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comparison mercurial/revlogutils/deltas.py @ 39488:d629b6d2f05a

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revlog: clarify the comment attached to delta reuse The previous version was a bit complicated and referred to a deprecated configuration option.
author Boris Feld <boris.feld@octobus.net>
date Tue, 04 Sep 2018 21:28:28 +0200
parents 931386a0b108
children a33f394b2bfd
comparison
equal deleted inserted replaced
39487:931386a0b108 39488:d629b6d2f05a
619 """ 619 """
620 gdelta = revlog._generaldelta 620 gdelta = revlog._generaldelta
621 curr = len(revlog) 621 curr = len(revlog)
622 prev = curr - 1 622 prev = curr - 1
623 623
624 # This condition is true most of the time when processing 624 # First we try to reuse a the delta contained in the bundle.
625 # changegroup data into a generaldelta repo. The only time it 625 # (or from the source revlog)
626 # isn't true is if this is the first revision in a delta chain 626 #
627 # or if ``format.generaldelta=true`` disabled ``lazydeltabase``. 627 # This logic only applies to general delta repositories and can be disabled
628 # through configuration. Disabling reuse of source delta is useful when
629 # we want to make sure we recomputed "optimal" deltas.
628 if cachedelta and gdelta and revlog._lazydeltabase: 630 if cachedelta and gdelta and revlog._lazydeltabase:
629 # Assume what we received from the server is a good choice 631 # Assume what we received from the server is a good choice
630 # build delta will reuse the cache 632 # build delta will reuse the cache
631 yield (cachedelta[0],) 633 yield (cachedelta[0],)
632 634