[developers] minor LKB code changes

[Ann Copestake]

benjamin.waldron at cl.cam.ac.uk said:
> I've just checked in this code, so you can use it too. The parameter is
> *lex-rule-show-one-step*. It defaults to T, but if you set it to NIL you
> will see all morphological realisations. Of course, if there is a black  hole
> in your morphology component you may then get sucked in...

Since this is going to developers, which is a largish list and is archived, I 
need to point out that this is a bit misleading.  If your grammar is the 
current ERG you _will_ get sucked in and I would not like to argue that the 
ERG has a black hole ...  The problem is that the behaviour that has been 
re-enabled via *lex-rule-show-one-step* is uncontrolled when the grammar has a 
high number of lexical rules that apply more than once, which is now the case 
for the ERG's punctuation rules.  There is currently no way of controlling the 
behaviour, so do not use this option unless you are either completely sure 
your grammar does not have a high fanout or are prepared for your session to 
crash!

Ann