I've read about code being rewritten for license compliance but how does that work in practice?
Even a self contained file isn't so straightforward as how would you differentiate between "new code" and simply copying the old one as a "new patch"?
Even a self contained file isn't so straightforward as how would you differentiate between "new code" and simply copying the old one as a "new patch"?
"It is possible that there may be Mozilla source files containing contributed code for which the copyright holders refuse to grant permission for relicensing under the MPL/GPL/LGPL triple license. In those cases we will investigate whether the situation can be resolved by someone writing new code to replace the code which cannot be relicensed. (This may require writing a complete new source file, or simply rewriting one or more portions of an existing file.)"
https://www-archive.mozilla.org/MPL/relicensing-faq.html#per...
[1] https://en.wikipedia.org/wiki/UNIX_System_Laboratories,_Inc.....