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Tcl/Tk 8.4.19

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Tcl/Tk 8.4.19 Release Announcement
April 18, 2008

The Tcl Core Team is pleased to announce the 8.4.19 releases of the Tcl
dynamic language and the Tk toolkit.  This is the nineteenth patch release
of Tcl/Tk 8.4.  More details can be found below.  We would like to
express our gratitude to all those who submit bug reports and patches.
This information is invaluable in enabling us to identify and eliminate
problems in the core.

Routine maintenance of Tcl/Tk 8.4 has now come to an end.  We intend
Tcl/Tk 8.4.19 to be the final 8.4.* releases.  The current stable releases of
Tcl/Tk are 8.5.2, and development has begun on Tcl/Tk 8.6.  It is possible
that a bug fix of great enough importance or severity might prompt a
release of 8.4.20, but there is no plan for that at the moment.  Even
that level of support will fade away quickly.

Where to get the new releases:

Tcl/Tk 8.4.19 sources are freely available as open source from the
Tcl Developer Xchange web site at:

This web page also contains additional information about the releases,
including new features and notes about installing and compiling the
releases.  Sources are always available from the Tcl SourceForge
project's file distribution area:

Binaries for most major platforms are available from:

For additional information:

Please visit the Tcl Developer Xchange web site:

This site contains a variety of information about Tcl/Tk in general, the
core Tcl and Tk distributions, Tcl development tools, and much more.

Summary of Changes since Tcl/Tk 8.4.18:

The following were the main changes in Tcl/Tk 8.4.19.  A complete list
can be found in the changes file at the root of the source tree.  The
more complete ChangeLog is also included with each source release.  This
is a patch release, so it primarily included bug fixes and corrections
to erratic behavior.  Below are only the most notable changes.

   * New version 2.5.5 of http package with [http::meta] command

   * Eased file event constraints on channels being [fcopy]-ed.
     Bi-directional [fcopy] now possible.

   * Fixed callback failures of some [fcopy -size -command] uses.

   * Fixed crash for some [fcopy -size] arguments.

   * Fixed confusion in caching bytecode for scripts vs. expressions.

   * Fixed crash in [binary format x0s].

   * Fixed crash parsing Tk command line arguments.

   * Fixed memory leak in QD drawing (Aqua).

   * Better support for 64bit Solaris builds.

Tcl Core Team and Maintainers
Don Porter, Tcl Core Release Manager
| Don Porter          Mathematical and Computational Sciences Division |
| donald.porter@...             Information Technology Laboratory |
|                                  NIST |