[drupal-devel] Licence issues using GPL'ed SquirrelMail code in mailhandler.module?

[Mark Leicester]

Hello all	,

I'm making improvements to the mailhandler (and fixing the 
drupal_special_chars problem by replacing with check_plain). 
SquirrelMail already implements a very thorough URL parser, attachment 
handler, and mail re-wrapper. SquirrelMail is GNU GPL, so I'm wondering 
if I can re-use that code rather than reinvent. What are the licence 
implications? Do we simply need to credit the SquirrelMail project and 
redistribute the licence intact?

Regards,
Mark