Changes in Tcl/Tk 9.0.2

Tcl: release message (markdown file)

Tk: release message (markdown file)

July 2, 2025.

Tcl Changes

New commands and options

• New command encoding user
• New exec option -encoding

Bug fixes

• Better error-message than "interpreter uses an incompatible stubs mechanism"
• [$interp eval $lambda] after [eval $lambda] or vice versa fails
• tcl::mathfunc::isunordered inconsistency with some integer values
• test lseq hangs with -Os
• exec does not handle app execution aliases on Windows
• auto_execok does not find several built-in cmd commands
• Panic "Buffer Underflow, BUFFER_PADDING not enough"
• MS-VS build system: pckIndex.tcl when building for 9 misses "t" for TCL 8.6 part
• clock format -locale does not look up locale children if parent locale used first
• Missing libtcl?.?.dll.a in Cygwin
• tclEpollNotfy PlatformEventsControl panics if websocket disconnected
• Tcl_InitStubs compatibility for 9.1
• proc with more than 2**31 variables
• scan "long mantissa" %g
• "encoding system": wrong result without manifest
• lseq crash on out-of-range index
• lseq crash on nested indices
• Build broken (trunk branch) tclCompExpr.c tclOOCall.c
• Memory allocation runaway on truncated iso2022 encoding
• Missing include dir for extensions in non-default locations
• tcl::tm::path doesn't handle tilde expand
• lseq numeric overflow
• "return": broken ordering of nested -options
• Euro/Tail-sign missing from cp864 encoding
• use after free on TSD in Winsock
• use after free on Windows pipe handles
• tcl::build-info not documented
• Fix 32 bit overflow in interp limit

Incompatibilities

• The ActiveCodePage element has been removed from the Windows executable manifest for tclsh

Updated bundled packages, libraries, standards, data

• Itcl 4.3.3
• sqlite3 3.49.1
• Thread 3.0.2
• TDBC* 1.1.11
• tzdata 2025b

Known bugs

• changed behaviour wrt command names, namespaces and resolution
• windows dos device paths inconsistencies and missing functionality
• load library (dll) from zipfs-library causes a leak in temporary folder
• lsearch -sorted -inline -subindices incorrect result
• "No error" when load fails due to a missing secondary DLL

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Tk Changes

Improved widget appearance

• Visible grip element added in ttk::panedwindow sashes of most built-in themes

Bug fixes

• inaccurate scrollbar error-message
• Build tk 9.0.1 failed on macos 10.13
• image svg upstream out of bound read nanosvg#262
• wm iconbitmap does not correctly set the icon pixmap hint on macOS
• Backspace crashes 9.0 interpreter on FreeBSD
• Bug in the ttk::scale widget of the "default" theme
• Wrong appearance of the ttk::menubutton indicator of the "xpnative" theme
• English shortcuts for Chinese locale
• Tk_Get3DBorderColors broken by design
• MS-Win: Incorrect system menu entries for transient toplevels
• MS-Win: Withdrawn Tk transient windows can reappear in Windows taskbar preview
• Aqua windows don't always move focus correctly
• Cross compiling using x86_64-w64-mingw32-gcc
• BWidget Drag & Drop no longer works on Aqua
• tk print command fails with canvas widget
• tk print command fails on windows
• tk print fails for canvas items with non integer widths
• tk print canvas with smooth lines crashes on windows
• Collect utility procs for the Tk test suite
• Setting ttk state may change the a variable passed by value
• wm iconbitmap does not support icon files with png images on Windows
• block cursor size on a tab is too large
• macOS clipboard managers do not notice clipboard changes done by Tk

Incompatibilities

• The ActiveCodePage element has been removed from the Windows executable manifest for wish

Known bugs

• Inconsistent reporting of child geometry changes to grid container
• Inconsistency in whether widgets allow negative borderwidths
• slow widget creation if default font is not used
• The wm manage command does not work on current macOS versions
• Slow processing irregular transparencies
• text's cursor width on 0th column
• text widget breaks graphemes with combining diacritical marks

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Category Documentation | Changes in Tcl/Tk