Vim syntax highlight for SunScript.
If you are using vim-plug, add the following line between call plug#begin('~/.vim/plugged') and call plug#end():
call plug#begin('~/.vim/plugged')
call plug#end()
Plug 'sup39/sunscript.vim'
Then :source $MYVIMRC and :PlugInstall to install this plug.
:source $MYVIMRC
:PlugInstall