This is the regular expression project of Todd Proebsting Gregg Townsend Jasmin Uribe Department of Computer Science The University of Arizona Tucson, Arizona USA regex@cs.arizona.edu It comprises a library of Go language functions for experimenting with regular expressions and some associated command-line Unix utilities. It implements the regex.cs.arizona.edu website. This is primarily a research project, so there is no separate formal documentation. Library functions have comments designed for use with the godoc utility. Utility programs are also documented with comments which in this case are most easily viewed in a text editor. See also: LICENSE, BUILD, NOTES files.