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Viewing changes to bzrlib/option.py

terminal_width can now returns None.

* bzrlib/win32utils.py:
(get_console_size): Fix typo in comment.

* bzrlib/ui/text.py:
(TextProgressView._show_line): Handle the no terminal present case.

* bzrlib/tests/test_osutils.py:
(TestTerminalWidth): Update tests.

* bzrlib/tests/blackbox/test_too_much.py:
Fix some imports.
(OldTests.test_bzr): Handle the no terminal present case.

* bzrlib/tests/__init__.py:
(VerboseTestResult.report_test_start): Handle the no terminal
present case.

* bzrlib/status.py:
(show_pending_merges): Handle the no terminal present case.
(show_pending_merges.show_log_message): Factor out some
code. Handle the no terminal present case.

* bzrlib/osutils.py:
(terminal_width): Return None if no precise value can be found.

* bzrlib/log.py:
(LineLogFormatter.__init__): Handle the no terminal present case.
(LineLogFormatter.truncate): Accept None as max_len meaning no
truncation.
(LineLogFormatter.log_string): 

* bzrlib/help.py:
(_help_commands_to_text): Handle the no terminal present case.

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Lines of Context:
bzrlib/option.py
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    each revision specifier supplied.
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    >>> _parse_revision_str('234')
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    [<RevisionSpec_dwim 234>]
 
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    [<RevisionSpec_revno 234>]
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    >>> _parse_revision_str('234..567')
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    [<RevisionSpec_dwim 234>, <RevisionSpec_dwim 567>]
 
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    [<RevisionSpec_revno 234>, <RevisionSpec_revno 567>]
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    >>> _parse_revision_str('..')
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    [<RevisionSpec None>, <RevisionSpec None>]
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    >>> _parse_revision_str('..234')
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    [<RevisionSpec None>, <RevisionSpec_dwim 234>]
 
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    [<RevisionSpec None>, <RevisionSpec_revno 234>]
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    >>> _parse_revision_str('234..')
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    [<RevisionSpec_dwim 234>, <RevisionSpec None>]
 
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    [<RevisionSpec_revno 234>, <RevisionSpec None>]
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    >>> _parse_revision_str('234..456..789') # Maybe this should be an error
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    [<RevisionSpec_dwim 234>, <RevisionSpec_dwim 456>, <RevisionSpec_dwim 789>]
 
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    [<RevisionSpec_revno 234>, <RevisionSpec_revno 456>, <RevisionSpec_revno 789>]
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    >>> _parse_revision_str('234....789') #Error ?
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    [<RevisionSpec_dwim 234>, <RevisionSpec None>, <RevisionSpec_dwim 789>]
 
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    [<RevisionSpec_revno 234>, <RevisionSpec None>, <RevisionSpec_revno 789>]
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    >>> _parse_revision_str('revid:test@other.com-234234')
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    [<RevisionSpec_revid revid:test@other.com-234234>]
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    >>> _parse_revision_str('revid:test@other.com-234234..revid:test@other.com-234235')
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    [<RevisionSpec_revid revid:test@other.com-234234>, <RevisionSpec_revid revid:test@other.com-234235>]
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    >>> _parse_revision_str('revid:test@other.com-234234..23')
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    [<RevisionSpec_revid revid:test@other.com-234234>, <RevisionSpec_dwim 23>]
 
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    [<RevisionSpec_revid revid:test@other.com-234234>, <RevisionSpec_revno 23>]
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    >>> _parse_revision_str('date:2005-04-12')
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    [<RevisionSpec_date date:2005-04-12>]
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    >>> _parse_revision_str('date:2005-04-12 12:24:33')
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    >>> _parse_revision_str('date:2005-04-12,12:24:33')
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    [<RevisionSpec_date date:2005-04-12,12:24:33>]
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    >>> _parse_revision_str('-5..23')
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    [<RevisionSpec_dwim -5>, <RevisionSpec_dwim 23>]
 
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    [<RevisionSpec_revno -5>, <RevisionSpec_revno 23>]
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    >>> _parse_revision_str('-5')
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    [<RevisionSpec_dwim -5>]
 
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    [<RevisionSpec_revno -5>]
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    >>> _parse_revision_str('123a')
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    [<RevisionSpec_dwim 123a>]
 
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    Traceback (most recent call last):
 
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      ...
 
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    NoSuchRevisionSpec: No namespace registered for string: '123a'
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    >>> _parse_revision_str('abc')
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    [<RevisionSpec_dwim abc>]
 
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    Traceback (most recent call last):
 
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      ...
 
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    NoSuchRevisionSpec: No namespace registered for string: 'abc'
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    >>> _parse_revision_str('branch:../branch2')
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    [<RevisionSpec_branch branch:../branch2>]
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    >>> _parse_revision_str('branch:../../branch2')
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    [<RevisionSpec_branch branch:../../branch2>]
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    >>> _parse_revision_str('branch:../../branch2..23')
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    [<RevisionSpec_branch branch:../../branch2>, <RevisionSpec_dwim 23>]
 
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    [<RevisionSpec_branch branch:../../branch2>, <RevisionSpec_revno 23>]
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    >>> _parse_revision_str('branch:..\\\\branch2')
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    [<RevisionSpec_branch branch:..\\branch2>]
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    >>> _parse_revision_str('branch:..\\\\..\\\\branch2..23')
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    [<RevisionSpec_branch branch:..\\..\\branch2>, <RevisionSpec_dwim 23>]
 
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    [<RevisionSpec_branch branch:..\\..\\branch2>, <RevisionSpec_revno 23>]
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    """
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    # TODO: Maybe move this into revisionspec.py
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    revs = []
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    parent of the revision.
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    >>> _parse_change_str('123')
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    (<RevisionSpec_before before:123>, <RevisionSpec_dwim 123>)
 
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    (<RevisionSpec_before before:123>, <RevisionSpec_revno 123>)
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    >>> _parse_change_str('123..124')
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    Traceback (most recent call last):
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      ...