Release v1.0.3

... since default branch is updated semi-random (implementation defined) from
the last non-branch push.

Fixes mnauw/git-remote-hg#48

.gitignore

@@ -0,0 +1,3 @@
+/build/
+/dist/
+/git_remote_hg.egg-info/

.travis.yml

@@ -1,28 +1,20 @@
-language: python
+dist: xenial
+language: minimal
 
-install:
+cache:
-  - if [ "$HG_VERSION" != "dev" ];
+  directories:
-    then pip install -q Mercurial${HG_VERSION+==$HG_VERSION};
+    - $HOME/.cache/git-remote-hg
-    else pip install -q http://selenic.com/repo/hg/archive/tip.tar.gz;
-    fi
-  - pip install -q dulwich hg-git==0.6.1 || true
-
-before_script:
-  - hg --version || true
-  - pip show hg-git dulwich
 
 script:
-  - make test
+  - ./tools/check-versions hg:$HG_VERSION
 
 matrix:
   include:
-    - env: HG_VERSION=2.9.1
+    - env:
-    - env: HG_VERSION=2.8.2
+    - env: HG_VERSION=@
-    - env: HG_VERSION=2.7.2
+    - env: HG_VERSION=5.0
-    - env: HG_VERSION=3.0
+    - env: HG_VERSION=4.9
-    - env: HG_VERSION=3.5.2
+    - env: HG_VERSION=4.8
-    - env: HG_VERSION=3.6.3
+    - env: HG_VERSION=4.7
-    - env: HG_VERSION=3.7
+    - env: HG_VERSION=4.6
-    - env: HG_VERSION=dev
+    - env: HG_VERSION=4.5
-    - python: 2.7
-    - python: 2.6

Makefile

@@ -3,7 +3,28 @@ prefix := $(HOME)
 bindir := $(prefix)/bin
 mandir := $(prefix)/share/man/man1
 
-all: doc
+all: build doc
+
+build:
+	if [ -n "$$PYTHON" ] && "$$PYTHON" -c 'import mercurial' 2> /dev/null ; then \
+		: Use chosen Python version ; \
+	elif python3 -c 'import mercurial' 2> /dev/null ; then \
+		PYTHON=python3 ; \
+	elif python2 -c 'import mercurial' 2> /dev/null ; then \
+		PYTHON=python2 ; \
+	elif python -c 'import mercurial' 2> /dev/null ; then \
+		PYTHON=python ; \
+	fi ; \
+	if [ -n "$$PYTHON" ] ; then \
+		PYTHON=python ; \
+	fi ; \
+	mkdir -p bin ; \
+	for s in git-remote-hg git-hg-helper ; do \
+		printf "%s\n" "#!/usr/bin/env $$PYTHON" > "bin/$$s" ; \
+		tail -n +2 "./$$s" >> "bin/$$s" ; \
+		chmod 755 "bin/$$s" ; \
+		touch -r "./$$s" "bin/$$s" ; \
+	done
 
 doc: doc/git-remote-hg.1
 
@@ -15,18 +36,22 @@ doc/git-remote-hg.1: doc/git-remote-hg.txt
 
 clean:
 	$(RM) doc/git-remote-hg.1
+	$(RM) -r bin/
 
 D = $(DESTDIR)
 
-install:
+install: build
 	install -d -m 755 $(D)$(bindir)/
-	install -m 755 git-remote-hg $(D)$(bindir)/git-remote-hg
+	install -m 755 bin/git-remote-hg $(D)$(bindir)/git-remote-hg
+	install -m 755 bin/git-hg-helper $(D)$(bindir)/git-hg-helper
 
 install-doc: doc
 	install -d -m 755 $(D)$(mandir)/
 	install -m 644 doc/git-remote-hg.1 $(D)$(mandir)/git-remote-hg.1
 
 pypi:
+	version=`git describe --tags ${REV}` && \
+		sed -i "s/version = .*/version = '$$version'[1:]/" setup.py
 	-rm -rf dist build
 	python setup.py sdist bdist_wheel
 
@@ -36,4 +61,4 @@ pypi-upload:
 pypi-test:
 	twine upload --repository-url https://test.pypi.org/legacy/ dist/*
 
-.PHONY: all test install install-doc clean pypy pypy-upload
+.PHONY: all build test install install-doc clean pypy pypy-upload

README.asciidoc

@@ -13,6 +13,13 @@ wget https://raw.github.com/mnauw/git-remote-hg/master/git-remote-hg -O ~/bin/gi
 chmod +x ~/bin/git-remote-hg
 --------------------------------------
 
+In Windows, you also need to put and an NTFS symbolic link named `python2.exe` somewhere
+on your `$PATH` pointing to your Python 2 executable:
+
+--------------------------------------
+mklink <path to link> <path to python.exe>
+--------------------------------------
+
 That's it :)
 
 Obviously you will need Mercurial installed.
@@ -146,8 +153,6 @@ Limitations of the remote-helpers' framework apply. In particular, these
 commands don't work:
 
 * `git push origin :branch-to-delete`
-* `git push origin old:new` (it will push 'old') (patches available)
-* `git push --dry-run origin branch` (it will push) (patches available)
 
 ****
 Another limitation is that if `git log` reports a rename, this will not survive
@@ -247,9 +252,11 @@ to fully complete the conversion (prior to subsequent pushing).
 Some Mercurial names (of branches, bookmarks, tags) may not be a valid git
 refname. See e.g. `man git-check-ref-format` for a rather involved set of rules.
 Moreover, while a slash `/` is allowed, it is not supported to have both a `parent`
-and `parent/child` branch (though only the latter is allowed). So, pending some
+and `parent/child` branch (though only the latter is allowed). Even though
-"nice" bidirectional encoding (not even e.g. URL encoding is safe actually), it is more
+it is not quite (bidirectionally) safe, a (percentage) URL encoding
-likely that only a few instances (out of a whole Mercurial repo) are
+(with some additional twist) is performed to obtain sane git refnames, at least
+so for most cases.  If some nasty cases still slip through, then likely only
+a few instances (out of a whole Mercurial repo) are
 problematic.  This could be handled by a single-branch clone and/or configuring
 a suitable refspec.  However, it might be more convenient to simply filter out a
 few unimportant pesky cases, which can be done by configuring a regural

git-hg-helper

@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python
 #
 # Copyright (c) 2016 Mark Nauwelaerts
 #
@@ -16,13 +16,66 @@ import logging
 import threading
 
 # thanks go to git-remote-helper for some helper functions
+# likewise so for python2/3 compatibility
 
-def die(msg, *args):
+# generic
-    sys.stderr.write('ERROR: %s\n' % (msg % args))
+class basecompat:
+    @staticmethod
+    def char(c):
+      assert len(c) == 1
+      return c[0]
+
+if sys.version_info[0] == 3:
+    import locale
+    class compat(basecompat):
+        # sigh ... wonderful python3 ... as taken from Mercurial's pycompat
+        @staticmethod
+        def decode_sysarg(arg):
+            if os.name == r'nt':
+                return arg.encode("mbcs", "ignore")
+            else:
+                enc = (
+                    locale.getlocale()[1]
+                    or locale.getdefaultlocale()[1]
+                    or sys.getfilesystemencoding()
+                )
+                return arg.encode(enc, "surrogateescape")
+        # mostly used for straight 'cast' (not real unicode content)
+        @staticmethod
+        def to_b(s, *args):
+            if isinstance(s, str):
+                args = args or ['latin-1']
+                return s.encode(*args)
+            return s
+        stdin = sys.stdin.buffer
+        stdout = sys.stdout.buffer
+        stderr = sys.stderr.buffer
+        getcwd = os.getcwdb
+        getenv = os.getenvb if os.supports_bytes_environ else os.getenv
+else:
+    class compat(basecompat):
+        # life was simple in those days ...
+        @staticmethod
+        def to_b(s, *args):
+            return s
+        decode_sysarg = to_b
+        stdin = sys.stdin
+        stdout = sys.stdout
+        stderr = sys.stderr
+        getcwd = staticmethod(os.getcwd)
+        getenv = staticmethod(os.getenv)
+
+def puts(msg = b''):
+    compat.stdout.write(msg)
+    compat.stdout.write(b'\n')
+
+def die(msg):
+    compat.stderr.write(b'ERROR: %s\n' % compat.to_b(msg, 'utf-8'))
     sys.exit(1)
 
-def warn(msg, *args):
+def warn(msg):
-    sys.stderr.write('WARNING: %s\n' % (msg % args))
+    compat.stderr.write(b'WARNING: %s\n' % compat.to_b(msg, 'utf-8'))
+    compat.stderr.flush()
 
 def info(msg, *args):
     logger.info(msg, *args)
@@ -44,7 +97,7 @@ class GitHgRepo:
     def __init__(self, topdir=None, gitdir=None):
         if gitdir != None:
             self.gitdir = gitdir
-            self.topdir = os.path.join(gitdir, '..') # will have to do
+            self.topdir = os.path.join(gitdir, b'..') # will have to do
         else:
             self.topdir = None
             if not topdir:
@@ -53,7 +106,7 @@ class GitHgRepo:
                     if not os.path.exists('.git'):
                         # now we lost where we are
                         raise Exception('failed to determine topdir')
-                    topdir = '.'
+                    topdir = b'.'
             self.topdir = topdir
             self.gitdir = self.run_cmd(['rev-parse', '--git-dir']).strip()
             if not self.gitdir:
@@ -64,7 +117,7 @@ class GitHgRepo:
         self.hg_repos = {}
 
     def identity(self):
-        return '[%s|%s]' % (os.getcwd(), self.topdir)
+        return b'[%s|%s]' % (compat.getcwd(), self.topdir or b'')
 
     def start_cmd(self, args, **kwargs):
         cmd = ['git'] + args
@@ -82,7 +135,7 @@ class GitHgRepo:
         process = self.start_cmd(args, **kwargs)
         output = process.communicate()[0]
         if check and process.returncode != 0:
-            die('command failed: %s', ' '.join(cmd))
+            die(b'command failed: %s' % b' '.join([compat.to_b(a) for a in cmd]))
         return output
 
     def get_config(self, config, getall=False):
@@ -91,17 +144,17 @@ class GitHgRepo:
         return self.run_cmd(['config', get[getall] , config], stderr=None)
 
     def get_config_bool(self, config, default=False):
-        value = self.get_config(config).rstrip('\n')
+        value = self.get_config(config).rstrip()
-        if value == "true":
+        if value == b"true":
             return True
-        elif value == "false":
+        elif value == b"false":
             return False
         else:
             return default
 
     def get_hg_repo_url(self, remote):
-        url = self.get_config('remote.%s.url' % (remote))
+        url = self.get_config(b'remote.%s.url' % (remote))
-        if url and url[0:4] == 'hg::':
+        if url and url[0:4] == b'hg::':
             url = url[4:].strip()
         else:
             url = None
@@ -129,9 +182,9 @@ class GitHgRepo:
         for r in self.get_hg_repos():
             try:
                 hgpath = remotehg.select_marks_dir(r, self.gitdir, False)
-                m = remotehg.Marks(os.path.join(hgpath, 'marks-hg'), None)
+                m = remotehg.Marks(os.path.join(hgpath, b'marks-hg'), None)
                 mark = m.from_rev(rev)
-                m = GitMarks(os.path.join(hgpath, 'marks-git'))
+                m = GitMarks(os.path.join(hgpath, b'marks-git'))
                 return m.to_rev(mark)
             except:
                 pass
@@ -143,28 +196,28 @@ class GitHgRepo:
             return self.hg_repos
 
         # check any local hg repo to see if rev is in there
-        shared_path = os.path.join(self.gitdir, 'hg')
+        shared_path = os.path.join(self.gitdir, b'hg')
-        hg_path = os.path.join(shared_path, '.hg')
+        hg_path = os.path.join(shared_path, b'.hg')
         if os.path.exists(shared_path):
             repos = os.listdir(shared_path)
             for r in repos:
                 # skip the shared repo
-                if r == '.hg':
+                if r == b'.hg':
                     continue
                 # only dirs
                 if not os.path.isdir(os.path.join(shared_path, r)):
                     continue
-                local_path = os.path.join(shared_path, r, 'clone')
+                local_path = os.path.join(shared_path, r, b'clone')
-                local_hg = os.path.join(local_path, '.hg')
+                local_hg = os.path.join(local_path, b'.hg')
                 if not os.path.exists(local_hg):
                     # could be a local repo without proxy, fetch url
                     local_path = self.get_hg_repo_url(r)
                     if not local_path:
-                        warn('failed to find local hg for remote %s', r)
+                        warn(b'failed to find local hg for remote %s' % (r))
                         continue
                 else:
                     # make sure the shared path is always up-to-date
-                    util.writefile(os.path.join(local_hg, 'sharedpath'),
+                    util.writefile(os.path.join(local_hg, b'sharedpath'),
                         os.path.abspath(hg_path))
                 self.hg_repos[r] = os.path.join(local_path)
 
@@ -176,9 +229,9 @@ class GitHgRepo:
         repos = self.get_hg_repos()
         if r in repos:
             local_path = repos[r]
-            hushui = ui.ui()
+            hushui = ui.ui.load() if hasattr(ui.ui, 'load') else ui.ui()
-            hushui.setconfig('ui', 'interactive', 'off')
+            hushui.setconfig(b'ui', b'interactive', b'off')
-            hushui.fout = open(os.devnull, 'w')
+            hushui.fout = open(os.devnull, 'wb')
             return hg.repository(hushui, local_path)
 
     def find_hg_repo(self, rev):
@@ -201,7 +254,7 @@ class GitHgRepo:
         def __init__(self, repo, files):
             p1, p2, data = repo[None], '0' * 40, ''
             context.memctx.__init__(self, repo, (p1, p2),
-                data, files.keys(), self.getfilectx)
+                data, list(files.keys()), self.getfilectx)
             self.files = files
             self.remotehg = import_sibling('remotehg', 'git-remote-hg')
             self.remotehg.hg_version = hg_version
@@ -215,13 +268,13 @@ class GitHgRepo:
                 is_link, is_exec, rename)
 
     def read(self, relpath, rev=None):
-        rev = rev if rev else ':0'
+        rev = rev if rev else b':0'
-        obj = '%s:%s' % (rev, relpath)
+        obj = b'%s:%s' % (rev, relpath)
         # might complain bitterly to stderr if no subrepos so let's not show that
         return self.run_cmd(['show', obj])
 
     # see also subrepo.state
-    def state(self, remote='origin', rev=None):
+    def state(self, remote=b'origin', rev=None):
         """return a state dict, mapping subrepo paths configured in .hgsub
         to tuple: (source from .hgsub, revision from .hgsubstate, kind
         (key in types dict))
@@ -229,7 +282,7 @@ class GitHgRepo:
 
         # obtain relevant files' content from specified revision
         files = { }
-        for f in ('.hgsub', '.hgsubstate'):
+        for f in (b'.hgsub', b'.hgsubstate'):
             files[f] = self.read(f)
         log('state files for %s in revision %s:\n%s', remote, rev, files)
 
@@ -237,7 +290,7 @@ class GitHgRepo:
         # (rather than duplicating the admittedly simple parsing here)
         repo = self.get_hg_repo(remote)
         if not repo:
-            die('no hg repo for alias %s' % remote)
+            die(b'no hg repo for alias %s' % remote)
         ctx = self.dictmemctx(repo, files)
         # helpers moved around 4.6
         if hasattr(subrepo, 'state'):
@@ -252,21 +305,21 @@ class GitHgRepo:
         resolved = {}
         for s in state:
             src, rev, kind = state[s]
-            if not kind in ('hg', 'git'):
+            if not kind in (b'hg', b'git'):
                 warn('skipping unsupported subrepo type %s' % kind)
                 continue
             if not util.url(src).isabs():
                 parent = self.get_hg_repo_url(remote)
                 if not parent:
-                    die('could not determine repo url of %s' % remote)
+                    die(b'could not determine repo url of %s' % remote)
                 parent = util.url(parent)
-                parent.path = posixpath.join(parent.path or '', src)
+                parent.path = posixpath.join(parent.path or b'', src)
                 parent.path = posixpath.normpath(parent.path)
-                src = str(parent)
+                src = bytes(parent)
             # translate to git view url
-            if kind == 'hg':
+            if kind == b'hg':
-                src = 'hg::' + src
+                src = b'hg::' + src
-            resolved[s] = (src.strip(), rev or '', kind)
+            resolved[s] = (src.strip(), rev or b'', kind)
         log('resolved state %s', resolved)
         return resolved
 
@@ -277,12 +330,15 @@ class SubCommand:
         self.subcommand = subcmdname
         self.githgrepo = githgrepo
         self.argparser = self.argumentparser()
+        # list of str
+        self.args = []
 
     def argumentparser(self):
         return argparse.ArgumentParser()
 
     def get_remote(self, args):
         if len(args):
+            assert isinstance(args[0], bytes)
             return (args[0], args[1:])
         else:
             self.usage('missing argument: <remote-alias>')
@@ -295,7 +351,7 @@ class SubCommand:
 
     def execute(self, args):
         (self.options, self.args) = self.argparser.parse_known_args(args)
-        self.do(self.options, self.args)
+        self.do(self.options, [compat.decode_sysarg(a) for a in self.args])
 
     def usage(self, msg):
         if msg:
@@ -304,6 +360,7 @@ class SubCommand:
             self.argparser.print_usage(sys.stderr)
             sys.exit(2)
 
+    # args: list of bytes
     def do(self, options, args):
         pass
 
@@ -322,7 +379,7 @@ class HgRevCommand(SubCommand):
         if len(args):
             hgrev = self.githgrepo.get_hg_rev(args[0])
             if hgrev:
-                print hgrev
+                puts(hgrev)
 
 
 class GitMarks:
@@ -340,24 +397,24 @@ class GitMarks:
         if not os.path.exists(self.path):
             return
 
-        for l in file(self.path):
+        for l in open(self.path, 'rb'):
-            m, c = l.strip().split(' ', 2)
+            m, c = l.strip().split(b' ', 2)
             m = int(m[1:])
             self.marks[c] = m
             self.rev_marks[m] = c
 
     def store(self):
-        marks = self.rev_marks.keys()
+        marks = list(self.rev_marks.keys())
         marks.sort()
-        with open(self.path, 'w') as f:
+        with open(self.path, 'wb') as f:
             for m in marks:
-                f.write(':%d %s\n' % (m, self.rev_marks[m]))
+                f.write(b':%d %s\n' % (m, self.rev_marks[m]))
 
     def from_rev(self, rev):
         return self.marks[rev]
 
     def to_rev(self, mark):
-        return str(self.rev_marks[mark])
+        return self.rev_marks[mark]
 
 
 class GitRevCommand(SubCommand):
@@ -375,7 +432,7 @@ class GitRevCommand(SubCommand):
             rev = args[0]
             gitcommit = self.githgrepo.get_git_commit(rev)
             if gitcommit:
-                print gitcommit
+                puts(gitcommit)
 
 
 class GcCommand(SubCommand):
@@ -408,7 +465,7 @@ class GcCommand(SubCommand):
 
     def print_commits(self, gm, dest):
         for c in gm.marks.keys():
-            dest.write(c + '\n')
+            dest.write(c + b'\n')
         dest.flush()
         dest.close()
 
@@ -422,27 +479,27 @@ class GcCommand(SubCommand):
             if not remote in hg_repos:
                 self.usage('%s is not a valid hg remote' % (remote))
             hgpath = remotehg.select_marks_dir(remote, self.githgrepo.gitdir, False)
-            print "Loading hg marks ..."
+            puts(b"Loading hg marks ...")
-            hgm = remotehg.Marks(os.path.join(hgpath, 'marks-hg'), None)
+            hgm = remotehg.Marks(os.path.join(hgpath, b'marks-hg'), None)
-            print "Loading git marks ..."
+            puts(b"Loading git marks ...")
-            gm = GitMarks(os.path.join(hgpath, 'marks-git'))
+            gm = GitMarks(os.path.join(hgpath, b'marks-git'))
             repo = hg.repository(ui.ui(), hg_repos[remote]) if options.check_hg else None
             # git-gc may have dropped unreachable commits
             # (in particular due to multiple hg head cases)
             # need to drop those so git-fast-export or git-fast-import does not complain
-            print "Performing garbage collection on git commits ..."
+            puts(b"Performing garbage collection on git commits ...")
             process = self.githgrepo.start_cmd(['cat-file', '--batch-check'], \
                 stdin=subprocess.PIPE)
             thread = threading.Thread(target=self.print_commits, args=(gm, process.stdin))
             thread.start()
             git_marks = set({})
             for l in process.stdout:
-                sp = l.strip().split(' ', 2)
+                sp = l.strip().split(b' ', 2)
                 if sp[1] == 'commit':
                     git_marks.add(gm.from_rev(sp[0]))
             thread.join()
             # reduce down to marks that are common to both
-            print "Computing marks intersection ..."
+            puts(b"Computing marks intersection ...")
             common_marks = set(hgm.rev_marks.keys()).intersection(git_marks)
             hg_rev_marks = {}
             git_rev_marks = {}
@@ -453,7 +510,7 @@ class GcCommand(SubCommand):
                 git_rev_marks[m] = gm.rev_marks[m]
             # common marks will not not include any refs/notes/hg
             # let's not discard those casually, though they are not vital
-            print "Including notes commits ..."
+            puts(b"Including notes commits ...")
             revlist = self.githgrepo.start_cmd(['rev-list', 'refs/notes/hg'])
             for l in revlist.stdout.readlines():
                 c = l.strip()
@@ -465,24 +522,24 @@ class GcCommand(SubCommand):
                 git_rev_marks[hgm.last_note] = gm.rev_marks[hgm.last_note]
             # some status report
             if len(hgm.rev_marks) != len(hg_rev_marks):
-                print "Trimmed hg marks from #%d down to #%d" % (len(hgm.rev_marks), len(hg_rev_marks))
+                puts(b"Trimmed hg marks from #%d down to #%d" % (len(hgm.rev_marks), len(hg_rev_marks)))
             if len(gm.rev_marks) != len(git_rev_marks):
-                print "Trimmed git marks from #%d down to #%d" % (len(gm.rev_marks), len(git_rev_marks))
+                puts(b"Trimmed git marks from #%d down to #%d" % (len(gm.rev_marks), len(git_rev_marks)))
             # marks-hg tips irrelevant nowadays
             # now update and store
             if not options.dry_run:
                 # hg marks
-                print "Writing hg marks ..."
+                puts(b"Writing hg marks ...")
                 hgm.rev_marks = hg_rev_marks
                 hgm.marks = {}
-                for mark, rev in hg_rev_marks.iteritems():
+                for mark, rev in hg_rev_marks.items():
                     hgm.marks[rev] = mark
                 hgm.store()
                 # git marks
-                print "Writing git marks ..."
+                puts(b"Writing git marks ...")
                 gm.rev_marks = git_rev_marks
                 gm.marks = {}
-                for mark, rev in git_rev_marks.iteritems():
+                for mark, rev in git_rev_marks.items():
                     gm.marks[rev] = mark
                 gm.store()
 
@@ -491,9 +548,9 @@ class SubRepoCommand(SubCommand):
 
     def writestate(repo, state):
         """rewrite .hgsubstate in (outer) repo with these subrepo states"""
-        lines = ['%s %s\n' % (state[s][1], s) for s in sorted(state)
+        lines = [b'%s %s\n' % (state[s][1], s) for s in sorted(state)
                                                     if state[s][1] != nullstate[1]]
-        repo.wwrite('.hgsubstate', ''.join(lines), '')
+        repo.wwrite(b'.hgsubstate', b''.join(lines), b'')
 
     def argumentparser(self):
         #usage = '%%(prog)s %s [options] <remote>...' % (self.subcommand)
@@ -630,7 +687,8 @@ class SubRepoCommand(SubCommand):
         if args:
             # all arguments are registered, so should not have leftover
             # could be that main arguments were given to subcommands
-            warn('unparsed arguments: %s' % ' '.join(args))
+            warn(b'unparsed arguments: %s' % b' '.join(args))
+        options.remote = compat.decode_sysarg(options.remote)
         log('running subcmd options %s, args %s', options, args)
         # establish initial operation ctx
         ctx = self.subcontext(self.githgrepo)
@@ -640,10 +698,10 @@ class SubRepoCommand(SubCommand):
         log('running %s with options %s in context %s', \
             options.func, options, ctx)
         subrepos = ctx.repo.state(options.remote)
-        paths = subrepos.keys()
+        paths = list(subrepos.keys())
         selabspaths = None
         if ctx.level == 0 and hasattr(options, 'paths') and options.paths:
-            selabspaths = [ os.path.abspath(p) for p in options.paths ]
+            selabspaths = [ os.path.abspath(compat.decode_sysarg(p)) for p in options.paths ]
         log('level %s selected paths %s', ctx.level, selabspaths)
         for p in paths:
             # prep context
@@ -662,17 +720,17 @@ class SubRepoCommand(SubCommand):
             if not ctx.subrepo:
                 ctx.subrepo = self.git_hg_repo_try(ctx.subpath)
             # prep recursion (only into git-hg subrepos)
-            if ctx.subrepo and options.recursive and ctx.state[2] == 'hg':
+            if ctx.subrepo and options.recursive and ctx.state[2] == b'hg':
                 newctx = self.subcontext(ctx.subrepo)
                 newctx.level = ctx.level + 1
                 self.do_operation(options, args, newctx)
 
     def get_git_commit(self, ctx):
         src, rev, kind = ctx.state
-        if kind == 'hg':
+        if kind == b'hg':
             gitcommit = ctx.subrepo.get_git_commit(rev)
             if not gitcommit:
-                die('could not determine git commit for %s; a fetch may update notes' % rev)
+                die(b'could not determine git commit for %s; a fetch may update notes' % rev)
         else:
             gitcommit = rev
         return gitcommit
@@ -681,28 +739,28 @@ class SubRepoCommand(SubCommand):
         if not ctx.subrepo:
             return
         src, orig, kind = ctx.state
-        gitcommit = ctx.subrepo.rev_parse('HEAD')
+        gitcommit = ctx.subrepo.rev_parse(b'HEAD')
         if not gitcommit:
-            die('could not determine current HEAD state in %s' % ctx.subrepo.topdir)
+            die(b'could not determine current HEAD state in %s' % ctx.subrepo.topdir)
         rev = gitcommit
-        if kind == 'hg':
+        if kind == b'hg':
             rev = ctx.subrepo.get_hg_rev(gitcommit)
             if not rev:
-                die('could not determine hg changeset for commit %s' % gitcommit)
+                die(b'could not determine hg changeset for commit %s' % gitcommit)
         else:
             rev = gitcommit
         # obtain state from index
-        state_path = os.path.join(ctx.repo.topdir, '.hgsubstate')
+        state_path = os.path.join(ctx.repo.topdir, b'.hgsubstate')
         # should have this, since we have subrepo (state) in the first place ...
         if not os.path.exists(state_path):
-            die('no .hgsubstate found in repo %s' % ctx.repo.topdir)
+            die(b'no .hgsubstate found in repo %s' % ctx.repo.topdir)
         if orig != rev:
             short = ctx.subrepo.rev_parse(['--short', gitcommit])
-            print "Updating %s to %s [git %s]" % (ctx.subpath, rev, short)
+            puts(b"Updating %s to %s [git %s]" % (ctx.subpath, rev, short))
             # replace and update index
-            with open(state_path, 'r') as f:
+            with open(state_path, 'rb') as f:
                 state = f.read()
-            state = re.sub('.{40} %s' % (ctx.relpath), '%s %s' % (rev, ctx.relpath), state)
+            state = re.sub(b'.{40} %s' % (ctx.relpath), b'%s %s' % (rev, ctx.relpath), state)
             with open(state_path, 'wb') as f:
                 f.write(state)
 
@@ -710,7 +768,7 @@ class SubRepoCommand(SubCommand):
         if not ctx.subrepo:
             return
         if not options.quiet:
-            print 'Entering %s' % ctx.subpath
+            puts(b'Entering %s' % ctx.subpath)
             sys.stdout.flush()
         newenv = os.environ.copy()
         newenv['path'] = ctx.relpath
@@ -721,7 +779,7 @@ class SubRepoCommand(SubCommand):
         proc = subprocess.Popen(options.command, shell=True, cwd=ctx.subpath, env=newenv)
         proc.wait()
         if proc.returncode != 0:
-            die('stopping at %s; script returned non-zero status' % ctx.subpath)
+            die(b'stopping at %s; script returned non-zero status' % ctx.subpath)
 
     def cmd_update(self, options, args, ctx):
         if not ctx.subrepo:
@@ -729,7 +787,7 @@ class SubRepoCommand(SubCommand):
             self.run_cmd(options, ctx.repo, ['clone', src, ctx.subpath], cwd=None)
             ctx.subrepo = self.git_hg_repo_try(ctx.subpath)
             if not ctx.subrepo:
-                die('subrepo %s setup clone failed', ctx.subpath)
+                die(b'subrepo %s setup clone failed' % ctx.subpath)
             # force (detached) checkout of target commit following clone
             cmd = [ 'checkout', '-q' ]
         else:
@@ -757,32 +815,32 @@ class SubRepoCommand(SubCommand):
 
     def cmd_status(self, options, args, ctx):
         if not ctx.subrepo:
-            state = '-'
+            state = b'-'
-            revname = ''
+            revname = b''
             _, gitcommit, kind = ctx.state
-            if kind != 'git':
+            if kind != b'git':
-                gitcommit += '[hg] '
+                gitcommit += b'[hg] '
         else:
             gitcommit = self.get_git_commit(ctx)
-            head = ctx.subrepo.rev_parse('HEAD')
+            head = ctx.subrepo.rev_parse(b'HEAD')
             if head == gitcommit:
-                state = ' '
+                state = b' '
             else:
-                state = '+'
+                state = b'+'
                 # option determines what to print
                 if not options.cached:
                     gitcommit = head
             revname = ctx.subrepo.rev_describe(gitcommit)
             if revname:
-                revname = ' (%s)' % revname
+                revname = b' (%s)' % revname
-        print "%s%s %s%s" % (state, gitcommit, ctx.subpath, revname)
+        puts(b"%s%s %s%s" % (state, gitcommit, ctx.subpath, revname))
 
     def cmd_sync(self, options, args, ctx):
         if not ctx.subrepo:
             return
         src, _, _ = ctx.state
         self.run_cmd(options, ctx.subrepo, \
-            ['config', 'remote.%s.url' % (options.remote), src])
+            ['config', b'remote.%s.url' % (options.remote), src])
 
 
 class RepoCommand(SubCommand):
@@ -801,7 +859,7 @@ class RepoCommand(SubCommand):
         (remote, args) = self.get_remote(args)
         repos = self.githgrepo.get_hg_repos()
         if remote in repos:
-            print repos[remote].rstrip('/')
+            puts(repos[remote].rstrip(b'/'))
 
 
 class HgCommand(SubCommand):
@@ -821,8 +879,8 @@ class HgCommand(SubCommand):
         remote = self.subcommand
         repos = self.githgrepo.get_hg_repos()
         if len(args) and remote in repos:
-            if args[0].find('hg') < 0:
+            if args[0].find(b'hg') < 0:
-                args.insert(0, 'hg')
+                args.insert(0, b'hg')
             args[1:1] = ['-R', repos[remote]]
             p = subprocess.Popen(args, stdout=None)
             p.wait()
@@ -847,12 +905,12 @@ class HelpCommand(SubCommand):
 
 def get_subcommands():
     commands = {
-        'hg-rev': HgRevCommand,
+        b'hg-rev': HgRevCommand,
-        'git-rev': GitRevCommand,
+        b'git-rev': GitRevCommand,
-        'repo': RepoCommand,
+        b'repo': RepoCommand,
-        'gc':  GcCommand,
+        b'gc':  GcCommand,
-        'sub': SubRepoCommand,
+        b'sub': SubRepoCommand,
-        'help' : HelpCommand
+        b'help' : HelpCommand
     }
     # add remote named subcommands
     repos = githgrepo.get_hg_repos()
@@ -885,11 +943,12 @@ def do_usage():
 
     Available hg remotes:
     """)
+    usage = compat.to_b(usage)
     for r in githgrepo.get_hg_repos():
-        usage += '\t%s\n' % (r)
+        usage += b'\t%s\n' % (r)
-    usage += '\n'
+    usage += b'\n'
-    sys.stderr.write(usage)
+    compat.stderr.write(usage)
-    sys.stderr.flush()
+    compat.stderr.flush()
     sys.exit(2)
 
 def init_git(gitdir=None):
@@ -897,7 +956,7 @@ def init_git(gitdir=None):
 
     try:
         githgrepo = GitHgRepo(gitdir=gitdir)
-    except Exception, e:
+    except Exception as e:
         die(str(e))
 
 def init_logger():
@@ -916,8 +975,8 @@ def init_version():
     global hg_version
 
     try:
-        version, _, extra = util.version().partition('+')
+        version, _, extra = util.version().partition(b'+')
-        version = list(int(e) for e in version.split('.'))
+        version = list(int(e) for e in version.split(b'.'))
         if extra:
             version[-1] += 1
         hg_version = tuple(version)
@@ -933,19 +992,21 @@ def main(argv):
     global subcommands
 
     # as an alias, cwd is top dir, change again to original directory
-    reldir = os.environ.get('GIT_PREFIX')
+    reldir = compat.getenv(b'GIT_PREFIX', None)
     if reldir:
         os.chdir(reldir)
 
     # init repo dir
     # we will take over dir management ...
-    init_git(os.environ.pop('GIT_DIR', None))
+    gitdir = compat.getenv(b'GIT_DIR', None)
+    os.environ.pop('GIT_DIR', None)
+    init_git(gitdir)
 
     subcommands = get_subcommands()
 
     cmd = ''
     if len(argv) > 1:
-        cmd = argv[1]
+        cmd = compat.decode_sysarg(argv[1])
     argv = argv[2:]
     if cmd in subcommands:
         c = subcommands[cmd]

setup.py

@@ -1,19 +1,9 @@
 # git-remote-hg setuptools script
 
 import setuptools
-import subprocess
-import sys
-import os
 
-# derive version from git repo
-cmd = ["git", "describe", "--tags"]
-commit = os.environ.get('REV', None)
-if commit:
-  cmd.append(commit)
-process = subprocess.Popen(cmd, stdout=subprocess.PIPE)
-version = process.communicate()[0].strip()
 # strip leading v
-version = version[1:]
+version = 'v1.0.3'[1:]
 
 # check for released version
 assert (len(version) > 0)
@@ -32,6 +22,8 @@ CLASSIFIERS = [
     "Programming Language :: Python",
     "Programming Language :: Python :: 2",
     "Programming Language :: Python :: 2.7",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.6",
     "License :: OSI Approved",
     "License :: OSI Approved :: GNU General Public License v2 (GPLv2)",
     "Development Status :: 5 - Production/Stable",

test/bidi.t

@@ -13,13 +13,7 @@ test -n "$TEST_DIRECTORY" || TEST_DIRECTORY=$(dirname $0)/
 
 if ! test_have_prereq PYTHON
 then
-	skip_all='skipping remote-hg tests; python not available'
+	skip_all='skipping remote-hg tests; python with mercurial not available'
-	test_done
-fi
-
-if ! python2 -c 'import mercurial' > /dev/null 2>&1
-then
-	skip_all='skipping remote-hg tests; mercurial not available'
 	test_done
 fi
 
@@ -243,4 +237,42 @@ test_expect_success 'hg tags' '
 	test_cmp expected actual
 '
 
+test_expect_success 'test timezones' '
+	test_when_finished "rm -rf gitrepo* hgrepo*" &&
+
+	(
+	git init -q gitrepo &&
+	cd gitrepo &&
+
+	echo alpha > alpha &&
+	git add alpha &&
+	git commit -m "add alpha" --date="2007-01-01 00:00:00 +0000" &&
+
+	echo beta > beta &&
+	git add beta &&
+	git commit -m "add beta" --date="2007-01-01 00:00:00 +0100" &&
+
+	echo gamma > gamma &&
+	git add gamma &&
+	git commit -m "add gamma" --date="2007-01-01 00:00:00 -0100" &&
+
+	echo delta > delta &&
+	git add delta &&
+	git commit -m "add delta" --date="2007-01-01 00:00:00 +0130" &&
+
+	echo epsilon > epsilon &&
+	git add epsilon &&
+	git commit -m "add epsilon" --date="2007-01-01 00:00:00 -0130"
+	) &&
+
+	hg_clone gitrepo hgrepo &&
+	git_clone hgrepo gitrepo2 &&
+	hg_clone gitrepo2 hgrepo2 &&
+
+	hg_log hgrepo > expected &&
+	hg_log hgrepo2 > actual &&
+
+	test_cmp expected actual
+'
+
 test_done

test/helper.t

@@ -13,13 +13,7 @@ test -n "$TEST_DIRECTORY" || TEST_DIRECTORY=$(dirname $0)/
 
 if ! test_have_prereq PYTHON
 then
-	skip_all='skipping remote-hg tests; python not available'
+	skip_all='skipping remote-hg tests; python with mercurial not available'
-	test_done
-fi
-
-if ! python2 -c 'import mercurial' > /dev/null 2>&1
-then
-	skip_all='skipping remote-hg tests; mercurial not available'
 	test_done
 fi
 
@@ -521,8 +515,8 @@ test_expect_success 'subcommand sub status' '
 
 	(
 	cd gitrepo &&
-	git-hg-helper sub update sub_hg_a --force &&
+	git-hg-helper sub update --force sub_hg_a  &&
-	git-hg-helper sub update sub_git --force &&
+	git-hg-helper sub update --force sub_git &&
 		(
 		# advance and add a tag to the git repo
 		cd sub_git &&
@@ -544,4 +538,4 @@ test_expect_success 'subcommand sub status' '
 	)
 '
 
-test_done
+test_done

test/hg-git.t

@@ -13,20 +13,14 @@ test -n "$TEST_DIRECTORY" || TEST_DIRECTORY=$(dirname $0)/
 
 if ! test_have_prereq PYTHON
 then
-	skip_all='skipping remote-hg tests; python not available'
+	skip_all='skipping remote-hg tests; python with mercurial not available'
 	test_done
 fi
 
-if ! python2 -c 'import mercurial' > /dev/null 2>&1
+if "$PYTHON" -c 'import hggit' > /dev/null 2>&1
-then
-	skip_all='skipping remote-hg tests; mercurial not available'
-	test_done
-fi
-
-if python2 -c 'import hggit' > /dev/null 2>&1
 then
 	hggit=hggit
-elif python2 -c 'import hgext.git' > /dev/null 2>&1
+elif "$PYTHON" -c 'import hgext.git' > /dev/null 2>&1
 then
 	hggit=hgext.git
 else
@@ -34,15 +28,6 @@ else
 	test_done
 fi
 
-hg_version=$(python2 -c 'from mercurial import util; print util.version()')
-
-case $hg_version in
-3.0*+*)
-	skip_all='skipping remote-hg tests; unsuported version of hg by hg-git'
-	test_done
-	;;
-esac
-
 # clone to a git repo with git
 git_clone_git () {
 	git clone -q "hg::$1" $2 &&
@@ -117,10 +102,13 @@ setup () {
 	[extensions]
 	$hggit =
 	graphlog =
+	[git]
+	debugextrainmessage = 1
 	EOF
 	git config --global receive.denycurrentbranch warn
 	git config --global remote-hg.hg-git-compat true
 	git config --global remote-hg.track-branches false
+	git config --global remote-hg.shared-marks false
 
 	HGEDITOR=true
 	HGMERGE=true
@@ -132,6 +120,31 @@ setup () {
 
 setup
 
+test_expect_success 'rename' '
+	test_when_finished "rm -rf gitrepo* hgrepo*" &&
+
+	(
+	hg init hgrepo1 &&
+	cd hgrepo1 &&
+	echo alpha > alpha &&
+	hg add alpha &&
+	hg commit -m "add alpha" &&
+	hg mv alpha beta &&
+	hg commit -m "rename alpha to beta"
+	) &&
+
+	for x in hg git
+	do
+		git_clone_$x hgrepo1 gitrepo-$x &&
+		hg_clone_$x gitrepo-$x hgrepo2-$x &&
+		hg_log hgrepo2-$x > "hg-log-$x" &&
+		git_log gitrepo-$x > "git-log-$x"
+	done &&
+
+	test_cmp hg-log-hg hg-log-git &&
+	test_cmp git-log-hg git-log-git
+'
+
 test_expect_success 'executable bit' '
 	test_when_finished "rm -rf gitrepo* hgrepo*" &&
 

test/main-push.t

@@ -270,10 +270,10 @@ test_expect_success 'push with renamed executable preserves executable bit' '
 	) &&
 
 	(
+	umask 0 &&
 	cd hgrepo &&
 	hg update &&
 	stat content2 >expected &&
-	# umask mileage might vary
 	grep -- -r.xr.xr.x expected
 	)
 '

test/main.t

@@ -22,13 +22,7 @@ fi
 
 if ! test_have_prereq PYTHON
 then
-	skip_all='skipping remote-hg tests; python not available'
+	skip_all='skipping remote-hg tests; python with mercurial not available'
-	test_done
-fi
-
-if ! python2 -c 'import mercurial' > /dev/null 2>&1
-then
-	skip_all='skipping remote-hg tests; mercurial not available'
 	test_done
 fi
 
@@ -96,14 +90,14 @@ check_push () {
 		'')
 			grep "^   [a-f0-9]*\.\.[a-f0-9]* *${branch} -> ${branch}$" error || ref_ret=1
 			;;
+		*)
+			echo "BUG: wrong kind '$kind'" && return 3
+			;;
 		esac
-		test $ref_ret -ne 0 && echo "match for '$branch' failed" && break
+		test $ref_ret -ne 0 && echo "match for '$branch' failed" && return 2
 	done
 
-	if test $expected_ret -ne $ret || test $ref_ret -ne 0
+	test $expected_ret -ne $ret && return 1
-	then
-		return 1
-	fi
 
 	return 0
 }
@@ -686,11 +680,11 @@ test_expect_success 'remote big push' '
 		check_branch hgrepo default one &&
 		check_branch hgrepo good_branch "good branch" &&
 		check_branch hgrepo bad_branch "bad branch" &&
-		check_branch hgrepo new_branch '' &&
+		check_branch hgrepo new_branch &&
 		check_bookmark hgrepo good_bmark one &&
 		check_bookmark hgrepo bad_bmark1 one &&
 		check_bookmark hgrepo bad_bmark2 one &&
-		check_bookmark hgrepo new_bmark ''
+		check_bookmark hgrepo new_bmark
 	fi
 '
 
@@ -755,7 +749,6 @@ test_expect_success 'remote big push non fast forward' '
 		# so it will already have pushed some above previously
 		# (and master is a fake one that jumps around a bit)
 		check_push 1 --all <<-\EOF
-		master:non-fast-forward
 		bad_bmark:non-fast-forward
 		branches/bad_branch:non-fast-forward
 		EOF
@@ -770,7 +763,7 @@ test_expect_success 'remote big push non fast forward' '
 	)
 '
 
-test_expect_failure 'remote big push force' '
+test_expect_success 'remote big push force' '
 	test_when_finished "rm -rf hgrepo gitrepo*" &&
 
 	setup_big_push
@@ -778,19 +771,32 @@ test_expect_failure 'remote big push force' '
 	(
 	cd gitrepo &&
 
-	check_push 0 --force --all <<-\EOF
+	if test "$CAPABILITY_PUSH" = "t"
-	master
+	then
-	good_bmark
+		check_push 0 --force --all <<-\EOF
-	branches/good_branch
+		master:forced-update
-	new_bmark:new
+		good_bmark:forced-update
-	branches/new_branch:new
+		branches/good_branch:forced-update
-	bad_bmark1:forced-update
+		new_bmark:new
-	bad_bmark2:forced-update
+		branches/new_branch:new
-	branches/bad_branch:forced-update
+		bad_bmark1:forced-update
-	EOF
+		bad_bmark2:forced-update
+		branches/bad_branch:forced-update
+		EOF
+	else
+		check_push 0 --force --all <<-\EOF
+		master
+		good_bmark
+		branches/good_branch
+		new_bmark:new
+		branches/new_branch:new
+		bad_bmark1:forced-update
+		bad_bmark2:forced-update
+		branches/bad_branch:forced-update
+		EOF
+	fi
 	) &&
 
-	check_branch hgrepo default six &&
 	check_branch hgrepo good_branch eight &&
 	check_branch hgrepo bad_branch nine &&
 	check_branch hgrepo new_branch ten &&
@@ -831,11 +837,55 @@ test_expect_success 'remote big push dry-run' '
 	check_branch hgrepo default one &&
 	check_branch hgrepo good_branch "good branch" &&
 	check_branch hgrepo bad_branch "bad branch" &&
-	check_branch hgrepo new_branch '' &&
+	check_branch hgrepo new_branch &&
 	check_bookmark hgrepo good_bmark one &&
 	check_bookmark hgrepo bad_bmark1 one &&
 	check_bookmark hgrepo bad_bmark2 one &&
-	check_bookmark hgrepo new_bmark ''
+	check_bookmark hgrepo new_bmark
+'
+
+test_expect_success 'remote big push force dry-run' '
+	test_when_finished "rm -rf hgrepo gitrepo*" &&
+
+	setup_big_push
+
+	(
+	cd gitrepo &&
+
+	if test "$CAPABILITY_PUSH" = "t"
+	then
+		check_push 0 --force --dry-run --all <<-\EOF
+		master:forced-update
+		good_bmark:forced-update
+		branches/good_branch:forced-update
+		new_bmark:new
+		branches/new_branch:new
+		bad_bmark1:forced-update
+		bad_bmark2:forced-update
+		branches/bad_branch:forced-update
+		EOF
+	else
+		check_push 0 --force --dry-run --all <<-\EOF
+		master
+		good_bmark
+		branches/good_branch
+		new_bmark:new
+		branches/new_branch:new
+		bad_bmark1:forced-update
+		bad_bmark2:forced-update
+		branches/bad_branch:forced-update
+		EOF
+	fi
+	) &&
+
+	check_branch hgrepo default one &&
+	check_branch hgrepo good_branch "good branch" &&
+	check_branch hgrepo bad_branch "bad branch" &&
+	check_branch hgrepo new_branch &&
+	check_bookmark hgrepo good_bmark one &&
+	check_bookmark hgrepo bad_bmark1 one &&
+	check_bookmark hgrepo bad_bmark2 one &&
+	check_bookmark hgrepo new_bmark
 '
 
 test_expect_success 'remote double failed push' '
@@ -995,7 +1045,7 @@ testpushupdatesnotes='
 	(
 	cd gitrepo &&
 	echo two > content &&
-	git commit -a -m two
+	git commit -a -m two &&
 	git push
 	) &&
 
@@ -1081,7 +1131,7 @@ test_expect_success 'push merged named branch' '
 	git push
 	) &&
 
-	cat > expected <<-EOF
+	cat > expected <<-EOF &&
 	Merge
 	three
 	two
@@ -1122,7 +1172,7 @@ test_expect_success 'push tag different branch' '
 	cd hgrepo &&
 	echo one > content &&
 	hg add content &&
-	hg commit -m one
+	hg commit -m one &&
 	hg branch feature &&
 	echo two > content &&
 	hg commit -m two
@@ -1229,6 +1279,55 @@ test_expect_success 'clone can ignore invalid refnames' '
 	check_files gitrepo "test.txt"
 '
 
+test_expect_success 'push annotated tag' '
+	test_when_finished "rm -rf hgrepo gitrepo" &&
+
+	(
+	hg init hgrepo &&
+	cd hgrepo &&
+	echo one > content &&
+	hg add content &&
+	hg commit -m one
+	) &&
+
+	(
+	git clone "hg::hgrepo" gitrepo &&
+	cd gitrepo &&
+	git tag -m "Version 1.0" v1.0 &&
+	git push --tags
+	) &&
+
+	cat > expected <<-\EOF &&
+	tip:Version 1.0:C O Mitter <committer@example.com>
+	v1.0:one:H G Wells <wells@example.com>
+	EOF
+
+	hg -R hgrepo log --template "{tags}:{desc}:{author}\n" > actual &&
+
+	test_cmp expected actual
+'
+
+test_expect_success 'timezone issues with negative offsets' '
+	test_when_finished "rm -rf hgrepo gitrepo1 gitrepo2" &&
+
+	hg init hgrepo &&
+
+	(
+	git clone "hg::hgrepo" gitrepo1 &&
+	cd gitrepo1 &&
+	echo two >> content &&
+	git add content &&
+	git commit -m two --date="2016-09-26 00:00:00 -0230" &&
+	git push
+	) &&
+
+	git clone "hg::hgrepo" gitrepo2 &&
+
+	git --git-dir=gitrepo1/.git log -1 --format="%ai" > expected &&
+	git --git-dir=gitrepo2/.git log -1 --format="%ai" > actual &&
+	test_cmp expected actual
+'
+
 if test "$CAPABILITY_PUSH" != "t"
 then
 test_done

test/sharness.sh

@@ -18,33 +18,80 @@
 # along with this program.  If not, see http://www.gnu.org/licenses/ .
 
 # Public: Current version of Sharness.
-SHARNESS_VERSION="0.3.0"
+SHARNESS_VERSION="1.1.0"
 export SHARNESS_VERSION
 
 # Public: The file extension for tests.  By default, it is set to "t".
-: ${SHARNESS_TEST_EXTENSION:=t}
+: "${SHARNESS_TEST_EXTENSION:=t}"
 export SHARNESS_TEST_EXTENSION
 
-# Keep the original TERM for say_color
+# Public: Root directory containing tests. Tests can override this variable,
-ORIGINAL_TERM=$TERM
+# e.g. for testing Sharness itself.
+if test -z "$SHARNESS_TEST_DIRECTORY"
+then
+	SHARNESS_TEST_DIRECTORY=$(pwd)
+else
+	# ensure that SHARNESS_TEST_DIRECTORY is an absolute path so that it
+	# is valid even if the current working directory is changed
+	SHARNESS_TEST_DIRECTORY=$(cd "$SHARNESS_TEST_DIRECTORY" && pwd) || exit 1
+fi
+export SHARNESS_TEST_DIRECTORY
+
+if test -z "$SHARNESS_TEST_OUTPUT_DIRECTORY"
+then
+	# Similarly, override this to store the test-results subdir
+	# elsewhere
+	SHARNESS_TEST_OUTPUT_DIRECTORY=$SHARNESS_TEST_DIRECTORY
+fi
+
+#  Reset TERM to original terminal if found, otherwise save original TERM
+[ "x" = "x$SHARNESS_ORIG_TERM" ] &&
+		SHARNESS_ORIG_TERM="$TERM" ||
+		TERM="$SHARNESS_ORIG_TERM"
+# Public: The unsanitized TERM under which sharness is originally run
+export SHARNESS_ORIG_TERM
+
+# Export SHELL_PATH
+: "${SHELL_PATH:=$SHELL}"
+export SHELL_PATH
+
+# if --tee was passed, write the output not only to the terminal, but
+# additionally to the file test-results/$BASENAME.out, too.
+case "$SHARNESS_TEST_TEE_STARTED, $* " in
+done,*)
+	# do not redirect again
+	;;
+*' --tee '*|*' --verbose-log '*)
+	mkdir -p "$SHARNESS_TEST_OUTPUT_DIRECTORY/test-results"
+	BASE="$SHARNESS_TEST_OUTPUT_DIRECTORY/test-results/$(basename "$0" ".$SHARNESS_TEST_EXTENSION")"
+
+	# Make this filename available to the sub-process in case it is using
+	# --verbose-log.
+	SHARNESS_TEST_TEE_OUTPUT_FILE="$BASE.out"
+	export SHARNESS_TEST_TEE_OUTPUT_FILE
+
+	# Truncate before calling "tee -a" to get rid of the results
+	# from any previous runs.
+	: >"$SHARNESS_TEST_TEE_OUTPUT_FILE"
+
+	(SHARNESS_TEST_TEE_STARTED="done" ${SHELL_PATH} "$0" "$@" 2>&1;
+	 echo $? >"$BASE.exit") | tee -a "$SHARNESS_TEST_TEE_OUTPUT_FILE"
+	test "$(cat "$BASE.exit")" = 0
+	exit
+	;;
+esac
 
 # For repeatability, reset the environment to a known state.
+# TERM is sanitized below, after saving color control sequences.
 LANG=C
 LC_ALL=C
-PAGER=cat
+PAGER="cat"
 TZ=UTC
-TERM=dumb
 EDITOR=:
-export LANG LC_ALL PAGER TZ TERM EDITOR
+export LANG LC_ALL PAGER TZ EDITOR
 unset VISUAL CDPATH GREP_OPTIONS
 
-# Line feed
+[ "x$TERM" != "xdumb" ] && (
-LF='
-'
-
-[ "x$ORIGINAL_TERM" != "xdumb" ] && (
-		TERM=$ORIGINAL_TERM &&
-		export TERM &&
 		[ -t 1 ] &&
 		tput bold >/dev/null 2>&1 &&
 		tput setaf 1 >/dev/null 2>&1 &&
@@ -60,6 +107,8 @@ while test "$#" -ne 0; do
 		immediate=t; shift ;;
 	-l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
 		TEST_LONG=t; export TEST_LONG; shift ;;
+	--in|--int|--inte|--inter|--intera|--interac|--interact|--interacti|--interactiv|--interactive|--interactive-|--interactive-t|--interactive-te|--interactive-tes|--interactive-test|--interactive-tests):
+		TEST_INTERACTIVE=t; export TEST_INTERACTIVE; verbose=t; shift ;;
 	-h|--h|--he|--hel|--help)
 		help=t; shift ;;
 	-v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
@@ -68,49 +117,69 @@ while test "$#" -ne 0; do
 		# Ignore --quiet under a TAP::Harness. Saying how many tests
 		# passed without the ok/not ok details is always an error.
 		test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
+	--chain-lint)
+		chain_lint=t; shift ;;
+	--no-chain-lint)
+		chain_lint=; shift ;;
 	--no-color)
 		color=; shift ;;
+	--tee)
+		shift ;; # was handled already
 	--root=*)
 		root=$(expr "z$1" : 'z[^=]*=\(.*\)')
 		shift ;;
+	--verbose-log)
+		verbose_log=t
+		shift ;;
 	*)
 		echo "error: unknown test option '$1'" >&2; exit 1 ;;
 	esac
 done
 
 if test -n "$color"; then
+	# Save the color control sequences now rather than run tput
+	# each time say_color() is called.  This is done for two
+	# reasons:
+	#   * TERM will be changed to dumb
+	#   * HOME will be changed to a temporary directory and tput
+	#     might need to read ~/.terminfo from the original HOME
+	#     directory to get the control sequences
+	# Note:  This approach assumes the control sequences don't end
+	# in a newline for any terminal of interest (command
+	# substitutions strip trailing newlines).  Given that most
+	# (all?) terminals in common use are related to ECMA-48, this
+	# shouldn't be a problem.
+	say_color_error=$(tput bold; tput setaf 1) # bold red
+	say_color_skip=$(tput setaf 4) # blue
+	say_color_warn=$(tput setaf 3) # brown/yellow
+	say_color_pass=$(tput setaf 2) # green
+	say_color_info=$(tput setaf 6) # cyan
+	say_color_reset=$(tput sgr0)
+	say_color_raw="" # no formatting for normal text
 	say_color() {
-		(
+		test -z "$1" && test -n "$quiet" && return
-		TERM=$ORIGINAL_TERM
-		export TERM
 		case "$1" in
-		error)
+			error) say_color_color=$say_color_error ;;
-			tput bold; tput setaf 1;; # bold red
+			skip) say_color_color=$say_color_skip ;;
-		skip)
+			warn) say_color_color=$say_color_warn ;;
-			tput setaf 4;; # blue
+			pass) say_color_color=$say_color_pass ;;
-		warn)
+			info) say_color_color=$say_color_info ;;
-			tput setaf 3;; # brown/yellow
+			*) say_color_color=$say_color_raw ;;
-		pass)
-			tput setaf 2;; # green
-		info)
-			tput setaf 6;; # cyan
-		*)
-			test -n "$quiet" && return;;
 		esac
 		shift
-		printf "%s" "$*"
+		printf '%s%s%s\n' "$say_color_color" "$*" "$say_color_reset"
-		tput sgr0
-		echo
-		)
 	}
 else
 	say_color() {
 		test -z "$1" && test -n "$quiet" && return
 		shift
-		printf "%s\n" "$*"
+		printf '%s\n' "$*"
 	}
 fi
 
+TERM=dumb
+export TERM
+
 error() {
 	say_color error "error: $*"
 	EXIT_OK=t
@@ -121,7 +190,7 @@ say() {
 	say_color info "$*"
 }
 
-test -n "$test_description" || error "Test script did not set test_description."
+test -n "${test_description:-}" || error "Test script did not set test_description."
 
 if test "$help" = "t"; then
 	echo "$test_description"
@@ -130,7 +199,11 @@ fi
 
 exec 5>&1
 exec 6<&0
-if test "$verbose" = "t"; then
+if test "$verbose_log" = "t"
+then
+	exec 3>>"$SHARNESS_TEST_TEE_OUTPUT_FILE" 4>&3
+elif test "$verbose" = "t"
+then
 	exec 4>&2 3>&1
 else
 	exec 4>/dev/null 3>/dev/null
@@ -161,7 +234,7 @@ trap 'die' EXIT
 # implicitly by specifying the prerequisite name in calls to test_expect_success
 # or test_expect_failure.
 #
-# $1 - Name of prerequiste (a simple word, in all capital letters by convention)
+# $1 - Name of prerequisite (a simple word, in all capital letters by convention)
 #
 # Examples
 #
@@ -198,7 +271,7 @@ test_have_prereq() {
 	# prerequisites can be concatenated with ','
 	save_IFS=$IFS
 	IFS=,
-	set -- $*
+	set -- $@
 	IFS=$save_IFS
 
 	total_prereq=0
@@ -215,7 +288,7 @@ test_have_prereq() {
 			negative_prereq=
 		esac
 
-		total_prereq=$(($total_prereq + 1))
+		total_prereq=$((total_prereq + 1))
 		case "$satisfied_prereq" in
 		*" $prerequisite "*)
 			satisfied_this_prereq=t
@@ -226,7 +299,7 @@ test_have_prereq() {
 
 		case "$satisfied_this_prereq,$negative_prereq" in
 		t,|,t)
-			ok_prereq=$(($ok_prereq + 1))
+			ok_prereq=$((ok_prereq + 1))
 			;;
 		*)
 			# Keep a list of missing prerequisites; restore
@@ -247,12 +320,12 @@ test_have_prereq() {
 # the text_expect_* functions instead.
 
 test_ok_() {
-	test_success=$(($test_success + 1))
+	test_success=$((test_success + 1))
-	say_color "" "ok $test_count - $@"
+	say_color "" "ok $test_count - $*"
 }
 
 test_failure_() {
-	test_failure=$(($test_failure + 1))
+	test_failure=$((test_failure + 1))
 	say_color error "not ok $test_count - $1"
 	shift
 	echo "$@" | sed -e 's/^/#	/'
@@ -260,13 +333,13 @@ test_failure_() {
 }
 
 test_known_broken_ok_() {
-	test_fixed=$(($test_fixed + 1))
+	test_fixed=$((test_fixed + 1))
-	say_color error "ok $test_count - $@ # TODO known breakage vanished"
+	say_color error "ok $test_count - $* # TODO known breakage vanished"
 }
 
 test_known_broken_failure_() {
-	test_broken=$(($test_broken + 1))
+	test_broken=$((test_broken + 1))
-	say_color warn "not ok $test_count - $@ # TODO known breakage"
+	say_color warn "not ok $test_count - $* # TODO known breakage"
 }
 
 # Public: Execute commands in debug mode.
@@ -287,10 +360,29 @@ test_debug() {
 	test "$debug" = "" || eval "$1"
 }
 
+# Public: Stop execution and start a shell.
+#
+# This is useful for debugging tests and only makes sense together with "-v".
+# Be sure to remove all invocations of this command before submitting.
+test_pause() {
+	if test "$verbose" = t; then
+		"$SHELL_PATH" <&6 >&3 2>&4
+	else
+		error >&5 "test_pause requires --verbose"
+	fi
+}
+
 test_eval_() {
 	# This is a separate function because some tests use
 	# "return" to end a test_expect_success block early.
-	eval </dev/null >&3 2>&4 "$*"
+	case ",$test_prereq," in
+	*,INTERACTIVE,*)
+		eval "$*"
+		;;
+	*)
+		eval </dev/null >&3 2>&4 "$*"
+		;;
+	esac
 }
 
 test_run_() {
@@ -299,6 +391,13 @@ test_run_() {
 	test_eval_ "$1"
 	eval_ret=$?
 
+	if test "$chain_lint" = "t"; then
+		test_eval_ "(exit 117) && $1"
+		if test "$?" != 117; then
+			error "bug in the test script: broken &&-chain: $1"
+		fi
+	fi
+
 	if test -z "$immediate" || test $eval_ret = 0 || test -n "$expecting_failure"; then
 		test_eval_ "$test_cleanup"
 	fi
@@ -309,7 +408,7 @@ test_run_() {
 }
 
 test_skip_() {
-	test_count=$(($test_count + 1))
+	test_count=$((test_count + 1))
 	to_skip=
 	for skp in $SKIP_TESTS; do
 		case $this_test.$test_count in
@@ -328,7 +427,7 @@ test_skip_() {
 			of_prereq=" of $test_prereq"
 		fi
 
-		say_color skip >&3 "skipping test: $@"
+		say_color skip >&3 "skipping test: $*"
 		say_color skip "ok $test_count # skip $1 (missing $missing_prereq${of_prereq})"
 		: true
 		;;
@@ -426,6 +525,44 @@ test_expect_failure() {
 	echo >&3 ""
 }
 
+# Public: Run test commands and expect anything from them. Used when a
+# test is not stable or not finished for some reason.
+#
+# When the test passed, an "ok" message is printed, but the number of
+# fixed tests is not incremented.
+#
+# When it failed, a "not ok ... # TODO known breakage" message is
+# printed, and the number of tests still broken is incremented.
+#
+# Failures from these tests won't cause --immediate to stop.
+#
+# Usually takes two arguments:
+# $1 - Test description
+# $2 - Commands to be executed.
+#
+# With three arguments, the first will be taken to be a prerequisite:
+# $1 - Comma-separated list of test prerequisites. The test will be skipped if
+#      not all of the given prerequisites are set. To negate a prerequisite,
+#      put a "!" in front of it.
+# $2 - Test description
+# $3 - Commands to be executed.
+#
+# Returns nothing.
+test_expect_unstable() {
+	test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq=
+	test "$#" = 2 || error "bug in the test script: not 2 or 3 parameters to test_expect_unstable"
+	export test_prereq
+	if ! test_skip_ "$@"; then
+		say >&3 "checking unstable test: $2"
+		if test_run_ "$2" unstable; then
+			test_ok_ "$1"
+		else
+			test_known_broken_failure_ "$1"
+		fi
+	fi
+	echo >&3 ""
+}
+
 # Public: Run command and ensure that it fails in a controlled way.
 #
 # Use it instead of "! <command>". For example, when <command> dies due to a
@@ -518,7 +655,7 @@ test_expect_code() {
 	shift
 	"$@"
 	exit_code=$?
-	if test $exit_code = $want_code; then
+	if test "$exit_code" = "$want_code"; then
 		return 0
 	fi
 
@@ -528,7 +665,7 @@ test_expect_code() {
 
 # Public: Compare two files to see if expected output matches actual output.
 #
-# The TEST_CMP variable defines the command used for the comparision; it
+# The TEST_CMP variable defines the command used for the comparison; it
 # defaults to "diff -u". Only when the test script was started with --verbose,
 # will the command's output, the diff, be printed to the standard output.
 #
@@ -551,6 +688,79 @@ test_cmp() {
 	${TEST_CMP:-diff -u} "$@"
 }
 
+# Public: portably print a sequence of numbers.
+#
+# seq is not in POSIX and GNU seq might not be available everywhere,
+# so it is nice to have a seq implementation, even a very simple one.
+#
+# $1 - Starting number.
+# $2 - Ending number.
+#
+# Examples
+#
+#   test_expect_success 'foo works 10 times' '
+#       for i in $(test_seq 1 10)
+#       do
+#           foo || return
+#       done
+#   '
+#
+# Returns 0 if all the specified numbers can be displayed.
+test_seq() {
+	i="$1"
+	j="$2"
+	while test "$i" -le "$j"
+	do
+		echo "$i" || return
+		i=$(("$i" + 1))
+	done
+}
+
+# Public: Check if the file expected to be empty is indeed empty, and barfs
+# otherwise.
+#
+# $1 - File to check for emptiness.
+#
+# Returns 0 if file is empty, 1 otherwise.
+test_must_be_empty() {
+	if test -s "$1"
+	then
+		echo "'$1' is not empty, it contains:"
+		cat "$1"
+		return 1
+	fi
+}
+
+# debugging-friendly alternatives to "test [-f|-d|-e]"
+# The commands test the existence or non-existence of $1. $2 can be
+# given to provide a more precise diagnosis.
+test_path_is_file () {
+	if ! test -f "$1"
+	then
+		echo "File $1 doesn't exist. $2"
+		false
+	fi
+}
+
+test_path_is_dir () {
+	if ! test -d "$1"
+	then
+		echo "Directory $1 doesn't exist. $2"
+		false
+	fi
+}
+
+# Check if the directory exists and is empty as expected, barf otherwise.
+test_dir_is_empty () {
+	test_path_is_dir "$1" &&
+	if test -n "$(find "$1" -mindepth 1 -maxdepth 1)"
+	then
+		echo "Directory '$1' is not empty, it contains:"
+		ls -la "$1"
+		return 1
+	fi
+}
+
 # Public: Schedule cleanup commands to be run unconditionally at the end of a
 # test.
 #
@@ -576,6 +786,23 @@ test_when_finished() {
 		} && (exit \"\$eval_ret\"); eval_ret=\$?; $test_cleanup"
 }
 
+# Public: Schedule cleanup commands to be run unconditionally when all tests
+# have run.
+#
+# This can be used to clean up things like test databases. It is not needed to
+# clean up temporary files, as test_done already does that.
+#
+# Examples:
+#
+#   cleanup mysql -e "DROP DATABASE mytest"
+#
+# Returns the exit code of the last cleanup command executed.
+final_cleanup=
+cleanup() {
+	final_cleanup="{ $*
+		} && (exit \"\$eval_ret\"); eval_ret=\$?; $final_cleanup"
+}
+
 # Public: Summarize test results and exit with an appropriate error code.
 #
 # Must be called at the end of each test script.
@@ -600,9 +827,9 @@ test_done() {
 	EXIT_OK=t
 
 	if test -z "$HARNESS_ACTIVE"; then
-		test_results_dir="$SHARNESS_TEST_DIRECTORY/test-results"
+		test_results_dir="$SHARNESS_TEST_OUTPUT_DIRECTORY/test-results"
 		mkdir -p "$test_results_dir"
-		test_results_path="$test_results_dir/${SHARNESS_TEST_FILE%.$SHARNESS_TEST_EXTENSION}.$$.counts"
+		test_results_path="$test_results_dir/$this_test.$$.counts"
 
 		cat >>"$test_results_path" <<-EOF
 		total $test_count
@@ -621,7 +848,7 @@ test_done() {
 		say_color warn "# still have $test_broken known breakage(s)"
 	fi
 	if test "$test_broken" != 0 || test "$test_fixed" != 0; then
-		test_remaining=$(( $test_count - $test_broken - $test_fixed ))
+		test_remaining=$((test_count - test_broken - test_fixed))
 		msg="remaining $test_remaining test(s)"
 	else
 		test_remaining=$test_count
@@ -641,6 +868,8 @@ test_done() {
 		fi
 		say "1..$test_count$skip_all"
 
+		test_eval_ "$final_cleanup"
+
 		test -d "$remove_trash" &&
 		cd "$(dirname "$remove_trash")" &&
 		rm -rf "$(basename "$remove_trash")"
@@ -656,14 +885,15 @@ test_done() {
 	esac
 }
 
-# Public: Root directory containing tests. Tests can override this variable,
+# Public: Source directory of test code and sharness library.
-# e.g. for testing Sharness itself.
+# This directory may be different from the directory in which tests are
-: ${SHARNESS_TEST_DIRECTORY:=$(pwd)}
+# being run.
-export SHARNESS_TEST_DIRECTORY
+: "${SHARNESS_TEST_SRCDIR:=$(cd "$(dirname "$0")" && pwd)}"
+export SHARNESS_TEST_SRCDIR
 
 # Public: Build directory that will be added to PATH. By default, it is set to
 # the parent directory of SHARNESS_TEST_DIRECTORY.
-: ${SHARNESS_BUILD_DIRECTORY:="$SHARNESS_TEST_DIRECTORY/.."}
+: "${SHARNESS_BUILD_DIRECTORY:="$SHARNESS_TEST_DIRECTORY/.."}"
 PATH="$SHARNESS_BUILD_DIRECTORY:$PATH"
 export PATH SHARNESS_BUILD_DIRECTORY
 
@@ -672,19 +902,43 @@ SHARNESS_TEST_FILE="$0"
 export SHARNESS_TEST_FILE
 
 # Prepare test area.
-test_dir="trash directory.$(basename "$SHARNESS_TEST_FILE" ".$SHARNESS_TEST_EXTENSION")"
+SHARNESS_TRASH_DIRECTORY="trash directory.$(basename "$SHARNESS_TEST_FILE" ".$SHARNESS_TEST_EXTENSION")"
-test -n "$root" && test_dir="$root/$test_dir"
+test -n "$root" && SHARNESS_TRASH_DIRECTORY="$root/$SHARNESS_TRASH_DIRECTORY"
-case "$test_dir" in
+case "$SHARNESS_TRASH_DIRECTORY" in
-/*) SHARNESS_TRASH_DIRECTORY="$test_dir" ;;
+/*) ;; # absolute path is good
- *) SHARNESS_TRASH_DIRECTORY="$SHARNESS_TEST_DIRECTORY/$test_dir" ;;
+ *) SHARNESS_TRASH_DIRECTORY="$SHARNESS_TEST_OUTPUT_DIRECTORY/$SHARNESS_TRASH_DIRECTORY" ;;
 esac
 test "$debug" = "t" || remove_trash="$SHARNESS_TRASH_DIRECTORY"
-rm -rf "$test_dir" || {
+rm -rf "$SHARNESS_TRASH_DIRECTORY" || {
 	EXIT_OK=t
 	echo >&5 "FATAL: Cannot prepare test area"
 	exit 1
 }
 
+
+#
+#  Load any extensions in $srcdir/sharness.d/*.sh
+#
+if test -d "${SHARNESS_TEST_SRCDIR}/sharness.d"
+then
+	for file in "${SHARNESS_TEST_SRCDIR}"/sharness.d/*.sh
+	do
+		# Ensure glob was not an empty match:
+		test -e "${file}" || break
+
+		if test -n "$debug"
+		then
+			echo >&5 "sharness: loading extensions from ${file}"
+		fi
+		. "${file}"
+		if test $? != 0
+		then
+			echo >&5 "sharness: Error loading ${file}. Aborting."
+			exit 1
+		fi
+	done
+fi
+
 # Public: Empty trash directory, the test area, provided for each test. The HOME
 # variable is set to that directory too.
 export SHARNESS_TRASH_DIRECTORY
@@ -692,10 +946,10 @@ export SHARNESS_TRASH_DIRECTORY
 HOME="$SHARNESS_TRASH_DIRECTORY"
 export HOME
 
-mkdir -p "$test_dir" || exit 1
+mkdir -p "$SHARNESS_TRASH_DIRECTORY" || exit 1
 # Use -P to resolve symlinks in our working directory so that the cwd
 # in subprocesses like git equals our $PWD (for pathname comparisons).
-cd -P "$test_dir" || exit 1
+cd -P "$SHARNESS_TRASH_DIRECTORY" || exit 1
 
 this_test=${SHARNESS_TEST_FILE##*/}
 this_test=${this_test%.$SHARNESS_TEST_EXTENSION}
@@ -708,4 +962,10 @@ for skp in $SKIP_TESTS; do
 	esac
 done
 
+test -n "$TEST_LONG" && test_set_prereq EXPENSIVE
+test -n "$TEST_INTERACTIVE" && test_set_prereq INTERACTIVE
+
+# Make sure this script ends with code 0
+:
+
 # vi: set ts=4 sw=4 noet :

test/test-lib.sh

@@ -1,8 +1,55 @@
 #!/bin/sh
 
-. ./sharness.sh
+if [ -z "$SHARNESS" ] ; then
+	for d in \
+		"." \
+		"$HOME/share/sharness" \
+		"/usr/local/share/sharness" \
+		"/usr/share/sharness"
+	do
+		f="$d/sharness.sh"
+		if [ -f "$f" ] ; then
+			SHARNESS="$f"
+		fi
+	done
+fi
+if [ -z "$SHARNESS" ] || [ ! -f "$SHARNESS" ] ; then
+	echo "sharness.sh not found" >&2
+	exit 1
+fi
 
-test_set_prereq PYTHON
+# Prevent sharness from adding the source directory to PATH
+# since the scripts use unversioned python for their shebang
+# but tests should run under the python with mercurial support
+# so create an empty directory and strip it from PATH afterwards
+SHARNESS_BUILD_DIRECTORY="$(mktemp -d)"
+. "$SHARNESS"
+export PATH="${PATH#*:}"
+rmdir "$SHARNESS_BUILD_DIRECTORY"
+
+if [ -n "$PYTHON" ] && "$PYTHON" -c 'import mercurial' 2> /dev/null ; then
+	: Use chosen Python version
+elif python3 -c 'import mercurial' 2> /dev/null ; then
+	PYTHON=python3
+elif python2 -c 'import mercurial' 2> /dev/null ; then
+	PYTHON=python2
+elif python -c 'import mercurial' 2> /dev/null ; then
+	PYTHON=python
+fi
+if [ -n "$PYTHON" ] ; then
+	test_set_prereq PYTHON
+
+	# Change shebang on a copy of scripts to chosen Python version
+	TEST_BIN="$SHARNESS_TRASH_DIRECTORY/bin"
+	mkdir -p "$TEST_BIN"
+	for s in git-remote-hg git-hg-helper ; do
+		printf "%s\n" "#!/usr/bin/env $PYTHON" > "$TEST_BIN/$s"
+		tail -n +2 "$SHARNESS_TEST_DIRECTORY/../$s" >> "$TEST_BIN/$s"
+		chmod u+x "$TEST_BIN/$s"
+	done
+	export PATH="$TEST_BIN${PATH:+:$PATH}"
+	unset TEST_BIN
+fi
 
 GIT_AUTHOR_EMAIL=author@example.com
 GIT_AUTHOR_NAME='A U Thor'
@@ -10,3 +57,6 @@ GIT_COMMITTER_EMAIL=committer@example.com
 GIT_COMMITTER_NAME='C O Mitter'
 export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
 export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
+# maintain backwards compatible default
+# (as used in remote helper)
+git config --global init.defaultBranch master

tools/.gitignore

@@ -0,0 +1 @@
+results.txt

tools/check-versions

@@ -0,0 +1,303 @@
+#!/usr/bin/env ruby
+
+#
+# Copyright (c) 2019 Felipe Contreras
+#
+# This script runs the tests for all versions of the components:
+#   hg, hggit and dulwich
+#
+# You can run it without arguments, in which case it reads the file
+# 'versions.txt' and executes all those checks.
+#
+# Or you can pass the versions to check manually, like:
+#
+#   ./check-versions hg:4.7 hggit:0.8.12 dulwich:0.19.7
+#
+# Or you can pass just the hg version, the other versions are fetched from
+# 'versions.txt':
+#
+#   ./check-versions hg:5.0
+#
+
+require 'fileutils'
+require 'tmpdir'
+
+$tests = %w[main.t bidi.t hg-git.t]
+$workdir = "#{Dir.home}/.cache/git-remote-hg"
+$builddir = Dir.mktmpdir("git-remote-hg-build-")
+$testoutdir = Dir.mktmpdir("git-remote-hg-tests-")
+
+at_exit {
+  FileUtils.remove_entry($builddir)
+  FileUtils.remove_entry($testoutdir)
+}
+
+QUIET, LOW, HIGH = (1..3).to_a
+$verbosity = LOW
+
+# Util {{{1
+
+def section(text)
+  puts [nil, text, '=' * text.size]
+end
+
+def title(text)
+  puts [nil, text, '-' * text.size] unless $verbosity < HIGH
+end
+
+def run_cmd(cmd, fatal: true)
+  puts cmd.join(' ') unless $verbosity < HIGH
+  result = system(*cmd)
+  unless result or not fatal
+    STDERR.puts "Failed to run command '%s'" % cmd.join(' ')
+    exit -1
+  end
+  result
+end
+
+def check_version(a, b)
+  return true if a == '@'
+  a = a.split('.').map(&:to_i)
+  b = b.split('.').map(&:to_i)
+  (a <=> b) >= 0
+end
+
+# Component {{{1
+
+class Component
+
+  attr_reader :id
+
+  def initialize(id, url, kind: nil, **args)
+    @id = id
+    @url = url
+    @kind = kind || (url.start_with?('git') ? :git : :hg)
+    @tool = @kind.to_s
+    @checkout_fix = args[:checkout_fix]
+    @version_format = args[:version_format]
+  end
+
+  def dir
+    "#{$workdir}/#{@id}"
+  end
+
+  def get_version(version)
+    return @kind == :hg ? 'tip' : '@' if version == '@'
+    @version_format ? @version_format % version : version
+  end
+
+  def clone
+    run_cmd [@tool, 'clone', '-q', @url, dir]
+  end
+
+  def checkout(version)
+    Dir.chdir(dir) do
+      case @kind
+      when :hg
+        cmd = %w[update --clean]
+      when :git
+        cmd = %w[reset --hard]
+      else
+        cmd = %w[checkout]
+      end
+      run_cmd [@tool] + cmd + ['-q', get_version(version)]
+      @checkout_fix.call(version) if @checkout_fix
+    end
+  end
+
+  def build
+    Dir.chdir(dir) do
+      targets = %w[build_py build_ext].map { |e| [e, '--build-lib', "#{$builddir}/python"] }
+      run_cmd %w[python setup.py --quiet] + targets.flatten
+    end
+  end
+
+end
+
+# Functions {{{1
+
+def setup
+  dirs = %w[bin python]
+  FileUtils.mkdir_p(dirs.map { |e| "#{$builddir}/#{e}" })
+  FileUtils.mkdir_p($workdir)
+
+  $components.each do |id, component|
+    next if File.exists?(component.dir)
+
+    if $verbosity < HIGH
+      puts "Cloning #{component.id}"
+    else
+      title "Cloning #{component.id}"
+    end
+    component.clone
+  end
+end
+
+def test_env(paths: nil)
+  old = ENV.to_h
+  paths.each do |id, path|
+    name = id.to_s
+    ENV[name] = "#{path}:#{ENV[name]}"
+  end
+  r = yield
+  ENV.replace(old)
+  return r
+end
+
+def run_tests(tests)
+  title "Running tests"
+
+  Dir.chdir("#{__dir__}/../test") do
+    case $verbosity
+    when QUIET
+      tests_opt = tests.join(' ')
+      cmd = "prove -q #{tests_opt} :: -i"
+    when LOW
+      tests_opt = "T='%s'" % tests.join(' ')
+      cmd = "make -j1 #{tests_opt}"
+    else
+      tests_opt = "T='%s'" % tests.join(' ')
+      cmd = "TEST_OPTS='-v -i' make -j1 #{tests_opt}"
+    end
+    system(cmd)
+  end
+end
+
+def versions_to_s(versions)
+  versions.map { |k,v| "#{k}:#{v}" }.join(' ')
+end
+
+def versions_from_args(args)
+  args.map { |e| k, v = e.split(':'); [k.to_sym, v] }.to_h
+end
+
+def versions_from_s(str)
+  versions_from_args(str.split(' '))
+end
+
+def check(versions)
+  section versions_to_s(versions)
+
+  versions.each do |id, version|
+    component = $components[id]
+    next unless component
+
+    title "Checking out #{component.id} #{version}"
+    component.checkout(version)
+
+    title "Building #{component.id}"
+    component.build
+  end
+
+  paths = {
+    PATH: "#{$builddir}/bin",
+    PYTHONPATH: "#{$builddir}/python",
+  }
+
+  test_env(paths: paths) do
+    ENV['SHARNESS_TEST_OUTPUT_DIRECTORY'] = $testoutdir
+    run_tests($tests)
+  end
+end
+
+# Add components {{{1
+
+$components = {}
+
+def add_component(id, url, **args)
+  $components[id] = Component.new(id, url, **args)
+end
+
+hg_checkout_fix = lambda do |version|
+  FileUtils.cp('hg', "#{$builddir}/bin/")
+
+  return if check_version(version, '4.3')
+
+  if run_cmd %W[hg import -q --no-commit #{__dir__}/hg_setup_hack_2.4.patch], fatal: false
+    File.write('.hg_force_version', "%s\n" % version)
+  else
+    File.write('mercurial/__version__.py', "version = \"%s\"\n" % version)
+  end
+end
+
+add_component(:hg, 'https://www.mercurial-scm.org/repo/hg', checkout_fix: hg_checkout_fix)
+
+hggit_checkout_fix = lambda do |version|
+  return unless check_version(version, '0.8.0')
+
+  run_cmd %W[hg import -q --no-commit #{__dir__}/hggit_rename_fix_0.8.0.patch], fatal: false
+end
+
+add_component(:hggit, 'https://bitbucket.org/durin42/hg-git', checkout_fix: hggit_checkout_fix)
+
+add_component(:dulwich, 'https://github.com/dulwich/dulwich.git', version_format: 'dulwich-%s', kind: :git)
+
+def load_checks(file)
+  file.each do |e|
+    e.chomp!
+    next if e.empty? or e.start_with?('#')
+    content, comment = e.split(' # ')
+    versions = versions_from_s(content)
+    $checks << versions
+  end
+end
+
+def store_results(file)
+  $results.each do |versions, result|
+    content = versions_to_s(versions)
+    comment = result ? 'OK' : 'FAIL'
+    file.puts '%s # %s' % [content, comment]
+  end
+end
+
+# Main {{{1
+
+setup
+
+$checks = []
+$results = []
+
+$versions = versions_from_args(ARGV)
+
+File.open("#{__dir__}/versions.txt") do |f|
+  load_checks(f)
+end
+
+if $versions.size == 1 and $versions.key?(:hg)
+  # mode 1
+  $verbosity = LOW
+
+  if ['@', nil].include?($versions[:hg])
+    versions = $checks.last
+    versions[:hg] = $versions[:hg] if $versions[:hg]
+  else
+    versions = $checks.find { |e| e[:hg] == $versions[:hg] }
+    exit 1 unless versions
+  end
+
+  exit check(versions) ? 0 : 1
+elsif not $versions.empty?
+  # mode 2
+  $verbosity = HIGH
+
+  exit check(versions) ? 0 : 1
+else
+  # mode 3
+  $verbosity = QUIET
+
+  at_exit do
+    File.open("#{__dir__}/results.txt", 'w') do |f|
+      store_results(f)
+    end
+  end
+
+  failures = 0
+
+  $checks.each do |versions|
+    result = check(versions)
+    failures += 1 unless result
+    $results << [versions, result]
+  end
+
+  exit 1 unless failures == 0
+end

tools/hg_setup_hack_2.4.patch

@@ -0,0 +1,15 @@
+diff --git a/setup.py b/setup.py
+--- a/setup.py
++++ b/setup.py
+@@ -181,7 +181,10 @@
+     # error 0xc0150004. See: http://bugs.python.org/issue3440
+     env['SystemRoot'] = os.environ['SystemRoot']
+ 
+-if os.path.isdir('.hg'):
++if os.path.exists('.hg_force_version'):
++    with open('.hg_force_version') as f:
++        version = f.read().rstrip('\n')
++elif os.path.isdir('.hg'):
+     cmd = [sys.executable, 'hg', 'log', '-r', '.', '--template', '{tags}\n']
+     numerictags = [t for t in runhg(cmd, env).split() if t[0].isdigit()]
+     hgid = runhg([sys.executable, 'hg', 'id', '-i'], env).strip()

tools/hggit_rename_fix_0.8.0.patch

@@ -0,0 +1,22 @@
+diff --git a/hggit/git_handler.py b/hggit/git_handler.py
+--- a/hggit/git_handler.py
++++ b/hggit/git_handler.py
+@@ -693,6 +693,8 @@
+     def import_git_commit(self, commit):
+         self.ui.debug(_("importing: %s\n") % commit.id)
+ 
++        extra_in_message = self.ui.configbool('git', 'debugextrainmessage', False)
++
+         detect_renames = False
+         (strip_message, hg_renames,
+          hg_branch, extra) = git2hg.extract_hg_metadata(
+@@ -703,7 +705,8 @@
+             # renames detected from Git. This is because we export an extra
+             # 'HG:rename-source' Git parameter when this isn't set, which will
+             # break bidirectionality.
+-            extra['hg-git-rename-source'] = 'git'
++            if not extra_in_message:
++                extra['hg-git-rename-source'] = 'git'
+         else:
+             renames = hg_renames
+ 

tools/versions.txt

@@ -0,0 +1,33 @@
+# vi: ft=ruby
+
+hg:2.4 hggit:0.4.0 dulwich:0.9.0 # 2013_02
+hg:2.5 hggit:0.4.0 dulwich:0.9.0 # 2013_02
+hg:2.6 hggit:0.4.0 dulwich:0.9.0 # 2013_02
+hg:2.7 hggit:0.4.0 dulwich:0.9.0 # 2013_02
+hg:2.8 hggit:0.4.0 dulwich:0.9.0 # 2013_02
+hg:2.9 hggit:0.4.0 dulwich:0.9.0 # 2013_02
+
+hg:3.0 hggit:0.7.0 dulwich:0.10.0 # 2014_11
+hg:3.1 hggit:0.7.0 dulwich:0.10.0 # 2014_11
+hg:3.2 hggit:0.7.0 dulwich:0.10.0 # 2014_11
+
+hg:3.3 hggit:0.8.4 dulwich:0.13.0 # 2016_01
+hg:3.4 hggit:0.8.4 dulwich:0.13.0 # 2016_01
+hg:3.5 hggit:0.8.4 dulwich:0.13.0 # 2016_01
+hg:3.6 hggit:0.8.4 dulwich:0.13.0 # 2016_01
+hg:3.7 hggit:0.8.4 dulwich:0.13.0 # 2016_01
+hg:3.8 hggit:0.8.4 dulwich:0.13.0 # 2016_01
+hg:3.9 hggit:0.8.4 dulwich:0.13.0 # 2016_01
+
+hg:4.0 hggit:0.8.10 dulwich:0.18.0 # 2017_11
+hg:4.1 hggit:0.8.10 dulwich:0.18.0 # 2017_11
+hg:4.2 hggit:0.8.10 dulwich:0.18.0 # 2017_11
+hg:4.3 hggit:0.8.10 dulwich:0.18.0 # 2017_11
+hg:4.4 hggit:0.8.10 dulwich:0.18.0 # 2017_11
+
+hg:4.5 hggit:0.8.11 dulwich:0.18.0 # 2018_02
+hg:4.6 hggit:0.8.12 dulwich:0.19.7 # 2018_10
+hg:4.7 hggit:0.8.12 dulwich:0.19.7 # 2018_10
+hg:4.8 hggit:@ dulwich:0.19.11
+hg:4.9 hggit:@ dulwich:0.19.11
+hg:5.0 hggit:@ dulwich:0.19.11