hg

amend: stop specifying matcher, get all copies in wctx

When we're recreating the commit that we'll be committing, we don't want to
filter our copy information based on just the *new* [versions of the] files
we're amending. The test has an example of this case, but for clarity, the
situation is:

```
$ hg cp src dst && hg commit
<do some work>
$ hg amend some_unrelated_file.txt
$ hg status --copies
A dst
A some_unrelated_file.txt
```

What *should* happen is that `dst` should remain marked as a copy of `src`, but
this did not previously happen. `matcher` here only includes the files that were
specified on the commandline, so it only gets the copy information (if any, in
this example there's not) for `some_unrelated_file.txt`. When it goes to apply
the memctx to actually create the commit, the file copy information is
incomplete and loses the information for the files that shouldn't have been
affected at all by the amend.

Differential Revision: https://phab.mercurial-scm.org/D12625

#!/usr/bin/env python3
#
# mercurial - scalable distributed SCM
#
# Copyright 2005-2007 Olivia Mackall <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import absolute_import

import os
import sys

libdir = '@LIBDIR@'

if libdir != '@' 'LIBDIR' '@':
    if not os.path.isabs(libdir):
        libdir = os.path.join(
            os.path.dirname(os.path.realpath(__file__)), libdir
        )
        libdir = os.path.abspath(libdir)
    sys.path.insert(0, libdir)

# Make `pip install --user ...` packages available to the official Windows
# build.  Most py2 packaging installs directly into the system python
# environment, so no changes are necessary for other platforms.  The Windows
# py2 package uses py2exe, which lacks a `site` module.  Hardcode it according
# to the documentation.
if getattr(sys, 'frozen', None) == 'console_exe':
    vi = sys.version_info
    appdata = os.environ.get('APPDATA')
    if appdata:
        sys.path.append(
            os.path.join(
                appdata,
                'Python',
                'Python%d%d' % (vi[0], vi[1]),
                'site-packages',
            )
        )

from hgdemandimport import tracing

with tracing.log('hg script'):
    # enable importing on demand to reduce startup time
    try:
        if sys.version_info[0] < 3 or sys.version_info >= (3, 6):
            import hgdemandimport

            hgdemandimport.enable()
    except ImportError:
        sys.stderr.write(
            "abort: couldn't find mercurial libraries in [%s]\n"
            % ' '.join(sys.path)
        )
        sys.stderr.write("(check your install and PYTHONPATH)\n")
        sys.exit(-1)

    from mercurial import dispatch

    dispatch.run()