Log message:
Update to Racket 5.3

Changes in Racket 5.3

* Submodules are nested module declarations that can be loaded and
  run independently from the enclosing module.  For an overview of
  submodules, see

    http://blog.racket-lang.org/2012/06/submodules.html

* The futures visualizer is a graphical profiling tool for parallel
  programs using futures.  The tool shows a detailed execution
  timeline depicting the migration of futures between threads, and
  gives detailed information about each runtime synchronization that
  occurred during program execution.  In addition, `would-be-future'
  is a special type of future that always executes sequentially and
  records all potential barricades a regular future would encounter.

* Optimization Coach (formerly Performance Report) reports
  information about Racket's inlining optimizations.  Optimization
  Coach can be launched in any language through the View menu.

* The new `images/flomap' library defines floating-point bitmaps and
  fast image processing operations on them.  It is written in Typed
  Racket, so Typed Racket code may use it without the cost of
  contract checks.

* The new `json' library supports parsing and generating JSON.
  (Originally based on Dave Herman's planet library.)

* `racket/string' is extended with a set of simplified string
  manipulation functions that are more convenient than using
  regexps.  `regexp-match*' and friends can now be used with new
  keyword arguments to return specific matched regexp group/s and
  gaps between matches.

* The new `racket/generic' library allows generic function
  definitions, which dispatch to methods added to a structure type
  via the new `#:methods' keyword.

* The `class' form supports declaring a method abstract.  An
  abstract method prevents a class from being instantiated unless it
  is overridden.

* The contract library comes with support for interfaces, generics,
  prompts, continuation-marks, and structs.

* Most error messages use a new multi-line format that is more
  consistent with contract errors and accommodates more information.

* Typed Racket supports function definitions with keyword arguments;
  the startup time of Typed Racket programs has been sharply
  reduced.

* The new `ffi/com' library replaces MysterX; a compatibility
  `mysterx' library remains, but without ActiveX support.  The new
  `ffi/unsafe/com' library offers a more primitive and direct way to
  use COM classes and methods.

* There is now a very complete completion code for zsh.  It is not
  included in the distribution though; get it at http://goo.gl/DU8JK
  (This script and the bash completions will be included in the
  standard installers in future versions.)

--- DEPRECATION ----------------------------------------------------

Effective this release:

  - The `tex2page' and `combinator-parser' libraries have been moved
    from the Racket distribution to PLaneT:

     (require (planet plt/tex2page))
     (require (planet plt/combinator-parser))

The following has been deprecated and will be removed in the
January 2013 release:

  - the `planet' command-line tool; use `raco planet' instead.

The following has been deprecated and will be removed in the
August 2013 release:

  - the `mzlib/class100' library; use `racket/class' instead.

Log message:
Recursive bump for pcre-8.30* (shlib major change)

Log message:
Revbump for
a) tiff update to 4.0 (shlib major change)
b) glib2 update 2.30.2 (adds libffi dependency to buildlink3.mk)

Enjoy.

Log message:
Update to Racket 5.2.1

Changes in Racket 5.2.1

* Performance improvements include the use of epoll()/kqueue()
  instead of select() for the Racket thread scheduler, cross-module
  inlining of small functions, and the use of SSE instead of x87 for
  JIT-compiled floating-point operations on platforms where SSE is
  always available (including x86_64 platforms).  A related change
  is the interning of literal numbers, strings, byte strings,
  characters, and regexps that appear in code and syntax objects.

* DrRacket uses a set of composable ray-traced icons available from
  the new `images' library collection.

* Typed Racket's `typecheck-fail' form allows macro creators to
  customize the error messages that Typed Racket produces.  This is
  especially useful when creating pattern matching macros.

* The performance of Redex's matcher has been substantially
  improved; depending on the model you should see improvements
  between 2x and 50x in the time it takes to reduce terms.

* Plots look nicer and are more correct at very small and very large
  scales.  New features include customizable dual axis ticks and
  transforms (e.g., log axes, date and currency ticks, axis interval
  collapse and stretch), stacked histograms, and 3D vector fields.
  The legacy `fit' function and libfit have been removed.

* The `2htdp/universe' library's `big-bang' form supports an
  experimental game pad key handler.

* The `db' library now supports nested transactions and PostgreSQL
  arrays.  Bugs involving MySQL authentication and memory corruption
  in the SQLite bindings have been fixed.

* The Macro Stepper tool in DrRacket no longer executes a program
  after expanding it.

* In the DMdA teaching languages, infinite recursive signatures
  ("streams", for example) with no intervening `mixed' are now
  supported, and the signatures of record definitions without fields
  now have generators for use with `property'.

* MysterX's ActiveX support is deprecated and will be removed in the
  next release.  MysterX's core COM functionality will become
  deprecated in the next release, but COM functionality will be
  supported for the foreseeable future as a compatibility layer over
  a forthcoming `ffi/com' library.

Log message:
Update to Racket 5.2

Release Highlights:

* DrRacket comes with an experimental, on-line check syntax tool,
  although this new tool is disabled default.  See below for more
  information.

* The new `db' library offers a high-level, functional interface to
  popular relational database systems, including PostgreSQL, MySQL,
  and SQLite, as well as other systems via ODBC.

* A new XREPL collection provides convenient commands for a plain
  racket REPL.  It is particularly convenient for people who prefer
  console-based work and alternative editors.  See also the new
  chapter on command-line tools and other editors at the end of the
  Racket Guide.

* The `plot' collection has been reimplemented in Racket.  It now
  offers PDF output, log axes, histograms, and more.  Some code that
  uses `plot' will still work, and some will need light porting.
  The `plot/compat' module offers expedient backward compatibility.

* DrRacket uses more conventional key bindings: `C-t' creates a new
  tab, `C-w' closes the current one, and `C-r' runs the definitions.
  On Mac OS X, the Command key is used.  See "Defining Custom
  Shortcuts" in the DrRacket manual for an example that uses the old
  key bindings.

* The new `raco link' command registers a directory as a collection,
  which allows the collection directory to reside outside the
  "collects" tree and without changing the PLTCOLLECTS environment
  variable.

* Typed Racket:
  - Typed Racket provides static performance debugging support to
    show which code gets optimized and point out code that does not.
    Use the "Performance Report" button in DrRacket.
  - More intuitive types in printouts in the REPL and in error
    messages.  Use `:query-result-type' to explore types, or
    `:print-type' for a full printout.
  - Typed Racket now supports defining function with optional
    arguments using the same syntax as Racket.

* Redex now supports specifying (and testing and automatically
  typesetting) judgment forms including type systems and SOS-style
  operational semantics.

* Fixed several GUI problems, including problems on Ubuntu 11.10
  (GTK+ 3) and 64-bit Mac OS X.

* Internal-definition expansion has changed to use `let*' semantics
  for sequences that contain no back references.  This change
  removes a performance penalty for using internal definitions
  instead of `let' in common cases, and it only changes the meaning
  of programs that capture continuations in internal definitions.
  Internal definitions are now considered preferable in style to
  `let'.

* Support for `begin-for-syntax' has been generalized; modules may
  now define and export both value bindings and syntax bindings
  (macros) at phase 1 and higher.

  Due to a bug, phase 1 syntax (or higher) is not available in
  DrRacket's `#lang'-based REPL.  A simple workaround is to disable
  debugging in DrRacket (see "no debugging" radio button in detailed
  language dialog).

Additional Items:

* The `racket/gui' library (and Slideshow) provides more support for
  multiple-screen displays.

* DrRacket remembers whether an opened file used LF or CRLF line
  endings, and will continue using the same.  When creating a new
  file, a preference determines how it is saved.

* `net/url' can now follow HTTP redirections.

* The LNCS and JFP class files are no longer distributed with
  Racket.  Instead, they are downloaded on demand.

* The Algol language implementation is now available as a plain
  language using `#lang algol60'.

* The Racket-to-C compiler (as accessed via `raco ctool' or `mzc')
  has been removed; Racket's JIT has long provided better
  performance, and the FFI provides better access to C libraries.

* Contracts can be applied to exports with the new `contract-out'
  form within `provide', instead of a separate `provide/contract'
  form.  (The new `contract-out' form is implemented as a new kind
  of "provide pre-transformer".)

* The `date*' structure type is an extension of `date' with
  `nanosecond' and `time-zone-name' fields.

* New looping constructs: `for/sum' and `for/product'.

* Direct calls to keyword-accepting functions are now optimized to
  eliminate the overhead of keywords.  In addition, the compiler
  detects and logs warnings for keyword-argument mismatches.

* The libfit interface is available from `plot/deprecated/fit', and
  will be removed in the near future.

* The Unix installer has been re-done, and it is now more robust.

* The built-in reader and printer support for Honu is removed.
  (This functionality is re-implemented in Racket.)

On-line Check Syntax:

DrRacket now provides an on-line version of the syntax check tool,
which means that syntax checking runs automatically while you
continue to edit a program.  With this tool enabled, its annotations
(e.g., binding arrows) and actions (e.g., the renaming refactoring
and direct documentation links) are almost always available.

We have noticed that on-line syntax checking renders DrRacket
unstable on occasion, perhaps because it relies on relatively new
support for parallelism.  Occurrences of the problem are rare, but
they are not rare enough, which is why we have disabled the tool by
default.  At the same time, current users of the tool find it so
valuable that we felt it should be included in the release.  We
expect to track down the remaining problems and enable the tool by
default in near-future release.

To enable on-line syntax checking (for `#lang'-based programs only),
click on the red dot in the bottom right of DrRacket's window.  To
turn it off, click there again.

Log message:
Recursive bump for graphics/freetype2 buildlink addition.

Log message:
Update Racket to version 5.1.3

Changes in Racket 5.1.3

This is a bugfix release, resolving the DrRacket issue with
the contour view.  In addition, two tex files with problematic
licensing were removed.

Changes in Racket 5.1.2

* The download page includes 64-bit installers for Mac OS X,
  Windows, and two Debian flavors.  Racket now supports OS X Lion.

* Racket now includes a new `racket/place' library to support
  parallelism, complementing `racket/future'.  Racket's parallel
  build process is now based on places instead of multiple OS
  processes.

  Places support share-nothing parallelism and message-passing
  communication.  Compared to futures, places are heavyweight, but
  they have a simpler performance model.

* The syntax-certificate system has been replaced by a syntax-taint
  system.  Both certificates and taints were designed to protect
  otherwise inaccessible bindings from abuse when they appear in
  macro expansions.  Taints are simpler and lighter, and the switch
  closes known holes in the certificate system.  Macros that are not
  implemented with `syntax-rules' or `define-syntax-rule', however,
  must explicitly use `syntax-protect' to protect their expansions
  from abuse.

* The `net/url' library supports HTTPS connections, but beware that
  by default all sites are accepted (equivalent to ignoring a
  browser's warnings about untrusted certificates).

* Error messages in the student languages use a simplified
  vocabulary and consistent phrasings.  If you maintain curriculum
  material or teachpacks then please consider updating.  See the
  "Error Message Composition Guidelines" section in the
  documentation for details.

* Typed Racket: almost all core Racket data structures and
  operations are now accessible in Typed Racket (most of this work
  is due to prolific contributor Eric Dobson).  The performance of
  the typechecker has been significantly improved.

* The `scriblib/bibtex' library supports BibTeX-formatted citation
  databases in Scribble documents.  BibTeX can be tricky to parse,
  so please report failed entries as bug reports.

* The `for' forms now support an `#:unless' clause, and a
  nonnegative integer can be used as a sequence.  The new `compose1'
  function creates single-valued composition functions.  The
  `racket/function' library now provides `identity', `thunk', and
  `thunk*'.

* The license has been clarified: we now use LGPLv2.1 uniformly.
  (The license file used to specify LGPLv2, contrary to the download
  pages.)

Log message:
Update to Racket 5.1.1

Changes in version 5.1.1, May 2011:

Enabled single-precision floats by default
Added single-flonum?
Changed eqv? so that inexacts are equivalent only when they
 have the same precision
Changed file-or-directory-permission to add 'bits mode
 and permission-setting mode
Added special treatment of void as an 'inferred-name property
Removed the "MrEd" compatability executable under Windows
 and Mac OS X, but the "mred" compatibility script remains
racket/gui: added multi-column support to list-box%
racket/gui: added scrollbar support to panel%, vertical-panel%,
 and horizontal-panel%
racket/gui: added 'wheel-left and 'wheel-right events
racket/file: add user-read-bit, etc.
racket/contract: removed some (undocumented) exports.

Changes in version 5.1, February 2011

Renamed "proxy" to "impersonator"
Added current-get-interaction-input-port, which enables
 racket/gui events to be dispatched while a REPL is blocked
Changed equal? to equate C pointers when they refer to the
 same address
Internal: weak boxes are cleared before non-will-like
 finalizers; use late-weak boxes to get the old behavior

Changes in version 5.0.2, October 2010

Changed body of `when', `unless', `cond' clauses, `case'
 clauses, and `match' clauses to be internal-definition contexts
Swapped unsafe-vector*-ref with unsafe-vector-ref, etc.
Added ->i to the contract library, improved ->*, adding #:pre and
 #:post, as well as making the optional arguments clause optional.
Added #true and #false, and changed #t/#T and #f/#F to
 require a delimiter afterward
Added print-boolean-long-form
Added read-accept-lang, which is set to #t when
 reading a module
Added flonum?
Changed continuation-marks to accept a #f argument
 to produce an empty set of marks
Added fxvectors
Added unsafe-{s,u}16-{ref,set!}
Added prop:proxy-of
Added proxies to go with chaperones, and renamed chaperone property
 as proxy property; beware that the word "proxy" will change in
 a future version, perhaps to "impersonator"
Added collection-file-path and collection splicing at the file
 level

Log message:
Fix DISTNAME, it shouldn't contain PKGREVISION affix.

Log message:
Replace "/usr/bin/env" interpreter, bump package revision.