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ba503eb677
It seems the inner literal detector fails spectacularly in cases of concatenations that involve groups. The issue here is that if the prefix of a group inside a concatenation can match the empty string, then any literals generated to that point in the concatenation need to be cut such that they are never extended. The detector isn't really built to handle this case, so we just act conservative cut literals whenever we see a sub-group. This may make some regexes slower, but the inner literal detector already misses plenty of cases. Literal detection (including in the regex engine) is a key component that needs to be completely rethought at some point. Fixes #1064
grep-regex
The grep-regex crate provides an implementation of the Matcher trait from
the grep-matcher crate. This implementation permits Rust's regex engine to
be used in the grep crate for fast line oriented searching.
Dual-licensed under MIT or the UNLICENSE.
Documentation
NOTE: You probably don't want to use this crate directly. Instead, you
should prefer the facade defined in the
grep
crate.
Usage
Add this to your Cargo.toml:
[dependencies]
grep-regex = "0.1"
and this to your crate root:
extern crate grep_regex;