The character at the beginning of the string isn't a corrupt ':', it is a Unicode control character '\uFDD0' which seems to be output as an internal detail so that clojurescript can distinguish keywords and strings.
The clojurescript compiler outputs javascript as utf-8. So technically, everything is fine - but if you are serving your javascript up from a webserver, you need to ensure that the javascript is served in a way that the browser understands that it is encoded with UTF-8. You could use .htaccess to ensure that the content type header is set correctly, eg: Content-Type: text/javascript; charset=utf-8 Or you could try including the encoding on the script tag (although theoretically that isn't supposed to override the headers): <script type="text/javascript" src="script.js" charset="utf-8"></script> However... that is all a bit too fragile. I think clojurescript needs fixing to be more robust: When you use compile with optimizations, the closure compiler accepts utf-8 input, but outputs everything as us-ascii, using unicode backslash-u escapes to represent unicode characters. This is much safer. But when you compile without optimizations, clojurescript just outputs unicode as utf-8 directly. I think clojurescript should be modified to use us-ascii encoding, and backslash-u escaping like the closure compiler does. -- Dave -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en