[TCLCORE] Tcl/Tk 8.5.19 RELEASED

Tcl/Tk 8.5.19 Release Announcement
February 12, 2016

The Tcl Core Team is pleased to announce the 8.5.19 releases of the Tcl
dynamic language and the Tk toolkit.  This is the nineteenth patch release
of Tcl/Tk 8.5.  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.

Tcl/Tk 8.5.* have been in release since December 2007.  The successor
releases Tcl/Tk 8.6.* have been in release since December 2012.
Tcl/Tk 8.5 is approaching its End of Life. We expect there to be few
additional 8.5.* patch releases, perhaps only one more.  If you have not
completed migrations from 8.5 to 8.6, that work should increase in
priority now. Any blocking issues should be made known to Tcl/Tk
developers in the ticket systems.

Where to get the new releases:
------------------------------

Tcl/Tk 8.5.19 sources are freely available as open source from the
Tcl Developer Xchange web site at:

         http://www.tcl.tk/software/tcltk/8.5.html

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:

         http://sourceforge.net/projects/tcl/files/

Binaries for most major platforms will be available from:

         http://www.activestate.com/activetcl/downloads

For additional information:
---------------------------

Please visit the Tcl Developer Xchange web site:

         http://www.tcl.tk/

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 8.5.18:
--------------------------------------

The following were the main changes in Tcl/Tk 8.5.19.  A complete list
can be found in the changes file at the root of the source tree.  The
more complete Timelines of all changes are online

         http://core.tcl.tk/tcl/
         http://core.tcl.tk/tk/

This is a patch release, so it primarily includes bug fixes and corrections
to erratic behavior.  Below are only the most notable changes.

    * [TIP 437] New panedwindow options.

    * [TIP 440] Implementation identifier: $::tcl_platform(engine).

    * Update to Unicode 8.0.
         *** POTENTIAL INCOMPATIBILITY ***

    * Better memory debug interoperation with extensions.

    * Cocoa: wish launches in front. [focus -force] works.

    * Revised handling of incomplete multibyte char @ EOF.
         *** POTENTIAL INCOMPATIBILITY ***

    * Fixed crashes...
       - allocation overflow parsing large [expr]essions.
       - overflow computing buffer sizes in input translation.
       - Cocoa: premature image free.
       - [$text index "1.0 display wordstart"]
       - [catch {canvas .c -bg #001 -potato}; canvas .d]
       - [$text see end] with elided text. (textIndex-25.1)
       - embedded window in [text], deletion bound to <Map> (textWind-18.1)
       - attempt to post a menubar menu (menu-37.1)
       - [text] tag redraw (textDisp-9.14)

    * Stop hangs in...
       - closing unflushed blocking channels.
       - OSX notifier.
       - notifier mutexes in forking processes.

    * New bundled packages
       - platform 1.0.14: Cygwin support fix.

    * Fix: Win: Permit shared read from linked dirs.

    * Fix: error in async input buffer draining via timer events.

    * Fix: Alpha channel handling in photo images.

    * Fix: "insert wordstart" result in word with multibyte chars.

    * Win: [file normalize ~user] get proper directory.

    * Extend serial channels to support higher baud rates.

    * Many improvements to regexp engine from Postgres.

    * Fix: support 64-bit window IDs.

    * Fix: [tk_getOpenFile] displays links to directories twice.

    * Fix: Many faults in [panedwindow] and [text].

    * Fix: Stop [$text delete] acting before start index.
         *** POTENTIAL INCOMPATIBILITY ***

    * Fix: Make TraverseToMenu safe to call on destroyed window.

    * Fix: Make [entry] insertion cursor always visible.

    * Fix: Display trailing TAB in entry.

    * Fix: double click on lone char in entry.

    * Fix: [listbox $path -takefocus 0] steals focus.

    * Fix: tag leaks in [text].

    * Fix: [text see] misbehavior.

    * Fix: Never-mapped [text] performance.

    * Fix: Report errors from -textvariable write trace in [entry].

    * Fix: initial scrollbar width.

    * Fix: event not received by scrollbar.

    * Update: MSVC 14+: semi-static UCRT support.

--
Tcl Core Team and Maintainers
Don Porter, Tcl Core Release Manager

-- 
| Don Porter            Applied and Computational Mathematics Division |
| dona...@nist.gov             Information Technology Laboratory |
| http://math.nist.gov/~DPorter/                                  NIST |
|______________________________________________________________________|

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