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__module__( ( ( s; /usr/lib64/python2.7/site-packages/mercurial/simplemerge.pyR s c C@ s� | d | d k s t � | d | d k s4 t � t | d | d � } t | d | d � } | | k rx | | f Sd Sd S( s Given two ranges return the range where they intersect or None.
>>> intersect((0, 10), (0, 6))
(0, 6)
>>> intersect((0, 10), (5, 15))
(5, 10)
>>> intersect((0, 10), (10, 15))
>>> intersect((0, 9), (10, 15))
>>> intersect((0, 9), (7, 15))
(7, 9)
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c C@ sp | | | | k r t SxQ t t j | | � t j | | � � D]$ \ } } | | | | k r@ t Sq@ Wt Sd S( s? Compare a[astart:aend] == b[bstart:bend], without slicing.
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Given strings BASE, OTHER, THIS, tries to produce a combined text
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� � q� Wd S( s' Return merge in cvs-like form.
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S( s� Yield sequence of line groups. Each one is a tuple:
'unchanged', lines
Lines unchanged from base
'a', lines
Lines taken from a
'same', lines
Lines taken from a (and equal to b)
'b', lines
Lines taken from b
'conflict', base_lines, a_lines, b_lines
Lines from base were changed to either a or b and conflict.
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} q q Wd S( s� Return sequences of matching and conflicting regions.
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have:
'unchanged', start, end
Take a region of base[start:end]
'same', astart, aend
b and a are different from base but give the same result
'a', start, end
Non-clashing insertion from a[start:end]
'conflict', zstart, zend, astart, aend, bstart, bend
Conflict between a and b, with z as common ancestor
Method is as follows:
The two sequences align only on regions which match the base
and both descendants. These are found by doing a two-way diff
of each one against the base, and then finding the
intersections between those regions. These "sync regions"
are by definition unchanged in both and easily dealt with.
The regions in between can be in any of three cases:
conflicted, or changed on only one side.
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Trim conflict regions of lines where A and B sides match.
Lines where both A and B have made the same changes at the beginning
or the end of each merge region are eliminated from the conflict
region and are instead considered the same.
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� } | j | | | | | | f � | S( s� Return a list of sync regions, where both descendants match the base.
Generates a list of (base1, base2, a1, a2, b1, b2). There is
always a zero-length sync region at the end of all the files.
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j r�| d k r�d Sd S( s[ Performs the simplemerge algorithm.
The merged result is written into `localctx`.
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