diff --git a/collects/scribblings/reference/bytes.scrbl b/collects/scribblings/reference/bytes.scrbl
index 9eee201572..7618d306af 100644
--- a/collects/scribblings/reference/bytes.scrbl
+++ b/collects/scribblings/reference/bytes.scrbl
@@ -13,7 +13,8 @@ A @deftech{byte string} is a fixed-length array of bytes. A
 @defterm{mutable} or @defterm{immutable}. When an immutable byte
 string is provided to a procedure like @racket[bytes-set!], the
 @exnraise[exn:fail:contract]. Byte-string constants generated by the
-default reader (see @secref["parse-string"]) are immutable.
+default reader (see @secref["parse-string"]) are immutable 
+and @tech{interned}.
 
 Two byte strings are @racket[equal?] when they have the same length
 and contain the same sequence of bytes.
diff --git a/collects/scribblings/reference/chars.scrbl b/collects/scribblings/reference/chars.scrbl
index 0e183a9bc1..8756ad410d 100644
--- a/collects/scribblings/reference/chars.scrbl
+++ b/collects/scribblings/reference/chars.scrbl
@@ -16,7 +16,8 @@ characters whose values range from @racketvalfont{#x0} to
 
 Two characters are @racket[eqv?] if they correspond to the same scalar
 value. For each scalar value less than 256, character values that are
-@racket[eqv?] are also @racket[eq?].
+@racket[eqv?] are also @racket[eq?]. Characters produced by the default
+reader are @tech{interned}.
 
 @see-read-print["character"]{characters}
 
diff --git a/collects/scribblings/reference/data.scrbl b/collects/scribblings/reference/data.scrbl
index 2f0b7884b0..8271fa491e 100644
--- a/collects/scribblings/reference/data.scrbl
+++ b/collects/scribblings/reference/data.scrbl
@@ -24,105 +24,7 @@ manipulating instances of the datatype.
 @include-section["chars.scrbl"]
 
 @; ------------------------------------------------------------
-@section[#:tag "symbols"]{Symbols}
-
-@guideintro["symbols"]{symbols}
-
-@section-index["symbols" "generating"]
-@section-index["symbols" "unique"]
-
-A @deftech{symbol} is like an immutable string, but symbols are
-normally @deftech{interned}, so that two symbols with the same
-character content are normally @racket[eq?]. All symbols produced by
-the default reader (see @secref["parse-symbol"]) are interned.
-
-The two procedures @racket[string->uninterned-symbol] and
-@racket[gensym] generate @deftech{uninterned} symbols, i.e., symbols
-that are not @racket[eq?], @racket[eqv?], or @racket[equal?] to any
-other symbol, although they may print the same as other symbols.
-
-The procedure @racket[string->unreadable-symbol] returns an
-@deftech{unreadable symbol} that is partially interned.  The default
-reader (see @secref["parse-symbol"]) never produces a unreadable
-symbol, but two calls to @racket[string->unreadable-symbol] with
-@racket[equal?] strings produce @racket[eq?] results. An unreadable
-symbol can print the same as an interned or uninterned
-symbol. Unreadable symbols are useful in expansion and
-compilation to avoid collisions with symbols that appear in the
-source; they are usually not generated directly, but they can appear
-in the result of functions like @racket[identifier-binding].
-
-Interned and unreadable symbols are only weakly held by the internal
-symbol table. This weakness can never affect the result of an
-@racket[eq?], @racket[eqv?], or @racket[equal?] test, but a symbol may
-disappear when placed into a weak box (see @secref["weakbox"]) used as
-the key in a weak @tech{hash table} (see @secref["hashtables"]), or
-used as an ephemeron key (see @secref["ephemerons"]).
-
-@see-read-print["symbol"]{symbols}
-
-@defproc[(symbol? [v any/c]) boolean?]{Returns @racket[#t] if @racket[v] is
- a symbol, @racket[#f] otherwise.
-
-@examples[(symbol? 'Apple) (symbol? 10)]}
-
-
-@defproc[(symbol-interned? [sym symbol?]) boolean?]{Returns @racket[#t] if @racket[sym] is
- @tech{interned}, @racket[#f] otherwise.
-
-@examples[(symbol-interned? 'Apple)
-          (symbol-interned? (gensym))
-          (symbol-interned? (string->unreadable-symbol "Apple"))]}
-
-@defproc[(symbol-unreadable? [sym symbol?]) boolean?]{Returns @racket[#t] if @racket[sym] is
- an @tech{unreadable symbol}, @racket[#f] otherwise.
-
-@examples[(symbol-unreadable? 'Apple)
-          (symbol-unreadable? (gensym))
-          (symbol-unreadable? (string->unreadable-symbol "Apple"))]}
-
-@defproc[(symbol->string [sym symbol?]) string?]{Returns a freshly
- allocated mutable string whose characters are the same as in
- @racket[sym].
-
-@examples[(symbol->string 'Apple)]}
-
-
-@defproc[(string->symbol [str string?]) symbol?]{Returns an
- @tech{interned} symbol whose characters are the same as in
- @racket[str].
-
-@examples[(string->symbol "Apple") (string->symbol "1")]}
-
-
-@defproc[(string->uninterned-symbol [str string?]) symbol?]{Like
- @racket[(string->symbol str)], but the resulting symbol is a new
- @tech{uninterned} symbol. Calling @racket[string->uninterned-symbol]
- twice with the same @racket[str] returns two distinct symbols.
-
-@examples[(string->uninterned-symbol "Apple")
-          (eq? 'a (string->uninterned-symbol "a"))
-          (eq? (string->uninterned-symbol "a")
-               (string->uninterned-symbol "a"))]}
-
-
-@defproc[(string->unreadable-symbol [str string?]) symbol?]{Like
- @racket[(string->symbol str)], but the resulting symbol is a new
- @tech{unreadable symbol}. Calling @racket[string->unreadable-symbol]
- twice with equivalent @racket[str]s returns the same symbol, but
- @racket[read] never produces the symbol.
-
-@examples[(string->unreadable-symbol "Apple")
-          (eq? 'a (string->unreadable-symbol "a"))
-          (eq? (string->unreadable-symbol "a")
-               (string->unreadable-symbol "a"))]}
-
-
-@defproc[(gensym [base (or/c string? symbol?) "g"]) symbol?]{Returns a
- new @tech{uninterned} symbol with an automatically-generated name. The
- optional @racket[base] argument is a prefix symbol or string.}
-
-@examples[(gensym "apple")]
+@include-section["symbols.scrbl"]
 
 @; ------------------------------------------------------------
 @include-section["regexps.scrbl"]
@@ -138,7 +40,8 @@ identifier. Furthermore, a keyword by itself is not a valid
 expression, though a keyword can be @racket[quote]d to form an
 expression that produces the symbol.
 
-Two keywords are @racket[eq?] if and only if they print the same.
+Two keywords are @racket[eq?] if and only if they print the same
+(i.e., keywords are always @tech{interned}).
 
 Like symbols, keywords are only weakly held by the internal keyword
 table; see @secref["symbols"] for more information.
diff --git a/collects/scribblings/reference/numbers.scrbl b/collects/scribblings/reference/numbers.scrbl
index a5ac42d59c..fb56e61a06 100644
--- a/collects/scribblings/reference/numbers.scrbl
+++ b/collects/scribblings/reference/numbers.scrbl
@@ -80,7 +80,9 @@ with fixnums. See also the @racketmodname[racket/fixnum] module, below.
 
 Two fixnums that are @racket[=] are also the same
 according to @racket[eq?]. Otherwise, the result of @racket[eq?]
-applied to two numbers is undefined.
+applied to two numbers is undefined, except that numbers produced
+by the default reader are @tech{interned} and therefore @racket[eq?]
+when they are @racket[eqv?].
 
 Two numbers are @racket[eqv?] when they are both inexact with the same precision or both
 exact, and when they are @racket[=] (except for @racket[+nan.0], @racket[+nan.f],
diff --git a/collects/scribblings/reference/read.scrbl b/collects/scribblings/reference/read.scrbl
index c8b903f444..c2760589cd 100644
--- a/collects/scribblings/reference/read.scrbl
+++ b/collects/scribblings/reference/read.scrbl
@@ -324,3 +324,34 @@ except that special-comment values (see
 
 The default port read handler itself can be customized through a
 readtable; see @secref["readtables"] for more information.}
+
+
+@defproc[(read-intern-literal [v any/c]) any/c]{
+
+Converts some values to be consistent with an @tech{interned} result
+produced by the default reader.
+
+If @racket[v] is a @tech{number}, @tech{character}, @tech{string},
+@tech{byte string}, or @tech{regular expression}, then the result is a
+value that is @racket[equal?] to @racket[v] and @racket[eq?] to a
+potential result of the default reader. (Note that mutable strings and
+byte strings are @tech{interned} as immutable strings and byte
+strings.)
+
+If @racket[v] is an @tech{uninterned} or an @tech{unreadable symbol},
+the result is still @racket[v], since an @tech{interned} symbol would
+not be @racket[equal?] to @racket[v].
+
+The conversion process does not traverse compound values. For example,
+if @racket[v] is a @tech{pair} containing strings, then the strings
+within @racket[v] are not @tech{interned}.
+
+If @racket[_v1] and @racket[_v2] are @racket[equal?] but not
+@racket[eq?], then it is possible that @racket[(read-intern-literal
+_v1)] will return @racket[_v1] and---sometime after @racket[_v1]
+becomes unreachable as determined by the garbage collector (see
+@secref["gc-model"])---@racket[(read-intern-literal _v2)] can still
+return @racket[_v2]. In other words, @racket[read-intern-literal]
+may adopt a given value as an @tech{interned} representative, but
+if a former representative becomes otherwise unreachable, then
+@racket[read-intern-literal] may adopt a new representative.}
diff --git a/collects/scribblings/reference/reader.scrbl b/collects/scribblings/reference/reader.scrbl
index 22dc2fc2e3..fc52347b01 100644
--- a/collects/scribblings/reference/reader.scrbl
+++ b/collects/scribblings/reference/reader.scrbl
@@ -38,6 +38,16 @@ Reading is defined in terms of Unicode characters; see
 @secref["ports"] for information on how a byte stream is converted
 to a character stream.
 
+Symbols, keywords, strings, byte strings, regexps, characters, and numbers
+produced by the reader are @deftech{interned}, which means that such
+values in the result of @racket[read] or @racket[read-syntax] are
+always @racket[eq?] when they are @racket[equal?] (whether from the
+same call or different calls to @racket[read] or
+@racket[read-syntax]). Sending an @tech{interned} value across a
+@tech{place channel} does not necessarily produce an @tech{interned}
+value at the receiving @tech{place}. See also
+@racket[read-intern-literal] and @racket[datum->syntax].
+
 @;------------------------------------------------------------------------
 @section[#:tag "default-readtable-dispatch"]{Delimiters and Dispatch}
 
@@ -159,11 +169,11 @@ on the next character or characters in the input stream as follows:
 
 A sequence that does not start with a delimiter or @litchar{#} is
 parsed as either a @tech{symbol} or a @tech{number} (see
-@secref["parse-number"]), except that @litchar{.} by itself is
-never parsed as a symbol or character (unless the
-@racket[read-accept-dot] parameter is set to @racket[#f]). A
-@as-index{@litchar{#%}} also starts a symbol. A successful number
-parse takes precedence over a symbol parse.
+@secref["parse-number"]), except that @litchar{.} by itself is never
+parsed as a symbol or character (unless the @racket[read-accept-dot]
+parameter is set to @racket[#f]). A @as-index{@litchar{#%}} also
+starts a symbol. The resulting symbol is @tech{interned}. A successful
+number parse takes precedence over a symbol parse.
 
 @index["case-sensitivity"]{@index["case-insensitive"]{When}} the
 @racket[read-case-sensitive] @tech{parameter} is set to @racket[#f],
@@ -198,7 +208,7 @@ case-sensitive mode.
 A sequence that does not start with a delimiter is parsed as a @tech{number}
 when it matches the following grammar case-insenstively for
 @nonterm{number@sub{10}} (decimal), where @metavar{n} is a
-meta-meta-variable in the grammar.
+meta-meta-variable in the grammar. The resulting number is @tech{interned}.
 
 A number is optionally prefixed by an exactness specifier,
 @as-index{@litchar{#e}} (exact) or @as-index{@litchar{#i}} (inexact),
@@ -383,7 +393,7 @@ exception, instead of the infix conversion.
 When the reader encounters @as-index{@litchar{"}}, it begins parsing
 characters to form a @tech{string}. The string continues until it is
 terminated by another @litchar{"} (that is not escaped by
-@litchar{\}).
+@litchar{\}). The resulting string is @tech{interned}.
 
 Within a string sequence, the following escape sequences are
  recognized:
@@ -455,7 +465,8 @@ constant, the @exnraise[exn:fail:read].
 A string constant preceded by @litchar{#} is parsed as a
 @tech{byte string}. (That is, @as-index{@litchar{#"}} starts a byte-string
 literal.) See @secref["bytestrings"] for information on byte
-strings. Byte-string constants support the same escape sequences as
+strings. The resulting byte string is @tech{interned}.
+Byte-string constants support the same escape sequences as
 character strings, except @litchar{\u} and @litchar{\U}.
 
 When the reader encounters @as-index{@litchar{#<<}}, it starts parsing a
@@ -712,7 +723,8 @@ one of the following forms:
 A @as-index{@litchar{#:}} starts a @tech{keyword}. The parsing of a keyword
 after the @litchar{#:} is the same as for a symbol, including
 case-folding in case-insensitive mode, except that the part after
-@litchar{#:} is never parsed as a number.
+@litchar{#:} is never parsed as a number. The resulting keyword is 
+@tech{interned}. 
 
 @reader-examples[
 "#:Apple"
@@ -728,7 +740,7 @@ A @as-index{@litchar{#rx}} or @as-index{@litchar{#px}} starts a
 expression as would be constructed by @racket[regexp], @litchar{#px}
 as constructed by @racket[pregexp], @litchar{#rx#} as constructed by
 @racket[byte-regexp], and @litchar{#px#} as constructed by
-@racket[byte-pregexp].
+@racket[byte-pregexp]. The resulting regular expression is @tech{interned}. 
 
 @reader-examples[
 "#rx\".*\""
diff --git a/collects/scribblings/reference/regexps.scrbl b/collects/scribblings/reference/regexps.scrbl
index ed00b16b5d..09fcd60198 100644
--- a/collects/scribblings/reference/regexps.scrbl
+++ b/collects/scribblings/reference/regexps.scrbl
@@ -35,7 +35,7 @@
 @guideintro["regexp"]{regular expressions}
 
 @deftech{Regular expressions} are specified as strings or byte
-strings, using the same pattern language as the Unix utility
+strings, using the same pattern language as either the Unix utility
 @exec{egrep} or Perl. A string-specified pattern produces a character
 regexp matcher, and a byte-string pattern produces a byte regexp
 matcher. If a character regexp is used with a byte string or input
@@ -50,12 +50,15 @@ regexp value using one syntax of regular expressions that is most
 compatible to @exec{egrep}. The @racket[pregexp] and
 @racket[byte-pregexp] procedures produce a regexp value using a
 slightly different syntax of regular expressions that is more
-compatible with Perl.  In addition, Racket constants written with
-@litchar{#rx} or @litchar{#px} (see @secref["reader"]) produce
-compiled regexp values.
+compatible with Perl.
+
+Two regular expressions are @racket[equal?] if they have the same
+source, use the same pattern language, and are both character regexps
+or both byte regexps.
 
 A literal or printed regular expression starts with @litchar{#rx} or
-@litchar{#px}. @see-read-print["regexp"]{regular expressions}
+@litchar{#px}. @see-read-print["regexp"]{regular expressions} Regular
+expressions produced by the default reader are @tech{interned}.
 
 The internal size of a regexp value is limited to 32 kilobytes; this
 limit roughly corresponds to a source string with 32,000 literal
diff --git a/collects/scribblings/reference/strings.scrbl b/collects/scribblings/reference/strings.scrbl
index 1cd62544da..6bc31a51aa 100644
--- a/collects/scribblings/reference/strings.scrbl
+++ b/collects/scribblings/reference/strings.scrbl
@@ -13,7 +13,7 @@ A @deftech{string} is a fixed-length array of
 procedure like @racket[string-set!], the
 @exnraise[exn:fail:contract]. String constants generated by the
 default reader (see @secref["parse-string"]) are
-immutable.
+immutable and @tech{interned}.
 
 Two strings are @racket[equal?] when they have the same length and
 contain the same sequence of characters.
diff --git a/collects/scribblings/reference/stx-ops.scrbl b/collects/scribblings/reference/stx-ops.scrbl
index 93d75003c1..eb94f496f1 100644
--- a/collects/scribblings/reference/stx-ops.scrbl
+++ b/collects/scribblings/reference/stx-ops.scrbl
@@ -114,7 +114,10 @@ leaving nested syntax structure (if any) in place.  The result of
 
        @item{an immutable @tech{prefab} structure containing @tech{syntax object}s}
 
-       @item{some other kind of datum---usually a number, boolean, or string}
+       @item{some other kind of datum---usually a number, boolean, or
+             string---that is @tech{interned} when
+             @racket[read-intern-literal] would convert the
+             value}
 
     ]
 
@@ -185,7 +188,8 @@ boxes. For any kind of value other than a
 pair, vector, box, immutable @tech{hash table}, immutable
 @tech{prefab} structure, or @tech{syntax object}, conversion means
 wrapping the value with lexical information, source-location
-information, and properties.
+information, and properties after the value is @tech{interned}
+via @racket[read-intern-literal].
 
 Converted objects in @racket[v] are given the lexical context
 information of @racket[ctxt] and the source-location information of
diff --git a/collects/scribblings/reference/symbols.scrbl b/collects/scribblings/reference/symbols.scrbl
new file mode 100644
index 0000000000..b9ff19dff3
--- /dev/null
+++ b/collects/scribblings/reference/symbols.scrbl
@@ -0,0 +1,102 @@
+#lang scribble/doc
+@(require "mz.rkt")
+
+@title[#:tag "symbols"]{Symbols}
+
+@guideintro["symbols"]{symbols}
+
+@section-index["symbols" "generating"]
+@section-index["symbols" "unique"]
+
+A @deftech{symbol} is like an immutable string, but symbols are
+normally @tech{interned}, so that two symbols with the same
+character content are normally @racket[eq?]. All symbols produced by
+the default reader (see @secref["parse-symbol"]) are @tech{interned}.
+
+The two procedures @racket[string->uninterned-symbol] and
+@racket[gensym] generate @deftech{uninterned} symbols, i.e., symbols
+that are not @racket[eq?], @racket[eqv?], or @racket[equal?] to any
+other symbol, although they may print the same as other symbols.
+
+The procedure @racket[string->unreadable-symbol] returns an
+@deftech{unreadable symbol} that is partially interned.  The default
+reader (see @secref["parse-symbol"]) never produces a unreadable
+symbol, but two calls to @racket[string->unreadable-symbol] with
+@racket[equal?] strings produce @racket[eq?] results. An unreadable
+symbol can print the same as an interned or uninterned
+symbol. Unreadable symbols are useful in expansion and
+compilation to avoid collisions with symbols that appear in the
+source; they are usually not generated directly, but they can appear
+in the result of functions like @racket[identifier-binding].
+
+Interned and unreadable symbols are only weakly held by the internal
+symbol table. This weakness can never affect the result of an
+@racket[eq?], @racket[eqv?], or @racket[equal?] test, but a symbol may
+disappear when placed into a weak box (see @secref["weakbox"]) used as
+the key in a weak @tech{hash table} (see @secref["hashtables"]), or
+used as an ephemeron key (see @secref["ephemerons"]).
+
+@see-read-print["symbol"]{symbols}
+
+@defproc[(symbol? [v any/c]) boolean?]{Returns @racket[#t] if @racket[v] is
+ a symbol, @racket[#f] otherwise.
+
+@examples[(symbol? 'Apple) (symbol? 10)]}
+
+
+@defproc[(symbol-interned? [sym symbol?]) boolean?]{Returns @racket[#t] if @racket[sym] is
+ @tech{interned}, @racket[#f] otherwise.
+
+@examples[(symbol-interned? 'Apple)
+          (symbol-interned? (gensym))
+          (symbol-interned? (string->unreadable-symbol "Apple"))]}
+
+@defproc[(symbol-unreadable? [sym symbol?]) boolean?]{Returns @racket[#t] if @racket[sym] is
+ an @tech{unreadable symbol}, @racket[#f] otherwise.
+
+@examples[(symbol-unreadable? 'Apple)
+          (symbol-unreadable? (gensym))
+          (symbol-unreadable? (string->unreadable-symbol "Apple"))]}
+
+@defproc[(symbol->string [sym symbol?]) string?]{Returns a freshly
+ allocated mutable string whose characters are the same as in
+ @racket[sym].
+
+@examples[(symbol->string 'Apple)]}
+
+
+@defproc[(string->symbol [str string?]) symbol?]{Returns an
+ @tech{interned} symbol whose characters are the same as in
+ @racket[str].
+
+@examples[(string->symbol "Apple") (string->symbol "1")]}
+
+
+@defproc[(string->uninterned-symbol [str string?]) symbol?]{Like
+ @racket[(string->symbol str)], but the resulting symbol is a new
+ @tech{uninterned} symbol. Calling @racket[string->uninterned-symbol]
+ twice with the same @racket[str] returns two distinct symbols.
+
+@examples[(string->uninterned-symbol "Apple")
+          (eq? 'a (string->uninterned-symbol "a"))
+          (eq? (string->uninterned-symbol "a")
+               (string->uninterned-symbol "a"))]}
+
+
+@defproc[(string->unreadable-symbol [str string?]) symbol?]{Like
+ @racket[(string->symbol str)], but the resulting symbol is a new
+ @tech{unreadable symbol}. Calling @racket[string->unreadable-symbol]
+ twice with equivalent @racket[str]s returns the same symbol, but
+ @racket[read] never produces the symbol.
+
+@examples[(string->unreadable-symbol "Apple")
+          (eq? 'a (string->unreadable-symbol "a"))
+          (eq? (string->unreadable-symbol "a")
+               (string->unreadable-symbol "a"))]}
+
+
+@defproc[(gensym [base (or/c string? symbol?) "g"]) symbol?]{Returns a
+ new @tech{uninterned} symbol with an automatically-generated name. The
+ optional @racket[base] argument is a prefix symbol or string.}
+
+@examples[(gensym "apple")]
diff --git a/collects/tests/racket/basic.rktl b/collects/tests/racket/basic.rktl
index 52ce51c3cf..11a7556e11 100644
--- a/collects/tests/racket/basic.rktl
+++ b/collects/tests/racket/basic.rktl
@@ -272,8 +272,11 @@
 (test-mem memv 'memv)
 (test-mem member 'member)
 
-(test #f memq "apple" '("apple"))
-(test #f memv "apple" '("apple"))
+(test '("apple") memq "apple" '("apple")) ; literals are interned
+(test '(#"apple") memq #"apple" '(#"apple")) ; literals are interned
+(test #f memq (list->string (string->list "apple")) '("apple"))
+(test #f memq (list->bytes (bytes->list #"apple")) '(#"apple"))
+(test #f memv (list->string (string->list "apple")) '("apple"))
 (test '("apple") member "apple" '("apple"))
 
 ; (test #f memq 1/2 '(1/2)) ; rationals are immutable and we may want to optimize
@@ -2364,7 +2367,8 @@
 (test '((1 . 2)) hash-map im-t cons)
 (test 2 hash-ref im-t 1)
 (define im-t (make-immutable-hasheq '(("hello" . 2))))
-(test 'none hash-ref im-t "hello" (lambda () 'none))
+(test 2 hash-ref im-t "hello" (lambda () 'none)) ; literals interned
+(test 'none hash-ref im-t (list->string (string->list "hello")) (lambda () 'none))
 (define im-t (make-immutable-hash '(("hello" . 2))))
 (test 2 hash-ref im-t "hello" (lambda () 'none))
 (test #f hash-eq? im-t)
diff --git a/collects/tests/racket/read.rktl b/collects/tests/racket/read.rktl
index 58b83d611f..764cfc4d49 100644
--- a/collects/tests/racket/read.rktl
+++ b/collects/tests/racket/read.rktl
@@ -352,16 +352,18 @@
 (test-ht (readstr "#hasheq((1 . 2))") 1 #t 1 2)
 (test-ht (readstr "#hasheqv((1 . 2))") 1 #f 1 2)
 (test-ht (readstr "#hash((\"apple\" . 1))") 1 #f "apple" 1)
-(test-ht (readstr "#hasheq((\"apple\" . 1))") 1 #t "apple" #f)
-(test-ht (readstr "#hasheqv((\"apple\" . 1))") 1 #f "apple" #f)
-(test-ht (readstr "#hash((\"apple\" . 1) (\"apple\" . 10))") 1 #f "apple" 10)
-(test-ht (readstr "#hasheq((\"apple\" . 1) (\"apple\" . 10))") 2 #t "apple" #f)
-(test-ht (readstr "#hasheqv((\"apple\" . 1) (\"apple\" . 10))") 2 #f "apple" #f)
+(test-ht (readstr "#hash((\"apple\" . 1))") 1 #f (list->string (string->list "apple")) 1)
+(test-ht (readstr "#hasheq((\"apple\" . 1))") 1 #t "apple" 1)
+(test-ht (readstr "#hasheq((\"apple\" . 1))") 1 #t (list->string (string->list "apple")) #f)
+(test-ht (readstr "#hasheqv((\"apple\" . 1))") 1 #f (list->string (string->list "apple")) #f)
+(test-ht (readstr "#hash((#s(s \"apple\") . 1) (#s(s \"apple\") . 10))") 1 #f '#s(s "apple") 10)
+(test-ht (readstr "#hasheq((#s(s \"apple\") . 1) (#s(s \"apple\") . 10))") 2 #t '#s(s "apple") #f)
+(test-ht (readstr "#hasheqv((#s(s \"apple\") . 1) (#s(s \"apple\") . 10))") 2 #f #s(s "apple") #f)
 (test-ht (readstr "#hash((apple . 1) (apple . 10))") 1 #f 'apple 10)
 (test-ht (readstr "#hasheq((apple . 1) (apple . 10))") 1 #t 'apple 10)
 (test-ht (readstr "#hasheqv((apple . 1) (apple . 10))") 1 #f 'apple 10)
-(test-ht (readstr "#hasheq((#0=\"apple\" . 1) (#0# . 10))") 1 #t "apple" #f)
-(test-ht (readstr "#hash((#0=\"apple\" . 1) (\"banana\" . #0#))") 2 #f "banana" "apple")
+(test-ht (readstr "#hasheq((#0=\"apple\" . 1) (#0# . 10))") 1 #t (list->string (string->list "apple")) #f)
+(test-ht (readstr "#hash((#0=\"apple\" . 1) (\"banana\" . #0#))") 2 #f "banana" (list->string (string->list "apple")))
 (test-ht (readstr "#hash((a . 1) (b . 2) (c . 3) (e . 4) (f . 5) (g . 6) (h . 7) (i . 8))") 8 #f 'f 5)
 (let ([t (readstr "#0=#hash((\"apple\" . #0#))")])
   (test-ht t 1 #f "apple" t))
@@ -372,6 +374,13 @@
 (let ([t (readstr "#0=#hash((#0# . 17))")])
   ;; Don't look for t, because that's a hash on a circular object!
   (test-ht t 1 #f 'none #f))
+;; check intern and comparison of regexps:
+(test-ht (readstr "#hasheq((#rx\"apple\" . 1))") 1 #t #rx"apple" 1)
+(test-ht (readstr "#hasheq((#rx\"apple\" . 1))") 1 #t #px"apple" #f)
+(test-ht (readstr "#hasheq((#rx#\"apple\" . 1))") 1 #t #rx#"apple" 1)
+(test-ht (readstr "#hasheq((#rx#\"apple\" . 1))") 1 #t #rx"apple" #f)
+(test-ht (readstr "#hasheq((#rx#\"apple\" . 1))") 1 #t #px#"apple" #f)
+(test-ht (readstr "#hasheq((#px#\"apple\" . 1))") 1 #t #px#"apple" 1)
 
 (define (test-write-ht writer t . strings)
   (let ([o (open-output-string)])
diff --git a/collects/tests/racket/vector.rktl b/collects/tests/racket/vector.rktl
index 945c4c893c..d6af8011ee 100644
--- a/collects/tests/racket/vector.rktl
+++ b/collects/tests/racket/vector.rktl
@@ -201,9 +201,9 @@
   (test #f vector-member 7 #(0 1 2))
   (test 1 vector-memq 'x #(7 x 2))
   (test 1 vector-memv 'x #(7 x 2))
-  (test #f vector-memq 1000000000000000000000 #(7 1000000000000000000000 2))
-  (test 1 vector-memv 1000000000000000000000 #(7 1000000000000000000000 2))
-  (test 1 vector-member 1000000000000000000000 #(7 1000000000000000000000 2))
+  (test #f vector-memq (* 10 100000000000000000000) #(7 1000000000000000000000 2))
+  (test 1 vector-memv (* 10 100000000000000000000) #(7 1000000000000000000000 2))
+  (test 1 vector-member (* 10 100000000000000000000) #(7 1000000000000000000000 2))
   (test #f vector-memq (cons 1 2) (vector 7 (cons 1 2) 2))
   (test #f vector-memv (cons 1 2) (vector 7 (cons 1 2) 2))
   (test 1 vector-member (cons 1 2) (vector 7 (cons 1 2) 2))
diff --git a/doc/release-notes/racket/HISTORY.txt b/doc/release-notes/racket/HISTORY.txt
index 4c720db7e9..fbb2f41a3a 100644
--- a/doc/release-notes/racket/HISTORY.txt
+++ b/doc/release-notes/racket/HISTORY.txt
@@ -1,3 +1,9 @@
+Version 5.2.0.4
+Regexps are `equal?' when they have the same source [byte] string
+ and mode
+Numbers, characters, strings, byte strings, and regexps are interned by
+ read and datum->syntax
+
 Version 5.2.0.3
 Added module-predefined?
 Changed the raacket -k command-line flag
diff --git a/src/racket/include/schthread.h b/src/racket/include/schthread.h
index 26d2002bd5..3b48e16413 100644
--- a/src/racket/include/schthread.h
+++ b/src/racket/include/schthread.h
@@ -328,6 +328,8 @@ typedef struct Thread_Local_Variables {
   struct Scheme_Hash_Table *place_local_symbol_table_;
   struct Scheme_Hash_Table *place_local_keyword_table_;
   struct Scheme_Hash_Table *place_local_parallel_symbol_table_;
+  struct Scheme_Bucket_Table *literal_string_table_;
+  struct Scheme_Bucket_Table *literal_number_table_;
   struct FFI_Sync_Queue *ffi_sync_queue_;
   struct Scheme_GC_Pre_Post_Callback_Desc *gc_prepost_callback_descs_;
   struct Scheme_Hash_Table *place_local_misc_table_;
@@ -674,6 +676,8 @@ XFORM_GC_VARIABLE_STACK_THROUGH_THREAD_LOCAL;
 #define place_local_symbol_table XOA (scheme_get_thread_local_variables()->place_local_symbol_table_)
 #define place_local_keyword_table XOA (scheme_get_thread_local_variables()->place_local_keyword_table_)
 #define place_local_parallel_symbol_table XOA (scheme_get_thread_local_variables()->place_local_parallel_symbol_table_)
+#define literal_string_table XOA (scheme_get_thread_local_variables()->literal_string_table_)
+#define literal_number_table XOA (scheme_get_thread_local_variables()->literal_number_table_)
 #define ffi_sync_queue XOA (scheme_get_thread_local_variables()->ffi_sync_queue_)
 #define gc_prepost_callback_descs XOA (scheme_get_thread_local_variables()->gc_prepost_callback_descs_)
 #define place_local_misc_table XOA (scheme_get_thread_local_variables()->place_local_misc_table_)
diff --git a/src/racket/src/bool.c b/src/racket/src/bool.c
index 04eed5b246..ef50c01326 100644
--- a/src/racket/src/bool.c
+++ b/src/racket/src/bool.c
@@ -485,6 +485,14 @@ int is_equal (Scheme_Object *obj1, Scheme_Object *obj2, Equal_Info *eql)
     l2 = SCHEME_CHAR_STRTAG_VAL(obj2);
     return ((l1 == l2)
 	    && !memcmp(SCHEME_CHAR_STR_VAL(obj1), SCHEME_CHAR_STR_VAL(obj2), l1 * sizeof(mzchar)));
+  } else if (t1 == scheme_regexp_type) {
+    if (scheme_regexp_is_byte(obj1) != scheme_regexp_is_byte(obj2))
+      return 0;
+    if (scheme_regexp_is_pregexp(obj1) != scheme_regexp_is_pregexp(obj2))
+      return 0;
+    obj1 = scheme_regexp_source(obj1);
+    obj2 = scheme_regexp_source(obj2);
+    goto top;
   } else if ((t1 == scheme_structure_type)
              || (t1 == scheme_proc_struct_type)) {
     Scheme_Struct_Type *st1, *st2;
diff --git a/src/racket/src/cstartup.inc b/src/racket/src/cstartup.inc
index 0123a2d4a2..5d1dda7b0b 100644
--- a/src/racket/src/cstartup.inc
+++ b/src/racket/src/cstartup.inc
@@ -1,14 +1,14 @@
   {
-    SHARED_OK static MZCOMPILED_STRING_FAR unsigned char expr[] = {35,126,7,53,46,50,46,48,46,51,0,0,0,0,0,0,0,0,0,0,0,
+    SHARED_OK static MZCOMPILED_STRING_FAR unsigned char expr[] = {35,126,7,53,46,50,46,48,46,52,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,51,0,0,0,1,0,0,10,0,13,0,18,
-0,25,0,30,0,33,0,40,0,53,0,58,0,62,0,66,0,73,0,82,0,
+0,25,0,30,0,33,0,46,0,53,0,58,0,62,0,66,0,73,0,82,0,
 85,0,91,0,105,0,119,0,122,0,128,0,132,0,134,0,145,0,147,0,161,
 0,168,0,190,0,192,0,206,0,17,1,46,1,57,1,68,1,93,1,126,1,
 159,1,218,1,17,2,95,2,150,2,155,2,175,2,68,3,88,3,140,3,206,
 3,95,4,237,4,34,5,45,5,124,5,0,0,83,7,0,0,69,35,37,109,
 105,110,45,115,116,120,29,11,11,64,119,104,101,110,66,100,101,102,105,110,101,
-64,99,111,110,100,62,111,114,66,108,101,116,114,101,99,72,112,97,114,97,109,
-101,116,101,114,105,122,101,64,108,101,116,42,63,108,101,116,63,97,110,100,66,
+64,99,111,110,100,62,111,114,72,112,97,114,97,109,101,116,101,114,105,122,101,
+66,108,101,116,114,101,99,64,108,101,116,42,63,108,101,116,63,97,110,100,66,
 117,110,108,101,115,115,68,104,101,114,101,45,115,116,120,29,11,11,65,113,117,
 111,116,101,29,94,2,15,68,35,37,107,101,114,110,101,108,11,29,94,2,15,
 68,35,37,112,97,114,97,109,122,11,62,105,102,65,98,101,103,105,110,63,115,
@@ -87,10 +87,10 @@
 37,9,223,0,33,36,36,20,112,159,36,16,1,2,13,16,1,33,37,11,16,
 5,2,6,88,163,8,36,37,56,37,9,223,0,33,38,36,20,112,159,36,16,
 1,2,13,16,1,33,39,11,16,5,2,10,88,163,8,36,37,58,37,9,223,
-0,33,42,36,20,112,159,36,16,1,2,13,16,0,11,16,5,2,7,88,163,
+0,33,42,36,20,112,159,36,16,1,2,13,16,0,11,16,5,2,8,88,163,
 8,36,37,53,37,9,223,0,33,44,36,20,112,159,36,16,1,2,13,16,0,
 11,16,5,2,9,88,163,8,36,37,54,37,9,223,0,33,45,36,20,112,159,
-36,16,1,2,13,16,0,11,16,5,2,8,88,163,8,36,37,56,37,9,223,
+36,16,1,2,13,16,0,11,16,5,2,7,88,163,8,36,37,56,37,9,223,
 0,33,46,36,20,112,159,36,16,1,2,13,16,0,11,16,5,2,5,88,163,
 8,36,37,58,37,9,223,0,33,47,36,20,112,159,36,16,1,2,13,16,1,
 33,49,11,16,5,2,4,88,163,8,36,37,54,37,9,223,0,33,50,36,20,
@@ -99,507 +99,504 @@
     EVAL_ONE_SIZED_STR((char *)expr, 2018);
   }
   {
-    SHARED_OK static MZCOMPILED_STRING_FAR unsigned char expr[] = {35,126,7,53,46,50,46,48,46,51,0,0,0,0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,0,109,0,0,0,1,0,0,8,0,21,0,26,
+    SHARED_OK static MZCOMPILED_STRING_FAR unsigned char expr[] = {35,126,7,53,46,50,46,48,46,52,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,107,0,0,0,1,0,0,8,0,21,0,26,
 0,43,0,65,0,94,0,109,0,127,0,143,0,157,0,179,0,195,0,212,0,
 234,0,245,0,251,0,4,1,11,1,18,1,30,1,46,1,70,1,102,1,120,
-1,140,1,156,1,174,1,205,1,219,1,224,1,234,1,242,1,251,1,253,1,
-255,1,27,2,59,2,72,2,78,2,123,2,127,2,172,2,196,2,235,2,249,
-2,252,2,255,2,9,3,20,3,187,3,31,5,149,5,11,6,52,6,125,7,
-148,7,165,7,113,9,216,9,230,9,134,10,63,12,72,12,81,12,95,12,105,
-12,146,13,248,13,78,14,164,14,8,15,92,15,106,15,220,15,48,16,62,16,
-15,17,23,17,129,17,192,17,194,17,50,18,110,18,115,18,238,18,249,18,129,
-19,139,19,62,21,84,21,93,21,86,22,104,22,118,22,77,23,96,23,34,26,
-154,30,68,31,213,31,198,32,180,33,187,33,12,34,95,34,180,34,206,34,79,
-35,0,0,177,39,0,0,67,35,37,117,116,105,108,115,72,112,97,116,104,45,
-115,116,114,105,110,103,63,64,98,115,98,115,76,110,111,114,109,97,108,45,99,
-97,115,101,45,112,97,116,104,1,20,102,105,110,100,45,101,120,101,99,117,116,
-97,98,108,101,45,112,97,116,104,1,27,112,97,116,104,45,108,105,115,116,45,
-115,116,114,105,110,103,45,62,112,97,116,104,45,108,105,115,116,74,45,99,104,
-101,99,107,45,114,101,108,112,97,116,104,77,45,99,104,101,99,107,45,99,111,
-108,108,101,99,116,105,111,110,75,99,111,108,108,101,99,116,105,111,110,45,112,
-97,116,104,73,102,105,110,100,45,99,111,108,45,102,105,108,101,1,20,99,111,
-108,108,101,99,116,105,111,110,45,102,105,108,101,45,112,97,116,104,75,117,115,
-101,114,45,108,105,110,107,115,45,112,97,116,104,76,117,115,101,114,45,108,105,
-110,107,115,45,99,97,99,104,101,1,20,117,115,101,114,45,108,105,110,107,115,
-45,116,105,109,101,115,116,97,109,112,70,108,105,110,107,115,45,112,97,116,104,
-65,113,117,111,116,101,68,35,37,112,97,114,97,109,122,29,94,2,16,2,17,
-11,29,94,2,16,2,17,11,71,108,105,110,107,115,45,99,97,99,104,101,75,
-108,105,110,107,115,45,116,105,109,101,115,116,97,109,112,1,22,103,101,116,45,
-108,105,110,107,101,100,45,99,111,108,108,101,99,116,105,111,110,115,1,30,110,
-111,114,109,97,108,105,122,101,45,99,111,108,108,101,99,116,105,111,110,45,114,
-101,102,101,114,101,110,99,101,77,99,104,101,99,107,45,115,117,102,102,105,120,
-45,99,97,108,108,79,112,97,116,104,45,114,101,112,108,97,99,101,45,115,117,
-102,102,105,120,75,112,97,116,104,45,97,100,100,45,115,117,102,102,105,120,77,
-108,111,97,100,47,117,115,101,45,99,111,109,112,105,108,101,100,1,29,102,105,
-110,100,45,108,105,98,114,97,114,121,45,99,111,108,108,101,99,116,105,111,110,
-45,112,97,116,104,115,73,101,109,98,101,100,100,101,100,45,108,111,97,100,64,
-108,111,111,112,69,101,120,101,99,45,102,105,108,101,67,119,105,110,100,111,119,
-115,68,114,101,108,97,116,105,118,101,5,0,5,0,6,25,25,112,97,116,104,
-32,111,114,32,118,97,108,105,100,45,112,97,116,104,32,115,116,114,105,110,103,
-6,29,29,126,97,58,32,105,110,118,97,108,105,100,32,114,101,108,97,116,105,
-118,101,32,112,97,116,104,58,32,126,115,72,99,111,108,108,101,99,116,115,45,
-100,105,114,65,101,114,114,111,114,6,42,42,101,114,114,111,114,32,114,101,97,
-100,105,110,103,32,99,111,108,108,101,99,116,105,111,110,32,108,105,110,107,115,
-32,102,105,108,101,32,126,115,58,32,126,97,6,1,1,47,6,42,42,112,97,
-116,104,32,40,102,111,114,32,97,110,121,32,115,121,115,116,101,109,41,32,111,
-114,32,118,97,108,105,100,45,112,97,116,104,32,115,116,114,105,110,103,6,21,
-21,115,116,114,105,110,103,32,111,114,32,98,121,116,101,32,115,116,114,105,110,
-103,6,36,36,99,97,110,110,111,116,32,97,100,100,32,97,32,115,117,102,102,
-105,120,32,116,111,32,97,32,114,111,111,116,32,112,97,116,104,58,32,6,11,
-11,80,76,84,67,79,76,76,69,67,84,83,6,0,0,6,0,0,69,97,100,
-100,111,110,45,100,105,114,6,8,8,99,111,108,108,101,99,116,115,27,20,13,
-159,80,159,37,51,37,250,80,159,40,52,37,249,22,27,11,80,159,42,51,37,
-22,129,14,10,248,22,128,6,23,196,2,28,248,22,188,6,23,194,2,12,86,
-94,248,22,147,9,23,194,1,27,20,13,159,80,159,38,51,37,250,80,159,41,
-52,37,249,22,27,11,80,159,43,51,37,22,129,14,10,248,22,128,6,23,197,
-2,28,248,22,188,6,23,194,2,12,86,94,248,22,147,9,23,194,1,27,20,
-13,159,80,159,39,51,37,250,80,159,42,52,37,249,22,27,11,80,159,44,51,
-37,22,129,14,10,248,22,128,6,23,198,2,28,248,22,188,6,23,194,2,12,
-86,94,248,22,147,9,23,194,1,248,80,159,40,8,31,39,197,28,248,22,81,
-23,195,2,9,27,248,22,74,23,196,2,27,28,248,22,178,14,23,195,2,23,
-194,1,28,248,22,177,14,23,195,2,249,22,179,14,23,196,1,250,80,159,43,
-39,39,248,22,130,15,2,31,11,10,250,80,159,41,39,39,248,22,130,15,2,
-31,23,197,1,10,28,23,193,2,249,22,73,248,22,181,14,249,22,179,14,23,
-198,1,247,22,131,15,27,248,22,75,23,200,1,28,248,22,81,23,194,2,9,
-27,248,22,74,23,195,2,27,28,248,22,178,14,23,195,2,23,194,1,28,248,
-22,177,14,23,195,2,249,22,179,14,23,196,1,250,80,159,48,39,39,248,22,
-130,15,2,31,11,10,250,80,159,46,39,39,248,22,130,15,2,31,23,197,1,
-10,28,23,193,2,249,22,73,248,22,181,14,249,22,179,14,23,198,1,247,22,
-131,15,248,80,159,46,8,30,39,248,22,75,23,199,1,86,94,23,193,1,248,
-80,159,44,8,30,39,248,22,75,23,197,1,86,94,23,193,1,27,248,22,75,
-23,198,1,28,248,22,81,23,194,2,9,27,248,22,74,23,195,2,27,28,248,
-22,178,14,23,195,2,23,194,1,28,248,22,177,14,23,195,2,249,22,179,14,
-23,196,1,250,80,159,46,39,39,248,22,130,15,2,31,11,10,250,80,159,44,
-39,39,248,22,130,15,2,31,23,197,1,10,28,23,193,2,249,22,73,248,22,
-181,14,249,22,179,14,23,198,1,247,22,131,15,248,80,159,44,8,30,39,248,
-22,75,23,199,1,248,80,159,42,8,30,39,248,22,75,196,28,248,22,81,23,
-195,2,9,27,248,22,74,23,196,2,27,28,248,22,178,14,23,195,2,23,194,
-1,28,248,22,177,14,23,195,2,249,22,179,14,23,196,1,250,80,159,43,39,
-39,248,22,130,15,2,31,11,10,250,80,159,41,39,39,248,22,130,15,2,31,
-23,197,1,10,28,23,193,2,249,22,73,248,22,181,14,249,22,179,14,23,198,
-1,247,22,131,15,248,80,159,41,8,29,39,248,22,75,23,200,1,248,80,159,
-39,8,29,39,248,22,75,197,28,248,22,81,23,195,2,9,27,248,22,74,23,
-196,2,27,28,248,22,178,14,23,195,2,23,194,1,28,248,22,177,14,23,195,
-2,249,22,179,14,23,196,1,250,80,159,43,39,39,248,22,130,15,2,31,11,
-10,250,80,159,41,39,39,248,22,130,15,2,31,23,197,1,10,28,23,193,2,
-249,22,73,248,22,181,14,249,22,179,14,23,198,1,247,22,131,15,248,80,159,
-41,8,28,39,248,22,75,23,200,1,248,80,159,39,8,28,39,248,22,75,197,
-27,248,22,154,14,23,195,2,28,23,193,2,192,86,94,23,193,1,28,248,22,
-129,7,23,195,2,27,248,22,176,14,195,28,192,192,248,22,177,14,195,11,86,
-94,28,28,248,22,155,14,23,195,2,10,28,248,22,154,14,23,195,2,10,28,
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-    EVAL_ONE_SIZED_STR((char *)expr, 10420);
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+22,133,15,26,8,2,91,200,203,204,206,23,15,23,18,200,11,86,95,28,28,
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+7,23,194,2,28,248,22,177,14,23,194,2,10,248,22,178,14,23,194,2,11,
+12,252,22,175,9,23,200,2,2,32,36,23,198,2,23,199,2,28,28,248,22,
+129,7,23,195,2,10,248,22,182,7,23,195,2,86,94,23,194,1,12,252,22,
+175,9,23,200,2,2,43,37,23,198,2,23,199,1,90,159,39,11,89,161,39,
+36,11,248,22,176,14,23,197,2,86,94,23,195,1,86,94,28,192,12,250,22,
+176,9,23,201,1,2,44,23,199,1,249,22,7,194,195,90,159,38,11,89,161,
+38,36,11,86,95,28,28,248,22,156,14,23,196,2,10,28,248,22,155,14,23,
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+22,178,14,23,196,2,11,12,252,22,175,9,2,25,2,32,36,23,200,2,23,
+201,2,28,28,248,22,129,7,23,197,2,10,248,22,182,7,23,197,2,12,252,
+22,175,9,2,25,2,43,37,23,200,2,23,201,2,90,159,39,11,89,161,39,
+36,11,248,22,176,14,23,199,2,86,94,23,195,1,86,94,28,192,12,250,22,
+176,9,2,25,2,44,23,201,2,249,22,7,194,195,27,249,22,165,14,250,22,
+154,15,0,20,35,114,120,35,34,40,63,58,91,46,93,91,94,46,93,42,124,
+41,36,34,248,22,161,14,23,201,1,28,248,22,129,7,23,203,2,249,22,144,
+8,23,204,1,8,63,23,202,1,28,248,22,156,14,23,199,2,248,22,157,14,
+23,199,1,86,94,23,198,1,247,22,158,14,28,248,22,155,14,194,249,22,173,
+14,195,194,192,90,159,38,11,89,161,38,36,11,86,95,28,28,248,22,156,14,
+23,196,2,10,28,248,22,155,14,23,196,2,10,28,248,22,129,7,23,196,2,
+28,248,22,177,14,23,196,2,10,248,22,178,14,23,196,2,11,12,252,22,175,
+9,2,26,2,32,36,23,200,2,23,201,2,28,28,248,22,129,7,23,197,2,
+10,248,22,182,7,23,197,2,12,252,22,175,9,2,26,2,43,37,23,200,2,
+23,201,2,90,159,39,11,89,161,39,36,11,248,22,176,14,23,199,2,86,94,
+23,195,1,86,94,28,192,12,250,22,176,9,2,26,2,44,23,201,2,249,22,
+7,194,195,27,249,22,165,14,249,22,130,8,250,22,155,15,0,9,35,114,120,
+35,34,91,46,93,34,248,22,161,14,23,203,1,6,1,1,95,28,248,22,129,
+7,23,202,2,249,22,144,8,23,203,1,8,63,23,201,1,28,248,22,156,14,
+23,199,2,248,22,157,14,23,199,1,86,94,23,198,1,247,22,158,14,28,248,
+22,155,14,194,249,22,173,14,195,194,192,249,247,22,160,5,194,11,27,247,22,
+135,15,249,80,159,39,40,38,28,23,195,2,27,248,22,149,8,2,45,28,192,
+192,2,41,2,41,27,28,23,196,1,250,22,173,14,248,22,131,15,2,46,247,
+22,147,8,2,47,11,27,248,80,159,42,8,28,39,250,22,87,9,248,22,83,
+248,22,131,15,2,38,9,28,193,249,22,73,195,194,192,27,247,22,135,15,249,
+80,159,39,40,38,28,23,195,2,27,248,22,149,8,2,45,28,192,192,2,41,
+2,41,27,28,23,196,1,250,22,173,14,248,22,131,15,2,46,247,22,147,8,
+2,47,11,27,248,80,159,42,8,29,39,250,22,87,23,203,1,248,22,83,248,
+22,131,15,2,38,9,28,193,249,22,73,195,194,192,27,247,22,135,15,249,80,
+159,39,40,38,28,23,195,2,27,248,22,149,8,2,45,28,192,192,2,41,2,
+41,27,28,23,196,1,250,22,173,14,248,22,131,15,2,46,247,22,147,8,2,
+47,11,27,248,80,159,42,8,30,39,250,22,87,23,203,1,248,22,83,248,22,
+131,15,2,38,23,204,1,28,193,249,22,73,195,194,192,86,94,249,22,182,6,
+247,22,156,5,195,248,22,143,6,249,22,128,4,36,249,22,176,3,197,198,27,
+28,23,197,2,86,95,23,196,1,23,195,1,23,197,1,86,94,23,197,1,27,
+248,22,131,15,2,31,27,250,80,159,42,39,39,23,197,1,11,11,27,248,22,
+131,4,23,199,1,27,28,23,194,2,23,194,1,86,94,23,194,1,36,27,248,
+22,131,4,23,202,1,27,28,23,194,2,23,194,1,86,94,23,194,1,36,249,
+22,187,5,23,199,1,20,20,95,88,163,8,36,36,48,11,9,224,4,2,33,
+105,23,195,1,23,197,1,27,248,22,172,5,23,195,1,248,80,159,39,8,31,
+39,193,159,36,20,112,159,36,16,1,11,16,0,20,26,141,2,1,2,1,29,
+11,11,11,11,11,10,43,80,158,36,36,20,112,159,40,16,28,2,2,2,3,
+2,4,2,5,2,6,2,7,2,8,2,9,2,10,2,11,2,12,2,13,2,
+14,2,15,30,2,18,76,102,105,110,100,45,108,105,110,107,115,45,112,97,116,
+104,33,4,30,2,19,1,20,112,97,114,97,109,101,116,101,114,105,122,97,116,
+105,111,110,45,107,101,121,6,30,2,19,1,23,101,120,116,101,110,100,45,112,
+97,114,97,109,101,116,101,114,105,122,97,116,105,111,110,3,2,20,2,21,2,
+22,30,2,18,1,21,101,120,99,101,112,116,105,111,110,45,104,97,110,100,108,
+101,114,45,107,101,121,2,2,23,2,24,2,25,2,26,2,27,2,28,2,29,
+16,0,37,39,36,16,0,36,16,12,2,8,2,7,2,3,2,24,2,22,2,
+20,2,15,2,21,2,23,2,13,2,12,2,14,48,11,11,11,16,12,2,11,
+2,9,2,29,2,10,2,5,2,28,2,27,2,4,2,26,2,6,2,25,2,
+2,16,12,11,11,11,11,11,11,11,11,11,11,11,11,16,12,2,11,2,9,
+2,29,2,10,2,5,2,28,2,27,2,4,2,26,2,6,2,25,2,2,48,
+48,37,12,11,11,16,0,16,0,16,0,36,36,11,12,11,11,16,0,16,0,
+16,0,36,36,16,28,20,15,16,2,88,163,8,36,37,51,16,2,8,240,0,
+128,0,0,8,240,1,128,0,0,2,30,223,0,33,48,80,159,36,8,31,39,
+20,15,16,2,88,163,8,36,37,56,16,2,44,8,240,0,64,0,0,2,30,
+223,0,33,49,80,159,36,8,30,39,20,15,16,2,88,163,8,36,37,51,16,
+2,44,8,128,128,2,30,223,0,33,50,80,159,36,8,29,39,20,15,16,2,
+88,163,8,36,37,51,16,2,44,8,128,64,2,30,223,0,33,51,80,159,36,
+8,28,39,20,15,16,2,32,0,88,163,36,37,45,11,2,2,222,33,52,80,
+159,36,36,37,20,15,16,2,249,22,131,7,7,92,7,92,80,159,36,37,37,
+20,15,16,2,88,163,36,37,54,38,2,4,223,0,33,53,80,159,36,38,37,
+20,15,16,2,20,25,96,2,5,88,163,8,36,39,8,24,52,9,223,0,33,
+60,88,163,36,38,47,44,9,223,0,33,61,88,163,36,37,46,44,9,223,0,
+33,62,80,159,36,39,37,20,15,16,2,27,248,22,139,15,248,22,143,8,27,
+28,249,22,139,9,247,22,151,8,2,33,6,1,1,59,6,1,1,58,250,22,
+177,7,6,14,14,40,91,94,126,97,93,42,41,126,97,40,46,42,41,23,196,
+2,23,196,1,88,163,8,36,38,48,11,2,6,223,0,33,66,80,159,36,40,
+37,20,15,16,2,32,0,88,163,8,36,38,50,11,2,7,222,33,67,80,159,
+36,41,37,20,15,16,2,32,0,88,163,8,36,39,51,11,2,8,222,33,69,
+80,159,36,42,37,20,15,16,2,88,163,45,38,51,8,128,4,2,9,223,0,
+33,72,80,159,36,43,37,20,15,16,2,88,163,45,39,52,8,128,4,2,11,
+223,0,33,75,80,159,36,45,37,20,15,16,2,248,22,131,15,70,108,105,110,
+107,115,45,102,105,108,101,80,159,36,46,37,20,15,16,2,247,22,133,2,80,
+158,36,47,20,15,16,2,2,76,80,158,36,48,20,15,16,2,248,80,159,37,
+50,37,88,163,36,36,49,8,240,8,128,1,0,9,223,1,33,77,80,159,36,
+49,37,20,15,16,2,247,22,133,2,80,158,36,53,20,15,16,2,2,76,80,
+158,36,54,20,15,16,2,88,163,36,37,44,8,240,0,188,23,0,2,22,223,
+0,33,88,80,159,36,55,37,20,15,16,2,88,163,36,38,56,8,240,0,0,
+32,0,2,23,223,0,33,90,80,159,36,57,37,20,15,16,2,88,163,36,41,
+8,24,8,240,0,32,40,0,2,10,223,0,33,97,80,159,36,44,37,20,15,
+16,2,32,0,88,163,36,39,50,11,2,24,222,33,98,80,159,36,58,37,20,
+15,16,2,32,0,88,163,36,38,53,11,2,25,222,33,99,80,159,36,59,37,
+20,15,16,2,32,0,88,163,36,38,54,11,2,26,222,33,100,80,159,36,8,
+24,37,20,15,16,2,32,0,88,163,36,37,44,11,2,27,222,33,101,80,159,
+36,8,25,37,20,15,16,2,20,25,96,2,28,88,163,36,36,53,16,2,52,
+8,128,64,9,223,0,33,102,88,163,36,37,54,16,2,52,8,128,128,9,223,
+0,33,103,88,163,36,38,55,16,2,52,8,240,0,64,0,0,9,223,0,33,
+104,80,159,36,8,26,37,20,15,16,2,88,163,8,36,39,54,16,2,44,8,
+240,0,128,0,0,2,29,223,0,33,106,80,159,36,8,27,37,95,29,94,2,
+16,68,35,37,107,101,114,110,101,108,11,29,94,2,16,69,35,37,109,105,110,
+45,115,116,120,11,2,18,9,9,9,36,0};
+    EVAL_ONE_SIZED_STR((char *)expr, 10364);
   }
   {
-    SHARED_OK static MZCOMPILED_STRING_FAR unsigned char expr[] = {35,126,7,53,46,50,46,48,46,51,0,0,0,0,0,0,0,0,0,0,0,
+    SHARED_OK static MZCOMPILED_STRING_FAR unsigned char expr[] = {35,126,7,53,46,50,46,48,46,52,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,12,0,0,0,1,0,0,15,0,40,0,57,
 0,75,0,97,0,120,0,140,0,162,0,169,0,176,0,183,0,0,0,175,1,
 0,0,74,35,37,112,108,97,99,101,45,115,116,114,117,99,116,1,23,115,116,
@@ -626,304 +623,303 @@
     EVAL_ONE_SIZED_STR((char *)expr, 496);
   }
   {
-    SHARED_OK static MZCOMPILED_STRING_FAR unsigned char expr[] = {35,126,7,53,46,50,46,48,46,51,0,0,0,0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,0,65,0,0,0,1,0,0,7,0,18,0,45,
+    SHARED_OK static MZCOMPILED_STRING_FAR unsigned char expr[] = {35,126,7,53,46,50,46,48,46,52,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,69,0,0,0,1,0,0,7,0,18,0,45,
 0,51,0,64,0,73,0,80,0,102,0,124,0,150,0,158,0,170,0,185,0,
 201,0,219,0,239,0,251,0,11,1,34,1,46,1,77,1,84,1,89,1,94,
-1,99,1,104,1,109,1,118,1,123,1,127,1,135,1,144,1,152,1,213,1,
-60,2,81,2,102,2,132,2,162,2,220,2,22,3,71,3,120,3,54,9,105,
-9,168,9,187,9,201,9,103,10,116,10,250,10,36,12,159,12,165,12,179,12,
-206,12,226,12,30,13,117,13,119,13,194,13,199,19,252,19,20,20,0,0,109,
-23,0,0,66,35,37,98,111,111,116,70,100,108,108,45,115,117,102,102,105,120,
-1,25,100,101,102,97,117,108,116,45,108,111,97,100,47,117,115,101,45,99,111,
-109,112,105,108,101,100,65,113,117,111,116,101,29,94,2,4,67,35,37,117,116,
-105,108,115,11,68,35,37,112,97,114,97,109,122,29,94,2,4,2,6,11,1,
-20,112,97,114,97,109,101,116,101,114,105,122,97,116,105,111,110,45,107,101,121,
-1,20,100,101,102,97,117,108,116,45,114,101,97,100,101,114,45,103,117,97,114,
-100,1,24,45,109,111,100,117,108,101,45,104,97,115,104,45,116,97,98,108,101,
-45,116,97,98,108,101,67,67,65,67,72,69,45,78,71,45,112,97,116,104,45,
-99,97,99,104,101,74,112,97,116,104,45,99,97,99,104,101,45,103,101,116,75,
-112,97,116,104,45,99,97,99,104,101,45,115,101,116,33,77,45,108,111,97,100,
-105,110,103,45,102,105,108,101,110,97,109,101,79,45,108,111,97,100,105,110,103,
-45,112,114,111,109,112,116,45,116,97,103,71,45,112,114,101,118,45,114,101,108,
-116,111,75,45,112,114,101,118,45,114,101,108,116,111,45,100,105,114,1,21,115,
-112,108,105,116,45,114,101,108,97,116,105,118,101,45,115,116,114,105,110,103,71,
-111,114,105,103,45,112,97,114,97,109,122,1,29,115,116,97,110,100,97,114,100,
-45,109,111,100,117,108,101,45,110,97,109,101,45,114,101,115,111,108,118,101,114,
-29,94,2,4,2,6,11,64,98,111,111,116,64,115,101,97,108,64,115,97,109,
-101,5,3,46,122,111,5,3,46,122,111,6,6,6,110,97,116,105,118,101,64,
-108,111,111,112,63,108,105,98,67,105,103,110,111,114,101,100,249,22,14,195,80,
-159,38,49,38,249,80,159,38,52,39,195,10,90,159,39,11,89,161,39,36,11,
-248,22,175,14,197,86,95,23,195,1,23,193,1,28,249,22,142,15,0,11,35,
-114,120,34,91,46,93,115,115,36,34,248,22,159,14,23,197,1,249,80,159,41,
-56,39,198,5,4,46,114,107,116,196,27,28,23,195,2,28,249,22,139,9,23,
-197,2,80,158,39,50,86,94,23,195,1,80,158,37,51,27,248,22,138,5,23,
-197,2,28,248,22,154,14,23,194,2,90,159,39,11,89,161,39,36,11,248,22,
-175,14,23,197,1,86,95,20,18,159,11,80,158,41,50,198,20,18,159,11,80,
-158,41,51,192,192,11,11,28,23,193,2,192,86,94,23,193,1,27,247,22,161,
-5,28,192,192,247,22,131,15,250,22,172,14,23,197,1,23,199,1,249,80,159,
-43,39,39,23,198,1,2,26,250,22,172,14,23,197,1,23,199,1,249,80,159,
-43,39,39,23,198,1,2,27,252,22,172,14,23,199,1,23,201,1,2,28,247,
-22,152,8,249,80,159,45,39,39,23,200,1,80,159,45,36,38,252,22,172,14,
-23,199,1,23,201,1,2,28,247,22,152,8,249,80,159,45,39,39,23,200,1,
-80,159,45,36,38,27,252,22,172,14,23,200,1,23,202,1,2,28,247,22,152,
-8,249,80,159,46,39,39,23,201,1,80,159,46,36,38,27,250,22,189,14,196,
+1,100,1,105,1,110,1,119,1,124,1,128,1,139,1,146,1,149,1,157,1,
+166,1,174,1,231,1,78,2,99,2,120,2,150,2,180,2,238,2,40,3,89,
+3,138,3,68,9,119,9,182,9,201,9,215,9,117,10,130,10,8,11,50,12,
+173,12,179,12,193,12,220,12,240,12,39,13,49,13,136,13,138,13,213,13,172,
+19,225,19,249,19,0,0,82,23,0,0,66,35,37,98,111,111,116,70,100,108,
+108,45,115,117,102,102,105,120,1,25,100,101,102,97,117,108,116,45,108,111,97,
+100,47,117,115,101,45,99,111,109,112,105,108,101,100,65,113,117,111,116,101,29,
+94,2,4,67,35,37,117,116,105,108,115,11,68,35,37,112,97,114,97,109,122,
+29,94,2,4,2,6,11,1,20,112,97,114,97,109,101,116,101,114,105,122,97,
+116,105,111,110,45,107,101,121,1,20,100,101,102,97,117,108,116,45,114,101,97,
+100,101,114,45,103,117,97,114,100,1,24,45,109,111,100,117,108,101,45,104,97,
+115,104,45,116,97,98,108,101,45,116,97,98,108,101,67,67,65,67,72,69,45,
+78,71,45,112,97,116,104,45,99,97,99,104,101,74,112,97,116,104,45,99,97,
+99,104,101,45,103,101,116,75,112,97,116,104,45,99,97,99,104,101,45,115,101,
+116,33,77,45,108,111,97,100,105,110,103,45,102,105,108,101,110,97,109,101,79,
+45,108,111,97,100,105,110,103,45,112,114,111,109,112,116,45,116,97,103,71,45,
+112,114,101,118,45,114,101,108,116,111,75,45,112,114,101,118,45,114,101,108,116,
+111,45,100,105,114,1,21,115,112,108,105,116,45,114,101,108,97,116,105,118,101,
+45,115,116,114,105,110,103,71,111,114,105,103,45,112,97,114,97,109,122,1,29,
+115,116,97,110,100,97,114,100,45,109,111,100,117,108,101,45,110,97,109,101,45,
+114,101,115,111,108,118,101,114,29,94,2,4,2,6,11,64,98,111,111,116,64,
+115,101,97,108,5,4,46,114,107,116,64,115,97,109,101,5,3,46,122,111,6,
+6,6,110,97,116,105,118,101,64,108,111,111,112,63,108,105,98,6,8,8,109,
+97,105,110,46,114,107,116,6,4,4,46,114,107,116,6,0,0,67,105,103,110,
+111,114,101,100,249,22,14,195,80,159,38,49,38,249,80,159,38,52,39,195,10,
+90,159,39,11,89,161,39,36,11,248,22,176,14,197,86,95,23,195,1,23,193,
+1,28,249,22,143,15,0,11,35,114,120,34,91,46,93,115,115,36,34,248,22,
+160,14,23,197,1,249,80,159,41,56,39,198,2,25,196,27,28,23,195,2,28,
+249,22,139,9,23,197,2,80,158,39,50,86,94,23,195,1,80,158,37,51,27,
+248,22,138,5,23,197,2,28,248,22,155,14,23,194,2,90,159,39,11,89,161,
+39,36,11,248,22,176,14,23,197,1,86,95,20,18,159,11,80,158,41,50,198,
+20,18,159,11,80,158,41,51,192,192,11,11,28,23,193,2,192,86,94,23,193,
+1,27,247,22,161,5,28,192,192,247,22,132,15,250,22,173,14,23,197,1,23,
+199,1,249,80,159,43,39,39,23,198,1,2,27,250,22,173,14,23,197,1,23,
+199,1,249,80,159,43,39,39,23,198,1,2,27,252,22,173,14,23,199,1,23,
+201,1,2,28,247,22,152,8,249,80,159,45,39,39,23,200,1,80,159,45,36,
+38,252,22,173,14,23,199,1,23,201,1,2,28,247,22,152,8,249,80,159,45,
+39,39,23,200,1,80,159,45,36,38,27,252,22,173,14,23,200,1,23,202,1,
+2,28,247,22,152,8,249,80,159,46,39,39,23,201,1,80,159,46,36,38,27,
+250,22,190,14,196,11,32,0,88,163,8,36,36,41,11,9,222,11,28,192,249,
+22,73,195,194,11,27,252,22,173,14,23,200,1,23,202,1,2,28,247,22,152,
+8,249,80,159,46,39,39,23,201,1,80,159,46,36,38,27,250,22,190,14,196,
 11,32,0,88,163,8,36,36,41,11,9,222,11,28,192,249,22,73,195,194,11,
-27,252,22,172,14,23,200,1,23,202,1,2,28,247,22,152,8,249,80,159,46,
-39,39,23,201,1,80,159,46,36,38,27,250,22,189,14,196,11,32,0,88,163,
-8,36,36,41,11,9,222,11,28,192,249,22,73,195,194,11,27,250,22,172,14,
-23,198,1,23,200,1,249,80,159,44,39,39,23,199,1,2,26,27,250,22,189,
-14,196,11,32,0,88,163,8,36,36,41,11,9,222,11,28,192,249,22,73,195,
-194,11,27,250,22,172,14,23,198,1,23,200,1,249,80,159,44,39,39,23,199,
-1,2,27,27,250,22,189,14,196,11,32,0,88,163,8,36,36,41,11,9,222,
-11,28,192,249,22,73,195,194,11,86,94,28,248,80,159,37,38,39,23,195,2,
-12,250,22,175,9,77,108,111,97,100,47,117,115,101,45,99,111,109,112,105,108,
-101,100,6,25,25,112,97,116,104,32,111,114,32,118,97,108,105,100,45,112,97,
-116,104,32,115,116,114,105,110,103,23,197,2,90,159,46,11,89,161,37,36,11,
-28,248,22,178,14,23,205,2,23,204,2,27,247,22,161,5,28,23,193,2,249,
-22,179,14,23,207,2,23,195,1,23,205,2,89,161,39,37,11,248,22,175,14,
-23,205,1,86,94,23,196,1,89,161,38,40,11,28,23,205,2,27,248,22,159,
-14,23,197,2,27,248,22,187,7,23,195,2,28,28,249,22,188,3,23,195,2,
-40,249,22,190,7,5,4,46,114,107,116,249,22,129,8,23,198,2,249,22,176,
-3,23,199,2,40,11,249,22,7,23,199,2,248,22,163,14,249,22,130,8,250,
-22,129,8,23,202,1,36,249,22,176,3,23,203,1,40,5,3,46,115,115,249,
-22,7,23,199,2,11,249,22,7,23,197,2,11,89,161,37,42,11,28,249,22,
-139,9,23,199,2,23,197,2,23,193,2,249,22,172,14,23,196,2,23,199,2,
-89,161,37,43,11,28,23,198,2,28,249,22,139,9,23,200,2,23,197,1,23,
-193,1,86,94,23,193,1,249,22,172,14,23,196,2,23,200,2,86,94,23,195,
-1,11,89,161,37,44,11,28,249,22,139,9,23,196,2,68,114,101,108,97,116,
-105,118,101,86,94,23,194,1,2,25,23,194,1,89,161,37,45,11,247,22,133,
-15,27,250,22,189,14,23,203,2,11,32,0,88,163,8,36,36,41,11,9,222,
-11,27,28,23,194,2,249,22,73,23,203,2,23,196,1,86,94,23,194,1,11,
-27,28,23,203,2,28,23,194,2,11,27,250,22,189,14,23,207,2,11,32,0,
-88,163,8,36,36,41,11,9,222,11,28,192,249,22,73,23,206,2,194,11,11,
-27,28,23,195,2,23,195,2,23,194,2,27,88,163,36,37,50,44,62,122,111,
-225,15,13,9,33,36,27,88,163,36,37,50,44,66,97,108,116,45,122,111,225,
-16,14,11,33,37,27,88,163,36,37,52,45,9,225,17,15,11,33,38,27,88,
-163,36,37,52,45,9,225,18,16,13,33,39,27,28,23,200,2,23,200,2,248,
-22,137,9,23,200,2,27,28,23,208,2,28,23,200,2,86,94,23,201,1,23,
-200,2,248,22,137,9,23,202,1,11,27,28,23,195,2,28,23,197,1,27,249,
-22,5,88,163,8,36,37,53,45,9,225,24,22,18,33,40,23,216,2,27,28,
-23,202,2,11,193,28,192,192,28,193,28,23,202,2,28,249,22,188,3,248,22,
-75,196,248,22,75,23,205,2,193,11,11,11,11,86,94,23,197,1,11,28,23,
-193,2,86,105,23,213,1,23,211,1,23,210,1,23,209,1,23,208,1,23,201,
-1,23,200,1,23,199,1,23,198,1,23,196,1,23,195,1,23,194,1,20,13,
-159,80,159,57,40,37,250,80,159,8,24,41,37,249,22,27,11,80,159,8,26,
-40,37,22,181,4,11,20,13,159,80,159,57,40,37,250,80,159,8,24,41,37,
-249,22,27,11,80,159,8,26,40,37,22,161,5,28,248,22,154,14,23,216,2,
-23,215,1,86,94,23,215,1,247,22,131,15,249,247,22,137,15,248,22,74,195,
-23,25,86,94,23,193,1,27,28,23,195,2,28,23,197,1,27,249,22,5,88,
-163,8,36,37,53,45,9,225,25,23,20,33,41,23,217,2,27,28,23,204,2,
-11,193,28,192,192,28,193,28,203,28,249,22,188,3,248,22,75,196,248,22,75,
-206,193,11,11,11,11,86,94,23,197,1,11,28,23,193,2,86,102,23,214,1,
-23,211,1,23,210,1,23,209,1,23,201,1,23,200,1,23,199,1,23,196,1,
-23,195,1,20,13,159,80,159,58,40,37,250,80,159,8,25,41,37,249,22,27,
-11,80,159,8,27,40,37,22,181,4,23,215,1,20,13,159,80,159,58,40,37,
-250,80,159,8,25,41,37,249,22,27,11,80,159,8,27,40,37,22,161,5,28,
-248,22,154,14,23,217,2,23,216,1,86,94,23,216,1,247,22,131,15,249,247,
-22,137,15,248,22,74,195,23,26,86,94,23,193,1,27,28,23,197,2,28,23,
-201,1,27,249,22,5,20,20,94,88,163,8,36,37,51,44,9,225,26,24,20,
-33,42,23,213,1,23,218,2,27,28,23,204,2,11,193,28,192,192,28,193,28,
-23,204,2,28,249,22,188,3,248,22,75,196,248,22,75,23,207,2,193,11,11,
-11,86,94,23,210,1,11,86,94,23,201,1,11,28,23,193,2,86,101,23,215,
-1,23,213,1,23,212,1,23,211,1,23,202,1,23,200,1,23,197,1,23,196,
-1,20,13,159,80,159,59,40,37,250,80,159,8,26,41,37,249,22,27,11,80,
-159,8,28,40,37,22,181,4,11,20,13,159,80,159,59,40,37,250,80,159,8,
-26,41,37,249,22,27,11,80,159,8,28,40,37,22,161,5,28,248,22,154,14,
-23,218,2,23,217,1,86,94,23,217,1,247,22,131,15,249,247,22,159,5,248,
-22,74,195,23,27,86,94,23,193,1,27,28,23,197,1,28,23,201,1,27,249,
-22,5,20,20,94,88,163,8,36,37,51,44,9,225,27,25,22,33,43,23,215,
-1,23,219,1,27,28,23,205,2,11,193,28,192,192,28,193,28,204,28,249,22,
-188,3,248,22,75,196,248,22,75,23,15,193,11,11,11,86,95,23,216,1,23,
-212,1,11,86,94,23,201,1,11,28,23,193,2,86,95,23,213,1,23,198,1,
-20,13,159,80,159,8,24,40,37,250,80,159,8,27,41,37,249,22,27,11,80,
-159,8,29,40,37,22,181,4,23,217,1,20,13,159,80,159,8,24,40,37,250,
-80,159,8,27,41,37,249,22,27,11,80,159,8,29,40,37,22,161,5,28,248,
-22,154,14,23,219,2,23,218,1,86,94,23,218,1,247,22,131,15,249,247,22,
-159,5,248,22,74,195,23,28,86,94,23,193,1,27,28,23,199,2,86,94,23,
-215,1,23,214,1,86,94,23,214,1,23,215,1,20,13,159,80,159,8,25,40,
-37,250,80,159,8,28,41,37,249,22,27,11,80,159,8,30,40,37,22,181,4,
-28,23,30,28,23,202,1,11,195,86,94,23,202,1,11,20,13,159,80,159,8,
-25,40,37,250,80,159,8,28,41,37,249,22,27,11,80,159,8,30,40,37,22,
-161,5,28,248,22,154,14,23,220,2,23,219,1,86,94,23,219,1,247,22,131,
-15,249,247,22,159,5,194,23,29,27,249,22,159,8,80,159,39,45,38,249,22,
-183,3,248,22,179,3,248,22,166,2,200,8,128,8,27,28,193,248,22,169,2,
-194,11,28,192,27,249,22,96,198,195,28,192,248,22,75,193,11,11,27,249,22,
-183,3,248,22,179,3,248,22,166,2,198,8,128,8,27,249,22,159,8,80,159,
-40,45,38,195,27,28,193,248,22,169,2,194,11,250,22,160,8,80,159,42,45,
-38,197,248,22,168,2,249,22,73,249,22,73,204,205,28,198,198,9,0,17,35,
-114,120,34,94,40,46,42,63,41,47,40,46,42,41,36,34,32,48,88,163,8,
-36,37,59,11,2,29,222,33,49,27,249,22,142,15,2,47,23,196,2,28,23,
-193,2,86,94,23,194,1,249,22,73,248,22,98,23,196,2,27,248,22,107,23,
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-249,22,73,248,22,98,23,196,2,27,248,22,107,23,197,1,27,249,22,142,15,
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-    EVAL_ONE_SIZED_STR((char *)expr, 6168);
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+222,33,64,80,159,51,8,29,39,20,20,94,88,163,36,36,52,8,176,64,9,
+228,15,11,10,6,5,2,33,65,23,195,1,250,22,151,2,23,197,1,197,10,
+12,28,28,248,22,154,8,23,202,1,11,28,248,22,129,7,23,206,2,10,28,
+248,22,58,23,206,2,10,28,248,22,71,23,206,2,249,22,139,9,248,22,74,
+23,208,2,2,30,11,249,80,159,49,47,39,28,248,22,129,7,23,208,2,249,
+22,73,23,209,1,248,80,159,52,8,26,39,23,211,1,86,94,23,208,1,249,
+22,73,23,209,1,247,22,133,15,252,22,156,8,23,207,1,23,206,1,23,204,
+1,23,202,1,200,12,193,86,96,20,18,159,11,80,158,36,53,248,80,159,37,
+8,25,37,249,22,27,11,80,159,39,55,37,248,22,179,4,80,159,37,54,38,
+248,22,160,5,80,159,37,37,39,248,22,188,13,80,159,37,42,39,20,18,159,
+11,80,158,36,53,248,80,159,37,8,25,37,249,22,27,11,80,159,39,55,37,
+159,36,20,112,159,36,16,1,11,16,0,20,26,141,2,1,2,1,29,11,11,
+11,11,11,10,38,80,158,36,36,20,112,159,40,16,26,2,2,2,3,30,2,
+5,72,112,97,116,104,45,115,116,114,105,110,103,63,11,30,2,5,75,112,97,
+116,104,45,97,100,100,45,115,117,102,102,105,120,8,30,2,7,2,8,6,30,
+2,7,1,23,101,120,116,101,110,100,45,112,97,114,97,109,101,116,101,114,105,
+122,97,116,105,111,110,3,2,9,2,10,2,11,2,12,2,13,2,14,2,15,
+2,16,2,17,2,18,2,19,2,20,2,21,30,2,22,2,8,6,30,2,5,
+79,112,97,116,104,45,114,101,112,108,97,99,101,45,115,117,102,102,105,120,10,
+30,2,5,73,102,105,110,100,45,99,111,108,45,102,105,108,101,3,30,2,5,
+76,110,111,114,109,97,108,45,99,97,115,101,45,112,97,116,104,7,2,23,2,
+24,30,2,22,74,114,101,112,97,114,97,109,101,116,101,114,105,122,101,7,16,
+0,37,39,36,16,0,36,16,14,2,15,2,16,2,10,2,12,2,17,2,18,
+2,11,2,3,2,9,2,2,2,13,2,14,2,19,2,21,50,11,11,11,16,
+3,2,23,2,20,2,24,16,3,11,11,11,16,3,2,23,2,20,2,24,39,
+39,37,12,11,11,16,0,16,0,16,0,36,36,11,12,11,11,16,0,16,0,
+16,0,36,36,16,21,20,15,16,2,88,163,36,37,45,8,128,128,9,223,0,
+33,35,80,159,36,8,29,39,20,15,16,2,88,163,8,36,37,45,8,240,0,
+0,1,0,9,223,0,33,36,80,159,36,8,28,39,20,15,16,2,88,163,36,
+37,49,8,240,0,0,16,0,72,112,97,116,104,45,115,115,45,62,114,107,116,
+223,0,33,37,80,159,36,8,27,39,20,15,16,2,88,163,36,37,49,8,240,
+0,192,0,0,67,103,101,116,45,100,105,114,223,0,33,38,80,159,36,8,26,
+39,20,15,16,2,248,22,151,8,69,115,111,45,115,117,102,102,105,120,80,159,
+36,36,37,20,15,16,2,88,163,36,38,8,38,8,61,2,3,223,0,33,47,
+80,159,36,37,37,20,15,16,2,32,0,88,163,8,36,37,42,11,2,9,222,
+192,80,159,36,42,37,20,15,16,2,247,22,136,2,80,159,36,43,37,20,15,
+16,2,8,128,8,80,159,36,44,37,20,15,16,2,249,22,155,8,8,128,8,
+11,80,159,36,45,37,20,15,16,2,88,163,8,36,37,50,8,128,8,2,13,
+223,0,33,48,80,159,36,46,37,20,15,16,2,88,163,8,36,38,55,8,128,
+8,2,14,223,0,33,49,80,159,36,47,37,20,15,16,2,247,22,69,80,159,
+36,48,37,20,15,16,2,248,22,18,74,109,111,100,117,108,101,45,108,111,97,
+100,105,110,103,80,159,36,49,37,20,15,16,2,11,80,158,36,50,20,15,16,
+2,11,80,158,36,51,20,15,16,2,32,0,88,163,36,38,8,25,11,2,19,
+222,33,55,80,159,36,52,37,20,15,16,2,11,80,158,36,53,20,15,16,2,
+27,11,20,19,158,36,90,159,37,10,89,161,37,36,10,20,25,96,2,21,88,
+163,8,36,37,51,8,128,2,9,224,2,1,33,56,88,163,36,39,49,11,9,
+223,0,33,57,88,163,36,40,8,28,16,2,8,176,242,8,187,241,9,224,2,
+1,33,66,207,80,159,36,54,37,20,15,16,2,88,163,36,36,45,8,240,66,
+0,14,2,2,23,223,0,33,67,80,159,36,59,37,20,15,16,2,88,163,8,
+36,36,45,8,240,0,0,10,2,2,24,223,0,33,68,80,159,36,8,24,37,
+96,29,94,2,4,68,35,37,107,101,114,110,101,108,11,29,94,2,4,69,35,
+37,109,105,110,45,115,116,120,11,2,5,2,22,9,9,9,36,0};
+    EVAL_ONE_SIZED_STR((char *)expr, 6149);
   }
   {
-    SHARED_OK static MZCOMPILED_STRING_FAR unsigned char expr[] = {35,126,7,53,46,50,46,48,46,51,0,0,0,0,0,0,0,0,0,0,0,
+    SHARED_OK static MZCOMPILED_STRING_FAR unsigned char expr[] = {35,126,7,53,46,50,46,48,46,52,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,11,0,0,0,1,0,0,10,0,16,0,29,
 0,44,0,58,0,78,0,90,0,104,0,118,0,170,0,0,0,94,1,0,0,
 69,35,37,98,117,105,108,116,105,110,65,113,117,111,116,101,29,94,2,2,67,
diff --git a/src/racket/src/env.c b/src/racket/src/env.c
index 11dd683765..5fcde6b89d 100644
--- a/src/racket/src/env.c
+++ b/src/racket/src/env.c
@@ -56,6 +56,9 @@ READ_ONLY static Scheme_Env    *futures_env;
 THREAD_LOCAL_DECL(static int builtin_ref_counter);
 THREAD_LOCAL_DECL(static int intdef_counter);
 
+THREAD_LOCAL_DECL(static Scheme_Bucket_Table *literal_string_table);
+THREAD_LOCAL_DECL(static Scheme_Bucket_Table *literal_number_table);
+
 /* local functions */
 static void make_kernel_env(void);
 
@@ -489,6 +492,11 @@ static Scheme_Env *place_instance_init(void *stack_base, int initial_main_os_thr
 
   scheme_init_foreign(env);
 
+  REGISTER_SO(literal_string_table);
+  REGISTER_SO(literal_number_table);
+  literal_string_table = scheme_make_weak_equal_table();
+  literal_number_table = scheme_make_weak_eqv_table();
+
   scheme_starting_up = 1; /* in case it's not set already */
 
   scheme_add_embedded_builtins(env);
@@ -1438,6 +1446,36 @@ const char *scheme_look_for_primitive(void *code)
   return NULL;
 }
 
+/*========================================================================*/
+/*                  intern literal strings and numbers                    */
+/*========================================================================*/
+
+Scheme_Object *scheme_intern_literal_string(Scheme_Object *str)
+{
+  Scheme_Bucket *b;
+
+  scheme_start_atomic();
+  b = scheme_bucket_from_table(literal_string_table, (const char *)str);
+  scheme_end_atomic_no_swap();
+  if (!b->val)
+    b->val = scheme_true;
+
+  return(Scheme_Object *)HT_EXTRACT_WEAK(b->key);
+}
+
+Scheme_Object *scheme_intern_literal_number(Scheme_Object *num)
+{
+  Scheme_Bucket *b;
+
+  scheme_start_atomic();
+  b = scheme_bucket_from_table(literal_number_table, (const char *)num);
+  scheme_end_atomic_no_swap();
+  if (!b->val)
+    b->val = scheme_true;
+
+  return(Scheme_Object *)HT_EXTRACT_WEAK(b->key);
+}
+
 /*========================================================================*/
 /*             run-time and expansion-time Racket interface               */
 /*========================================================================*/
diff --git a/src/racket/src/hash.c b/src/racket/src/hash.c
index ff82303822..6e848aedfc 100644
--- a/src/racket/src/hash.c
+++ b/src/racket/src/hash.c
@@ -1180,6 +1180,11 @@ static uintptr_t equal_hash_key(Scheme_Object *o, uintptr_t k, Hash_Info *hi)
       
       return k;
     }
+  case scheme_regexp_type:
+    {
+      o = scheme_regexp_source(o);
+      break;
+    }
   case scheme_structure_type:
   case scheme_proc_struct_type:
     {
@@ -1605,6 +1610,11 @@ static uintptr_t equal_hash_key2(Scheme_Object *o, Hash_Info *hi)
     
       return k;
     }
+  case scheme_regexp_type:
+    {
+      o = scheme_regexp_source(o);
+      goto top;
+    }
   case scheme_structure_type:
   case scheme_proc_struct_type:
     {
diff --git a/src/racket/src/mzmark_type.inc b/src/racket/src/mzmark_type.inc
index a5767708b3..d724ef73fb 100644
--- a/src/racket/src/mzmark_type.inc
+++ b/src/racket/src/mzmark_type.inc
@@ -1661,7 +1661,7 @@ static int thread_val_SIZE(void *p, struct NewGC *gc) {
 
 static int thread_val_MARK(void *p, struct NewGC *gc) {
   Scheme_Thread *pr = (Scheme_Thread *)p;
-  
+
   gcMARK2(pr->next, gc);
   gcMARK2(pr->prev, gc);
 
@@ -1775,7 +1775,7 @@ static int thread_val_MARK(void *p, struct NewGC *gc) {
 
 static int thread_val_FIXUP(void *p, struct NewGC *gc) {
   Scheme_Thread *pr = (Scheme_Thread *)p;
-  
+
   gcFIXUP2(pr->next, gc);
   gcFIXUP2(pr->prev, gc);
 
diff --git a/src/racket/src/mzmarksrc.c b/src/racket/src/mzmarksrc.c
index d49442af0e..1fd733b215 100644
--- a/src/racket/src/mzmarksrc.c
+++ b/src/racket/src/mzmarksrc.c
@@ -640,7 +640,7 @@ syntax_compiler {
 thread_val {
  mark:
   Scheme_Thread *pr = (Scheme_Thread *)p;
-  
+
   gcMARK2(pr->next, gc);
   gcMARK2(pr->prev, gc);
 
diff --git a/src/racket/src/optimize.c b/src/racket/src/optimize.c
index 79846dc886..136b9f654b 100644
--- a/src/racket/src/optimize.c
+++ b/src/racket/src/optimize.c
@@ -2487,27 +2487,47 @@ static Scheme_Object *optimize_sequence(Scheme_Object *o, Optimize_Info *info, i
   return (Scheme_Object *)s;
 }
 
+XFORM_NONGCING static int small_inline_number(Scheme_Object *o)
+{
+  if (SCHEME_BIGNUMP(o))
+    return SCHEME_BIGLEN(o) < 32;
+  else if (SCHEME_COMPLEXP(o))
+    return (small_inline_number(scheme_complex_real_part(o))
+            && small_inline_number(scheme_complex_imaginary_part(o)));
+  else if (SCHEME_RATIONALP(o))
+    return (small_inline_number(scheme_rational_numerator(o))
+            && small_inline_number(scheme_rational_denominator(o)));
+  else
+    return 1;
+}
+
+#define STR_INLINE_LIMIT 256
+
 int scheme_compiled_duplicate_ok(Scheme_Object *fb, int cross_module)
 {
   return (SCHEME_VOIDP(fb)
 	  || SAME_OBJ(fb, scheme_true)
 	  || SCHEME_FALSEP(fb)
-	  || (SCHEME_SYMBOLP(fb) && (!cross_module || !SCHEME_SYM_WEIRDP(fb)))
-	  || SCHEME_KEYWORDP(fb)
+	  || (SCHEME_SYMBOLP(fb) 
+              && (!cross_module || (!SCHEME_SYM_WEIRDP(fb)
+                                    && (SCHEME_SYM_LEN(fb) < STR_INLINE_LIMIT))))
+	  || (SCHEME_KEYWORDP(fb)
+              && (!cross_module || (SCHEME_KEYWORD_LEN(fb) < STR_INLINE_LIMIT)))
 	  || SCHEME_EOFP(fb)
 	  || SCHEME_INTP(fb)
 	  || SCHEME_NULLP(fb)
-	  || (SCHEME_CHARP(fb) && (SCHEME_CHAR_VAL(fb) < 256))
 	  || SAME_TYPE(SCHEME_TYPE(fb), scheme_local_type)
-          || (!cross_module
-              &&
-              /* Values that are hashed by the printer to avoid
-                 duplication: */
-              (SCHEME_CHAR_STRINGP(fb)
-               || SCHEME_BYTE_STRINGP(fb)
-               || SAME_TYPE(SCHEME_TYPE(fb), scheme_regexp_type)
-               || SCHEME_NUMBERP(fb)
-               || SCHEME_PRIMP(fb))));
+          || SCHEME_PRIMP(fb)
+          /* Values that are hashed by the printer and/or interned on 
+             read to avoid duplication: */
+	  || SCHEME_CHARP(fb)
+          || (SCHEME_CHAR_STRINGP(fb) 
+              && (!cross_module || (SCHEME_CHAR_STRLEN_VAL(fb) < STR_INLINE_LIMIT)))
+          || (SCHEME_BYTE_STRINGP(fb)
+              && (!cross_module || (SCHEME_BYTE_STRLEN_VAL(fb) < STR_INLINE_LIMIT)))
+          || SAME_TYPE(SCHEME_TYPE(fb), scheme_regexp_type)
+          || (SCHEME_NUMBERP(fb)
+              && (!cross_module || small_inline_number(fb))));
 }
 
 static int equivalent_exprs(Scheme_Object *a, Scheme_Object *b)
diff --git a/src/racket/src/read.c b/src/racket/src/read.c
index 32ed9c1dde..c080820ce6 100644
--- a/src/racket/src/read.c
+++ b/src/racket/src/read.c
@@ -312,6 +312,8 @@ static Scheme_Object *readtable_mapping(int argc, Scheme_Object **argv);
 static Scheme_Object *current_readtable(int argc, Scheme_Object **argv);
 static Scheme_Object *current_reader_guard(int argc, Scheme_Object **argv);
 
+static Scheme_Object *read_intern(int argc, Scheme_Object **argv);
+
 /* A list stack is used to speed up the creation of intermediate lists
    during .zo reading. */
 
@@ -499,6 +501,8 @@ void scheme_init_read(Scheme_Env *env)
   GLOBAL_FOLDING_PRIM("readtable?",         readtable_p,        1, 1, 1,    env);
   GLOBAL_PRIM_W_ARITY2("readtable-mapping", readtable_mapping,  2, 2, 3, 3, env);
 
+  GLOBAL_NONCM_PRIM("read-intern-literal", read_intern, 1, 1, env);
+
   if (getenv("PLT_DELAY_FROM_ZO")) {
     use_perma_cache = 0;
   }
@@ -1466,6 +1470,8 @@ read_inner_inner(Scheme_Object *port, Scheme_Object *stxsrc, Scheme_Hash_Table *
 		  return NULL;
 		}
 
+                str = scheme_intern_literal_string(str);
+
 		if (stxsrc)
 		  str = scheme_make_stx_w_offset(str, line, col, pos, SPAN(port, pos), stxsrc, STX_SRCTAG);
 
@@ -3007,8 +3013,10 @@ read_string(int is_byte, Scheme_Object *port,
     s[i] = 0;
     result = scheme_make_immutable_sized_byte_string(s, i, 0);
   }
+  result = scheme_intern_literal_string(result);
   if (stxsrc)
     result =  scheme_make_stx_w_offset(result, line, col, pos, SPAN(port, pos), stxsrc, STX_SRCTAG);
+
   return result;
 }
 
@@ -3097,9 +3105,11 @@ read_here_string(Scheme_Object *port, Scheme_Object *stxsrc,
 
   str = scheme_make_sized_char_string(s, len, 1);
 
+  str = scheme_intern_literal_string(str);
+  
   if (stxsrc)
     str = scheme_make_stx_w_offset(str, line, col, pos, SPAN(port, pos), stxsrc, STX_SRCTAG);
-  
+
   return str;
 }
 
@@ -3419,6 +3429,8 @@ read_number_or_symbol(int init_ch, int skip_rt, Scheme_Object *port,
 			   port, NULL, 0,
 			   stxsrc, line, col, pos, SPAN(port, pos),
 			   indentation);
+    if (!SCHEME_INTP(o))
+      o = scheme_intern_literal_number(o);
   }
 
   if (SAME_OBJ(o, scheme_false)) {
@@ -3553,6 +3565,14 @@ static int u_strcmp(mzchar *s, const char *_t)
   return 0;
 }
 
+static Scheme_Object *make_interned_char(int ch)
+{
+  if (ch < 256)
+    return scheme_make_character(ch);
+  else
+    return scheme_intern_literal_number(scheme_make_char(ch));
+}
+
 /* "#\" has been read */
 static Scheme_Object *
 read_character(Scheme_Object *port,
@@ -3591,7 +3611,7 @@ read_character(Scheme_Object *port,
 
     ch = ((ch - '0') << 6) + ((next - '0') << 3) + (last - '0');
 
-    return scheme_make_char(ch);
+    return make_interned_char(ch);
   }
 
   if (((ch == 'u') || (ch == 'U')) && NOT_EOF_OR_SPECIAL(next) && scheme_isxdigit(next)) {
@@ -3691,7 +3711,7 @@ read_character(Scheme_Object *port,
 		    "read: expected a character after #\\");
   }
 
-  return scheme_make_char(ch);
+  return make_interned_char(ch);
 }
 
 /*========================================================================*/
@@ -3800,6 +3820,39 @@ static Scheme_Object *read_hash(Scheme_Object *port, Scheme_Object *stxsrc,
   }
 }
 
+/*========================================================================*/
+/*                               intern                                   */
+/*========================================================================*/
+
+static Scheme_Object *read_intern(int argc, Scheme_Object **argv)
+{
+  return scheme_read_intern(argv[0]);
+}
+
+Scheme_Object *scheme_read_intern(Scheme_Object *o)
+{
+  if (!SCHEME_INTP(o) && SCHEME_NUMBERP(o))
+    o = scheme_intern_literal_number(o);
+  else if (SCHEME_CHAR_STRINGP(o)) {
+    if (!SCHEME_IMMUTABLEP(o))
+      o = scheme_make_immutable_sized_char_string(SCHEME_CHAR_STR_VAL(o),
+                                                  SCHEME_CHAR_STRLEN_VAL(o),
+                                                  1);
+    o = scheme_intern_literal_string(o);
+  } else if (SCHEME_BYTE_STRINGP(o)) {
+    if (!SCHEME_IMMUTABLEP(o))
+      o = scheme_make_immutable_sized_byte_string(SCHEME_BYTE_STR_VAL(o),
+                                                  SCHEME_BYTE_STRLEN_VAL(o),
+                                                  1);
+    o = scheme_intern_literal_string(o);
+  } else if (SAME_TYPE(SCHEME_TYPE(o), scheme_regexp_type))
+    o = scheme_intern_literal_string(o);
+  else if (SCHEME_CHARP(o) && (SCHEME_CHAR_VAL(o) >= 256))
+    o = scheme_intern_literal_number(o);
+
+  return o;
+}
+
 /*========================================================================*/
 /*                               utilities                                */
 /*========================================================================*/
@@ -4289,6 +4342,7 @@ static Scheme_Object *read_compact(CPort *port, int use_stack)
       RANGE_CHECK_GETS(l);
       s = read_compact_chars(port, buffer, BLK_BUF_SIZE, l);
       v = scheme_make_immutable_sized_byte_string(s, l, l < BLK_BUF_SIZE);
+      v = scheme_intern_literal_string(v);
       break;
     case CPT_CHAR_STRING:
       {
@@ -4302,6 +4356,7 @@ static Scheme_Object *read_compact(CPort *port, int use_stack)
 	scheme_utf8_decode_all((const unsigned char *)s, el, us, 0);
 	us[l] = 0;
 	v = scheme_make_immutable_sized_char_string(us, l, 0);
+        v = scheme_intern_literal_string(v);
       }
       break;
     case CPT_CHAR:
diff --git a/src/racket/src/regexp.c b/src/racket/src/regexp.c
index 80cc1e55fa..55c9f89cd5 100644
--- a/src/racket/src/regexp.c
+++ b/src/racket/src/regexp.c
@@ -5949,6 +5949,11 @@ int scheme_regexp_is_byte(Scheme_Object *re)
   return !(((regexp *)re)->flags & REGEXP_IS_UTF8);
 }
 
+int scheme_regexp_is_pregexp(Scheme_Object *re)
+{
+  return !!(((regexp *)re)->flags & REGEXP_IS_PCRE);
+}
+
 #ifdef MZ_PRECISE_GC
 START_XFORM_SKIP;
 #include "mzmark_regexp.inc"
diff --git a/src/racket/src/schminc.h b/src/racket/src/schminc.h
index 1c0515a881..01419e4f4f 100644
--- a/src/racket/src/schminc.h
+++ b/src/racket/src/schminc.h
@@ -13,7 +13,7 @@
 
 #define USE_COMPILED_STARTUP 1
 
-#define EXPECTED_PRIM_COUNT 1040
+#define EXPECTED_PRIM_COUNT 1041
 #define EXPECTED_UNSAFE_COUNT 78
 #define EXPECTED_FLFXNUM_COUNT 68
 #define EXPECTED_FUTURES_COUNT 11
diff --git a/src/racket/src/schpriv.h b/src/racket/src/schpriv.h
index 2c9272c11b..665946abbb 100644
--- a/src/racket/src/schpriv.h
+++ b/src/racket/src/schpriv.h
@@ -692,6 +692,9 @@ struct Scheme_Hash_Tree
 
 #define SCHEME_HASHTR_FLAGS(tr) MZ_OPT_HASH_KEY(&(tr)->iso)
 
+Scheme_Object *scheme_intern_literal_string(Scheme_Object *str);
+Scheme_Object *scheme_intern_literal_number(Scheme_Object *num);
+
 /*========================================================================*/
 /*                              structs                                   */
 /*========================================================================*/
@@ -2121,6 +2124,7 @@ void scheme_install_type_reader(Scheme_Type type, Scheme_Type_Reader f);
 void scheme_install_type_writer(Scheme_Type type, Scheme_Type_Writer f);
 
 Scheme_Object *scheme_make_default_readtable(void);
+Scheme_Object *scheme_read_intern(Scheme_Object *o);
 
 Scheme_Object *_scheme_apply_from_native(Scheme_Object *rator,
 					 int argc,
@@ -3603,6 +3607,7 @@ void scheme_bad_vec_index(char *name, Scheme_Object *i,
                           intptr_t bottom, intptr_t len);
 
 Scheme_Bucket_Table *scheme_make_weak_equal_table(void);
+Scheme_Bucket_Table *scheme_make_weak_eqv_table(void);
 Scheme_Bucket_Table *scheme_make_nonlock_equal_bucket_table(void);
 
 int scheme_hash_table_equal_rec(Scheme_Hash_Table *t1, Scheme_Hash_Table *t2, void *eql);
@@ -3619,6 +3624,7 @@ void scheme_reset_hash_table(Scheme_Hash_Table *ht, int *history);
 
 Scheme_Object *scheme_regexp_source(Scheme_Object *re);
 int scheme_regexp_is_byte(Scheme_Object *re);
+int scheme_regexp_is_pregexp(Scheme_Object *re);
 Scheme_Object *scheme_make_regexp(Scheme_Object *str, int byte, int pcre, int * volatile result_is_err_string);
 int scheme_is_pregexp(Scheme_Object *o);
 void scheme_clear_rx_buffers(void);
diff --git a/src/racket/src/schvers.h b/src/racket/src/schvers.h
index b35ffebb89..6f539b375c 100644
--- a/src/racket/src/schvers.h
+++ b/src/racket/src/schvers.h
@@ -13,12 +13,12 @@
    consistently.)
 */
 
-#define MZSCHEME_VERSION "5.2.0.3"
+#define MZSCHEME_VERSION "5.2.0.4"
 
 #define MZSCHEME_VERSION_X 5
 #define MZSCHEME_VERSION_Y 2
 #define MZSCHEME_VERSION_Z 0
-#define MZSCHEME_VERSION_W 3
+#define MZSCHEME_VERSION_W 4
 
 #define MZSCHEME_VERSION_MAJOR ((MZSCHEME_VERSION_X * 100) + MZSCHEME_VERSION_Y)
 #define MZSCHEME_VERSION_MINOR ((MZSCHEME_VERSION_Z * 1000) + MZSCHEME_VERSION_W)
diff --git a/src/racket/src/syntax.c b/src/racket/src/syntax.c
index efc9354cdc..964a2cc72d 100644
--- a/src/racket/src/syntax.c
+++ b/src/racket/src/syntax.c
@@ -7367,6 +7367,8 @@ static Scheme_Object *datum_to_syntax_inner(Scheme_Object *o,
 
     result = (Scheme_Object *)s;
   } else {
+    if (!wraps)
+      o = scheme_read_intern(o);
     result = o;
   }