hgext/graphlog.py

record: edit patch of newly added files (issue4304)

I tried to fix this issue in the past and had to revert the fix. This is a
second attempt without the regression we found with the first one.

record defines special headers (of file) as headers whose hunk are not shown
to the user for editing, they are used to represent deleted, moved and new
files. Since we want to authorize editing the patch of newly added file we
make the newly added file with some content not special anymore. This entails
that we have to save their content before applying the backup to be able to
revert it if the patch does not apply properly.
We reintroduce the test showing that newly added files can be edited and that
their content is shown to the user.

# ASCII graph log extension for Mercurial
#
# Copyright 2007 Joel Rosdahl <[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.

'''command to view revision graphs from a shell (DEPRECATED)

The functionality of this extension has been include in core Mercurial
since version 2.3.

This extension adds a --graph option to the incoming, outgoing and log
commands. When this options is given, an ASCII representation of the
revision graph is also shown.
'''

from mercurial.i18n import _
from mercurial import cmdutil, commands

cmdtable = {}
command = cmdutil.command(cmdtable)
testedwith = 'internal'

@command('glog',
    [('f', 'follow', None,
     _('follow changeset history, or file history across copies and renames')),
    ('', 'follow-first', None,
     _('only follow the first parent of merge changesets (DEPRECATED)')),
    ('d', 'date', '', _('show revisions matching date spec'), _('DATE')),
    ('C', 'copies', None, _('show copied files')),
    ('k', 'keyword', [],
     _('do case-insensitive search for a given text'), _('TEXT')),
    ('r', 'rev', [], _('show the specified revision or revset'), _('REV')),
    ('', 'removed', None, _('include revisions where files were removed')),
    ('m', 'only-merges', None, _('show only merges (DEPRECATED)')),
    ('u', 'user', [], _('revisions committed by user'), _('USER')),
    ('', 'only-branch', [],
     _('show only changesets within the given named branch (DEPRECATED)'),
     _('BRANCH')),
    ('b', 'branch', [],
     _('show changesets within the given named branch'), _('BRANCH')),
    ('P', 'prune', [],
     _('do not display revision or any of its ancestors'), _('REV')),
    ] + commands.logopts + commands.walkopts,
    _('[OPTION]... [FILE]'),
    inferrepo=True)
def graphlog(ui, repo, *pats, **opts):
    """show revision history alongside an ASCII revision graph

    Print a revision history alongside a revision graph drawn with
    ASCII characters.

    Nodes printed as an @ character are parents of the working
    directory.
    """
    opts['graph'] = True
    return commands.log(ui, repo, *pats, **opts)