'cat -c ' fails with "scanner must be specified" if extension is unknown

[bin]$ cat forge
***ERROR*** Error while executing 'cat'
java.lang.IllegalArgumentException: scanner must be specified
	at org.jboss.forge.addon.text.Highlighter.execute(Highlighter.java:70)
	at org.jboss.forge.addon.text.Highlighter.byFileName(Highlighter.java:63)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.jboss.forge.furnace.proxy.ClassLoaderInterceptor$1.call(ClassLoaderInterceptor.java:87)
	at org.jboss.forge.furnace.util.ClassLoaders.executeIn(ClassLoaders.java:42)
	at org.jboss.forge.furnace.proxy.ClassLoaderInterceptor.invoke(ClassLoaderInterceptor.java:103)
	at org.jboss.forge.addon.text.Highlighter_$$_javassist_317f76ab-a456-4424-a502-27c368fff137.byFileName(Highlighter_$$_javassist_317f76ab-a456-4424-a502-27c368fff137.java)
	at org.jboss.forge.addon.shell.command.CatCommand.execute(CatCommand.java:87)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.jboss.forge.furnace.proxy.ClassLoaderInterceptor$1.call(ClassLoaderInterceptor.java:87)
	at org.jboss.forge.furnace.util.ClassLoaders.executeIn(ClassLoaders.java:42)
	at org.jboss.forge.furnace.proxy.ClassLoaderInterceptor.invoke(ClassLoaderInterceptor.java:103)
	at org.jboss.forge.addon.shell.command.CatCommand_$$_javassist_557b7e88-cb0b-4b84-9b9e-a60f0abbc620.execute(CatCommand_$$_javassist_557b7e88-cb0b-4b84-9b9e-a60f0abbc620.java)
	at org.jboss.forge.addon.ui.impl.controller.SingleCommandControllerImpl.execute(SingleCommandControllerImpl.java:90)
	at org.jboss.forge.addon.shell.aesh.CommandAdapter.execute(CommandAdapter.java:98)
	at org.jboss.forge.addon.shell.aesh.ForgeCommandContainer.executeCommand(ForgeCommandContainer.java:89)
	at org.jboss.aesh.console.AeshConsoleImpl$AeshConsoleCallbackImpl.execute(AeshConsoleImpl.java:311)
	at org.jboss.aesh.console.AeshProcess.run(AeshProcess.java:53)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)