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rhg: Add support for `rhg status --copies`...
rhg: Add support for `rhg status --copies` Copy sources are collected during `status()` rather than after the fact like in Python, because `status()` takes a `&mut` exclusive reference to the dirstate map (in order to potentially mutate it for directory mtimes) and returns `Cow<'_, HgPath>` that borrow the dirstate map. Even though with `Cow` only some shared borrows remain, the still extend the same lifetime of the initial `&mut` so the dirstate map cannot be borrowed again to access copy sources after the fact: https://doc.rust-lang.org/nomicon/lifetime-mismatch.html#limits-of-lifetimes Additionally, collecting copy sources during the dirstate tree traversal that `status()` already does avoids the cost of another traversal or other lookups (though I haven’t benchmarked that cost). Differential Revision: https://phab.mercurial-scm.org/D11899
Simon Sapin -
r49285:473af5cb default
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Mercurial

Mercurial is a fast, easy to use, distributed revision control tool for software developers.

Basic install:

$ make            # see install targets
$ make install    # do a system-wide install
$ hg debuginstall # sanity-check setup
$ hg              # see help

Running without installing:

$ make local      # build for inplace usage
$ ./hg --version  # should show the latest version

See https://mercurial-scm.org/ for detailed installation instructions, platform-specific notes, and Mercurial user information.

Notes for packagers

Mercurial ships a copy of the python-zstandard sources. This is used to provide support for zstd compression and decompression functionality. The module is not intended to be replaced by the plain python-zstandard nor is it intended to use a system zstd library. Patches can result in hard to diagnose errors and are explicitly discouraged as unsupported configuration.