Decided not to escape. :)

pkg/files/curpath.go

@@ -1,7 +1,6 @@
 package files
 
 import (
-	"net/url"
 	"strings"
 )
 
@@ -13,7 +12,7 @@ func CurrentPath(path string) (curPath string) {
 		sb.WriteString("/<a href=\"/")
 		sb.WriteString(strings.Join(parts[:i+1], "/"))
 		sb.WriteString("/\">")
-		sb.WriteString(url.PathEscape(part))
+		sb.WriteString(part)
 		sb.WriteString("</a>")
 		curPath += sb.String()
 	}