The files for GrammarGer and AllGer (but not Construction, Documentation, Markup)

are edited to allow for glued Prep+DefArt, using new categories NP',Det',Quant',
Predet',DAP'.

The previous NP.s : Case => Str*Str allows parsing

   "in dem Meer" = in_Prep ++ (np.s ! Case).p1
   "im Meer"     = in_Prep ++ (np.s ! Case).p2,

but since only one of the strings of (np.s!Case) is used, the tree
contains a metavariable like ?2 (the grammar is "erasing"). (Similarly, if we used
NP.s : Case => Str and NP.s2 : Case => Str.)

To get rid of the metavariables, we have to choose BY A PARAMETER, say

    NP.s : droppedDefArt? => Case => Str

Using np.a = Ag g n p, the preposition can select between preposition
alone or preposition with definite article (glued or not), via

    Prep = {s : GenNum => Str ; s2 :Str ; c : Case ; isPrep : PrepType }

The combination is done in appPrepNP' and appPrep'. This is
independent of the number of glued Prep+DefArt. But LangGer compiles
now in 200s using 30% memory (without SlashV2VNP). Can AppPrepNP' (and
insertObjNP') be simplified?

src/german/SentenceGer.gf

@@ -45,10 +45,9 @@ concrete SentenceGer of Sentence' = CatGer ** open ResGer, Prelude in {
     SlashPrep cl prep = cl ** {c2 = prep} ;
 
     SlashVS np vs slash =
-		let subj = mkSubj' np PrepNom'
-		in mkClause subj.p1 subj.p2 
-			(insertExtrapos (conjThat ++ slash.s ! Sub) (predV vs)) **
-        			{c2 = slash.c2} ;
+      let subj = mkSubj' np PrepNom' ;
+          vp = (insertExtrapos (conjThat ++ slash.s ! Sub) (predV vs)) 
+      in mkClause subj.p1 subj.p2 vp ** {c2 = slash.c2} ;
 
     EmbedS  s  = {s = conjThat ++ s.s ! Sub} ;  -- no leading comma, if sentence-initial
     EmbedQS qs = {s = qs.s ! QIndir} ;