David Necas (Yeti) <yeti@physics.muni.cz>

Zuxy Meng <zuxy.meng@gmail.com> (Chinese encodings support)

Unicode data in src/unicodemap.c comes from various free on-line resources.

Files src/getopt_long.c src/getopt.h come from GNU libc getopt_long by the
Free Software Foundation.

Character type table lib/ctype.c is based on GLib one, by Peter Mattis,
Spencer Kimball, Josh MacDonald, and the GLib Team.