rust/hg-core/Cargo.toml

rust-regex: fix issues with regex anchoring and performance

It turns out that the way I tried to work around `regex`'s behavior difference
with `re2` and Python's `re` was 1) buggy and 2) much more complicated than
needed.

In a few words:
`regex` adds `.*` on either side of patterns when no start or end anchor is
present. My previous workaround put `^` or `$` for every pattern, which is
wrong even without the other 2 bugs on top of it.
Using `^(?:<patterns>)` right at the end of the `regex` path fixes the issue.
I've opened an issue to get a build option instead:
https://github.com/rust-lang/regex/issues/675

Differential Revision: https://phab.mercurial-scm.org/D8506

[package]
name = "hg-core"
version = "0.1.0"
authors = ["Georges Racinet <[e-mail]>"]
description = "Mercurial pure Rust core library, with no assumption on Python bindings (FFI)"
edition = "2018"
build = "build.rs"

[lib]
name = "hg"

[dependencies]
byteorder = "1.3.4"
hex = "0.4.2"
lazy_static = "1.4.0"
libc = { version = "0.2.66", optional = true }
memchr = "2.3.3"
rand = "0.7.3"
rand_pcg = "0.2.1"
rand_distr = "0.2.2"
rayon = "1.3.0"
regex = "1.3.6"
twox-hash = "1.5.0"
same-file = "1.0.6"
crossbeam = "0.7.3"
micro-timer = "0.2.1"
log = "0.4.8"

[dev-dependencies]
clap = "*"
memmap = "0.7.0"
pretty_assertions = "0.6.1"
tempfile = "3.1.0"

[build-dependencies]
cc = { version = "1.0.48", optional = true }

[features]
default = []
with-re2 = ["cc", "libc"]