I understand your point on questioning whether a grammar is necessary. I have up till now used a line by line method. However, I've dealt with enough bugs now that I'd rather just invest the time in a grammar that will do the job and I believe will be easier to maintain in the future.

I also foresee this syntax changing due to production changes in the not too distant future. I think a grammar will be easier to update than my current parser would have been.

Thanks for looking it over for me in any case :)