestoremove'].split(' ')]
+        except (ValueError, TypeError, KeyError) as err:
+            raise error.CorruptedState(pycompat.bytestr(err))
+
+    @classmethod
+    def _getversion(cls, repo):
+        """Read version information from shelvestate file"""
+        fp = repo.vfs(cls._filename)
+        try:
+            version = int(fp.readline().strip())
+        except ValueError as err:
+            raise error.CorruptedState(pycompat.bytestr(err))
+        finally:
+            fp.close()
+        return version
+
+    @classmethod
+    def _readold(cls, repo):
+        """Read the old position-based version of a shelvestate file"""
+        # Order is important, because old shelvestate file uses it
+        # to detemine values of fields (i.g. name is on the second line,
+        # originalwctx is on the third and so forth). Please do not change.
+        keys = ['version', 'name', 'originalwctx', 'pendingctx', 'parents',
+                'nodestoremove', 'branchtorestore', 'keep', 'activebook']
+        # this is executed only seldomly, so it is not a big deal
+        # that we open this file twice
+        fp = repo.vfs(cls._filename)
+        d = {}
+        try:
+            for key in keys:
+                d[key] = fp.readline().strip()
+        finally:
+            fp.close()
+        return d
+
+    @classmethod
+    def load(cls, repo):
+        version = cls._getversion(repo)
+        if version < cls._version:
+            d = cls._readold(repo)
+        elif version == cls._version:
+            d = scmutil.simplekeyvaluefile(
+                repo.vfs, cls._filename).read(firstlinenonkeyval=True)
+        else:
+            raise error.Abort(_('this version of shelve is incompatible '
+                                'with the version used in this repo'))
+
+        cls._verifyandtransform(d)
+        try:
+            obj = cls()
+            obj.name = d['name']
+            obj.wctx = repo[d['originalwctx']]
+            obj.pendingctx = repo[d['pendingctx']]
+            obj.parents = d['parents']
+            obj.nodestoremove = d['nodestoremove']
+            obj.branchtorestore = d.get('branchtorestore', '')
+            obj.keep = d.get('keep') == cls._keep
+            obj.activebookmark = ''
+            if d.get('activebook', '') != cls._noactivebook:
+                obj.activebookmark = d.get('activebook', '')
+        except (error.RepoLookupError, KeyError) as err:
+            raise error.CorruptedState(pycompat.bytestr(err))
+
+        return obj
+
+    @classmethod
+    def save(cls, repo, name, originalwctx, pendingctx, nodestoremove,
+             branchtorestore, keep=False, activebook=''):
+        info = {
+            "name": name,
+            "originalwctx": nodemod.hex(originalwctx.node()),
+            "pendingctx": nodemod.hex(pendingctx.node()),
+            "parents": ' '.join([nodemod.hex(p)
+                                 for p in repo.dirstate.parents()]),
+            "nodestoremove": ' '.join([nodemod.hex(n)
+                                      for n in nodestoremove]),
+            "branchtorestore": branchtorestore,
+            "keep": cls._keep if keep else cls._nokeep,
+            "activebook": activebook or cls._noactivebook
+        }
+        scmutil.simplekeyvaluefile(
+            repo.vfs, cls._filename).write(info,
+                                           firstline=("%d" % cls._version))
+
+    @classmethod
+    def clear(cls, repo):
+        repo.vfs.unlinkpath(cls._filename, ignoremissing=True)
+
+def cleanupoldbackups(repo):
+    vfs = vfsmod.vfs(repo.vfs.join(backupdir))
+    maxbackups = repo.ui.configint('shelve', 'maxbackups')
+    hgfiles = [f for f in vfs.listdir()
+               if f.endswith('.' + patchextension)]
+    hgfiles = sorted([(vfs.stat(f)[stat.ST_MTIME], f) for f in hgfiles])
+    if maxbackups > 0 and maxbackups < len(hgfiles):
+        bordermtime = hgfiles[-maxbackups][0]
+    else:
+        bordermtime = None
+    for mtime, f in hgfiles[:len(hgfiles) - maxbackups]:
+        if mtime == bordermtime:
+            # keep it, because timestamp can't decide exact order of backups
+            continue
+        base = f[:-(1 + len(patchextension))]
+        for ext in shelvefileextensions:
+            vfs.tryunlink(base + '.' + ext)
+
+def _backupactivebookmark(repo):
+    activebookmark = repo._activebookmark
+    if activebookmark:
+        bookmarks.deactivate(repo)
+    return activebookmark
+
+def _restoreactivebookmark(repo, mark):
+    if mark:
+        bookmarks.activate(repo, mark)
+
+def _aborttransaction(repo, tr):
+    '''Abort current transaction for shelve/unshelve, but keep dirstate
+    '''
+    dirstatebackupname = 'dirstate.shelve'
+    repo.dirstate.savebackup(tr, dirstatebackupname)
+    tr.abort()
+    repo.dirstate.restorebackup(None, dirstatebackupname)
+
+def getshelvename(repo, parent, opts):
+    """Decide on the name this shelve is going to have"""
+    def gennames():
+        yield label
+        for i in itertools.count(1):
+            yield '%s-%02d' % (label, i)
+    name = opts.get('name')
+    label = repo._activebookmark or parent.branch() or 'default'
+    # slashes aren't allowed in filenames, therefore we rename it
+    label = label.replace('/', '_')
+    label = label.replace('\\', '_')
+    # filenames must not start with '.' as it should not be hidden
+    if label.startswith('.'):
+        label = label.replace('.', '_', 1)
+
+    if name:
+        if shelvedfile(repo, name, patchextension).exists():
+            e = _("a shelved change named '%s' already exists") % name
+            raise error.Abort(e)
+
+        # ensure we are not creating a subdirectory or a hidden file
+        if '/' in name or '\\' in name:
+            raise error.Abort(_('shelved change names can not contain slashes'))
+        if name.startswith('.'):
+            raise error.Abort(_("shelved change names can not start with '.'"))
+
+    else:
+        for n in gennames():
+            if not shelvedfile(repo, n, patchextension).exists():
+                name = n
+                break
+
+    return name
+
+def mutableancestors(ctx):
+    """return all mutable ancestors for ctx (included)
+
+    Much faster than the revset ancestors(ctx) & draft()"""
+    seen = {nodemod.nullrev}
+    visit = collections.deque()
+    visit.append(ctx)
+    while visit:
+        ctx = visit.popleft()
+        yield ctx.node()
+        for parent in ctx.parents():
+            rev = parent.rev()
+            if rev not in seen:
+                seen.add(rev)
+                if parent.mutable():
+                    visit.append(parent)
+
+def getcommitfunc(extra, interactive, editor=False):
+    def commitfunc(ui, repo, message, match, opts):
+        hasmq = util.safehasattr(repo, 'mq')
+        if hasmq:
+            saved, repo.mq.checkapplied = repo.mq.checkapplied, False
+
+        targetphase = phases.internal
+        if not phases.supportinternal(repo):
+            targetphase = phases.secret
+        overrides = {('phases', 'new-commit'): targetphase}
+        try:
+            editor_ = False
+            if editor:
+                editor_ = cmdutil.getcommiteditor(editform='shelve.shelve',
+                                                  **pycompat.strkwargs(opts))
+            with repo.ui.configoverride(overrides):
+                return repo.commit(message, shelveuser, opts.get('date'),
+                                   match, editor=editor_, extra=extra)
+        finally:
+            if hasmq:
+                repo.mq.checkapplied = saved
+
+    def interactivecommitfunc(ui, repo, *pats, **opts):
+        opts = pycompat.byteskwargs(opts)
+        match = scmutil.match(repo['.'], pats, {})
+        message = opts['message']
+        return commitfunc(ui, repo, message, match, opts)
+
+    return interactivecommitfunc if interactive else commitfunc
+
+def _nothingtoshelvemessaging(ui, repo, pats, opts):
+    stat = repo.status(match=scmutil.match(repo[None], pats, opts))
+    if stat.deleted:
+        ui.status(_("nothing changed (%d missing files, see "
+                    "'hg status')\n") % len(stat.deleted))
+    else:
+        ui.status(_("nothing changed\n"))
+
+def _shelvecreatedcommit(repo, node, name, match):
+    info = {'node': nodemod.hex(node)}
+    shelvedfile(repo, name, 'shelve').writeinfo(info)
+    bases = list(mutableancestors(repo[node]))
+    shelvedfile(repo, name, 'hg').writebundle(bases, node)
+    with shelvedfile(repo, name, patchextension).opener('wb') as fp:
+        cmdutil.exportfile(repo, [node], fp, opts=mdiff.diffopts(git=True),
+                           match=match)
+
+def _includeunknownfiles(repo, pats, opts, extra):
+    s = repo.status(match=scmutil.match(repo[None], pats, opts),
+                    unknown=True)
+    if s.unknown:
+        extra['shelve_unknown'] = '\0'.join(s.unknown)
+        repo[None].add(s.unknown)
+
+def _finishshelve(repo, tr):
+    if phases.supportinternal(repo):
+        tr.close()
+    else:
+        _aborttransaction(repo, tr)
+
+def createcmd(ui, repo, pats, opts):
+    """subcommand that creates a new shelve"""
+    with repo.wlock():
+        cmdutil.checkunfinished(repo)
+        return _docreatecmd(ui, repo, pats, opts)
+
+def _docreatecmd(ui, repo, pats, opts):
+    wctx = repo[None]
+    parents = wctx.parents()
+    if len(parents) > 1:
+        raise error.Abort(_('cannot shelve while merging'))
+    parent = parents[0]
+    origbranch = wctx.branch()
+
+    if parent.node() != nodemod.nullid:
+        desc = "changes to: %s" % parent.description().split('\n', 1)[0]
+    else:
+        desc = '(changes in empty repository)'
+
+    if not opts.get('message'):
+        opts['message'] = desc
+
+    lock = tr = activebookmark = None
+    try:
+        lock = repo.lock()
+
+        # use an uncommitted transaction to generate the bundle to avoid
+        # pull races. ensure we don't print the abort message to stderr.
+        tr = repo.transaction('shelve', report=lambda x: None)
+
+        interactive = opts.get('interactive', False)
+        includeunknown = (opts.get('unknown', False) and
+                          not opts.get('addremove', False))
+
+        name = getshelvename(repo, parent, opts)
+        activebookmark = _backupactivebookmark(repo)
+        extra = {'internal': 'shelve'}
+        if includeunknown:
+            _includeunknownfiles(repo, pats, opts, extra)
+
+        if _iswctxonnewbranch(repo) and not _isbareshelve(pats, opts):
+            # In non-bare shelve we don't store newly created branch
+            # at bundled commit
+            repo.dirstate.setbranch(repo['.'].branch())
+
+        commitfunc = getcommitfunc(extra, interactive, editor=True)
+        if not interactive:
+            node = cmdutil.commit(ui, repo, commitfunc, pats, opts)
+        else:
+            node = cmdutil.dorecord(ui, repo, commitfunc, None,
+                                    False, cmdutil.recordfilter, *pats,
+                                    **pycompat.strkwargs(opts))
+        if not node:
+            _nothingtoshelvemessaging(ui, repo, pats, opts)
+            return 1
+
+        # Create a matcher so that prefetch doesn't attempt to fetch
+        # the entire repository pointlessly, and as an optimisation
+        # for movedirstate, if needed.
+        match = scmutil.matchfiles(repo, repo[node].files())
+        _shelvecreatedcommit(repo, node, name, match)
+
+        if ui.formatted():
+            desc = stringutil.ellipsis(desc, ui.termwidth())
+        ui.status(_('shelved as %s\n') % name)
+        if opts['keep']:
+            with repo.dirstate.parentchange():
+                scmutil.movedirstate(repo, parent, match)
+        else:
+            hg.update(repo, parent.node())
+        if origbranch != repo['.'].branch() and not _isbareshelve(pats, opts):
+            repo.dirstate.setbranch(origbranch)
+
+        _finishshelve(repo, tr)
+    finally:
+        _restoreactivebookmark(repo, activebookmark)
+        lockmod.release(tr, lock)
+
+def _isbareshelve(pats, opts):
+    return (not pats
+            and not opts.get('interactive', False)
+            and not opts.get('include', False)
+            and not opts.get('exclude', False))
+
+def _iswctxonnewbranch(repo):
+    return repo[None].branch() != repo['.'].branch()
+
+def cleanupcmd(ui, repo):
+    """subcommand that deletes all shelves"""
+
+    with repo.wlock():
+        for (name, _type) in repo.vfs.readdir(shelvedir):
+            suffix = name.rsplit('.', 1)[-1]
+            if suffix in shelvefileextensions:
+                shelvedfile(repo, name).movetobackup()
+            cleanupoldbackups(repo)
+
+def deletecmd(ui, repo, pats):
+    """subcommand that deletes a specific shelve"""
+    if not pats:
+        raise error.Abort(_('no shelved changes specified!'))
+    with repo.wlock():
+        try:
+            for name in pats:
+                for suffix in shelvefileextensions:
+                    shfile = shelvedfile(repo, name, suffix)
+                    # patch file is necessary, as it should
+                    # be present for any kind of shelve,
+                    # but the .hg file is optional as in future we
+                    # will add obsolete shelve with does not create a
+                    # bundle
+                    if shfile.exists() or suffix == patchextension:
+                        shfile.movetobackup()
+            cleanupoldbackups(repo)
+        except OSError as err:
+            if err.errno != errno.ENOENT:
+                raise
+            raise error.Abort(_("shelved change '%s' not found") % name)
+
+def listshelves(repo):
+    """return all shelves in repo as list of (time, filename)"""
+    try:
+        names = repo.vfs.readdir(shelvedir)
+    except OSError as err:
+        if err.errno != errno.ENOENT:
+            raise
+        return []
+    info = []
+    for (name, _type) in names:
+        pfx, sfx = name.rsplit('.', 1)
+        if not pfx or sfx != patchextension:
+            continue
+        st = shelvedfile(repo, name).stat()
+        info.append((st[stat.ST_MTIME], shelvedfile(repo, pfx).filename()))
+    return sorted(info, reverse=True)
+
+def listcmd(ui, repo, pats, opts):
+    """subcommand that displays the list of shelves"""
+    pats = set(pats)
+    width = 80
+    if not ui.plain():
+        width = ui.termwidth()
+    namelabel = 'shelve.newest'
+    ui.pager('shelve')
+    for mtime, name in listshelves(repo):
+        sname = util.split(name)[1]
+        if pats and sname not in pats:
+            continue
+        ui.write(sname, label=namelabel)
+        namelabel = 'shelve.name'
+        if ui.quiet:
+            ui.write('\n')
+            continue
+        ui.write(' ' * (16 - len(sname)))
+        used = 16
+        date = dateutil.makedate(mtime)
+        age = '(%s)' % templatefilters.age(date, abbrev=True)
+        ui.write(age, label='shelve.age')
+        ui.write(' ' * (12 - len(age)))
+        used += 12
+        with open(name + '.' + patchextension, 'rb') as fp:
+            while True:
+                line = fp.readline()
+                if not line:
+                    break
+                if not line.startswith('#'):
+                    desc = line.rstrip()
+                    if ui.formatted():
+                        desc = stringutil.ellipsis(desc, width - used)
+                    ui.write(desc)
+                    break
+            ui.write('\n')
+            if not (opts['patch'] or opts['stat']):
+                continue
+            difflines = fp.readlines()
+            if opts['patch']:
+                for chunk, label in patch.difflabel(iter, difflines):
+                    ui.write(chunk, label=label)
+            if opts['stat']:
+                for chunk, label in patch.diffstatui(difflines, width=width):
+                    ui.write(chunk, label=label)
+
+def patchcmds(ui, repo, pats, opts):
+    """subcommand that displays shelves"""
+    if len(pats) == 0:
+        shelves = listshelves(repo)
+        if not shelves:
+            raise error.Abort(_("there are no shelves to show"))
+        mtime, name = shelves[0]
+        sname = util.split(name)[1]
+        pats = [sname]
+
+    for shelfname in pats:
+        if not shelvedfile(repo, shelfname, patchextension).exists():
+            raise error.Abort(_("cannot find shelf %s") % shelfname)
+
+    listcmd(ui, repo, pats, opts)
+
+def checkparents(repo, state):
+    """check parent while resuming an unshelve"""
+    if state.parents != repo.dirstate.parents():
+        raise error.Abort(_('working directory parents do not match unshelve '
+                           'state'))
+
+def unshelveabort(ui, repo, state, opts):
+    """subcommand that abort an in-progress unshelve"""
+    with repo.lock():
+        try:
+            checkparents(repo, state)
+
+            merge.update(repo, state.pendingctx, branchmerge=False, force=True)
+            if (state.activebookmark
+                    and state.activebookmark in repo._bookmarks):
+                bookmarks.activate(repo, state.activebookmark)
+
+            if repo.vfs.exists('unshelverebasestate'):
+                repo.vfs.rename('unshelverebasestate', 'rebasestate')
+
+                from hgext import rebase
+                rebase.clearstatus(repo)
+
+            mergefiles(ui, repo, state.wctx, state.pendingctx)
+            if not phases.supportinternal(repo):
+                repair.strip(ui, repo, state.nodestoremove, backup=False,
+                             topic='shelve')
+        finally:
+            shelvedstate.clear(repo)
+            ui.warn(_("unshelve of '%s' aborted\n") % state.name)
+
+def mergefiles(ui, repo, wctx, shelvectx):
+    """updates to wctx and merges the changes from shelvectx into the
+    dirstate."""
+    with ui.configoverride({('ui', 'quiet'): True}):
+        hg.update(repo, wctx.node())
+        ui.pushbuffer(True)
+        cmdutil.revert(ui, repo, shelvectx, repo.dirstate.parents())
+        ui.popbuffer()
+
+def restorebranch(ui, repo, branchtorestore):
+    if branchtorestore and branchtorestore != repo.dirstate.branch():
+        repo.dirstate.setbranch(branchtorestore)
+        ui.status(_('marked working directory as branch %s\n')
+                  % branchtorestore)
+
+def unshelvecleanup(ui, repo, name, opts):
+    """remove related files after an unshelve"""
+    if not opts.get('keep'):
+        for filetype in shelvefileextensions:
+            shfile = shelvedfile(repo, name, filetype)
+            if shfile.exists():
+                shfile.movetobackup()
+        cleanupoldbackups(repo)
+
+def unshelvecontinue(ui, repo, state, opts):
+    """subcommand to continue an in-progress unshelve"""
+    # We're finishing off a merge. First parent is our original
+    # parent, second is the temporary "fake" commit we're unshelving.
+    with repo.lock():
+        checkparents(repo, state)
+        ms = merge.mergestate.read(repo)
+        if list(ms.unresolved()):
+            raise error.Abort(
+                _("unresolved conflicts, can't continue"),
+                hint=_("see 'hg resolve', then 'hg unshelve --continue'"))
+
+        shelvectx = repo[state.parents[1]]
+        pendingctx = state.pendingctx
+
+        with repo.dirstate.parentchange():
+            repo.setparents(state.pendingctx.node(), nodemod.nullid)
+            repo.dirstate.write(repo.currenttransaction())
+
+        targetphase = phases.internal
+        if not phases.supportinternal(repo):
+            targetphase = phases.secret
+        overrides = {('phases', 'new-commit'): targetphase}
+        with repo.ui.configoverride(overrides, 'unshelve'):
+            with repo.dirstate.parentchange():
+                repo.setparents(state.parents[0], nodemod.nullid)
+                newnode = repo.commit(text=shelvectx.description(),
+                                      extra=shelvectx.extra(),
+                                      user=shelvectx.user(),
+                                      date=shelvectx.date())
+
+        if newnode is None:
+            # If it ended up being a no-op commit, then the normal
+            # merge state clean-up path doesn't happen, so do it
+            # here. Fix issue5494
+            merge.mergestate.clean(repo)
+            shelvectx = state.pendingctx
+            msg = _('note: unshelved changes already existed '
+                    'in the working copy\n')
+            ui.status(msg)
+        else:
+            # only strip the shelvectx if we produced one
+            state.nodestoremove.append(newnode)
+            shelvectx = repo[newnode]
+
+        hg.updaterepo(repo, pendingctx.node(), overwrite=False)
+
+        if repo.vfs.exists('unshelverebasestate'):
+            repo.vfs.rename('unshelverebasestate', 'rebasestate')
+
+            from hgext import rebase
+            rebase.clearstatus(repo)
+
+        mergefiles(ui, repo, state.wctx, shelvectx)
+        restorebranch(ui, repo, state.branchtorestore)
+
+        if not phases.supportinternal(repo):
+            repair.strip(ui, repo, state.nodestoremove, backup=False,
+                         topic='shelve')
+        _restoreactivebookmark(repo, state.activebookmark)
+        shelvedstate.clear(repo)
+        unshelvecleanup(ui, repo, state.name, opts)
+        ui.status(_("unshelve of '%s' complete\n") % state.name)
+
+def _commitworkingcopychanges(ui, repo, opts, tmpwctx):
+    """Temporarily commit working copy changes before moving unshelve commit"""
+    # Store pending changes in a commit and remember added in case a shelve
+    # contains unknown files that are part of the pending change
+    s = repo.status()
+    addedbefore = frozenset(s.added)
+    if not (s.modified or s.added or s.removed):
+        return tmpwctx, addedbefore
+    ui.status(_("temporarily committing pending changes "
+                "(restore with 'hg unshelve --abort')\n"))
+    extra = {'internal': 'shelve'}
+    commitfunc = getcommitfunc(extra=extra, interactive=False,
+                               editor=False)
+    tempopts = {}
+    tempopts['message'] = "pending changes temporary commit"
+    tempopts['date'] = opts.get('date')
+    with ui.configoverride({('ui', 'quiet'): True}):
+        node = cmdutil.commit(ui, repo, commitfunc, [], tempopts)
+    tmpwctx = repo[node]
+    return tmpwctx, addedbefore
+
+def _unshelverestorecommit(ui, repo, tr, basename):
+    """Recreate commit in the repository during the unshelve"""
+    repo = repo.unfiltered()
+    node = None
+    if shelvedfile(repo, basename, 'shelve').exists():
+        node = shelvedfile(repo, basename, 'shelve').readinfo()['node']
+    if node is None or node not in repo:
+        with ui.configoverride({('ui', 'quiet'): True}):
+            shelvectx = shelvedfile(repo, basename, 'hg').applybundle(tr)
+        # We might not strip the unbundled changeset, so we should keep track of
+        # the unshelve node in case we need to reuse it (eg: unshelve --keep)
+        if node is None:
+            info = {'node': nodemod.hex(shelvectx.node())}
+            shelvedfile(repo, basename, 'shelve').writeinfo(info)
+    else:
+        shelvectx = repo[node]
+
+    return repo, shelvectx
+
+def _rebaserestoredcommit(ui, repo, opts, tr, oldtiprev, basename, pctx,
+                          tmpwctx, shelvectx, branchtorestore,
+                          activebookmark):
+    """Rebase restored commit from its original location to a destination"""
+    # If the shelve is not immediately on top of the commit
+    # we'll be merging with, rebase it to be on top.
+    if tmpwctx.node() == shelvectx.p1().node():
+        return shelvectx
+
+    overrides = {
+        ('ui', 'forcemerge'): opts.get('tool', ''),
+        ('phases', 'new-commit'): phases.secret,
+    }
+    with repo.ui.configoverride(overrides, 'unshelve'):
+        ui.status(_('rebasing shelved changes\n'))
+        stats = merge.graft(repo, shelvectx, shelvectx.p1(),
+                           labels=['shelve', 'working-copy'],
+                           keepconflictparent=True)
+        if stats.unresolvedcount:
+            tr.close()
+
+            nodestoremove = [repo.changelog.node(rev)
+                             for rev in pycompat.xrange(oldtiprev, len(repo))]
+            shelvedstate.save(repo, basename, pctx, tmpwctx, nodestoremove,
+                              branchtorestore, opts.get('keep'), activebookmark)
+            raise error.InterventionRequired(
+                _("unresolved conflicts (see 'hg resolve', then "
+                  "'hg unshelve --continue')"))
+
+        with repo.dirstate.parentchange():
+            repo.setparents(tmpwctx.node(), nodemod.nullid)
+            newnode = repo.commit(text=shelvectx.description(),
+                                  extra=shelvectx.extra(),
+                                  user=shelvectx.user(),
+                                  date=shelvectx.date())
+
+        if newnode is None:
+            # If it ended up being a no-op commit, then the normal
+            # merge state clean-up path doesn't happen, so do it
+            # here. Fix issue5494
+            merge.mergestate.clean(repo)
+            shelvectx = tmpwctx
+            msg = _('note: unshelved changes already existed '
+                    'in the working copy\n')
+            ui.status(msg)
+        else:
+            shelvectx = repo[newnode]
+            hg.updaterepo(repo, tmpwctx.node(), False)
+
+    return shelvectx
+
+def _forgetunknownfiles(repo, shelvectx, addedbefore):
+    # Forget any files that were unknown before the shelve, unknown before
+    # unshelve started, but are now added.
+    shelveunknown = shelvectx.extra().get('shelve_unknown')
+    if not shelveunknown:
+        return
+    shelveunknown = frozenset(shelveunknown.split('\0'))
+    addedafter = frozenset(repo.status().added)
+    toforget = (addedafter & shelveunknown) - addedbefore
+    repo[None].forget(toforget)
+
+def _finishunshelve(repo, oldtiprev, tr, activebookmark):
+    _restoreactivebookmark(repo, activebookmark)
+    # The transaction aborting will strip all the commits for us,
+    # but it doesn't update the inmemory structures, so addchangegroup
+    # hooks still fire and try to operate on the missing commits.
+    # Clean up manually to prevent this.
+    repo.unfiltered().changelog.strip(oldtiprev, tr)
+    _aborttransaction(repo, tr)
+
+def _checkunshelveuntrackedproblems(ui, repo, shelvectx):
+    """Check potential problems which may result from working
+    copy having untracked changes."""
+    wcdeleted = set(repo.status().deleted)
+    shelvetouched = set(shelvectx.files())
+    intersection = wcdeleted.intersection(shelvetouched)
+    if intersection:
+        m = _("shelved change touches missing files")
+        hint = _("run hg status to see which files are missing")
+        raise error.Abort(m, hint=hint)
+
+def _dounshelve(ui, repo, *shelved, **opts):
+    opts = pycompat.byteskwargs(opts)
+    abortf = opts.get('abort')
+    continuef = opts.get('continue')
+    if not abortf and not continuef:
+        cmdutil.checkunfinished(repo)
+    shelved = list(shelved)
+    if opts.get("name"):
+        shelved.append(opts["name"])
+
+    if abortf or continuef:
+        if abortf and continuef:
+            raise error.Abort(_('cannot use both abort and continue'))
+        if shelved:
+            raise error.Abort(_('cannot combine abort/continue with '
+                               'naming a shelved change'))
+        if abortf and opts.get('tool', False):
+            ui.warn(_('tool option will be ignored\n'))
+
+        try:
+            state = shelvedstate.load(repo)
+            if opts.get('keep') is None:
+                opts['keep'] = state.keep
+        except IOError as err:
+            if err.errno != errno.ENOENT:
+                raise
+            cmdutil.wrongtooltocontinue(repo, _('unshelve'))
+        except error.CorruptedState as err:
+            ui.debug(pycompat.bytestr(err) + '\n')
+            if continuef:
+                msg = _('corrupted shelved state file')
+                hint = _('please run hg unshelve --abort to abort unshelve '
+                         'operation')
+                raise error.Abort(msg, hint=hint)
+            elif abortf:
+                msg = _('could not read shelved state file, your working copy '
+                        'may be in an unexpected state\nplease update to some '
+                        'commit\n')
+                ui.warn(msg)
+                shelvedstate.clear(repo)
+            return
+
+        if abortf:
+            return unshelveabort(ui, repo, state, opts)
+        elif continuef:
+            return unshelvecontinue(ui, repo, state, opts)
+    elif len(shelved) > 1:
+        raise error.Abort(_('can only unshelve one change at a time'))
+
+    # abort unshelve while merging (issue5123)
+    parents = repo[None].parents()
+    if len(parents) > 1:
+        raise error.Abort(_('cannot unshelve while merging'))
+
+    elif not shelved:
+        shelved = listshelves(repo)
+        if not shelved:
+            raise error.Abort(_('no shelved changes to apply!'))
+        basename = util.split(shelved[0][1])[1]
+        ui.status(_("unshelving change '%s'\n") % basename)
+    else:
+        basename = shelved[0]
+
+    if not shelvedfile(repo, basename, patchextension).exists():
+        raise error.Abort(_("shelved change '%s' not found") % basename)
+
+    repo = repo.unfiltered()
+    lock = tr = None
+    try:
+        lock = repo.lock()
+        tr = repo.transaction('unshelve', report=lambda x: None)
+        oldtiprev = len(repo)
+
+        pctx = repo['.']
+        tmpwctx = pctx
+        # The goal is to have a commit structure like so:
+        # ...-> pctx -> tmpwctx -> shelvectx
+        # where tmpwctx is an optional commit with the user's pending changes
+        # and shelvectx is the unshelved changes. Then we merge it all down
+        # to the original pctx.
+
+        activebookmark = _backupactivebookmark(repo)
+        tmpwctx, addedbefore = _commitworkingcopychanges(ui, repo, opts,
+                                                         tmpwctx)
+        repo, shelvectx = _unshelverestorecommit(ui, repo, tr, basename)
+        _checkunshelveuntrackedproblems(ui, repo, shelvectx)
+        branchtorestore = ''
+        if shelvectx.branch() != shelvectx.p1().branch():
+            branchtorestore = shelvectx.branch()
+
+        shelvectx = _rebaserestoredcommit(ui, repo, opts, tr, oldtiprev,
+                                          basename, pctx, tmpwctx,
+                                          shelvectx, branchtorestore,
+                                          activebookmark)
+        overrides = {('ui', 'forcemerge'): opts.get('tool', '')}
+        with ui.configoverride(overrides, 'unshelve'):
+            mergefiles(ui, repo, pctx, shelvectx)
+        restorebranch(ui, repo, branchtorestore)
+        _forgetunknownfiles(repo, shelvectx, addedbefore)
+
+        shelvedstate.clear(repo)
+        _finishunshelve(repo, oldtiprev, tr, activebookmark)
+        unshelvecleanup(ui, repo, basename, opts)
+    finally:
+        if tr:
+            tr.release()
+        lockmod.release(lock)
diff --git a/mercurial/configitems.py b/mercurial/configitems.py
--- a/mercurial/configitems.py
+++ b/mercurial/configitems.py
@@ -1082,6 +1082,9 @@ 
 coreconfigitem('share', 'poolnaming',
     default='identity',
 )
+coreconfigitem('shelve','maxbackups',
+    default=10,
+)
 coreconfigitem('smtp', 'host',
     default=None,
 )
diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -58,6 +58,7 @@ 
     rewriteutil,
     scmutil,
     server,
+    shelve as shelvemod,
     state as statemod,
     streamclone,
     tags as tagsmod,
@@ -5307,6 +5308,106 @@ 
     service = server.createservice(ui, repo, opts)
     return server.runservice(opts, initfn=service.init, runfn=service.run)
 
+@command('shelve',
+         [('A', 'addremove', None,
+           _('mark new/missing files as added/removed before shelving')),
+          ('u', 'unknown', None,
+           _('store unknown files in the shelve')),
+          ('', 'cleanup', None,
+           _('delete all shelved changes')),
+          ('', 'date', '',
+           _('shelve with the specified commit date'), _('DATE')),
+          ('d', 'delete', None,
+           _('delete the named shelved change(s)')),
+          ('e', 'edit', False,
+           _('invoke editor on commit messages')),
+          ('k', 'keep', False,
+           _('shelve, but keep changes in the working directory')),
+          ('l', 'list', None,
+           _('list current shelves')),
+          ('m', 'message', '',
+           _('use text as shelve message'), _('TEXT')),
+          ('n', 'name', '',
+           _('use the given name for the shelved commit'), _('NAME')),
+          ('p', 'patch', None,
+           _('output patches for changes (provide the names of the shelved '
+             'changes as positional arguments)')),
+          ('i', 'interactive', None,
+           _('interactive mode, only works while creating a shelve')),
+          ('', 'stat', None,
+           _('output diffstat-style summary of changes (provide the names of '
+             'the shelved changes as positional arguments)')
+           )] + cmdutil.walkopts,
+         _('hg shelve [OPTION]... [FILE]...'),
+         helpcategory=command.CATEGORY_WORKING_DIRECTORY)
+def shelve(ui, repo, *pats, **opts):
+    '''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``.
+    '''
+    opts = pycompat.byteskwargs(opts)
+    allowables = [
+        ('addremove', {'create'}), # 'create' is pseudo action
+        ('unknown', {'create'}),
+        ('cleanup', {'cleanup'}),
+#       ('date', {'create'}), # ignored for passing '--date "0 0"' in tests
+        ('delete', {'delete'}),
+        ('edit', {'create'}),
+        ('keep', {'create'}),
+        ('list', {'list'}),
+        ('message', {'create'}),
+        ('name', {'create'}),
+        ('patch', {'patch', 'list'}),
+        ('stat', {'stat', 'list'}),
+    ]
+    def checkopt(opt):
+        if opts.get(opt):
+            for i, allowable in allowables:
+                if opts[i] and opt not in allowable:
+                    raise error.Abort(_("options '--%s' and '--%s' may not be "
+                                       "used together") % (opt, i))
+            return True
+    if checkopt('cleanup'):
+        if pats:
+            raise error.Abort(_("cannot specify names when using '--cleanup'"))
+        return shelvemod.cleanupcmd(ui, repo)
+    elif checkopt('delete'):
+        return shelvemod.deletecmd(ui, repo, pats)
+    elif checkopt('list'):
+        return shelvemod.listcmd(ui, repo, pats, opts)
+    elif checkopt('patch') or checkopt('stat'):
+        return shelvemod.patchcmds(ui, repo, pats, opts)
+    else:
+        return shelvemod.createcmd(ui, repo, pats, opts)
+
 _NOTTERSE = 'nothing'
 
 @command('status|st',
@@ -6035,6 +6136,59 @@ 
 
     return postincoming(ui, repo, modheads, opts.get(r'update'), None, None)
 
+@command('unshelve',
+         [('a', 'abort', None,
+           _('abort an incomplete unshelve operation')),
+          ('c', 'continue', None,
+           _('continue an incomplete unshelve operation')),
+          ('k', 'keep', None,
+           _('keep shelve after unshelving')),
+          ('n', 'name', '',
+           _('restore shelved change with given name'), _('NAME')),
+          ('t', 'tool', '', _('specify merge tool')),
+          ('', 'date', '',
+           _('set date for temporary commits (DEPRECATED)'), _('DATE'))],
+         _('hg unshelve [[-n] SHELVED]'),
+         helpcategory=command.CATEGORY_WORKING_DIRECTORY)
+def unshelve(ui, repo, *shelved, **opts):
+    """restore a shelved change to the working directory
+
+    This command accepts an optional name of a shelved change to
+    restore. If none is given, the most recent shelved change is used.
+
+    If a shelved change is applied successfully, the bundle that
+    contains the shelved changes is moved to a backup location
+    (.hg/shelve-backup).
+
+    Since you can restore a shelved change on top of an arbitrary
+    commit, it is possible that unshelving will result in a conflict
+    between your changes and the commits you are unshelving onto. If
+    this occurs, you must resolve the conflict, then use
+    ``--continue`` to complete the unshelve operation. (The bundle
+    will not be moved until you successfully complete the unshelve.)
+
+    (Alternatively, you can use ``--abort`` to abandon an unshelve
+    that causes a conflict. This reverts the unshelved changes, and
+    leaves the bundle in place.)
+
+    If bare shelved change (when no files are specified, without interactive,
+    include and exclude option) was done on newly created branch it would
+    restore branch information to the working directory.
+
+    After a successful unshelve, the shelved changes are stored in a
+    backup directory. Only the N most recent backups are kept. N
+    defaults to 10 but can be overridden using the ``shelve.maxbackups``
+    configuration option.
+
+    .. container:: verbose
+
+       Timestamp in seconds is used to decide order of backups. More
+       than ``maxbackups`` backups are kept, if same timestamp
+       prevents from deciding exact order of them, for safety.
+    """
+    with repo.wlock():
+        return shelvemod._dounshelve(ui, repo, *shelved, **opts)
+
 @command('update|up|checkout|co',
     [('C', 'clean', None, _('discard uncommitted changes (no backup)')),
     ('c', 'check', None, _('require clean working directory')),
diff --git a/mercurial/cmdutil.py b/mercurial/cmdutil.py
--- a/mercurial/cmdutil.py
+++ b/mercurial/cmdutil.py
@@ -3296,6 +3296,9 @@ 
 unfinishedstates = [
     ('graftstate', True, False, _('graft in progress'),
      _("use 'hg graft --continue' or 'hg graft --stop' to stop")),
+    ('shelvedstate', False, False,
+     _('unshelve already in progress'),
+     _("use 'hg unshelve --continue' or 'hg unshelve --abort'")),
     ('updatestate', True, False, _('last update was interrupted'),
      _("use 'hg update' to get a consistent checkout"))
     ]
@@ -3333,6 +3336,8 @@ 
 afterresolvedstates = [
     ('graftstate',
      _('hg graft --continue')),
+    ('shelvedstate',
+     _('hg unshelve --continue')),
     ]
 
 def howtocontinue(repo):
diff --git a/hgext/shelve.py b/hgext/shelve.py
deleted file mode 100644
--- a/hgext/shelve.py
+++ /dev/null
@@ -1,1147 +0,0 @@ 
-# shelve.py - save/restore working directory state
-#
-# Copyright 2013 Facebook, Inc.
-#
-# This software may be used and distributed according to the terms of the
-# GNU General Public License version 2 or any later version.
-
-"""save and restore changes to the working directory
-
-The "hg shelve" command saves changes made to the working directory
-and reverts those changes, resetting the working directory to a clean
-state.
-
-Later on, the "hg unshelve" command restores the changes saved by "hg
-shelve". Changes can be restored even after updating to a different
-parent, in which case Mercurial's merge machinery will resolve any
-conflicts if necessary.
-
-You can have more than one shelved change outstanding at a time; each
-shelved change has a distinct name. For details, see the help for "hg
-shelve".
-"""
-from __future__ import absolute_import
-
-import collections
-import errno
-import itertools
-import stat
-
-from mercurial.i18n import _
-from mercurial import (
-    bookmarks,
-    bundle2,
-    bundlerepo,
-    changegroup,
-    cmdutil,
-    discovery,
-    error,
-    exchange,
-    hg,
-    lock as lockmod,
-    mdiff,
-    merge,
-    node as nodemod,
-    patch,
-    phases,
-    pycompat,
-    registrar,
-    repair,
-    scmutil,
-    templatefilters,
-    util,
-    vfs as vfsmod,
-)
-
-from . import (
-    rebase,
-)
-from mercurial.utils import (
-    dateutil,
-    stringutil,
-)
-
-cmdtable = {}
-command = registrar.command(cmdtable)
-# Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
-# extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
-# be specifying the version(s) of Mercurial they are tested with, or
-# leave the attribute unspecified.
-testedwith = 'ships-with-hg-core'
-
-configtable = {}
-configitem = registrar.configitem(configtable)
-
-configitem('shelve', 'maxbackups',
-    default=10,
-)
-
-backupdir = 'shelve-backup'
-shelvedir = 'shelved'
-shelvefileextensions = ['hg', 'patch', 'shelve']
-# universal extension is present in all types of shelves
-patchextension = 'patch'
-
-# we never need the user, so we use a
-# generic user for all shelve operations
-shelveuser = 'shelve@localhost'
-
-class shelvedfile(object):
-    """Helper for the file storing a single shelve
-
-    Handles common functions on shelve files (.hg/.patch) using
-    the vfs layer"""
-    def __init__(self, repo, name, filetype=None):
-        self.repo = repo
-        self.name = name
-        self.vfs = vfsmod.vfs(repo.vfs.join(shelvedir))
-        self.backupvfs = vfsmod.vfs(repo.vfs.join(backupdir))
-        self.ui = self.repo.ui
-        if filetype:
-            self.fname = name + '.' + filetype
-        else:
-            self.fname = name
-
-    def exists(self):
-        return self.vfs.exists(self.fname)
-
-    def filename(self):
-        return self.vfs.join(self.fname)
-
-    def backupfilename(self):
-        def gennames(base):
-            yield base
-            base, ext = base.rsplit('.', 1)
-            for i in itertools.count(1):
-                yield '%s-%d.%s' % (base, i, ext)
-
-        name = self.backupvfs.join(self.fname)
-        for n in gennames(name):
-            if not self.backupvfs.exists(n):
-                return n
-
-    def movetobackup(self):
-        if not self.backupvfs.isdir():
-            self.backupvfs.makedir()
-        util.rename(self.filename(), self.backupfilename())
-
-    def stat(self):
-        return self.vfs.stat(self.fname)
-
-    def opener(self, mode='rb'):
-        try:
-            return self.vfs(self.fname, mode)
-        except IOError as err:
-            if err.errno != errno.ENOENT:
-                raise
-            raise error.Abort(_("shelved change '%s' not found") % self.name)
-
-    def applybundle(self, tr):
-        fp = self.opener()
-        try:
-            targetphase = phases.internal
-            if not phases.supportinternal(self.repo):
-                targetphase = phases.secret
-            gen = exchange.readbundle(self.repo.ui, fp, self.fname, self.vfs)
-            pretip = self.repo['tip']
-            bundle2.applybundle(self.repo, gen, tr,
-                                source='unshelve',
-                                url='bundle:' + self.vfs.join(self.fname),
-                                targetphase=targetphase)
-            shelvectx = self.repo['tip']
-            if pretip == shelvectx:
-                shelverev = tr.changes['revduplicates'][-1]
-                shelvectx = self.repo[shelverev]
-            return shelvectx
-        finally:
-            fp.close()
-
-    def bundlerepo(self):
-        path = self.vfs.join(self.fname)
-        return bundlerepo.instance(self.repo.baseui,
-                                   'bundle://%s+%s' % (self.repo.root, path))
-
-    def writebundle(self, bases, node):
-        cgversion = changegroup.safeversion(self.repo)
-        if cgversion == '01':
-            btype = 'HG10BZ'
-            compression = None
-        else:
-            btype = 'HG20'
-            compression = 'BZ'
-
-        repo = self.repo.unfiltered()
-
-        outgoing = discovery.outgoing(repo, missingroots=bases,
-                                      missingheads=[node])
-        cg = changegroup.makechangegroup(repo, outgoing, cgversion, 'shelve')
-
-        bundle2.writebundle(self.ui, cg, self.fname, btype, self.vfs,
-                                compression=compression)
-
-    def writeinfo(self, info):
-        scmutil.simplekeyvaluefile(self.vfs, self.fname).write(info)
-
-    def readinfo(self):
-        return scmutil.simplekeyvaluefile(self.vfs, self.fname).read()
-
-class shelvedstate(object):
-    """Handle persistence during unshelving operations.
-
-    Handles saving and restoring a shelved state. Ensures that different
-    versions of a shelved state are possible and handles them appropriately.
-    """
-    _version = 2
-    _filename = 'shelvedstate'
-    _keep = 'keep'
-    _nokeep = 'nokeep'
-    # colon is essential to differentiate from a real bookmark name
-    _noactivebook = ':no-active-bookmark'
-
-    @classmethod
-    def _verifyandtransform(cls, d):
-        """Some basic shelvestate syntactic verification and transformation"""
-        try:
-            d['originalwctx'] = nodemod.bin(d['originalwctx'])
-            d['pendingctx'] = nodemod.bin(d['pendingctx'])
-            d['parents'] = [nodemod.bin(h)
-                            for h in d['parents'].split(' ')]
-            d['nodestoremove'] = [nodemod.bin(h)
-                                  for h in d['nodestoremove'].split(' ')]
-        except (ValueError, TypeError, KeyError) as err:
-            raise error.CorruptedState(pycompat.bytestr(err))
-
-    @classmethod
-    def _getversion(cls, repo):
-        """Read version information from shelvestate file"""
-        fp = repo.vfs(cls._filename)
-        try:
-            version = int(fp.readline().strip())
-        except ValueError as err:
-            raise error.CorruptedState(pycompat.bytestr(err))
-        finally:
-            fp.close()
-        return version
-
-    @classmethod
-    def _readold(cls, repo):
-        """Read the old position-based version of a shelvestate file"""
-        # Order is important, because old shelvestate file uses it
-        # to detemine values of fields (i.g. name is on the second line,
-        # originalwctx is on the third and so forth). Please do not change.
-        keys = ['version', 'name', 'originalwctx', 'pendingctx', 'parents',
-                'nodestoremove', 'branchtorestore', 'keep', 'activebook']
-        # this is executed only seldomly, so it is not a big deal
-        # that we open this file twice
-        fp = repo.vfs(cls._filename)
-        d = {}
-        try:
-            for key in keys:
-                d[key] = fp.readline().strip()
-        finally:
-            fp.close()
-        return d
-
-    @classmethod
-    def load(cls, repo):
-        version = cls._getversion(repo)
-        if version < cls._version:
-            d = cls._readold(repo)
-        elif version == cls._version:
-            d = scmutil.simplekeyvaluefile(
-                repo.vfs, cls._filename).read(firstlinenonkeyval=True)
-        else:
-            raise error.Abort(_('this version of shelve is incompatible '
-                                'with the version used in this repo'))
-
-        cls._verifyandtransform(d)
-        try:
-            obj = cls()
-            obj.name = d['name']
-            obj.wctx = repo[d['originalwctx']]
-            obj.pendingctx = repo[d['pendingctx']]
-            obj.parents = d['parents']
-            obj.nodestoremove = d['nodestoremove']
-            obj.branchtorestore = d.get('branchtorestore', '')
-            obj.keep = d.get('keep') == cls._keep
-            obj.activebookmark = ''
-            if d.get('activebook', '') != cls._noactivebook:
-                obj.activebookmark = d.get('activebook', '')
-        except (error.RepoLookupError, KeyError) as err:
-            raise error.CorruptedState(pycompat.bytestr(err))
-
-        return obj
-
-    @classmethod
-    def save(cls, repo, name, originalwctx, pendingctx, nodestoremove,
-             branchtorestore, keep=False, activebook=''):
-        info = {
-            "name": name,
-            "originalwctx": nodemod.hex(originalwctx.node()),
-            "pendingctx": nodemod.hex(pendingctx.node()),
-            "parents": ' '.join([nodemod.hex(p)
-                                 for p in repo.dirstate.parents()]),
-            "nodestoremove": ' '.join([nodemod.hex(n)
-                                      for n in nodestoremove]),
-            "branchtorestore": branchtorestore,
-            "keep": cls._keep if keep else cls._nokeep,
-            "activebook": activebook or cls._noactivebook
-        }
-        scmutil.simplekeyvaluefile(
-            repo.vfs, cls._filename).write(info,
-                                           firstline=("%d" % cls._version))
-
-    @classmethod
-    def clear(cls, repo):
-        repo.vfs.unlinkpath(cls._filename, ignoremissing=True)
-
-def cleanupoldbackups(repo):
-    vfs = vfsmod.vfs(repo.vfs.join(backupdir))
-    maxbackups = repo.ui.configint('shelve', 'maxbackups')
-    hgfiles = [f for f in vfs.listdir()
-               if f.endswith('.' + patchextension)]
-    hgfiles = sorted([(vfs.stat(f)[stat.ST_MTIME], f) for f in hgfiles])
-    if maxbackups > 0 and maxbackups < len(hgfiles):
-        bordermtime = hgfiles[-maxbackups][0]
-    else:
-        bordermtime = None
-    for mtime, f in hgfiles[:len(hgfiles) - maxbackups]:
-        if mtime == bordermtime:
-            # keep it, because timestamp can't decide exact order of backups
-            continue
-        base = f[:-(1 + len(patchextension))]
-        for ext in shelvefileextensions:
-            vfs.tryunlink(base + '.' + ext)
-
-def _backupactivebookmark(repo):
-    activebookmark = repo._activebookmark
-    if activebookmark:
-        bookmarks.deactivate(repo)
-    return activebookmark
-
-def _restoreactivebookmark(repo, mark):
-    if mark:
-        bookmarks.activate(repo, mark)
-
-def _aborttransaction(repo, tr):
-    '''Abort current transaction for shelve/unshelve, but keep dirstate
-    '''
-    dirstatebackupname = 'dirstate.shelve'
-    repo.dirstate.savebackup(tr, dirstatebackupname)
-    tr.abort()
-    repo.dirstate.restorebackup(None, dirstatebackupname)
-
-def getshelvename(repo, parent, opts):
-    """Decide on the name this shelve is going to have"""
-    def gennames():
-        yield label
-        for i in itertools.count(1):
-            yield '%s-%02d' % (label, i)
-    name = opts.get('name')
-    label = repo._activebookmark or parent.branch() or 'default'
-    # slashes aren't allowed in filenames, therefore we rename it
-    label = label.replace('/', '_')
-    label = label.replace('\\', '_')
-    # filenames must not start with '.' as it should not be hidden
-    if label.startswith('.'):
-        label = label.replace('.', '_', 1)
-
-    if name:
-        if shelvedfile(repo, name, patchextension).exists():
-            e = _("a shelved change named '%s' already exists") % name
-            raise error.Abort(e)
-
-        # ensure we are not creating a subdirectory or a hidden file
-        if '/' in name or '\\' in name:
-            raise error.Abort(_('shelved change names can not contain slashes'))
-        if name.startswith('.'):
-            raise error.Abort(_("shelved change names can not start with '.'"))
-
-    else:
-        for n in gennames():
-            if not shelvedfile(repo, n, patchextension).exists():
-                name = n
-                break
-
-    return name
-
-def mutableancestors(ctx):
-    """return all mutable ancestors for ctx (included)
-
-    Much faster than the revset ancestors(ctx) & draft()"""
-    seen = {nodemod.nullrev}
-    visit = collections.deque()
-    visit.append(ctx)
-    while visit:
-        ctx = visit.popleft()
-        yield ctx.node()
-        for parent in ctx.parents():
-            rev = parent.rev()
-            if rev not in seen:
-                seen.add(rev)
-                if parent.mutable():
-                    visit.append(parent)
-
-def getcommitfunc(extra, interactive, editor=False):
-    def commitfunc(ui, repo, message, match, opts):
-        hasmq = util.safehasattr(repo, 'mq')
-        if hasmq:
-            saved, repo.mq.checkapplied = repo.mq.checkapplied, False
-
-        targetphase = phases.internal
-        if not phases.supportinternal(repo):
-            targetphase = phases.secret
-        overrides = {('phases', 'new-commit'): targetphase}
-        try:
-            editor_ = False
-            if editor:
-                editor_ = cmdutil.getcommiteditor(editform='shelve.shelve',
-                                                  **pycompat.strkwargs(opts))
-            with repo.ui.configoverride(overrides):
-                return repo.commit(message, shelveuser, opts.get('date'),
-                                   match, editor=editor_, extra=extra)
-        finally:
-            if hasmq:
-                repo.mq.checkapplied = saved
-
-    def interactivecommitfunc(ui, repo, *pats, **opts):
-        opts = pycompat.byteskwargs(opts)
-        match = scmutil.match(repo['.'], pats, {})
-        message = opts['message']
-        return commitfunc(ui, repo, message, match, opts)
-
-    return interactivecommitfunc if interactive else commitfunc
-
-def _nothingtoshelvemessaging(ui, repo, pats, opts):
-    stat = repo.status(match=scmutil.match(repo[None], pats, opts))
-    if stat.deleted:
-        ui.status(_("nothing changed (%d missing files, see "
-                    "'hg status')\n") % len(stat.deleted))
-    else:
-        ui.status(_("nothing changed\n"))
-
-def _shelvecreatedcommit(repo, node, name, match):
-    info = {'node': nodemod.hex(node)}
-    shelvedfile(repo, name, 'shelve').writeinfo(info)
-    bases = list(mutableancestors(repo[node]))
-    shelvedfile(repo, name, 'hg').writebundle(bases, node)
-    with shelvedfile(repo, name, patchextension).opener('wb') as fp:
-        cmdutil.exportfile(repo, [node], fp, opts=mdiff.diffopts(git=True),
-                           match=match)
-
-def _includeunknownfiles(repo, pats, opts, extra):
-    s = repo.status(match=scmutil.match(repo[None], pats, opts),
-                    unknown=True)
-    if s.unknown:
-        extra['shelve_unknown'] = '\0'.join(s.unknown)
-        repo[None].add(s.unknown)
-
-def _finishshelve(repo, tr):
-    if phases.supportinternal(repo):
-        tr.close()
-    else:
-        _aborttransaction(repo, tr)
-
-def createcmd(ui, repo, pats, opts):
-    """subcommand that creates a new shelve"""
-    with repo.wlock():
-        cmdutil.checkunfinished(repo)
-        return _docreatecmd(ui, repo, pats, opts)
-
-def _docreatecmd(ui, repo, pats, opts):
-    wctx = repo[None]
-    parents = wctx.parents()
-    if len(parents) > 1:
-        raise error.Abort(_('cannot shelve while merging'))
-    parent = parents[0]
-    origbranch = wctx.branch()
-
-    if parent.node() != nodemod.nullid:
-        desc = "changes to: %s" % parent.description().split('\n', 1)[0]
-    else:
-        desc = '(changes in empty repository)'
-
-    if not opts.get('message'):
-        opts['message'] = desc
-
-    lock = tr = activebookmark = None
-    try:
-        lock = repo.lock()
-
-        # use an uncommitted transaction to generate the bundle to avoid
-        # pull races. ensure we don't print the abort message to stderr.
-        tr = repo.transaction('shelve', report=lambda x: None)
-
-        interactive = opts.get('interactive', False)
-        includeunknown = (opts.get('unknown', False) and
-                          not opts.get('addremove', False))
-
-        name = getshelvename(repo, parent, opts)
-        activebookmark = _backupactivebookmark(repo)
-        extra = {'internal': 'shelve'}
-        if includeunknown:
-            _includeunknownfiles(repo, pats, opts, extra)
-
-        if _iswctxonnewbranch(repo) and not _isbareshelve(pats, opts):
-            # In non-bare shelve we don't store newly created branch
-            # at bundled commit
-            repo.dirstate.setbranch(repo['.'].branch())
-
-        commitfunc = getcommitfunc(extra, interactive, editor=True)
-        if not interactive:
-            node = cmdutil.commit(ui, repo, commitfunc, pats, opts)
-        else:
-            node = cmdutil.dorecord(ui, repo, commitfunc, None,
-                                    False, cmdutil.recordfilter, *pats,
-                                    **pycompat.strkwargs(opts))
-        if not node:
-            _nothingtoshelvemessaging(ui, repo, pats, opts)
-            return 1
-
-        # Create a matcher so that prefetch doesn't attempt to fetch
-        # the entire repository pointlessly, and as an optimisation
-        # for movedirstate, if needed.
-        match = scmutil.matchfiles(repo, repo[node].files())
-        _shelvecreatedcommit(repo, node, name, match)
-
-        if ui.formatted():
-            desc = stringutil.ellipsis(desc, ui.termwidth())
-        ui.status(_('shelved as %s\n') % name)
-        if opts['keep']:
-            with repo.dirstate.parentchange():
-                scmutil.movedirstate(repo, parent, match)
-        else:
-            hg.update(repo, parent.node())
-        if origbranch != repo['.'].branch() and not _isbareshelve(pats, opts):
-            repo.dirstate.setbranch(origbranch)
-
-        _finishshelve(repo, tr)
-    finally:
-        _restoreactivebookmark(repo, activebookmark)
-        lockmod.release(tr, lock)
-
-def _isbareshelve(pats, opts):
-    return (not pats
-            and not opts.get('interactive', False)
-            and not opts.get('include', False)
-            and not opts.get('exclude', False))
-
-def _iswctxonnewbranch(repo):
-    return repo[None].branch() != repo['.'].branch()
-
-def cleanupcmd(ui, repo):
-    """subcommand that deletes all shelves"""
-
-    with repo.wlock():
-        for (name, _type) in repo.vfs.readdir(shelvedir):
-            suffix = name.rsplit('.', 1)[-1]
-            if suffix in shelvefileextensions:
-                shelvedfile(repo, name).movetobackup()
-            cleanupoldbackups(repo)
-
-def deletecmd(ui, repo, pats):
-    """subcommand that deletes a specific shelve"""
-    if not pats:
-        raise error.Abort(_('no shelved changes specified!'))
-    with repo.wlock():
-        try:
-            for name in pats:
-                for suffix in shelvefileextensions:
-                    shfile = shelvedfile(repo, name, suffix)
-                    # patch file is necessary, as it should
-                    # be present for any kind of shelve,
-                    # but the .hg file is optional as in future we
-                    # will add obsolete shelve with does not create a
-                    # bundle
-                    if shfile.exists() or suffix == patchextension:
-                        shfile.movetobackup()
-            cleanupoldbackups(repo)
-        except OSError as err:
-            if err.errno != errno.ENOENT:
-                raise
-            raise error.Abort(_("shelved change '%s' not found") % name)
-
-def listshelves(repo):
-    """return all shelves in repo as list of (time, filename)"""
-    try:
-        names = repo.vfs.readdir(shelvedir)
-    except OSError as err:
-        if err.errno != errno.ENOENT:
-            raise
-        return []
-    info = []
-    for (name, _type) in names:
-        pfx, sfx = name.rsplit('.', 1)
-        if not pfx or sfx != patchextension:
-            continue
-        st = shelvedfile(repo, name).stat()
-        info.append((st[stat.ST_MTIME], shelvedfile(repo, pfx).filename()))
-    return sorted(info, reverse=True)
-
-def listcmd(ui, repo, pats, opts):
-    """subcommand that displays the list of shelves"""
-    pats = set(pats)
-    width = 80
-    if not ui.plain():
-        width = ui.termwidth()
-    namelabel = 'shelve.newest'
-    ui.pager('shelve')
-    for mtime, name in listshelves(repo):
-        sname = util.split(name)[1]
-        if pats and sname not in pats:
-            continue
-        ui.write(sname, label=namelabel)
-        namelabel = 'shelve.name'
-        if ui.quiet:
-            ui.write('\n')
-            continue
-        ui.write(' ' * (16 - len(sname)))
-        used = 16
-        date = dateutil.makedate(mtime)
-        age = '(%s)' % templatefilters.age(date, abbrev=True)
-        ui.write(age, label='shelve.age')
-        ui.write(' ' * (12 - len(age)))
-        used += 12
-        with open(name + '.' + patchextension, 'rb') as fp:
-            while True:
-                line = fp.readline()
-                if not line:
-                    break
-                if not line.startswith('#'):
-                    desc = line.rstrip()
-                    if ui.formatted():
-                        desc = stringutil.ellipsis(desc, width - used)
-                    ui.write(desc)
-                    break
-            ui.write('\n')
-            if not (opts['patch'] or opts['stat']):
-                continue
-            difflines = fp.readlines()
-            if opts['patch']:
-                for chunk, label in patch.difflabel(iter, difflines):
-                    ui.write(chunk, label=label)
-            if opts['stat']:
-                for chunk, label in patch.diffstatui(difflines, width=width):
-                    ui.write(chunk, label=label)
-
-def patchcmds(ui, repo, pats, opts):
-    """subcommand that displays shelves"""
-    if len(pats) == 0:
-        shelves = listshelves(repo)
-        if not shelves:
-            raise error.Abort(_("there are no shelves to show"))
-        mtime, name = shelves[0]
-        sname = util.split(name)[1]
-        pats = [sname]
-
-    for shelfname in pats:
-        if not shelvedfile(repo, shelfname, patchextension).exists():
-            raise error.Abort(_("cannot find shelf %s") % shelfname)
-
-    listcmd(ui, repo, pats, opts)
-
-def checkparents(repo, state):
-    """check parent while resuming an unshelve"""
-    if state.parents != repo.dirstate.parents():
-        raise error.Abort(_('working directory parents do not match unshelve '
-                           'state'))
-
-def unshelveabort(ui, repo, state, opts):
-    """subcommand that abort an in-progress unshelve"""
-    with repo.lock():
-        try:
-            checkparents(repo, state)
-
-            merge.update(repo, state.pendingctx, branchmerge=False, force=True)
-            if (state.activebookmark
-                    and state.activebookmark in repo._bookmarks):
-                bookmarks.activate(repo, state.activebookmark)
-
-            if repo.vfs.exists('unshelverebasestate'):
-                repo.vfs.rename('unshelverebasestate', 'rebasestate')
-                rebase.clearstatus(repo)
-
-            mergefiles(ui, repo, state.wctx, state.pendingctx)
-            if not phases.supportinternal(repo):
-                repair.strip(ui, repo, state.nodestoremove, backup=False,
-                             topic='shelve')
-        finally:
-            shelvedstate.clear(repo)
-            ui.warn(_("unshelve of '%s' aborted\n") % state.name)
-
-def mergefiles(ui, repo, wctx, shelvectx):
-    """updates to wctx and merges the changes from shelvectx into the
-    dirstate."""
-    with ui.configoverride({('ui', 'quiet'): True}):
-        hg.update(repo, wctx.node())
-        ui.pushbuffer(True)
-        cmdutil.revert(ui, repo, shelvectx, repo.dirstate.parents())
-        ui.popbuffer()
-
-def restorebranch(ui, repo, branchtorestore):
-    if branchtorestore and branchtorestore != repo.dirstate.branch():
-        repo.dirstate.setbranch(branchtorestore)
-        ui.status(_('marked working directory as branch %s\n')
-                  % branchtorestore)
-
-def unshelvecleanup(ui, repo, name, opts):
-    """remove related files after an unshelve"""
-    if not opts.get('keep'):
-        for filetype in shelvefileextensions:
-            shfile = shelvedfile(repo, name, filetype)
-            if shfile.exists():
-                shfile.movetobackup()
-        cleanupoldbackups(repo)
-
-def unshelvecontinue(ui, repo, state, opts):
-    """subcommand to continue an in-progress unshelve"""
-    # We're finishing off a merge. First parent is our original
-    # parent, second is the temporary "fake" commit we're unshelving.
-    with repo.lock():
-        checkparents(repo, state)
-        ms = merge.mergestate.read(repo)
-        if list(ms.unresolved()):
-            raise error.Abort(
-                _("unresolved conflicts, can't continue"),
-                hint=_("see 'hg resolve', then 'hg unshelve --continue'"))
-
-        shelvectx = repo[state.parents[1]]
-        pendingctx = state.pendingctx
-
-        with repo.dirstate.parentchange():
-            repo.setparents(state.pendingctx.node(), nodemod.nullid)
-            repo.dirstate.write(repo.currenttransaction())
-
-        targetphase = phases.internal
-        if not phases.supportinternal(repo):
-            targetphase = phases.secret
-        overrides = {('phases', 'new-commit'): targetphase}
-        with repo.ui.configoverride(overrides, 'unshelve'):
-            with repo.dirstate.parentchange():
-                repo.setparents(state.parents[0], nodemod.nullid)
-                newnode = repo.commit(text=shelvectx.description(),
-                                      extra=shelvectx.extra(),
-                                      user=shelvectx.user(),
-                                      date=shelvectx.date())
-
-        if newnode is None:
-            # If it ended up being a no-op commit, then the normal
-            # merge state clean-up path doesn't happen, so do it
-            # here. Fix issue5494
-            merge.mergestate.clean(repo)
-            shelvectx = state.pendingctx
-            msg = _('note: unshelved changes already existed '
-                    'in the working copy\n')
-            ui.status(msg)
-        else:
-            # only strip the shelvectx if we produced one
-            state.nodestoremove.append(newnode)
-            shelvectx = repo[newnode]
-
-        hg.updaterepo(repo, pendingctx.node(), overwrite=False)
-
-        if repo.vfs.exists('unshelverebasestate'):
-            repo.vfs.rename('unshelverebasestate', 'rebasestate')
-            rebase.clearstatus(repo)
-
-        mergefiles(ui, repo, state.wctx, shelvectx)
-        restorebranch(ui, repo, state.branchtorestore)
-
-        if not phases.supportinternal(repo):
-            repair.strip(ui, repo, state.nodestoremove, backup=False,
-                         topic='shelve')
-        _restoreactivebookmark(repo, state.activebookmark)
-        shelvedstate.clear(repo)
-        unshelvecleanup(ui, repo, state.name, opts)
-        ui.status(_("unshelve of '%s' complete\n") % state.name)
-
-def _commitworkingcopychanges(ui, repo, opts, tmpwctx):
-    """Temporarily commit working copy changes before moving unshelve commit"""
-    # Store pending changes in a commit and remember added in case a shelve
-    # contains unknown files that are part of the pending change
-    s = repo.status()
-    addedbefore = frozenset(s.added)
-    if not (s.modified or s.added or s.removed):
-        return tmpwctx, addedbefore
-    ui.status(_("temporarily committing pending changes "
-                "(restore with 'hg unshelve --abort')\n"))
-    extra = {'internal': 'shelve'}
-    commitfunc = getcommitfunc(extra=extra, interactive=False,
-                               editor=False)
-    tempopts = {}
-    tempopts['message'] = "pending changes temporary commit"
-    tempopts['date'] = opts.get('date')
-    with ui.configoverride({('ui', 'quiet'): True}):
-        node = cmdutil.commit(ui, repo, commitfunc, [], tempopts)
-    tmpwctx = repo[node]
-    return tmpwctx, addedbefore
-
-def _unshelverestorecommit(ui, repo, tr, basename):
-    """Recreate commit in the repository during the unshelve"""
-    repo = repo.unfiltered()
-    node = None
-    if shelvedfile(repo, basename, 'shelve').exists():
-        node = shelvedfile(repo, basename, 'shelve').readinfo()['node']
-    if node is None or node not in repo:
-        with ui.configoverride({('ui', 'quiet'): True}):
-            shelvectx = shelvedfile(repo, basename, 'hg').applybundle(tr)
-        # We might not strip the unbundled changeset, so we should keep track of
-        # the unshelve node in case we need to reuse it (eg: unshelve --keep)
-        if node is None:
-            info = {'node': nodemod.hex(shelvectx.node())}
-            shelvedfile(repo, basename, 'shelve').writeinfo(info)
-    else:
-        shelvectx = repo[node]
-
-    return repo, shelvectx
-
-def _rebaserestoredcommit(ui, repo, opts, tr, oldtiprev, basename, pctx,
-                          tmpwctx, shelvectx, branchtorestore,
-                          activebookmark):
-    """Rebase restored commit from its original location to a destination"""
-    # If the shelve is not immediately on top of the commit
-    # we'll be merging with, rebase it to be on top.
-    if tmpwctx.node() == shelvectx.p1().node():
-        return shelvectx
-
-    overrides = {
-        ('ui', 'forcemerge'): opts.get('tool', ''),
-        ('phases', 'new-commit'): phases.secret,
-    }
-    with repo.ui.configoverride(overrides, 'unshelve'):
-        ui.status(_('rebasing shelved changes\n'))
-        stats = merge.graft(repo, shelvectx, shelvectx.p1(),
-                           labels=['shelve', 'working-copy'],
-                           keepconflictparent=True)
-        if stats.unresolvedcount:
-            tr.close()
-
-            nodestoremove = [repo.changelog.node(rev)
-                             for rev in pycompat.xrange(oldtiprev, len(repo))]
-            shelvedstate.save(repo, basename, pctx, tmpwctx, nodestoremove,
-                              branchtorestore, opts.get('keep'), activebookmark)
-            raise error.InterventionRequired(
-                _("unresolved conflicts (see 'hg resolve', then "
-                  "'hg unshelve --continue')"))
-
-        with repo.dirstate.parentchange():
-            repo.setparents(tmpwctx.node(), nodemod.nullid)
-            newnode = repo.commit(text=shelvectx.description(),
-                                  extra=shelvectx.extra(),
-                                  user=shelvectx.user(),
-                                  date=shelvectx.date())
-
-        if newnode is None:
-            # If it ended up being a no-op commit, then the normal
-            # merge state clean-up path doesn't happen, so do it
-            # here. Fix issue5494
-            merge.mergestate.clean(repo)
-            shelvectx = tmpwctx
-            msg = _('note: unshelved changes already existed '
-                    'in the working copy\n')
-            ui.status(msg)
-        else:
-            shelvectx = repo[newnode]
-            hg.updaterepo(repo, tmpwctx.node(), False)
-
-    return shelvectx
-
-def _forgetunknownfiles(repo, shelvectx, addedbefore):
-    # Forget any files that were unknown before the shelve, unknown before
-    # unshelve started, but are now added.
-    shelveunknown = shelvectx.extra().get('shelve_unknown')
-    if not shelveunknown:
-        return
-    shelveunknown = frozenset(shelveunknown.split('\0'))
-    addedafter = frozenset(repo.status().added)
-    toforget = (addedafter & shelveunknown) - addedbefore
-    repo[None].forget(toforget)
-
-def _finishunshelve(repo, oldtiprev, tr, activebookmark):
-    _restoreactivebookmark(repo, activebookmark)
-    # The transaction aborting will strip all the commits for us,
-    # but it doesn't update the inmemory structures, so addchangegroup
-    # hooks still fire and try to operate on the missing commits.
-    # Clean up manually to prevent this.
-    repo.unfiltered().changelog.strip(oldtiprev, tr)
-    _aborttransaction(repo, tr)
-
-def _checkunshelveuntrackedproblems(ui, repo, shelvectx):
-    """Check potential problems which may result from working
-    copy having untracked changes."""
-    wcdeleted = set(repo.status().deleted)
-    shelvetouched = set(shelvectx.files())
-    intersection = wcdeleted.intersection(shelvetouched)
-    if intersection:
-        m = _("shelved change touches missing files")
-        hint = _("run hg status to see which files are missing")
-        raise error.Abort(m, hint=hint)
-
-@command('unshelve',
-         [('a', 'abort', None,
-           _('abort an incomplete unshelve operation')),
-          ('c', 'continue', None,
-           _('continue an incomplete unshelve operation')),
-          ('k', 'keep', None,
-           _('keep shelve after unshelving')),
-          ('n', 'name', '',
-           _('restore shelved change with given name'), _('NAME')),
-          ('t', 'tool', '', _('specify merge tool')),
-          ('', 'date', '',
-           _('set date for temporary commits (DEPRECATED)'), _('DATE'))],
-         _('hg unshelve [[-n] SHELVED]'),
-         helpcategory=command.CATEGORY_WORKING_DIRECTORY)
-def unshelve(ui, repo, *shelved, **opts):
-    """restore a shelved change to the working directory
-
-    This command accepts an optional name of a shelved change to
-    restore. If none is given, the most recent shelved change is used.
-
-    If a shelved change is applied successfully, the bundle that
-    contains the shelved changes is moved to a backup location
-    (.hg/shelve-backup).
-
-    Since you can restore a shelved change on top of an arbitrary
-    commit, it is possible that unshelving will result in a conflict
-    between your changes and the commits you are unshelving onto. If
-    this occurs, you must resolve the conflict, then use
-    ``--continue`` to complete the unshelve operation. (The bundle
-    will not be moved until you successfully complete the unshelve.)
-
-    (Alternatively, you can use ``--abort`` to abandon an unshelve
-    that causes a conflict. This reverts the unshelved changes, and
-    leaves the bundle in place.)
-
-    If bare shelved change(when no files are specified, without interactive,
-    include and exclude option) was done on newly created branch it would
-    restore branch information to the working directory.
-
-    After a successful unshelve, the shelved changes are stored in a
-    backup directory. Only the N most recent backups are kept. N
-    defaults to 10 but can be overridden using the ``shelve.maxbackups``
-    configuration option.
-
-    .. container:: verbose
-
-       Timestamp in seconds is used to decide order of backups. More
-       than ``maxbackups`` backups are kept, if same timestamp
-       prevents from deciding exact order of them, for safety.
-    """
-    with repo.wlock():
-        return _dounshelve(ui, repo, *shelved, **opts)
-
-def _dounshelve(ui, repo, *shelved, **opts):
-    opts = pycompat.byteskwargs(opts)
-    abortf = opts.get('abort')
-    continuef = opts.get('continue')
-    if not abortf and not continuef:
-        cmdutil.checkunfinished(repo)
-    shelved = list(shelved)
-    if opts.get("name"):
-        shelved.append(opts["name"])
-
-    if abortf or continuef:
-        if abortf and continuef:
-            raise error.Abort(_('cannot use both abort and continue'))
-        if shelved:
-            raise error.Abort(_('cannot combine abort/continue with '
-                               'naming a shelved change'))
-        if abortf and opts.get('tool', False):
-            ui.warn(_('tool option will be ignored\n'))
-
-        try:
-            state = shelvedstate.load(repo)
-            if opts.get('keep') is None:
-                opts['keep'] = state.keep
-        except IOError as err:
-            if err.errno != errno.ENOENT:
-                raise
-            cmdutil.wrongtooltocontinue(repo, _('unshelve'))
-        except error.CorruptedState as err:
-            ui.debug(pycompat.bytestr(err) + '\n')
-            if continuef:
-                msg = _('corrupted shelved state file')
-                hint = _('please run hg unshelve --abort to abort unshelve '
-                         'operation')
-                raise error.Abort(msg, hint=hint)
-            elif abortf:
-                msg = _('could not read shelved state file, your working copy '
-                        'may be in an unexpected state\nplease update to some '
-                        'commit\n')
-                ui.warn(msg)
-                shelvedstate.clear(repo)
-            return
-
-        if abortf:
-            return unshelveabort(ui, repo, state, opts)
-        elif continuef:
-            return unshelvecontinue(ui, repo, state, opts)
-    elif len(shelved) > 1:
-        raise error.Abort(_('can only unshelve one change at a time'))
-
-    # abort unshelve while merging (issue5123)
-    parents = repo[None].parents()
-    if len(parents) > 1:
-        raise error.Abort(_('cannot unshelve while merging'))
-
-    elif not shelved:
-        shelved = listshelves(repo)
-        if not shelved:
-            raise error.Abort(_('no shelved changes to apply!'))
-        basename = util.split(shelved[0][1])[1]
-        ui.status(_("unshelving change '%s'\n") % basename)
-    else:
-        basename = shelved[0]
-
-    if not shelvedfile(repo, basename, patchextension).exists():
-        raise error.Abort(_("shelved change '%s' not found") % basename)
-
-    repo = repo.unfiltered()
-    lock = tr = None
-    try:
-        lock = repo.lock()
-        tr = repo.transaction('unshelve', report=lambda x: None)
-        oldtiprev = len(repo)
-
-        pctx = repo['.']
-        tmpwctx = pctx
-        # The goal is to have a commit structure like so:
-        # ...-> pctx -> tmpwctx -> shelvectx
-        # where tmpwctx is an optional commit with the user's pending changes
-        # and shelvectx is the unshelved changes. Then we merge it all down
-        # to the original pctx.
-
-        activebookmark = _backupactivebookmark(repo)
-        tmpwctx, addedbefore = _commitworkingcopychanges(ui, repo, opts,
-                                                         tmpwctx)
-        repo, shelvectx = _unshelverestorecommit(ui, repo, tr, basename)
-        _checkunshelveuntrackedproblems(ui, repo, shelvectx)
-        branchtorestore = ''
-        if shelvectx.branch() != shelvectx.p1().branch():
-            branchtorestore = shelvectx.branch()
-
-        shelvectx = _rebaserestoredcommit(ui, repo, opts, tr, oldtiprev,
-                                          basename, pctx, tmpwctx,
-                                          shelvectx, branchtorestore,
-                                          activebookmark)
-        overrides = {('ui', 'forcemerge'): opts.get('tool', '')}
-        with ui.configoverride(overrides, 'unshelve'):
-            mergefiles(ui, repo, pctx, shelvectx)
-        restorebranch(ui, repo, branchtorestore)
-        _forgetunknownfiles(repo, shelvectx, addedbefore)
-
-        shelvedstate.clear(repo)
-        _finishunshelve(repo, oldtiprev, tr, activebookmark)
-        unshelvecleanup(ui, repo, basename, opts)
-    finally:
-        if tr:
-            tr.release()
-        lockmod.release(lock)
-
-@command('shelve',
-         [('A', 'addremove', None,
-           _('mark new/missing files as added/removed before shelving')),
-          ('u', 'unknown', None,
-           _('store unknown files in the shelve')),
-          ('', 'cleanup', None,
-           _('delete all shelved changes')),
-          ('', 'date', '',
-           _('shelve with the specified commit date'), _('DATE')),
-          ('d', 'delete', None,
-           _('delete the named shelved change(s)')),
-          ('e', 'edit', False,
-           _('invoke editor on commit messages')),
-          ('k', 'keep', False,
-           _('shelve, but keep changes in the working directory')),
-          ('l', 'list', None,
-           _('list current shelves')),
-          ('m', 'message', '',
-           _('use text as shelve message'), _('TEXT')),
-          ('n', 'name', '',
-           _('use the given name for the shelved commit'), _('NAME')),
-          ('p', 'patch', None,
-           _('output patches for changes (provide the names of the shelved '
-             'changes as positional arguments)')),
-          ('i', 'interactive', None,
-           _('interactive mode, only works while creating a shelve')),
-          ('', 'stat', None,
-           _('output diffstat-style summary of changes (provide the names of '
-             'the shelved changes as positional arguments)')
-           )] + cmdutil.walkopts,
-         _('hg shelve [OPTION]... [FILE]...'),
-         helpcategory=command.CATEGORY_WORKING_DIRECTORY)
-def shelvecmd(ui, repo, *pats, **opts):
-    '''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``.
-    '''
-    opts = pycompat.byteskwargs(opts)
-    allowables = [
-        ('addremove', {'create'}), # 'create' is pseudo action
-        ('unknown', {'create'}),
-        ('cleanup', {'cleanup'}),
-#       ('date', {'create'}), # ignored for passing '--date "0 0"' in tests
-        ('delete', {'delete'}),
-        ('edit', {'create'}),
-        ('keep', {'create'}),
-        ('list', {'list'}),
-        ('message', {'create'}),
-        ('name', {'create'}),
-        ('patch', {'patch', 'list'}),
-        ('stat', {'stat', 'list'}),
-    ]
-    def checkopt(opt):
-        if opts.get(opt):
-            for i, allowable in allowables:
-                if opts[i] and opt not in allowable:
-                    raise error.Abort(_("options '--%s' and '--%s' may not be "
-                                       "used together") % (opt, i))
-            return True
-    if checkopt('cleanup'):
-        if pats:
-            raise error.Abort(_("cannot specify names when using '--cleanup'"))
-        return cleanupcmd(ui, repo)
-    elif checkopt('delete'):
-        return deletecmd(ui, repo, pats)
-    elif checkopt('list'):
-        return listcmd(ui, repo, pats, opts)
-    elif checkopt('patch') or checkopt('stat'):
-        return patchcmds(ui, repo, pats, opts)
-    else:
-        return createcmd(ui, repo, pats, opts)
-
-def extsetup(ui):
-    cmdutil.unfinishedstates.append(
-        [shelvedstate._filename, False, False,
-         _('unshelve already in progress'),
-         _("use 'hg unshelve --continue' or 'hg unshelve --abort'")])
-    cmdutil.afterresolvedstates.append(
-        [shelvedstate._filename, _('hg unshelve --continue')])
diff --git a/contrib/win32/mercurial.ini b/contrib/win32/mercurial.ini
--- a/contrib/win32/mercurial.ini
+++ b/contrib/win32/mercurial.ini
@@ -64,7 +64,6 @@ 
 ;relink =
 ;schemes =
 ;share =
-;shelve =

 ;transplant =
 ;win32mbcs =
 ;zeroconf =