Fix prop values for DrDr.

Add plt-responsible props.
Add hash-union to unstable.
Fix doc for compound-paragraph.
Fix unstable/scribblings/util.

svn: r16811

collects/scribblings/scribble/core.scrbl

@@ -522,7 +522,7 @@ The following @tech{style properties} are currently recognized:
 ]}
 
 
-@defstruct[compound-paragraph ([style any/c]
+@defstruct[compound-paragraph ([style style?]
                                [blocks (listof block?)])]{
 
 A @techlink{compound paragraph} has a @tech{style} and a list of

collects/typed-scheme/infer/constraints.ss

@@ -4,7 +4,7 @@
 	 (types convenience utils union subtype)
 	 (rep type-rep)
 	 (utils tc-utils)
-	 unstable/sequence
+	 unstable/sequence unstable/hash
          "signatures.ss" "constraint-structs.ss"
          scheme/match)
 

collects/typed-scheme/infer/dmap.ss

@@ -3,8 +3,7 @@
 (require "../utils/utils.ss" 
 	 "signatures.ss" "constraint-structs.ss"
 	 (utils tc-utils)
-	 unstable/sequence
-         scheme/match)
+	 unstable/sequence unstable/hash scheme/match)
 
 (import constraints^)
 (export dmap^)

collects/typed-scheme/utils/utils.ss

@@ -6,13 +6,12 @@ at least theoretically.
 |#
 
 (require (for-syntax scheme/base syntax/parse scheme/string)
-         scheme/contract mzlib/plt-match scheme/require-syntax scheme/provide-syntax
-         mzlib/struct scheme/unit
-	 scheme/pretty mzlib/pconvert
-	 (except-in syntax/parse id))
+         scheme/contract scheme/match scheme/require-syntax 
+	 scheme/provide-syntax mzlib/struct scheme/unit
+	 scheme/pretty mzlib/pconvert syntax/parse)
 
 ;; to move to unstable
-(provide == hash-union debug reverse-begin)
+(provide == debug reverse-begin)
 
 (provide
  ;; timing
@@ -186,17 +185,6 @@ at least theoretically.
                #'([prop:custom-write pseudo-printer]))
          #f)]))
 
-;; map map (key val val -> val) -> map
-(define (hash-union h1 h2 f)
-  (for/fold ([h* h1])
-    ([(k v2) h2])
-    (let* ([v1 (hash-ref h1 k #f)]
-           [new-val (if v1
-                        (f k v1 v2)
-                        v2)])      
-    (hash-set h* k new-val))))
-
-
 
 ;; turn contracts on and off - off by default for performance.
 (define-for-syntax enable-contracts? #f)

collects/unstable/hash.ss

@@ -0,0 +1,13 @@
+#lang scheme/base
+
+(provide hash-union)
+
+;; map map (key val val -> val) -> map
+(define (hash-union h1 h2 f)
+  (for/fold ([h* h1])
+    ([(k v2) h2])
+    (let* ([v1 (hash-ref h1 k #f)]
+           [new-val (if v1
+                        (f k v1 v2)
+                        v2)])      
+    (hash-set h* k new-val))))

collects/unstable/scribblings/hash.scrbl

@@ -0,0 +1,30 @@
+#lang scribble/doc
+@(require scribble/base
+          scribble/manual
+          scribble/eval
+	  "utils.ss"
+         (for-label unstable/hash
+                    scheme/contract
+                    scheme/base))
+
+@(define the-eval (make-base-eval))
+@(the-eval '(require unstable/hash))
+
+@title[#:tag "hash"]{Hash Tables}
+
+@defmodule[unstable/hash]
+
+@unstable[@author+email["Sam Tobin-Hochstadt" "samth@ccs.neu.edu"]]
+
+@defproc[(hash-union [t1 hash?] [t2 hash?] [combine (any/c any/c any/c . -> . any/c)]) hash?]{
+Produces the combination of @scheme[t1] and @scheme[t2].  If either
+@scheme[t1] or @scheme[t2] has a value for key @scheme[k], then the
+result has the same value for @scheme[k].   If both @scheme[t1] and
+@scheme[t2] have a value for @scheme[k], the result has the value
+@scheme[(combine k (hash-ref t1 k) (hash-ref t2 k))] for @scheme[k].  
+
+@examples[#:eval the-eval
+(hash-union #hash((a . 5) (b . 0)) #hash((d . 12) (c . 1)) (lambda (k v1 v2) v1))
+(hash-union #hash((a . 5) (b . 0)) #hash((a . 12) (c . 1)) (lambda (k v1 v2) v1))
+]
+}

collects/unstable/scribblings/unstable.scrbl

@@ -85,6 +85,7 @@ Keep documentation and tests up to date.
 @include-section["find.scrbl"]
 @include-section["class-iop.scrbl"]
 @include-section["sequence.scrbl"]
+@include-section["hash.scrbl"]
 
 @;{--------}
 

collects/unstable/scribblings/utils.ss

@@ -1,13 +1,15 @@
 #lang at-exp scheme/base
 
-(require scribble/base scribble/manual)
+(require scribble/base scribble/manual scribble/core)
 
 (provide unstable addition)
 (define (unstable . authors)
-  (begin
-    (apply author authors)
-    @para{This library is @emph{unstable}; compatibility will not be maintained.
-	       See @secref{unstable} for more information.}))
+  (make-compound-paragraph 
+   plain
+   (list (apply author authors)
+	 @para{This library is @emph{unstable}
+	       ; compatibility will not be maintained.
+	       See @secref{unstable} for more information.})))
 
 (define (addition name)
   @margin-note{The subsequent bindings were added by @|name|.})