Null Production in grammar?

Correct me if I'm wrong but can't you just enclose the alternation with a [ ] block, which means optional? Then you don't need the null alternation option.

I tried that, get an error complaining about an empty stack.

Regards

Vincent.

We'd have to debug it to see what was causing that. If you can, put together a simple grammar that shows this happening and email it over. Thanks!

I was wrong about the error, something else must have caused it. With these non terminals

<NonTerminal Key="NL">
<Production>
<![CDATA[
'NewLine'
]]>
</Production>
</NonTerminal>
<NonTerminal Key="NLOpt">
<Production>
<![CDATA[
"NL"
| []
]]>
</Production>
</NonTerminal>

I get the error :

"No production data was located in the 'NLOpt' production near:
| []

Regards

Vincent.

Correct, an empty [] is not permitted. The [] must have contents. What you should be doing instead is make the production like this:
[ "NL" ]

That means NL is optional.

Ah Yes, that makes sense, thanks. That parses fine and it looks like the code produced will work as expected.

Regards

Vincent.