anchor.diff:  1,BSD3
   1,BSD-3-clause
   1,BSD-2-Clause
  -1,BSD 3-clause
   8,BSD 3-Clause
  +2,BSD 3-clause
   3,BSD 2-Clause
   1,BSD + MPL 1.1/GPL 2.0/LGPL 2.1
   1,bsd
  -52,BSD
  +55,BSD
   2,Beerware
   1,BAT
  -1,ASL-2
  -6,Artistic 2.0
  +2,ASL-2
  +7,Artistic 2.0
   1,APLv2
   1,APL 2.0
   1,apachev2
   1,Apache2.0
  +10,APACHE2
   1,Apache2
  -10,APACHE2
   1,apache2
   3,Apache-2.0
   1,Apache-2
  
positive.code: 1,Various
  1,Unlicense
  1,UNLICENSE
  1,The Ruby License
  1,THE (extended) BEER-WARE LICENSE
  5,Simplified BSD
  1,Ruby's or GPLv2 or later
  1,Ruby's
  1,Ruby License
  5,Ruby
  2,R2CORBA
  4,Public domain
  25,Public Domain
  
negative.code: 10,Apache License 2.0
  9,Apache License (2.0)
  1,Apache Licence 2.0
  68,Apache 2.0
  3,Apache 2
  1,APACHE 2
  2,APACHE
  11,Apache
  1,All right reserved.
  1,all of them
  1,AGPL3
  6,AGPL
  3,ACE
  1,3-clause BSD
  1,3-Clause BSD
  