Fixed various spelling errors.

collects/2htdp/tests/image-equality-performance-htdp.rkt

@@ -411,7 +411,7 @@ Also added the timing code at the end.
 
 
 ;;purpose :given the board ,square to be played,column and row label and returns a new board 
-;;with the square to be  played at the position reffered
+;;with the square to be  played at the position referred
 ;; play-on-board : board square symbol symbol -> board
 
 ;;test

collects/2htdp/tests/image-equality-performance.rkt

@@ -416,7 +416,7 @@ Also added the timing code at the end.
 
 
 ;;purpose :given the board ,square to be played,column and row label and returns a new board 
-;;with the square to be  played at the position reffered
+;;with the square to be  played at the position referred
 ;; play-on-board : board square symbol symbol -> board
 
 ;;test

collects/compiler/private/vmphase.rkt

@@ -803,7 +803,7 @@
 		 ;; distinguish between tail & non-tail calls
 		 ;; implement tail calls to "simple" primitives a regular calls
 		 ;; no need to pass anything to tail here because it's already
-		 ;;  a tail value if its a tail-apply
+		 ;;  a tail value if it's a tail-apply
 		 ;; the vm-optimizer will refine the multi-ness of this application,
 		 ;;  and worry about inter & intra-vehicle calls
 		 ;;

collects/embedded-gui/doc.txt

@@ -257,7 +257,7 @@ alignment<%>.
 
 _stretchable-editor-snip-mixin_ gives an editor snip the
 _stretchable-snip<%>_ interface allowing it to be stretched
-to fit it's alignment-parent<%>'s alloted width. Stretchable
+to fit its alignment-parent<%>'s alloted width. Stretchable
 snips are useful as the snip of a snip-wrapper%.
 
 _stretchable-editor-snip%_ is (stretcable-editor-snip-mixin editor-snip%)

collects/embedded-gui/scribblings/embedded-gui.scrbl

@@ -81,7 +81,7 @@ t   hat are labeled from a particular set of strings.}
 
 Sets the tabbing order of @scheme[tabbable-text<%>]s by setting each
 text's @method[tabbable-text<%> set-ahead] and
-@method[tabbable-text<%> set-back] thunks to point to it's neighbor in
+@method[tabbable-text<%> set-back] thunks to point to its neighbor in
 the argument list.}
 
 

collects/framework/main.rkt

@@ -802,7 +802,7 @@
                          @scheme[filename].
                          @itemize[
                            @item{If a handler is found, it is applied to
-                                 @scheme[filename] and it's result is the final
+                                 @scheme[filename] and its result is the final
                                  result.}
                            @item{If not, @scheme[make-default] is used.}]}]}
       @item{If @scheme[filename] is @scheme[#f], @scheme[make-default] is

collects/framework/private/scheme.rkt

@@ -604,7 +604,7 @@
               [(not contains)
                ;; Something went wrong matching. Should we get here?
                (do-indent 0)]
-              #;  ;; disable this to accomodate PLAI programs; return to this when a #lang capability is set up.
+              #;  ;; disable this to accommodate PLAI programs; return to this when a #lang capability is set up.
               [(curley-brace-sexp?)
                ;; when we are directly inside an sexp that uses {}s,
                ;; we indent in a more C-like fashion (to help Scribble)

collects/frtime/doc.txt

@@ -278,7 +278,7 @@ Generates a mixin that sends an event on stream-name when
 callback is called. The class has an init field called
 [stream-name]-event-processor, which is a function. The
 function is applied to an event stream that has an
-occurence every time callback is called, and the value
+occurrence every time callback is called, and the value
 of the events is a list of the arguments to the callback.
 The public method (get-[stream-name]) is a public method
 of the resulting class that gets the result of applying

collects/frtime/gui/doc.txt

@@ -32,7 +32,7 @@ when the event should just be the value of the first
 argument of the callback. split-*-events/type sets up an
 appropriate split (see FrTime docs for split information,
 GRacket docs for key-event codes and mouse-event types) over
-the type of event occurence.
+the type of event occurrence.
 
                                                     
 events->callbacks and callbacks->args-evts are the backbone

collects/honu/core/private/honu.rkt

@@ -1026,7 +1026,7 @@
             (if (eq? #t (syntax-e #'type-name))
                 ;; Context guarantees correct use, as long as we report our type:
                 #'(honu-report-type val orig-expr val-type protect-id)
-                ;; Context gurantees use at a particular type...
+                ;; Context guarantees use at a particular type...
                 (if (check-compatible-type #'val #'orig-expr #'val-type #'type-name type-mismatch)
                     ;; Declared type subsumes actual type:
                     (if (and (syntax-e #'protect-id)

collects/htdp/tests/guess-gui.rkt

@@ -11,7 +11,7 @@
 
 ;; convert : (listof DIGIT) -> number 
 ;; to convert a list of digits into a number 
-;; the leading digit is the least signifcant one
+;; the leading digit is the least significant one
 (define (convert alod)
   (cond
     [(empty? alod) 0]

collects/lazy/force.rkt

@@ -9,7 +9,7 @@
 (define ~? promise?)
 
 ;; force a top-level list structure; works with improper lists (will force the
-;; dotted item when it checks if its a pair); does not handle cycles
+;; dotted item when it checks if it's a pair); does not handle cycles
 (define (!list x)
   (let ([x (! x)])
     (if (list? x) ; cheap check,

collects/mred/private/wx/cocoa/gauge.rkt

@@ -33,7 +33,7 @@
   (super-new [parent parent]
              [cocoa (let ([cocoa (as-objc-allocation
                                   ;; Beware that a guage may be finally deallocated in 
-                                  ;; a seperate OS-level thread
+                                  ;; a separate OS-level thread
                                   (tell (tell MyProgressIndicator alloc) init))])
                       (tellv cocoa setIndeterminate: #:type _BOOL #f)
                       (tellv cocoa setMaxValue: #:type _double* rng)

collects/mred/private/wx/gtk/frame.rkt

@@ -216,7 +216,7 @@
         (adjust-client-delta 0 h))
       ;; Hack: calls back into the mred layer to re-compute
       ;;  sizes. By calling this early enough, the frame won't 
-      ;;  grow if it doesn't have to grow to accomodate the menu bar.
+      ;;  grow if it doesn't have to grow to accommodate the menu bar.
       (send this resized))
 
     (define saved-enforcements (vector 0 0 -1 -1))

collects/mred/private/wx/win32/gl-context.rkt

@@ -137,7 +137,7 @@
                              PFD_SUPPORT_GDI)
                 (bitwise-ior PFD_DRAW_TO_WINDOW)))
            PFD_TYPE_RGBA ; color type
-           (if offscreen? 32 24) ; prefered color depth
+           (if offscreen? 32 24) ; preferred color depth
            0 0 0 0 0 0 ; color bits (ignored)
            0 ; no alpha buffer
            0 ; alpha bits (ignored)

collects/mred/private/wxme/editor-snip.rkt

@@ -111,7 +111,7 @@
 
     (when (and s-admin
                (has-flag? s-flags USES-BUFFER-PATH))
-      ;; propogate a filename change:
+      ;; propagate a filename change:
       (if (and editor
                (no-permanent-filename? editor))
           (let ([b (send s-admin get-editor)])

collects/mred/private/wxme/mline.rkt

@@ -1039,7 +1039,7 @@ Debugging tools:
               [next (mline-next mline)])
           (when (or (not (eq? (mline-snip next) asnip))
                     (not (has-flag? (snip->flags (mline-last-snip next)) NEWLINE)))
-            ;; Effect can propogate to more lines, merging the
+            ;; Effect can propagate to more lines, merging the
             ;; next several. (Handle prefixing the remains of the source of
             ;; the extension to this line onto the next line. Implemented
             ;; as the next line eating the next->next line.) 

collects/mrlib/image-core.rkt

@@ -255,7 +255,7 @@ has been moved out).
                  (or (and (not (skip-image-equality-fast-path))  ;; this is here to make testing more effective
                           (equal? (get-normalized-shape) (send that get-normalized-shape)))
                      (let ([w (+ 1 (round (inexact->exact (bb-right bb))))]    ;; some shapes (ie, rectangles) draw 1 outside the bounding box
-                           [h (+ 1 (round (inexact->exact (bb-bottom bb))))])  ;; so we make the bitmap slightly bigger to accomodate that.
+                           [h (+ 1 (round (inexact->exact (bb-bottom bb))))])  ;; so we make the bitmap slightly bigger to accommodate that.
                        (or ;(zero? w)
                            ;(zero? h)
                            (let ([bm1 (make-bitmap w h #t)]

collects/mrlib/private/aligned-pasteboard/geometry-managed-pasteboard.rkt

@@ -50,7 +50,7 @@
                        (get-aligned-min-sizes type (find-first-snip)))))
       
       ;; set-algined-min-sizes (-> void?)
-      ;; set the aligned min width and height of the pasteboard based on it's children snips
+      ;; set the aligned min width and height of the pasteboard based on its children snips
       (inherit in-edit-sequence?)
       (define/public (aligned-min-sizes-invalid)
         ;; This in-edit-sequence? is not sound. It causes me to percollate invalidation

collects/mrlib/private/image-core-bitmap.rkt

@@ -27,7 +27,7 @@ instead of this scaling code, we use the dc<%>'s scaling code.
  
                   
 ; bmbytes: a bytes which represents an image -- 
-; it's size is a multiple of 4, and each
+; its size is a multiple of 4, and each
 ; four consecutive bytes represent alpha,r,g,b.
 
                   

collects/mzlib/kw.rkt

@@ -128,7 +128,7 @@
        [else (ormap (lambda (k) (and (assq k rests) #t)) ; suggested?
                     (car (cddddr processed-spec)))])))
   (define (make-keyword-get-expr key rest default known-vars)
-    ;; expand (for id macros) and check if its a simple expression, because if
+    ;; expand (for id macros) and check if it's a simple expression, because if
     ;; it is, evaluation cannot have side-effects and we can use keyword-get*
     (define default*
       (local-expand default 'expression (cons #'#%app known-vars)))

collects/mzlib/thread.rkt

@@ -7,7 +7,7 @@
 
   #|
   t accepts a function, f, and creates a thread. It returns the thread and a
-  function, g. When g is applied it passes it's argument to f, and evaluates
+  function, g. When g is applied it passes its argument to f, and evaluates
   the call of f in the time of the thread that was created. Calls to g do not
   block.
   |#

collects/mzscheme/examples/README

@@ -28,7 +28,7 @@ end use the mzc `c-lambda', etc. forms.
    exceptions while evaluating a string. Demonstrates how to catch
    exceptions from C code.
 
- * bitmatrix.c - implements two-dimentional bit matrixes with some
+ * bitmatrix.c - implements two-dimensional bit matrixes with some
    operations. Demonstrates defining a new Scheme data type, data
    allocation, fancy integer type checking, general exception raising,
    and registering static variables. Also demonstrates supplying

collects/openssl/mzssl.rkt

@@ -185,7 +185,7 @@
   (define-mzscheme scheme_end_atomic (-> _void))
   (define-mzscheme scheme_make_custodian (_pointer -> _scheme))
 
-  ;; Make this bigger than 4096 to accomodate at least
+  ;; Make this bigger than 4096 to accommodate at least
   ;; 4096 of unencrypted data
   (define BUFFER-SIZE 8000)
 

collects/parser-tools/lex.rkt

@@ -252,7 +252,7 @@
                                       ;; including a match at the current state
                                       (longest-match-action 
                                        (vector-ref actions start-state))
-                                      ;; how many bytes preceed char
+                                      ;; how many bytes precede char
                                       (length-bytes 0)
                                       ;; how many characters have been read
                                       ;; including the one just read

collects/parser-tools/private-yacc/grammar.rkt

@@ -12,7 +12,7 @@
   (define-struct prod (lhs rhs index prec action) (make-inspector))
 
   ;; The dot-pos field is the index of the element in the rhs
-  ;; of prod that the dot immediately preceeds.
+  ;; of prod that the dot immediately precedes.
   ;; Thus 0 <= dot-pos <= (vector-length rhs).
   (define-struct item (prod dot-pos) (make-inspector))
   

collects/planet/private/short-syntax-helpers.rkt

@@ -38,7 +38,7 @@
 
 ;; parse-package : string (string -> 'a) -> (values string nat min-spec)
 ;; given a package specifier, returns the package name, the package major version, and a descriptor
-;; for the acceptible minor versions
+;; for the acceptable minor versions
 (define (parse-package package yell)
   (try-parsing package
                ([pkgname (get-to-next-colon-or-end)]

collects/plot/fit.rkt

@@ -15,24 +15,24 @@
 
   ; fit-int : (number* -> number) (list-of (symbol number)) (list-of (vector number [number] number number)) -> fit-result
   (define (fit-int function guesses data)
-    (let* ((independant-vars (- (procedure-arity function) (length guesses)))
+    (let* ((independent-vars (- (procedure-arity function) (length guesses)))
            (f-of-x-y (cond
-                       [(= 1 independant-vars)
+                       [(= 1 independent-vars)
                         (lambda (x y . rest)
                           (apply function x rest))]
-                       [(= 2 independant-vars)
+                       [(= 2 independent-vars)
                         function]
                        [else
-                        (error "Function provided is eitehr not of one or two independant variables or the number of
+                        (error "Function provided is either not of one or two independent variables or the number of
                         guesses given is incorrect")]))
            (x-vals (map vector-x data))
-           (y-vals (if (= 1 independant-vars)
+           (y-vals (if (= 1 independent-vars)
                        x-vals
                         (map vector-y data)))
-           (z-vals (if (= 1 independant-vars)
+           (z-vals (if (= 1 independent-vars)
                        (map vector-y data)
                        (map vector-z data)))
-           (err-vals (if (= 1 independant-vars)
+           (err-vals (if (= 1 independent-vars)
                          (map vector-z data)
                          (map (lambda (vec) (vector-ref vec 4)) data)))
            (result (fit-internal f-of-x-y x-vals y-vals z-vals err-vals (map cadr guesses))))

collects/plot/math.rkt

@@ -4,7 +4,7 @@
   
   (require mzlib/list mzlib/etc mzlib/math)
   
-  ; using vectors for n-dimentional points
+  ; using vectors for n-dimensional points
   
   ; vector-magnitude : (vectorof number) -> number
   ; computes the magnituded of the vector by using pythegorean theorem

collects/plot/plot.rkt

@@ -36,7 +36,7 @@
 
 ;; make-2d-renderer : (2d-view% -> void)
 ;; provides a user with the ability to create their own renderers
-;; without providing the implimentation
+;; without providing the implementation
 (define custom identity)
 
 ;;

collects/racket/private/serialize.rkt

@@ -415,7 +415,7 @@
 
   (define (lookup-shared! share n mod-map module-path-index-join)
     ;; The shared list is not necessarily in order of
-    ;;  refereds before referees. A `not-ready' object
+    ;;  referreds before referees. A `not-ready' object
     ;;  indicates a reference before a value is ready,
     ;;  so we need to recur to make it ready. Cycles
     ;;  have been broken, though, so we don't run into

collects/redex/redex.scrbl

@@ -2438,7 +2438,7 @@ The line, line-span, column, and column-span correspond to
 the logical spacing for the redex program, not the actual
 spacing that will be used when they are rendered. The
 logical spacing is only used when determining where to place
-typeset portions of the program. In the absense of any
+typeset portions of the program. In the absence of any
 rewriters, these numbers correspond to the line and column
 numbers in the original program.
 

collects/scribblings/framework/canvas.scrbl

@@ -53,7 +53,7 @@
   Any
   @scheme[canvas%]
   that matches this interface will automatically
-  resize selected snips when it's size changes. Use
+  resize selected snips when its size changes. Use
   @method[canvas:wide-snip<%> add-tall-snip]
   and
   @method[canvas:wide-snip<%> add-wide-snip]

collects/scribblings/framework/editor.scrbl

@@ -346,7 +346,7 @@
   the filesystem.
 
   The class that this mixin produces uses the same initialization
-  arguments as it's input.
+  arguments as its input.
   @defmethod*[#:mode override (((set-filename (name string) (temp? boolean |#f|)) void))]{
 
     Updates the filename on each frame displaying this editor, for each

collects/scribblings/framework/text.scrbl

@@ -156,7 +156,7 @@
   objects in the framework.
 
   The class that this mixin produces uses the same initialization
-  arguments as it's input.
+  arguments as its input.
   @defmethod*[#:mode override (((on-paint (before? any/c) (dc (is-a?/c dc<%>)) (left real?) (top real?) (right real?) (bottom real?) (dx real?) (dy real?) (draw-caret (one-of/c (quote no-caret) (quote show-inactive-caret) (quote show-caret)))) void))]{
 
     Draws the rectangles installed by

collects/scribblings/guide/simple-syntax.scrbl

@@ -379,7 +379,7 @@ clearly written as follows:
 
 The use of square brackets for @racket[cond] clauses is a
 convention. In Racket, parentheses and square brackets are actually
-interchangable, as long as @litchar{(} is matched with @litchar{)} and
+interchangeable, as long as @litchar{(} is matched with @litchar{)} and
 @litchar{[} is matched with @litchar{]}. Using square brackets in a
 few key places makes Racket code even more readable.
 

collects/scribblings/raco/exe-api.scrbl

@@ -256,7 +256,7 @@ currently supported keys are as follows:
         @racket[#t] means that, to the degree that the generated
         executable must refer to another, it can use a relative path
         (so the executables can be moved together, but not
-        seperately); a @racket[#f] value (the default) means that
+        separately); a @racket[#f] value (the default) means that
         absolute paths should be used (so the generated executable can
         be moved).}
 

collects/scribblings/reference/contracts.scrbl

@@ -1088,8 +1088,8 @@ on integers looks like this:
 
 Although these projections have the right error behavior,
 they are not quite ready for use as contracts, because they
-do not accomodate blame, and do not provide good error
+do not accommodate blame, and do not provide good error
-messages. In order to accomodate these, contracts do not
+messages. In order to accommodate these, contracts do not
 just use simple projections, but use functions that accept a
 @deftech{blame object} encapsulating
 the names of two parties that are the candidates for blame,

collects/scribblings/reference/control-lib.scrbl

@@ -173,7 +173,7 @@ The essential reduction rules are:
                                    (lambda (_v) (reset0 _E[_v])))
 ]
 
-The @scheme[reset0] and @scheme[prompt0] forms are interchangable.
+The @scheme[reset0] and @scheme[prompt0] forms are interchangeable.
 Furthermore, the following reductions apply:
 
 @schemeblock[

collects/scribblings/reference/networking.scrbl

@@ -45,7 +45,7 @@ accepts only connections to @racket["127.0.0.1"] (the loopback
 interface) from the local machine.
 
 (Racket implements a listener with multiple sockets, if necessary, to
-accomodate multiple addresses with different protocol families. Under
+accommodate multiple addresses with different protocol families. Under
 Linux, if @racket[hostname] maps to both IPv4 and IPv6 addresses, then
 the behavior depends on whether IPv6 is supported and IPv6 sockets can
 be configured to listen to only IPv6 connections: if IPv6 is not

collects/scribblings/reference/reader.scrbl

@@ -322,7 +322,7 @@ the recursive reads.
 If the reader finds two data between the matching parentheses
 that are separated by a delimited @litchar{.}, then it creates a
 pair. More generally, if it finds two or more data where the
-last is preceeded by a delimited @litchar{.}, then it constructs
+last is preceded by a delimited @litchar{.}, then it constructs
 nested pairs: the next-to-last element is paired with the last, then
 the third-to-last is paired with that pair, and so on.
 

collects/scribblings/tools/rep.scrbl

@@ -60,9 +60,9 @@ submitted at the prompt.
 @methimpl{
 
 The function @scheme[run-loop] is called. It is expected to loop, calling
-it's argument with a thunk that corresponds to the user's
+its argument with a thunk that corresponds to the user's
-evaluation. It should call it's argument once for each expression the
+evaluation. It should call its argument once for each expression the
-user is evaluating.  It should pass a thunk to it's argument that
+user is evaluating.  It should pass a thunk to its argument that
 actually does the users's evaluation.
 
 
@@ -297,7 +297,7 @@ This method resets the highlighting being displayed for this repl. See also:
            void?]{
 @methspec{
 
-This function runs it's arguments in the user evaluation thread. This
+This function runs its arguments in the user evaluation thread. This
 thread is the same as the user's eventspace main thread.
 
 See also  
@@ -369,7 +369,7 @@ interactions windows.}
 @definterface[drracket:rep:context<%> ()]{
 
 Objects that match this interface provide all of the services that the 
-@scheme[drracket:rep:text%] class needs to connect with it's context.
+@scheme[drracket:rep:text%] class needs to connect with its context.
 
 
 

collects/scribblings/tools/tools.scrbl

@@ -472,7 +472,7 @@ is bound to an extender function. In order to change the
 behavior of DrRacket, you can derive new classes from the
 standard classes for the frame, texts, canvases. Each
 extender accepts a function as input. The function it
-accepts must take a class as it's argument and return a
+accepts must take a class as its argument and return a
 classes derived from that class as its result. For example:
 
 @racketblock[

collects/sirmail/readr.rkt

@@ -2010,7 +2010,7 @@
                  (sleep 10)
                  (loop)))))))
 
-      ;; copied from framerok/private/frame.sss -- be sure to propogate fixes....
+      ;; copied from framerok/private/frame.sss -- be sure to propagate fixes....
       ;; or establish single point of control.
       (define (format-number n)
 	(if n

collects/srfi/26/cut.rkt

@@ -16,7 +16,7 @@
 ;    Given the arguments for the macro call to cut (or cute) as a syntax-list,
 ;  call build with four lists:
 ;    1) a list of names given to each <>-slot
-;    2) [cut] a list of the macro arguments, except that all occurences
+;    2) [cut] a list of the macro arguments, except that all occurrences
 ;       of a <>-slots have been substituted with the chosen name.
 ;    3) [cute] a list the names given to the exprs and the <>-slots
 ;    4) [cute] a list of lists of name-expression pairs, i.e. the bindings

collects/srfi/optional.rkt

@@ -1,6 +1,6 @@
 ;;;
 ;;; <optional.ss> ---- Let-optionals macros
-;;; Time-stamp: <02/07/15 09:25:27 solsona>
+;;; Time-stamp: <2011-02-02 11:44:21 dvanhorn>
 ;;;
 ;;; Usually, I would add a copyright notice, and the announce that
 ;;; this code is under the LGPL licence.  This code is been copied
@@ -39,7 +39,7 @@
 ;;
 ;; Commentary:
 ;;
-;; this is a port of commonly refered (in SRFI mostly) macros, and
+;; this is a port of commonly referred (in SRFI mostly) macros, and
 ;; utilities, to the PLT Scheme system.  I'm not sure if I should use
 ;; the word "port", because I hardly touched Olin Shivers' superiour
 ;; macros. :-)

collects/srpersist/doc.txt

@@ -1561,7 +1561,7 @@
      'sql-param-success-with-info
      'sql-param-error
      'sql-param-unused
-     'sql-param-diag-unavilable
+     'sql-param-diag-unavailable
 
 > (get-stmt-option hstmt option)
 

collects/stepper/private/lifting.rkt

@@ -262,7 +262,7 @@
               (loop (cdr ctx-list) next-defs next-body))))))
   
   ; lift-helper takes a syntax object and a split path and a list of syntax objects and breaks it up
-  ; iff its a let/rec, wrapping those before the split and those after the split around the list of syntax
+  ; iff it's a let/rec, wrapping those before the split and those after the split around the list of syntax
   ; objects
   ;  (->* (syntax? (union false? (listof number?)) (listof syntax?)) ((listof syntax?) syntax?))
   (define (lift-helper stx path so-far-defs)

collects/syntax-color/paren-tree.rkt

@@ -38,7 +38,7 @@
       ;; records whose type field is a symbol that indicates which type of
       ;; (opening or closing) parenthesis begins the range being mapped.
       ;; The length field indicates how many characters the actual parenthesis
-      ;; is.  In the special case that there is a region that is not preceeded
+      ;; is.  In the special case that there is a region that is not preceded
       ;; with a parenthesis (that is, the region before the first parenthesis in
       ;; a buffer), the type will be #f, and the length will be 0.
       
@@ -122,7 +122,7 @@
       ;; If it indicates an error, the first two results give the
       ;; starting and stoping positions for error highlighting.
       ;; If all three return #f, then there was no tree to search, or 
-      ;; the position did not immediately preceed an open.
+      ;; the position did not immediately precede an open.
       (define/public (match-forward pos)
         (send tree search! pos)
         (cond

collects/syntax/doc.txt

@@ -362,7 +362,7 @@ _modcode.ss_: getting module compiled code
   only a native-code non_loader version exists (i.e., `path' itself
   does not exist). A _loader extension is selected a last resort.
 
-  If an extension is prefered or is the only file that exists, it is
+  If an extension is preferred or is the only file that exists, it is
   supplied to `ext-proc' when `ext-proc' is #f, or an exception is
   raised (to report that an extension file cannot be used) when
   `ext-proc' is #f.

collects/syntax/scribblings/modcode.scrbl

@@ -58,7 +58,7 @@ are ignored, unless only a native-code non-@tt{_loader} version exists
 (i.e., @scheme[path] itself does not exist). A @tt{_loader} extension
 is selected a last resort.
 
-If an extension is prefered or is the only file that exists, it is
+If an extension is preferred or is the only file that exists, it is
 supplied to @scheme[ext-proc] when @scheme[ext-proc] is @scheme[#f],
 or an exception is raised (to report that an extension file cannot be
 used) when @scheme[ext-proc] is @scheme[#f].

collects/syntax/scribblings/parse/intro.scrbl

@@ -52,7 +52,7 @@ to what one would write using @scheme[syntax-rules] or perhaps
 ]
 
 Note the use of @scheme[...] and @scheme[...+] in the pattern;
-@scheme[...] means match zero or more repetitions of the preceeding
+@scheme[...] means match zero or more repetitions of the preceding
 pattern; @scheme[...+] means match one or more. Only @scheme[...] may
 be used in the template, however.
 

collects/teachpack/2htdp/scribblings/image.scrbl

@@ -95,7 +95,7 @@ Existing images can be rotated, scaled, flipped, and overlaid on top of each oth
   Adds a line to the image @racket[image], starting from the point (@racket[x1],@racket[y1])
   and going to the point (@racket[x2],@racket[y2]).
   Unlike @racket[scene+line], if the line passes outside of @racket[image], the image
-  gets larger to accomodate the line.
+  gets larger to accommodate the line.
   
   @image-examples[(add-line (ellipse 40 40 "outline" "maroon")
                             0 40 40 0 "maroon")
@@ -126,7 +126,7 @@ long the curve tries to stay with that angle. Larger numbers
 mean that the curve stays with the angle longer.
 
 Unlike @racket[scene+curve], if the line passes outside of @racket[image], the image
-  gets larger to accomodate the curve.
+  gets larger to accommodate the curve.
 
 
   @image-examples[(add-curve (rectangle 100 100 "solid" "black")

collects/tests/drracket/drracket-test-util.rkt

@@ -570,7 +570,7 @@
   
   ;; run-one/sync : (-> A) -> A
   ;; runs the thunk `f' as a test action, and
-  ;; waits for it to complete. Also propogates
+  ;; waits for it to complete. Also propagates
   ;; exceptions.
   (define (run-one/sync f)
     (not-on-eventspace-handler-thread 'repl-in-edit-sequence?)

collects/typed-scheme/scribblings/ts-reference.scrbl

@@ -442,7 +442,7 @@ can be used anywhere a definition form may be used.}
 the types @racket[t], and also provides all of the @racket[v]s.}
 
 @litchar{#{v : t}} This declares that the variable @racket[v] has type
-@racket[t].  This is legal only for binding occurences of @racket[_v].
+@racket[t].  This is legal only for binding occurrences of @racket[_v].
 
 @defform[(ann e t)]{Ensure that @racket[e] has type @racket[t], or
 some subtype.  The entire expression has type @racket[t].

collects/typed-scheme/typecheck/tc-app.rkt

@@ -657,7 +657,7 @@
      (match-let* ([(list last tys-r ...) (reverse (map tc-expr/t (syntax->list #'args)))]
                   [tys (reverse tys-r)])
        (ret (foldr make-Pair last tys)))]
-    ;; special case for `reverse' to propogate expected type info
+    ;; special case for `reverse' to propagate expected type info
     [(#%plain-app reverse arg)
      (match expected
        [(tc-result1: (Listof: _))

collects/unstable/scribblings/gui/slideshow.scrbl

@@ -159,7 +159,7 @@ Shades @scheme[pict] to show with @scheme[ratio] of its normal opacity; if
 These pict control flow operators decide which pict of several to use.  All
 branches are evaluated; the resulting pict is a combination of the pict chosen
 by normal conditional flow with @scheme[ghost] applied to all the other picts.
-The result is a picture large enough to accomodate each alternative, but showing
+The result is a picture large enough to accommodate each alternative, but showing
 only the chosen one.  This is useful for staged slides, as the pict chosen may
 change with each slide but its size and position will not.
 

collects/web-server/private/configure.rkt

@@ -740,7 +740,7 @@
            [copy-conf
             (lambda (from to)
               (let ([to-path (build-path-unless-absolute conf to)])
-                ; more here - check existance of from path
+                ; more here - check existence of from path
                 (copy-file* (build-path from-conf from) to-path)))])
       (copy-conf "passwords-refresh.html" (messages-passwords-refreshed messages))
       (copy-conf "servlet-refresh.html" (messages-servlets-refreshed messages))

collects/web-server/scribblings/contracts.scrbl

@@ -9,7 +9,7 @@
 @defmodule[web-server/servlet/servlet-structs]{
                                                
 Servlets communicate to the Web Server by returning HTTP responses. In order to
-accomodate lightweight programs (and backwards compatibility), the Web Server
+accommodate lightweight programs (and backwards compatibility), the Web Server
 provides an indirection from application-specific response formats and the internal
 HTTP response format, @racket[response].
 

collects/web-server/scribblings/web.scrbl

@@ -97,7 +97,7 @@ functions of interest for the servlet developer.
                    "+")))))))))
   ]
  Notice that in this example the result of the handlers are returned to the continuation of @racket[send/suspend/dispatch].
- However, it is very common that the return value of @racket[send/suspend/dispatch] is irrevelant in
+ However, it is very common that the return value of @racket[send/suspend/dispatch] is irrelevant in
  your application and you may think of it as ``embedding'' value-less callbacks. Here is the same example in this style:
  @racketblock[
   (define (count-dot-com i)

doc/release-notes/drracket/HISTORY.txt

@@ -873,7 +873,7 @@ GENERAL
   now it shows `('a 'a).
 
 - The portion of space between the definitions and
-  interactions window is now interactively changable.
+  interactions window is now interactively changeable.
 
 - the bug report form now connects to bugs.drscheme.org
   instead of cs.rice.edu directly, so earthlink users
@@ -962,7 +962,7 @@ General
  - files added to projects are now stored as relative files, 
    by default. (use project menu to change the default)
 
- - project files are saved using a platform-independant syntax for
+ - project files are saved using a platform-independent syntax for
    paths now.
 
  - Using file|open and choosing a project file (based on contents) will open

doc/release-notes/gracket/HISTORY.txt

@@ -1285,7 +1285,7 @@ System:
 
   Changed force-redraw to ignore refresh requests when the
   redraw-requesting window is not shown. Redraw requests are now
-  propogated to the top-level frame or dialog via child-redraw-request.
+  propagated to the top-level frame or dialog via child-redraw-request.
 - if your application is unititized, then you need to change the
   startup procedure. See the application startup section in the
   toolbox manual.
@@ -1655,7 +1655,7 @@ Bug fixes, especially Motif and memory bugs
 Rewrote editor line-maintenance
 Faster caret updating
 Upgraded garbage collector
-File format changed to accomodate nested buffers with
+File format changed to accommodate nested buffers with
   separate style lists
 Standard system standardized
 Code changes for compiling on MSWindows (almost works...)

doc/release-notes/racket/HISTORY.txt

@@ -1314,7 +1314,7 @@ Refined error messages
 Version 49, May 31, 1997 
 Multiple superclass inheritance is no longer supported
 Added (Java-ish) interfaces to object system
-class* syntax changed to accomodate interfaces and removed
+class* syntax changed to accommodate interfaces and removed
   multiple superclasses
 uq-ivar always takes two arguments; class is not a legal argument
 uq-make-generic accepts a class or an interface

doc/srfi-std/srfi-4.html

@@ -187,7 +187,7 @@ must be quoted just like heterogeneous vectors must be.  Homogeneous
 vectors can appear in quasiquotations but must not contain
 <code>unquote</code> or <code>unquote-splicing</code> forms
 (i.e. <code>`(,x #u8(1 2))</code> is legal but <code>`#u8(1 ,x
-2)</code> is not).  This restriction is to accomodate the many Scheme
+2)</code> is not).  This restriction is to accommodate the many Scheme
 systems that use the <code>read</code> procedure to parse programs.
 
 	<p></p>

doc/srfi-std/srfi-40.html

@@ -259,7 +259,7 @@ and even streams.  We expect the two constructors <code>nil</code> and
 <code>nil</code> and <code>cons</code> return a strict list, but the
 even <code>nil</code> and <code>cons</code> return promises.
 <code>Nil?</code>, <code>car</code> and <code>cdr</code> change to
-accomodate the underlying representation differences.
+accommodate the underlying representation differences.
 <code>Cutoff</code> is identical in the two versions, because it
 doesn't return a stream.
 </p>

doc/srfi-std/srfi-67/srfi-67.html

@@ -377,7 +377,7 @@ procedures, as explained in Section&nbsp;<a href="#node_sec_5">5</a>.
 Also note the implicit use of <tt>refine-compare</tt> in
 the <tt>bowl?</tt>-case.</p>
 <p>
-The preceeding example illustrates the main functionality of this SRFI.
+The preceding example illustrates the main functionality of this SRFI.
 For other examples, refer to Section&nbsp;<a href="#node_sec_4.4">4.4</a>,
 and to the file <tt>examples.scm</tt> included in the reference
 implementation.</p>

doc/srfi-std/srfi-98.html

@@ -51,7 +51,7 @@ environment variables.
 <p>Most operating systems provide a mechanism for passing auxiliary
 parameters implicitly to child processes.  Usually, this mechanism is
 called "the environment", and is conceptually a map from string names
-to string values.  The string names are called enviornment
+to string values.  The string names are called environment
 variables.</p>
 
 <p>Some applications rely on environment variables to modify their

src/foreign/libffi/src/dlmalloc.c

@@ -5088,7 +5088,7 @@ History:
         Wolfram Gloger (Gloger@lrz.uni-muenchen.de).
       * Use last_remainder in more cases.
       * Pack bins using idea from  colin@nyx10.cs.du.edu
-      * Use ordered bins instead of best-fit threshhold
+      * Use ordered bins instead of best-fit threshold
       * Eliminate block-local decls to simplify tracing and debugging.
       * Support another case of realloc via move into top
       * Fix error occuring when initial sbrk_base not word-aligned.

src/foreign/libffi/src/x86/ffi64.c

@@ -366,7 +366,7 @@ ffi_prep_cif_machdep (ffi_cif *cif)
 
   /* Go over all arguments and determine the way they should be passed.
      If it's in a register and there is space for it, let that be so. If
-     not, add it's size to the stack byte count.  */
+     not, add its size to the stack byte count.  */
   for (bytes = 0, i = 0, avn = cif->nargs; i < avn; i++)
     {
       if (examine_argument (cif->arg_types[i], classes, 0, &ngpr, &nsse) == 0

src/foreign/libffi/texinfo.tex

@@ -3,7 +3,7 @@
 % Load plain if necessary, i.e., if running under initex.
 \expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
 %
-\def\texinfoversion{2005-07-05.19}
+\def\texinfoversion{2011-02-02.11}
 %
 % Copyright (C) 1985, 1986, 1988, 1990, 1991, 1992, 1993, 1994, 1995,
 % 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software
@@ -415,7 +415,7 @@
 \def\argremovecomment#1\comment#2\ArgTerm{\argremovec #1\c\ArgTerm}
 \def\argremovec#1\c#2\ArgTerm{\argcheckspaces#1\^^M\ArgTerm}
 
-% Each occurence of `\^^M' or `<space>\^^M' is replaced by a single space.
+% Each occurrence of `\^^M' or `<space>\^^M' is replaced by a single space.
 %
 % \argremovec might leave us with trailing space, e.g.,
 %    @end itemize  @c foo
@@ -498,7 +498,7 @@
 % used to check whether the current environment is the one expected.
 %
 % Non-false conditionals (@iftex, @ifset) don't fit into this, so they
-% are not treated as enviroments; they don't open a group.  (The
+% are not treated as environments; they don't open a group.  (The
 % implementation of @end takes care not to call \endgroup in this
 % special case.)
 

src/plot/plplot/plmap.c

@@ -47,7 +47,7 @@
  *
  * plot continental outline in world coordinates
  *
- * v1.4: machine independant version
+ * v1.4: machine independent version
  * v1.3: replaced plcontinent by plmap, added plmeridians
  * v1.2: 2 arguments:  mapform, type of plot
  *

src/plot/plplot/plplot.h

@@ -387,7 +387,7 @@ typedef struct {
  * change the object names, but then everybody who wants to use the
  * package must throw these same switches, leading to no end of trouble.
  *
- * Note that this definition should not cause any noticable effects except
+ * Note that this definition should not cause any noticeable effects except
  * when debugging PLplot calls, in which case you will need to remember
  * the real function names (same as before but with a 'c_' prepended).
  *

src/plot/plplot/plplotP.h

@@ -627,12 +627,12 @@ plP_gprec(PLINT *p_setp, PLINT *p_prec);
 PLFLT
 plstrl(const char *string);
 
-/* Similar to strpos, but searches for occurence of string str2. */
+/* Similar to strpos, but searches for occurrence of string str2. */
 
 PLINT
 plP_stindex(const char *str1, const char *str2);
 
-/* Searches string str for first occurence of character chr.  */
+/* Searches string str for first occurrence of character chr.  */
 
 PLINT
 plP_strpos(char *str, int chr);

src/plot/plplot/plshade.c

@@ -347,8 +347,8 @@ plfshade(PLFLT (*f2eval) (PLINT, PLINT, PLPointer),
  * parameters:
  *
  * f2eval, f2eval_data:  data to plot
- * c2eval, c2eval_data:  defined mask (not implimented)
+ * c2eval, c2eval_data:  defined mask (not implemented)
- * defined: defined mask (old API - implimented)
+ * defined: defined mask (old API - implemented)
  * missing_min, missing_max: yet another way to set data to undefined
  * nx, ny: array dimensions
  * xmin, xmax, ymin, ymax: grid coordinates

src/plot/plplot/plsym.c

@@ -917,7 +917,7 @@ pldeco(short int **symbol, PLINT *length, const char *text)
 /*--------------------------------------------------------------------------*\
  * PLINT plP_strpos()
  *
- * Searches string str for first occurence of character chr.  If found
+ * Searches string str for first occurrence of character chr.  If found
  * the position of the character in the string is returned (the first
  * character has position 0).  If the character is not found a -1 is
  * returned.
@@ -937,7 +937,7 @@ plP_strpos(char *str, int chr)
 /*--------------------------------------------------------------------------*\
  * PLINT plP_stindex()
  *
- * Similar to strpos, but searches for occurence of string str2.
+ * Similar to strpos, but searches for occurrence of string str2.
 \*--------------------------------------------------------------------------*/
 
 PLINT

src/racket/gc/Makefile.dj

@@ -84,7 +84,7 @@ CFLAGS= -gstabs+ -O2 -I$(srcdir)/include -DATOMIC_UNCOLLECTABLE -DALL_INTERIOR_P
 # -DJAVA_FINALIZATION makes it somewhat safer to finalize objects out of
 #   order by specifying a nonstandard finalization mark procedure  (see
 #   finalize.c).  Objects reachable from finalizable objects will be marked
-#   in a sepearte postpass, and hence their memory won't be reclaimed.
+#   in a separate postpass, and hence their memory won't be reclaimed.
 #   Not recommended unless you are implementing a language that specifies
 #   these semantics.  Since 5.0, determines only only the initial value
 #   of GC_java_finalization variable.

src/racket/gc/doc/README.changes

@@ -1554,7 +1554,7 @@ Since 6.1alpha3:
  - Force 64 bit alignment with GCJ support.  (Reflects Bryce McKinley's
    patch to the gcc tree.)
  - Refined the choice of sa_handler vs. sa_sigaction in GC_dirty_init
-   to accomodate some glibc5 systems.  (Thanks to Dan Fandrich for the
+   to accommodate some glibc5 systems.  (Thanks to Dan Fandrich for the
    patch.)
  - Compensated for the fact that current versions of glibc set
    __libc_stack_end incorrectly on Linux/IA64 while initialization code

src/racket/gc/dyn_load.c

@@ -1194,7 +1194,7 @@ void GC_register_dynamic_libraries()
           PCR_IL_LoadedFile * p = PCR_IL_GetLastLoadedFile();
           PCR_IL_LoadedSegment * q;
           
-          /* Skip uncommited files */
+          /* Skip uncommitted files */
           while (p != NIL && !(p -> lf_commitPoint)) {
               /* The loading of this file has not yet been committed	*/
               /* Hence its description could be inconsistent.  		*/

src/racket/gc/win32_threads.c

@@ -1249,7 +1249,7 @@ int GC_pthread_join(pthread_t pthread_id, void **retval) {
 }
 
 /* Cygwin-pthreads calls CreateThread internally, but it's not
- * easily interceptible by us..
+ * easily interceptable by us..
  *   so intercept pthread_create instead
  */
 int

src/racket/include/scheme.h

@@ -389,7 +389,7 @@ typedef intptr_t (*Scheme_Secondary_Hash_Proc)(Scheme_Object *obj, void *cycle_d
 
 #define SCHEME_PATHP(obj)  SAME_TYPE(SCHEME_TYPE(obj), SCHEME_PLATFORM_PATH_KIND)
 #define SCHEME_GENERAL_PATHP(obj)  ((SCHEME_TYPE(obj) >= scheme_unix_path_type) && (SCHEME_TYPE(obj) <= scheme_windows_path_type))
-  /* A path is guranteed to have the same shape as a byte string */
+  /* A path is guaranteed to have the same shape as a byte string */
 
 #define SCHEME_PATH_STRINGP(x) (SCHEME_CHAR_STRINGP(x) || SCHEME_PATHP(x))
 #define SCHEME_PATH_STRING_STR "path or string"

src/racket/sgc/sgc.c

@@ -315,7 +315,7 @@
    malloc() to avoid waste when obtaining the proper alignment. */
 #define SECTOR_SEGMENT_GROUP_SIZE 32
 
-/* Number of bits used in 32-bit level table for checking existance of
+/* Number of bits used in 32-bit level table for checking existence of
    a sector. Creates a table of (1 << SECTOR_LOOKUP_SHIFT) pointers
    to individual page tables of size SECTOR_LOOKUP_PAGESIZE. */
 #define SECTOR_LOOKUP_PAGESETBITS 12

src/racket/src/dlcompat.inc

@@ -153,7 +153,7 @@ static const char * safegetenv(const char * s)
  * trying to locate a module. We first look at the values of LD_LIBRARY_PATH
  * and DYLD_LIBRARY_PATH, and then finally fall back to looking into
  * /usr/lib and /lib. Since both of the environments variables can contain a
- * list of colon seperated paths, we simply concat them and the two other paths
+ * list of colon separated paths, we simply concat them and the two other paths
  * into one big string, which we then can easily parse.
  * Splitting this string into the actual path list is done by getSearchPath()
  */

src/racket/src/jit.c

@@ -920,7 +920,7 @@ static void *top4;
    that multiple adjustments to the register can be collapsed; this
    mostly improves code size, rather than speed. Functions that cause
    the register to be de-sync'd are marked as such. Functions that can
-   accomodate a de-sync'd register on entry are marked as such. All
+   accommodate a de-sync'd register on entry are marked as such. All
    other fuctions can assume a sync'd regsiter and ensure a sync'd
    register. Note that branches and calls normally require a sync'd
    register. */
@@ -5289,7 +5289,7 @@ static int generate_arith(mz_jit_state *jitter, Scheme_Object *rator, Scheme_Obj
    If rand is NULL, then we're generating part of the fast path for an
    nary arithmatic over a binary operator; the first argument is
    already in R0 (fixnum or min/max) or a floating-point register
-   (flonum) and the second arguement is in R1 (fixnum or min/max) or a
+   (flonum) and the second argument is in R1 (fixnum or min/max) or a
    floating-point register (flonum).
    For unsafe_fx or unsafe_fl, -1 means safe but specific to the type.
 */

src/racket/src/portfun.c

@@ -1829,7 +1829,7 @@ static intptr_t pipe_write_bytes(Scheme_Output_Port *p,
 	  avail = pipe->bufstart - pipe->bufend - 1;
 	}
 	if (pipe->bufmax) {
-	  /* Again, it's possible that the port grew to accomodate
+	  /* Again, it's possible that the port grew to accommodate
 	     past peeks... */
 	  intptr_t extra;
 	  extra = pipe->buflen - (pipe->bufmax + pipe->bufmaxextra);

src/racket/src/regexp.c

@@ -2075,7 +2075,7 @@ regunicode(int negate)
   regparse += len + 1;
 
   ret = regnode(UNIPROP);
-  /* This encoding accomodates up to 63 categories: */
+  /* This encoding accommodates up to 63 categories: */
   regarg((negate << 13) | (bottom << 6) | top);
 
   return ret;

src/racket/src/thread.c

@@ -22,7 +22,7 @@
 /* This file implements Racket threads.
 
    Usually, Racket threads are implemented by copying the stack.
-   The scheme_thread_block() function is called occassionally by the
+   The scheme_thread_block() function is called occasionally by the
    evaluator so that the current thread can be swapped out.
    do_swap_thread() performs the actual swap. Threads can also be
    implemented by the OS; the bottom part of this file contains