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doc: update ripgrep's description

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This now mentions PCRE2 support.
This commit is contained in:
Andrew Gallant
2018-08-21 21:24:02 -04:00
parent 74a89be641
commit fcd1853031
2 changed files with 24 additions and 13 deletions
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11
src/app.rs
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@@ -13,12 +13,13 @@ use clap::{self, App, AppSettings};
const ABOUT: &str = "
ripgrep (rg) recursively searches your current directory for a regex pattern.
By default, ripgrep will respect your `.gitignore` and automatically skip
hidden files/directories and binary files.
By default, ripgrep will respect your .gitignore and automatically skip hidden
files/directories and binary files.
ripgrep's regex engine uses finite automata and guarantees linear time
searching. Because of this, features like backreferences and arbitrary
lookaround are not supported.
ripgrep's default regex engine uses finite automata and guarantees linear
time searching. Because of this, features like backreferences and arbitrary
look-around are not supported. However, if ripgrep is built with PCRE2, then
the --pcre2 flag can be used to enable backreferences and look-around.
ripgrep supports configuration files. Set RIPGREP_CONFIG_PATH to a
configuration file. The file can specify one shell argument per line. Lines