[TCLCORE] Tcl/Tk 8.7a1 RELEASED

[Donald G P. <don...@ni...>]

Tcl/Tk 8.7a1 Release Announcement
September 8, 2017

The Tcl Core Team is pleased to announce the 8.7a1 releases of the Tcl
dynamic language and the Tk toolkit.  This is the first alpha release
of Tcl/Tk 8.7.  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.

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

Tcl/Tk 8.7a1 sources are freely available as open source from the
Tcl Developer Xchange web site at:

         http://www.tcl.tk/software/tcltk/8.7.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/

This distribution is source code only.  We keep links to some third
parties offering pre-built binaries for various systems here:

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

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 8.6:
--------------------------------------

These are alpha releases of 8.7.  The alpha designation means that
they are in a period of feature addition.  All relevant bug fixes (and
some more) up to and including changes in 8.6.7 are included in 8.7a1.
The following list focuses on new features added so far in 8.7. The
changes file at the root of the source tree contains a more complete
list.  The Timelines of all changes are online.

         https://core.tcl.tk/tcl/
         https://core.tcl.tk/tk/

This release is a development release, and should only be considered for
deployment use after considerable testing.

    * [TIP 458] New notifiers based on epoll() or kqueue()

    * [TIP 166] Extended color notation for alpha channel with [$image 
get|put]

    * [TIP 442] New options to display text in a progressbar

    * [TIP 463] New option: [regsub -command]

    * [TIP 449] [text] undo/redo return character range

    * [TIP 472] Support "0d" as optional prefix for decimal integers

    * [TIP 459] New introspection: [package files]

    * [TIP 470] Access to the context objects in oo definition commands
         => TclOO 1.2.0

    * [TIP 456] Extended C interface for opening server socket

    * Socket accept callbacks now always eval in the global namespace
         *** POTENTIAL INCOMPATIBILITY ***

    * Undocumented command [tk_getFileType] removed
         *** POTENTIAL INCOMPATIBILITY ***

    * [array names -regexp] now supports backrefs

    * Support for <Button-6> and <Button-7>

    * New Win shell builtins: assoc ftype move

    * Fix crash when command overwrite triggers delete trace that
      deletes enclosing namespace.

    * Fix memory leak in [text] widget operations.

    * [spinbox] now handles reversed -to / -from ordering.

    * Revised port selection for server sockets.

    * Repaired shadowing problem with compatibility fonts.

    * Repaired threaded allocator initialization.

    * http 2.8.12 fixes state 100 continue handling

    * library/msgs/*.msg files converted to true utf-8.

    * Itcl 3 "wrong num args" error messages no longer repaired.

--
Tcl Core Team and Maintainers
Don Porter, Tcl Core Release Manager
-- 
| Don Porter            Applied and Computational Mathematics Division |
| don...@ni...             Information Technology Laboratory |
| http://math.nist.gov/~DPorter/                                  NIST |
|______________________________________________________________________|