Changes in release 2.1
+[2.0.14]
+* sort now accepts long options like "--reverse" and "--".
+* sort now checks option syntax as POSIX requires, except that (as usual
+ for GNU) options can follow file names unless POSIXLY_CORRECT is set.
+ For example, invalid positional combinations like "sort +1 -r -2" are
+ now rejected as per POSIX.
+* The next POSIX standard will require that obsolescent 'sort'
+ positional options like +1 be treated as file names, not options.
+ Please use 'sort -k' instead.
[2.0.13]
* pr accepts new -D or --date option, to specify date format.
* The following changes are required by POSIX: