nex3/sass-mode — pull request #11 by gramos (2014-01-29 10:10:32+00:00)
Title: auto-mode-alisp pattern should ends with \\

Hello I'm the maintainer of the sass-mode package for debian and I received this bug:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=712279

Doing a little of research I found that \\ is better than $ to used as ends of a line pattern, see this:

for string ends see: http://www.emacswiki.org/emacs/AutoModeAlist

Thanks