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rust-revlog: fix incorrect results with NULL_NODE prefixes...
rust-revlog: fix incorrect results with NULL_NODE prefixes In case a short hash is a prefix of `NULL_NODE`, the correct revision number lookup is `NULL_REVISION` only if there is no match in the nodemap. Indeed, if there is a single nodemap match, then it is an ambiguity with the always matching `NULL_NODE`. Before this change, using the Mercurial development repository as a testbed (it has public changesets with node ID starting with `0005` and `0009`), this is what `rhg` did (plain `hg` provided for reference) ``` $ rust/target/debug/rhg cat -r 000 README README: no such file in rev 000000000000 $ hg cat -r 000 README abort: ambiguous revision identifier: 000 ``` Here is the expected output for `rhg` on ambiguous prefixes (again, before this change): ``` $ rust/target/debug/rhg cat -r 0001 README abort: ambiguous revision identifier: 0001 ``` The test provided by 8c29af0f6d6e in `test-rhg.t` could become flaky with this change, unless all hashes are fixed. We expect reviewers to be more sure about that than we are.
Matt Harbison - - Load All Authors

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deprecated.txt
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Mercurial evolves over time, some features, options, commands may be replaced by
better and more secure alternatives. This topic will help you migrating your
existing usage and/or configuration to newer features.
Commands
========
The following commands are still available but their use are not recommended:
``locate``
This command has been replaced by `hg files`.
``parents``
This command can be replaced by `hg summary` or `hg log` with appropriate
revsets. See `hg help revsets` for more information.
``tip``
The recommended alternative is `hg heads`.
Options
=======
``web.allowpull``
Renamed to `allow-pull`.
``web.allow_push``
Renamed to `allow-push`.