I am happy to announce the release of lrexlib 2.7.1, Lua binding for regex libraries. * Fixed Lua 5.1 compatibility, broken in 2.7.0. * Added ability to specify no replacement to gsub with a nil or false replacement argument. Download it from https://github.com/downloads/rrthomas/lrexlib/lrexlib-2.7.1.zip lrexlib's home page is at https://github.com/rrthomas/lrexlib