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Kanishk Sachan
e3d80f59e2
GNU grep's PCRE backend supports only a single pattern. Supplying
multiple patterns via repeated -e flags, or a pattern string that
contains a literal newline, must exit 2 with the message:
the -P option only supports a single pattern
Add the validation immediately after patterns are collected, before
regex-mode selection. Add a test covering:
- two separate -e flags with -P
- a newline-embedded pattern string with -P
- single -e with -P still works normally
Closes #34
Grep, now in Rust
A Rust implementation of GNU Grep. This project is an initial release and may contain bugs.
Install
cargo install uu_grep
Building
Download Rust at: https://rustup.rs/
# Check out this repository
git clone https://github.com/uutils/grep
cd grep
# Build a release version
cargo build --release
# Run!
./target/release/grep --help
# Run tests (if needed; after making changes)
cargo test
Pre-commit hooks
This project uses pre-commit; run pre-commit install to enable the git hooks.
Known Issues
- Does not take
LANG, etc., into account for handling file encodings (non-UTF8 matches are treated as binary) - No localization support yet
- Performances need to be improved
Contributing
To contribute to uutils, please see CONTRIBUTING.
License
uutils is licensed under the MIT License - see the LICENSE file for details
GNU Grep is licensed under the GPL 3.0 or later.