--- a/doc/hgrc.5.txt
+++ b/doc/hgrc.5.txt
@@ -234,10 +234,9 @@ hooks::
     is in $HG_PARENT2.  If update succeeded, $HG_ERROR=0.  If update
     failed (e.g. because conflicts not resolved), $HG_ERROR=1.
 
-  In earlier releases, the names of hook environment variables did not
-  have a "HG_" prefix.  These unprefixed names are still provided in
-  the environment for backwards compatibility, but their use is
-  deprecated, and they will be removed in a future release.
+  Note: In earlier releases, the names of hook environment variables
+  did not have a "HG_" prefix.  The old unprefixed names are no longer
+  provided in the environment.
 
   The syntax for Python hooks is as follows:
 

--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -797,7 +797,7 @@ def backout(ui, repo, rev, **opts):
               (nice(repo.changelog.tip()), nice(node)))
     if opts['merge'] and op1 != node:
         ui.status(_('merging with changeset %s\n') % nice(op1))
-        update(ui, repo, hex(op1), **opts)
+        doupdate(ui, repo, hex(op1), **opts)
 
 def bundle(ui, repo, fname, dest="default-push", **opts):
     """create a changegroup file
@@ -947,7 +947,7 @@ def clone(ui, source, dest=None, **opts)
     f.close()
 
     if not opts['noupdate']:
-        update(repo.ui, repo)
+        doupdate(repo.ui, repo)
 
     d.close()
 
@@ -1305,10 +1305,11 @@ def debugindexdot(ui, file_):
     r = revlog.revlog(util.opener(os.getcwd(), audit=False), file_, "", 0)
     ui.write("digraph G {\n")
     for i in range(r.count()):
-        e = r.index[i]
-        ui.write("\t%d -> %d\n" % (r.rev(e[4]), i))
-        if e[5] != nullid:
-            ui.write("\t%d -> %d\n" % (r.rev(e[5]), i))
+        node = r.node(i)
+        pp = r.parents(node)
+        ui.write("\t%d -> %d\n" % (r.rev(pp[0]), i))
+        if pp[1] != nullid:
+            ui.write("\t%d -> %d\n" % (r.rev(pp[1]), i))
     ui.write("}\n")
 
 def debugrename(ui, repo, file, rev=None):
@@ -1956,7 +1957,7 @@ def merge(ui, repo, node=None, **opts):
     marked as changed for the next commit and a commit must be
     performed before any further updates are allowed.
     """
-    return update(ui, repo, node=node, merge=True, **opts)
+    return doupdate(ui, repo, node=node, merge=True, **opts)
 
 def outgoing(ui, repo, dest="default-push", **opts):
     """show changesets not found in destination
@@ -2035,7 +2036,7 @@ def postincoming(ui, repo, modheads, opt
         return
     if optupdate:
         if modheads == 1:
-            return update(ui, repo)
+            return doupdate(ui, repo)
         else:
             ui.status(_("not updating, since new heads added\n"))
     if modheads > 1:
@@ -2740,15 +2741,19 @@ def update(ui, repo, node=None, merge=Fa
     there is a linear relationship between the current version and the
     requested version, the result is the requested version.
 
-    Otherwise the result is a merge between the contents of the
-    current working directory and the requested version. Files that
-    changed between either parent are marked as changed for the next
-    commit and a commit must be performed before any further updates
-    are allowed.
+    To merge the working directory with another revision, use the
+    merge command.
 
     By default, update will refuse to run if doing so would require
     merging or discarding local changes.
     """
+    if merge:
+        ui.warn(_('(the -m/--merge option is deprecated; '
+                  'use the merge command instead)\n'))
+    return doupdate(ui, repo, node, merge, clean, force, branch, **opts)
+
+def doupdate(ui, repo, node=None, merge=False, clean=False, force=None,
+             branch=None, **opts):
     if branch:
         br = repo.branchlookup(branch=branch)
         found = []
@@ -3115,7 +3120,7 @@ table = {
     "^update|up|checkout|co":
         (update,
          [('b', 'branch', '', _('checkout the head of a specific branch')),
-          ('m', 'merge', None, _('allow merging of branches')),
+          ('m', 'merge', None, _('allow merging of branches (DEPRECATED)')),
           ('C', 'clean', None, _('overwrite locally modified files')),
           ('f', 'force', None, _('force a merge with outstanding changes'))],
          _('hg update [-b TAG] [-m] [-C] [-f] [REV]')),

--- a/mercurial/httprepo.py
+++ b/mercurial/httprepo.py
@@ -11,6 +11,25 @@ from i18n import gettext as _
 from demandload import *
 demandload(globals(), "hg os urllib urllib2 urlparse zlib util httplib")
 
+class passwordmgr(urllib2.HTTPPasswordMgr):
+    def __init__(self, ui):
+        urllib2.HTTPPasswordMgr.__init__(self)
+        self.ui = ui
+
+    def find_user_password(self, realm, authuri):
+        authinfo = urllib2.HTTPPasswordMgr.find_user_password(
+            self, realm, authuri)
+        if authinfo != (None, None):
+            return authinfo
+
+        self.ui.write(_("http authorization required\n"))
+        self.ui.status(_("realm: %s\n") % realm)
+        user = self.ui.prompt(_("user:"), default=None)
+        passwd = self.ui.getpass()
+
+        self.add_password(realm, authuri, user, passwd)
+        return (user, passwd)
+
 class httprepository(remoterepository):
     def __init__(self, ui, path):
         # fix missing / after hostname
@@ -53,13 +72,21 @@ class httprepository(remoterepository):
         if host and not no_proxy:
             proxy_handler = urllib2.ProxyHandler({"http" : "http://" + host})
 
-        authinfo = None
+        proxyauthinfo = None
         if user and passwd:
             passmgr = urllib2.HTTPPasswordMgrWithDefaultRealm()
             passmgr.add_password(None, host, user, passwd)
-            authinfo = urllib2.ProxyBasicAuthHandler(passmgr)
+            proxyauthinfo = urllib2.ProxyBasicAuthHandler(passmgr)
 
-        opener = urllib2.build_opener(proxy_handler, authinfo)
+        if ui.interactive:
+            passmgr = passwordmgr(ui)
+            opener = urllib2.build_opener(
+                proxy_handler, proxyauthinfo,
+                urllib2.HTTPBasicAuthHandler(passmgr),
+                urllib2.HTTPDigestAuthHandler(passmgr))
+        else:
+            opener = urllib2.build_opener(proxy_handler, proxyauthinfo)
+
         # 1.0 here is the _protocol_ version
         opener.addheaders = [('User-agent', 'mercurial/proto-1.0')]
         urllib2.install_opener(opener)

--- a/mercurial/localrepo.py
+++ b/mercurial/localrepo.py
@@ -136,8 +136,7 @@ class localrepository(object):
 
         def runhook(name, cmd):
             self.ui.note(_("running hook %s: %s\n") % (name, cmd))
-            env = dict([('HG_' + k.upper(), v) for k, v in args.iteritems()] +
-                       [(k.upper(), v) for k, v in args.iteritems()])
+            env = dict([('HG_' + k.upper(), v) for k, v in args.iteritems()])
             r = util.system(cmd, environ=env, cwd=self.root)
             if r:
                 desc, r = util.explain_exit(r)

--- a/mercurial/ui.py
+++ b/mercurial/ui.py
@@ -8,7 +8,7 @@
 import ConfigParser
 from i18n import gettext as _
 from demandload import *
-demandload(globals(), "errno os re smtplib socket sys tempfile util")
+demandload(globals(), "errno getpass os re smtplib socket sys tempfile util")
 
 class ui(object):
     def __init__(self, verbose=False, debug=False, quiet=False,
@@ -224,15 +224,18 @@ class ui(object):
 
     def readline(self):
         return sys.stdin.readline()[:-1]
-    def prompt(self, msg, pat, default="y"):
+    def prompt(self, msg, pat=None, default="y"):
         if not self.interactive: return default
         while 1:
             self.write(msg, " ")
             r = self.readline()
-            if re.match(pat, r):
+            if not pat or re.match(pat, r):
                 return r
             else:
                 self.write(_("unrecognized response\n"))
+    def getpass(self, prompt=None, default=None):
+        if not self.interactive: return default
+        return getpass.getpass(prompt or _('password: '))
     def status(self, *msg):
         if not self.quiet: self.write(*msg)
     def warn(self, *msg):
@@ -268,8 +271,10 @@ class ui(object):
 
     def sendmail(self):
         s = smtplib.SMTP()
-        s.connect(host = self.config('smtp', 'host', 'mail'),
-                  port = int(self.config('smtp', 'port', 25)))
+        mailhost = self.config('smtp', 'host')
+        if not mailhost:
+            raise util.Abort(_('no [smtp]host in hgrc - cannot send mail'))
+        s.connect(host=mailhost, port=int(self.config('smtp', 'port', 25)))
         if self.configbool('smtp', 'tls'):
             s.ehlo()
             s.starttls()

--- a/mercurial/util.py
+++ b/mercurial/util.py
@@ -536,12 +536,16 @@ if os.name == 'nt':
     def os_rcpath():
         '''return default os-specific hgrc search path'''
         path = system_rcpath()
-        path.append(os.path.join(os.path.expanduser('~'), 'mercurial.ini'))
+        path.append(user_rcpath())
         userprofile = os.environ.get('USERPROFILE')
         if userprofile:
             path.append(os.path.join(userprofile, 'mercurial.ini'))
         return path
 
+    def user_rcpath():
+         '''return os-specific hgrc search path to the user dir'''
+         return os.path.join(os.path.expanduser('~'), 'mercurial.ini')
+
     def parse_patch_output(output_line):
         """parses the output produced by patch and returns the file name"""
         pf = output_line[14:]

--- a/mercurial/util_win32.py
+++ b/mercurial/util_win32.py
@@ -16,7 +16,7 @@ import win32api
 from demandload import *
 from i18n import gettext as _
 demandload(globals(), 'errno os pywintypes win32con win32file win32process')
-demandload(globals(), 'cStringIO winerror')
+demandload(globals(), 'cStringIO win32com.shell:shell,shellcon winerror')
 
 class WinError:
     winerror_map = {
@@ -180,9 +180,24 @@ def testpid(pid):
 def system_rcpath_win32():
     '''return default os-specific hgrc search path'''
     proc = win32api.GetCurrentProcess()
-    filename = win32process.GetModuleFileNameEx(proc, 0)
+    try:
+        # This will fail on windows < NT
+        filename = win32process.GetModuleFileNameEx(proc, 0)
+    except:
+        filename = win32api.GetModuleFileName(0)
     return [os.path.join(os.path.dirname(filename), 'mercurial.ini')]
 
+def user_rcpath():
+    '''return os-specific hgrc search path to the user dir'''
+    userdir = os.path.expanduser('~')
+    if userdir == '~':
+        # We are on win < nt: fetch the APPDATA directory location and use
+        # the parent directory as the user home dir.
+        appdir = shell.SHGetPathFromIDList(
+            qshell.SHGetSpecialFolderLocation(0, shellcon.CSIDL_APPDATA))
+        userdir = os.path.dirname(appdir)
+    return os.path.join(userdir, 'mercurial.ini')
+
 class posixfile_nt(object):
     '''file object with posix-like semantics.  on windows, normal
     files can not be deleted or renamed if they are open. must open

--- a/tests/README
+++ b/tests/README
@@ -16,10 +16,10 @@ test-<x>.err.
 There are some tricky points here that you should be aware of when
 writing tests:
 
-- hg commit and hg up -m want user interaction
+- hg commit and hg merge want user interaction
 
   for commit use -m "text"
-  for hg up -m, set HGMERGE to something noninteractive (like true or merge)
+  for hg merge, set HGMERGE to something noninteractive (like true or merge)
 
 - changeset hashes will change based on user and date which make
   things like hg history output change

--- a/tests/test-conflict
+++ b/tests/test-conflict
@@ -10,7 +10,7 @@ hg co 0
 echo "something else" > a
 hg commit -m branch2 -d "1000000 0"
 HGMERGE=merge; export HGMERGE
-hg up -m 1
+hg merge 1
 hg id
 egrep -v ">>>|<<<" a
 hg status

--- a/tests/test-confused-revert
+++ b/tests/test-confused-revert
@@ -28,7 +28,7 @@ hg co -C 0
 echo foo-b > a
 hg commit -m "2b" -d "1000000 0"
 
-HGMERGE=true hg update -m 1
+HGMERGE=true hg merge 1
 
 echo "%%% should show foo-b"
 cat a

--- a/tests/test-excessive-merge
+++ b/tests/test-excessive-merge
@@ -17,12 +17,12 @@ hg co 0
 echo blah > b
 
 hg ci -m "branch b" -d "1000000 0"
-HGMERGE=true hg up -m 1
+HGMERGE=true hg merge 1
 
 hg ci -m "merge b/a -> blah" -d "1000000 0"
 
 hg co 1
-HGMERGE=true hg up -m 2
+HGMERGE=true hg merge 2
 hg ci -m "merge a/b -> blah" -d "1000000 0"
 
 hg log
@@ -43,4 +43,4 @@ echo
 
 hg debugindex .hg/data/a.i
 
-hg verify
\ No newline at end of file
+hg verify

--- a/tests/test-filebranch
+++ b/tests/test-filebranch
@@ -41,7 +41,7 @@ hg debugstate | cut -b 1-16,35-
 
 echo merging
 hg pull ../a
-env HGMERGE=../merge hg update -vm
+env HGMERGE=../merge hg merge -v
 
 echo 2m > foo
 echo 2b > baz

--- a/tests/test-flags
+++ b/tests/test-flags
@@ -27,7 +27,7 @@ hg pull ../test2
 hg heads
 hg history
 
-hg -v co -m
+hg -v merge
 
 ls -l ../test[12]/a > foo
 cut -b 1-10 < foo

--- a/tests/test-hook
+++ b/tests/test-hook
@@ -29,7 +29,7 @@ hg update -C 0
 echo b > b
 hg add b
 hg commit -m b -d '1 0'
-hg update -m 1
+hg merge 1
 hg commit -m merge -d '2 0'
 
 cd ../b

--- a/tests/test-merge1
+++ b/tests/test-merge1
@@ -22,7 +22,7 @@ hg add c
 hg commit -m "commit #2" -d "1000000 0"
 echo This is file b1 > b
 echo %% no merges expected
-env HGMERGE=../merge hg update -m 1
+env HGMERGE=../merge hg merge 1
 cd ..; /bin/rm -rf t
 
 mkdir t
@@ -41,9 +41,9 @@ hg add c
 hg commit -m "commit #2" -d "1000000 0"
 echo This is file b2 > b
 echo %% merge should fail
-env HGMERGE=../merge hg update -m 1
+env HGMERGE=../merge hg merge 1
 echo %% merge of b expected
-env HGMERGE=../merge hg update -f -m 1
+env HGMERGE=../merge hg merge -f 1
 cd ..; /bin/rm -rf t
 echo %%
 
@@ -68,9 +68,9 @@ cat b
 
 echo This is file b22 > b
 echo %% merge fails
-env HGMERGE=../merge hg update -m 2
+env HGMERGE=../merge hg merge 2
 echo %% merge expected!
-env HGMERGE=../merge hg update -f -m 2
+env HGMERGE=../merge hg merge -f 2
 cd ..; /bin/rm -rf t
 
 mkdir t
@@ -90,7 +90,7 @@ hg add c
 hg commit -m "commit #3" -d "1000000 0"
 echo This is file b33 > b
 echo %% merge of b should fail
-env HGMERGE=../merge hg update -m 2
+env HGMERGE=../merge hg merge 2
 echo %% merge of b expected
-env HGMERGE=../merge hg update -f -m 2
+env HGMERGE=../merge hg merge -f 2
 cd ..; /bin/rm -rf t

--- a/tests/test-merge4
+++ b/tests/test-merge4
@@ -11,7 +11,7 @@ hg update 0
 echo This is file c1 > c
 hg add c
 hg commit -m "commit #2" -d "1000000 0"
-hg update -m 1
+hg merge 1
 rm b
 echo This is file c22 > c
 hg commit -m "commit #3" -d "1000000 0"

--- a/tests/test-merge6
+++ b/tests/test-merge6
@@ -33,14 +33,14 @@ hg clone B1 B2
 
 cd A1
 hg pull ../B1
-hg update -m
+hg merge
 hg commit -m "commit test" -d "1000000 0"
 echo bar should remain deleted.
 hg manifest
 
 cd ../B2
 hg pull ../A2
-hg update -m
+hg merge
 hg commit -m "commit test" -d "1000000 0"
 echo bar should remain deleted.
 hg manifest

--- a/tests/test-merge7
+++ b/tests/test-merge7
@@ -35,7 +35,7 @@ hg commit -m "2 -> 2.5" -d "1000000 0"
 
 # now pull and merge from test-a
 hg pull ../test-a
-HGMERGE=merge hg update -m
+HGMERGE=merge hg merge
 # resolve conflict
 cat >test.txt <<"EOF"
 one
@@ -57,7 +57,7 @@ hg commit -m "two -> two-point-one" -d "
 # pull and merge from test-a again
 cd ../test-b
 hg pull ../test-a
-HGMERGE=merge hg update --debug -m
+HGMERGE=merge hg merge --debug
 
 cat test.txt | sed "s% .*%%"
 

--- a/tests/test-merge7.out
+++ b/tests/test-merge7.out
@@ -22,7 +22,7 @@ added 1 changesets with 1 changes to 1 f
 (run 'hg heads' to see heads, 'hg merge' to merge)
 merge: warning: conflicts during merge
 resolving manifests
- force None allow 1 moddirstate True linear False
+ force False allow True moddirstate True linear False
  ancestor 055d847dd401 local 2eded9ab0a5c remote 84cf5750dd20
  test.txt versions differ, resolve
 merging test.txt

--- a/tests/test-push-warn
+++ b/tests/test-push-warn
@@ -23,7 +23,7 @@ hg commit -m "3" -d "1000000 0"
 hg push ../a
 hg pull ../a
 hg push ../a
-hg up -m
+hg merge
 hg commit -m "4" -d "1000000 0"
 hg push ../a
 cd ..
@@ -44,7 +44,7 @@ for i in 0 1; do
     hg ci -m d-$i -d "1000000 0"
 done
 
-HGMERGE=true hg co -m 3
+HGMERGE=true hg merge 3
 hg ci -m c-d -d "1000000 0"
 
 hg push ../c

--- a/tests/test-ro-message
+++ b/tests/test-ro-message
@@ -14,4 +14,4 @@ echo 'stationary' >>b/vehicle
 "$HG" commit -m 'Clarifying the vehicle.'
 "$HG" update -C 1
 chmod a-w b/vehicle
-"$HG" update -m 2 2>&1 | sed 's|^\(.*[ 	]\).*/\([^/]*/[^/]*/[^/]*\)$|\1\2|g'
+"$HG" merge 2 2>&1 | sed 's|^\(.*[ 	]\).*/\([^/]*/[^/]*/[^/]*\)$|\1\2|g'

--- a/tests/test-tags
+++ b/tests/test-tags
@@ -27,7 +27,7 @@ echo 1 > b
 hg add b
 hg commit -m "branch" -d "1000000 0"
 hg id
-hg co -m 1
+hg merge 1
 hg id
 hg status
 

--- a/tests/test-up-local-change
+++ b/tests/test-up-local-change
@@ -29,7 +29,7 @@ hg --debug up
 hg parents
 hg --debug up 0
 hg parents
-hg --debug up -m || echo failed
+hg --debug merge || echo failed
 hg parents
 hg --debug up
 hg parents
@@ -50,8 +50,8 @@ hg -q pull ../r1
 hg status
 hg parents
 hg --debug up || echo failed
-hg --debug up -m || echo failed
-hg --debug up -f -m
+hg --debug merge || echo failed
+hg --debug merge -f
 hg parents
 hg diff | sed -e "s/\(+++ [a-zA-Z0-9_/.-]*\).*/\1/" \
               -e "s/\(--- [a-zA-Z0-9_/.-]*\).*/\1/"

--- a/tests/test-up-local-change.out
+++ b/tests/test-up-local-change.out
@@ -112,7 +112,7 @@ failed
 abort: outstanding uncommitted changes
 failed
 resolving manifests
- force None allow 1 moddirstate True linear False
+ force False allow True moddirstate True linear False
  ancestor a0c8bcbbb45c local 1165e8bd193e remote 4096f2872392
  a versions differ, resolve
  b versions differ, resolve