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dirstate-tree: Borrow copy source paths from the "on disk" bytes...
dirstate-tree: Borrow copy source paths from the "on disk" bytes Use std::borrow::Cow to avoid some memory allocations and copying. These particular allocations are not visible when profiling (as many files in a typical repo don’t have a copy source). This change is "warm up" for doing the same with paths of files themselves, which is more involved since those paths are used as `HashMap` keys. This gets of the way the addition of a lifetime parameter to several types. Differential Revision: https://phab.mercurial-scm.org/D10559
Simon Sapin -
r47895:9be61845 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.