Ruby-like Syntax Highlighting in VIM for Thor

How can I configure vim to use the same syntax highlighting for Thor as it does for ruby? When I'm editing a *.thor file, I can use :set syntax=ruby, which works, but is not permanent. Is there a way to do something in my .vimrc file to conditional开发者_如何学Pythonly set the syntax to ruby if it's *.thor? Maybe create a thor syntax file and inherit from ruby?

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au BufRead,BufNewFile *.thor set filetype=ruby

I think should suffice... maybe this if you want to customize it later:

au BufRead,BufNewFile *.thor set filetype=thor
au! Syntax thor source $HOME/.vim/syntax/thor.vim

and copy ruby .vim syntax highlight file to $HOME/.vim/syntax/thor.vim

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autocmd BufNewFile,BufRead *.thor set syntax=ruby

should work.