It looks like `superstatic` does not parse out URL-encoded values in URL paths: ```console $ superstatic & $ echo foobar > "foo:bar.txt" $ curl 'localhost:3474/foo:bar.txt' foobar $ curl 'localhost:3474/foo%3Abar.txt' <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Error</title> </head> <body> <pre>Cannot GET /foo%3Abar.txt</pre> </body> </html> ``` This also then affects `firebase serve`.