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Tcl/Tk 8.5.12

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Tcl/Tk 8.5.12 Release Announcement
July 27, 2012

The Tcl Core Team is pleased to announce the 8.5.12 releases of the Tcl
dynamic language and the Tk toolkit. This is the twelfth 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.

Where to get the new releases:

Tcl/Tk 8.5.12 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 will be 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 8.5.11:

The following were the main changes in Tcl/Tk 8.5.12. 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 includes bug fixes and corrections
to erratic behavior. Below are only the most notable changes.

* [switch -regexp -indexvar] indices consistent with [regexp -indices].

* [dict exists] return 0, not error, on invalid dict.

* [source] now tolerates a leading BOM in the file.

* Update to Unicode 6.1 support.

* Improved correctness from commands like [file readable], etc. on
when querying Samba shares.

* Fixed failing menus on Windows when ID values grow too large.

* [exec ...

* [auto_execok] searches same as [exec] searches.

* Much fixing of [glob] in the Safe Base safe interps.

* Fixed crashes in [regexp], [dict for], [file system], string
event handling in stacked channels, [text] operations,
and dispatch.

* Corrected Ttk text element clipping.

* [canvas lower] now raises error properly.

* Disabled combobox no longer takes focus.

* Fixed [text] scrolling when -startline value changes.

* Avoid too wide -blockcursor in [text].

* Fix PNG in menus on X11 for Mac OSX builds.

* Improved interpretation of incomplete color specifications.

* Improved Python friendliness for dialogs and MouseWheel events.

* Fixed EIAS violation (inconsistent rounding) in Tk_GetPixelsFromObj().

* New package releases: dde 1.3.3, http 2.7.9, msgcat 1.4.5,
registry 1.2.2,
tcltest 2.3.4

* Improved handling of multiscreen desktops.

* Improved use of reentrant syscalls on BSD.

* Fix broken compiles on AIX, Android.

* Improved support for Cygwin environment.