Ulrik Haugen <email@example.com>. James R. Van Zandt <firstname.lastname@example.org> contributed lots by creating autoproject without which I wouldn't be using automake and autoconf. getopt* and error* come from the GNU C Library. Magenta H. Nezumi <email@example.com> has helped find bugs and given valuable feedback. Peter Pentchev <firstname.lastname@example.org> and Kris Kennaway
have helped find bugs. Graham Mitchell <email@example.com> contributed a performance patch.