Make backreference support clear.

Fixes #268.
2016-12-12 07:03:37 -05:00
parent 652c70f207
commit 8396d3ffaa
4 changed files with 23 additions and 4 deletions
--- a/doc/rg.1.md
+++ b/doc/rg.1.md
@@ -21,6 +21,10 @@ rg [*options*] --version
 ripgrep (rg) combines the usability of The Silver Searcher (an ack clone) with
 the raw speed of grep.

+ripgrep's regex engine uses finite automata and guarantees linear time
+searching. Because of this, features like backreferences and arbitrary
+lookaround are not supported.
+
 Project home page: https://github.com/BurntSushi/ripgrep

 # COMMON OPTIONS