# Syntax Highlighting

Since your runfile files are just ruby, you can set your text editor to show files with a runfile extension, as Ruby. This normally also works for main files that are named runfile.

To treat runfile as ruby in vim, add this to your ~/.exrc or ~/.vimrc file (create it if it does not exist):

au BufRead,BufNewFile runfile,*.runfile set syntax=ruby

To instruct GitHub code view screens to apply Ruby syntax highlighting to your runfiles, add a file named .gitattributes to your repository, with this content:

runfile linguist-language=Ruby
*.runfile linguist-language=Ruby