Coffescript supports ruby-style string interpolation inside double quotes.
author = "Wittgenstein"
quote = "A picture is a fact. -- #{ author }"
# A picture is a fact. -- Wittgenstein
As the string interpolation is not limited to simple variable substitution, it's easy to define an escaping function and use it inside the string interpolation
escape = (s) -> (''+s).replace(/&/g, '&').replace(/</g, '<')
.replace(/>/g, '>').replace(/"/g, '"')
.replace(/'/g, ''').replace(/\//g,'/')
author = '<blink>Wittgenstein</blink>'
quote = "A picture is a fact. -- #{ escape author }"
#A picture is a fact. -- <blink>Wittgenstein</blink>