[TCLCORE] Tcl / Tk 8.6.11 RELEASED

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Tcl/Tk 8.6.11 Release Announcement

December 31, 2020

The Tcl Core Team is pleased to announce the 8.6.11 releases of the Tcl

dynamic language and the Tk toolkit.  This is the eleventh patch release

of Tcl/Tk 8.6.  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 8.6.11 sources are freely available as open source from the

Tcl Developer Xchange web site at:

        http://www.tcl-lang.org/software/tcltk/8.6.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-lang.org/software/tcltk/bindist.html

For additional information:

---------------------------

Please visit the Tcl Developer Xchange web site:

        http://www.tcl-lang.org/

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 8.6.10:

--------------------------------------

This is a patch release, so it primarily includes bug fixes and corrections

to erratic behavior.  Highlighted changes are noted below.  The changes file

at the root of the source tree contains a more complete list.  The Timelines

of all changes are online.

http://core.tcl-lang.org/tcl/

http://core.tcl-lang.org/tk/

   * Tk improvements on Mac OSX (including Big Sur) / Aqua

      - Support that Big Sur calls itself Mac OSX version 11

      - Startup improvements in Tk applications

      - Keyboard: Rewrite of the Key event system, improved PressAndHold

      - Menubar: unresponsive, special menus, standard about dialog

      - Dark mode: white cursors, combobox focus ring, [winfo rgb]

      - Full screen: tiled window support, introspection and events

      - Mouse: revised default middle button bindings, drags across title bar

        *** POTENTIAL INCOMPATIBILITY ***

      - Appearance: complete floating windows, progressbar animation,

        colored text, compound buttons, boundaries, virtual events

      - Semantic colors: systemControlAccentColor, systemLinkColor

      - consistent finalization by different exit scenarios

      - Fix frame offset after [wm manage]

      - Fix -filetypes option for file dialogs

   * [TIP 581] disfavor Master/Slave terminology

   * Tk improvements on Windows

      - Workaround Win 10 bug related to mouse warping, bind-34.3

      - Stop [$treeview -show] growing width by 1 pixel

      - Broken appearance of long angled text line display

      - Ttk widget scaling on high resolution displays

      - Improvements in default theme selection

   * Revised handling of 4-byte UTF-8 sequences

        *** POTENTIAL INCOMPATIBILITY ***

   * Revised [binary (en|de)code base64] for RFC compliance and roundtrip

        *** POTENTIAL INCOMPATIBILITY ***

   * Tcl_DStringAppendElement # quoting precision, dstring-2.13, dstring-3.10

        *** POTENTIAL INCOMPATIBILITY ***

   * Extended [clock scan] ISO format and time zone support

        *** POTENTIAL INCOMPATIBILITY ***

   * Allow for select/copy from disabled text widget on all platforms

        *** POTENTIAL INCOMPATIBILITY ***

   * Revised case of [info loaded] module names

        *** POTENTIAL INCOMPATIBILITY ***

   * [info hostname] reports DNS name, not NetBIOS name

        *** POTENTIAL INCOMPATIBILITY ***

   * Force -eofchar \032 when evaluating library scripts

        *** POTENTIAL INCOMPATIBILITY ***

   * Revised error messages: "too few" => "not enough"

        *** POTENTIAL INCOMPATIBILITY ***

   * Support system encoding init to utf-8 on Windows

   * Fix crashes or hangs in...

      - [lsort [lrepeat 89478486 {}]]

      - program startup with NULL environment on Windows.

      - errors in parser initialization

      - Aqua window management interactions with Touchbar

      - Aqua full screen toggle

      - Aqua widget resizes during display callback

      - Aqua color caching scheme

      - Aqua button destruction during active animation

      - X11: font initialization when no fonts installed

      - X11: xft attempt to use Noto Color Emoji font

      - X11: attempt to display angled text w/o xft, canvText-20.2

   * Fix memory issues...

      - proper ref counts for failed [superclass], oo-1.18.[45]

      - index input validation for Tcl_Get(Range|UniChar)

      - checking for trailing / on an empty path

      - revise extensible structs to make more compiler checks happy

      - invalid mem read buffer in Tk_PhotoPut(Zoomed)Block

      - double free when entry validation sets text variable, entry-19.21

      - read from before buffer in Tk_FreeSavedOptions

   * Repair regressions in...

      - \U1E2165 and \U10E2165 parsing stops, utf-10.[67]

      - [string match \[a\u0000 a\x80] should return 0, util-5.52

      - [string trim $invalid-utf-8], string-20.[78]

      - support for com1: as Windows serial port

      - handling of notebook option -compound

      - Some bind scripts not eval'd in global scope

      - <Escape><Control-c> bind sequence, bind-33.(16-21)

   * Rewrite of zlib inflation for multi-stream and completeness

   * Run fileevents in proper thread after [thread::attach $channel]

   * Make combobox -postoffset option work with default style

   * Support MouseWheel bindings for ttk::scrollbar

   * Improve appearance of text selection in [*entry] widgets

   * Make Ttk widgets respect -cursor option

   * Make spinbox use proper names in query of option database

   * Prevent unspecified fontchooser options reverting to defaults

   * Internationalize font styles in fontchooser dialog

   * Prevent cycle in command resolution, namespace-57.0

   * Proper rejection of overlong sequences by Tcl_UtfPrev, utf-7.(24-46)

   * Fix auto_path initialization by Safe Base interps

   * Fix [expr 1e2147483648] to not return 0.0

   * Treeview scrolling, entry-2.1.1, treeview-9.2

   * Provide mouse binding for ttk::scrollbar grip

   * Display treeview focus ring when -selectmode none

   * Fix cascade tearoff menu redraw artifacts

   * Corrupt result from [$c postscript] with -file or -channel

   * Stop [unload] corruption of list of loaded packages

   * Preserve canvas tag list order during add/delete

   * Fix bad interaction between grab and mouse pointer warp, bind-36.1

   * Fix errno management in socket full close

   * Don't let focus events break entry validation, entry-10.1

   * Handle duplicates in spinbox -values list, spinbox-4.[0-2]

   * Fix [$canvas icursor] for non-default scroll region.

   * Fix focus on unmapped windows, focus-7.1

   * Win: env var encoding, env-2.5

   * Encoding tis-620 failed to load

   * Support for Unicode 13

   * tzdata updated to Olson's tzdata2020e

   * Updated bundled packages

      - Itcl 4.2.1

      - sqlite3 3.34.0

      - Thread 2.8.6

      - TDBC* 1.1.2

      - http 2.9.5, binary POST, -keepalive, -headers type safety

      - tcltest 2.5.3, -singleproc 1 exit codes

      - registry 1.3.5, C++ compat

      - dde 1.4.3, C++ compat

      - opt 0.4.8

      - platform 1.0.15

--

Tcl Core Team and Maintainers

Don Porter, Tcl Core Release Manager

[TCLCORE] Tcl / Tk 8.6.11 RELEASED

The Tool Command Language implementation

[TCLCORE] Tcl / Tk 8.6.11 RELEASED