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changelog: lazy decode description (API)...
changelog: lazy decode description (API) Currently, changelog reading decodes read values. This is wasteful because a lot of times consumers aren't interested in some of these values. This patch changes description decoding to occur in changectx as needed. revsets reading changelog entries appear to speed up slightly: revset #7: author(lmoscovicz) plain 0) 0.906329 1) 0.872653 revset #8: author(mpm) plain 0) 0.903478 1) 0.878037 revset #9: author(lmoscovicz) or author(mpm) plain 0) 1.817855 1) 1.778680 revset #10: author(mpm) or author(lmoscovicz) plain 0) 1.837052 1) 1.764568

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multirevs.txt
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When Mercurial accepts more than one revision, they may be specified
individually, or provided as a topologically continuous range,
separated by the ":" character.
The syntax of range notation is [BEGIN]:[END], where BEGIN and END are
revision identifiers. Both BEGIN and END are optional. If BEGIN is not
specified, it defaults to revision number 0. If END is not specified,
it defaults to the tip. The range ":" thus means "all revisions".
If BEGIN is greater than END, revisions are treated in reverse order.
A range acts as a closed interval. This means that a range of 3:5
gives 3, 4 and 5. Similarly, a range of 9:6 gives 9, 8, 7, and 6.