[antlr-interest] No errors output by v4 daily build?

[Peter Boughton]

I have downloaded the daily build ( antlr-4.0ea-complete.jar ) and
execute it on the command line, and it doesn't output anything.

If I give it a working grammar, it will generate the relevant files,
however if the grammar has any errors (or I use incorrect command line
args), it does nothing.

Running on Windows 7 Ultimate 64-bit and Java SE 1.6.0_21 64-bit

Any idea how I get it to tell me what is stopping it from generating the files?