Re: [lojban] On parser extensions.

[John Cowan <cowan@ccil.org>]

Robin Lee Powell scripsit:

> xorxes pointed out that "pabi'ipazeva'e" is currently not grammatical,
> whether you shove all the words together or not.  :-)  The reason seems
> to be that the current parsers don't wait long enough, and try to
> interpret things as "le pa bi'i <something>".

The official parser's preparser crawls forward when it sees "pa" on the
assumption that this might be a PA+MOI string, but when it sees "bi'i"
it gives up, because "bi'i" isn't PA.

> My questions are:
> 
> 1.  Did any of you have that kind of trouble parsing this sentence by
> hand?

Yes, although that was exacerbated by not remembering what selma'o "va'e"
belongs to.

> 2.  Does this count as a change to the language, or merely cleaning up
> LR(1) issues?[1]

It would be a change, possibly a worthwhile change but definitely
a change; the separation between PA+MOI and arbitrary mex followed
by MOI was made *necessary* by LALR(1) restrictions, but now subsists
independently of them.  This would be analogous to allowing ".i fi'o broda
brode co brode brodi be lo brodu bei la brod. bo" as a sentence connector.

But anyway, there is now a standard way to say mex+MOI, namely "me li
pabi'ipazeboi va'e".  Either boi or me'u is required here to keep the
preparser quiet.

-- 
MEET US AT POINT ORANGE AT MIDNIGHT BRING YOUR DUCK OR PREPARE TO FACE WUGGUMS
John Cowan   http://www.reutershealth.com   jcowan@reutershealth.com


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