libre2 - C++ fast alternative to backtracking RE engines

Distribution: ALT Linux Sisyphus
Repository: Classic x86_64
Package name: libre2
Package version: 20160401
Package release: alt1_5
Package architecture: x86_64
Package type: rpm
Installed size: 447.60 KB
Download size: 447.60 KB
Official Mirror:
RE2 is a C++ library providing a fast, safe, thread-friendly alternative to backtracking regular expression engines like those used in PCRE, Perl, and Python. Backtracking engines are typically full of features and convenient syntactic sugar but can be forced into taking exponential amounts of time on even small inputs. In contrast, RE2 uses automata theory to guarantee that regular expression searches run in time linear in the size of the input, at the expense of some missing features (e.g back references and generalized assertions).



  • libre2 = 20160401-alt1_5
  • re2 = 20160401-alt1_5


    Install Howto

    1. Add the following line to /etc/apt/sources.list:
      rpm [Sisyphus] x86_64 classic
      rpm [Sisyphus] noarch classic
    2. Update the package index:
      # sudo apt-get update
    3. Install libre2 rpm package:
      # sudo apt-get install libre2


    • /usr/lib64/
    • /usr/lib64/
    • /usr/share/doc/libre2-20160401/AUTHORS
    • /usr/share/doc/libre2-20160401/CONTRIBUTORS
    • /usr/share/doc/libre2-20160401/LICENSE
    • /usr/share/doc/libre2-20160401/README


    2017-09-27 - Igor Vlasenko <> 20160401-alt1_5 - update to new release by fcimport

    2017-03-16 - Igor Vlasenko <> 20160401-alt1_3 - update to new release by fcimport

    2016-05-08 - Igor Vlasenko <> 20160401-alt1_2 - update to new release by fcimport

    2015-09-20 - Igor Vlasenko <> 20131024-alt1_5 - update to new release by fcimport

    2014-12-21 - Igor Vlasenko <> 20131024-alt1_3 - new version