~bzr-pqm/bzr/bzr.dev

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(robertc) Change the knit internal method for accessing data hunks to allow mapping knits into packs. (Robert Collins)

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available in one step. This allows the write lock to remain while making

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a series of data insertions. (e.g. data conversion). (Robert Collins)

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* In ``bzrlib.knit`` the internal interface has been altered to use

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3-tuples (index, pos, length) rather than two-tuples (pos, length) to

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describe where data in a knit is, allowing knits to be split into

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many files. (Robert Collins)

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* ``bzrlib.knit._KnitData`` split into cache management and physical access

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with two access classes - ``_PackAccess`` and ``_KnitAccess`` defined.

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The former provides access into a .pack file, and the latter provides the

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current production repository form of .knit files. (Robert Collins)

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TESTING:

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* Remove selftest ``--clean-output``, ``--numbered-dirs`` and