Released August 15, 2025.
Tcl Changes
- Win: exec now dispatches App Execution Aliases
- Win: auto_execok recognizes more shell commands
- encoding cp864: missing Euro/Tail-sign
- Fix crashes or hangs or undefined behavior in...
- Tcl_SplitList on string that exceeds max list size
- Win: Use-after-free memory corruption in multi-thread glob
- macOs: Pointer alignment in file attribute functions
- Correct failure in 'namespace children $ns $nonGlob'
- Number parsing failure: 'scan "1.[string repeat 1 191\]e-321" %g'
- Nested return -options, cmdMZ-return-2.{19,20,21}
- errorline into errorinfo from '$interp eval $script', interp-26.9
Tk Changes
- Win: support PNG images in icon files.
- Aqua: dark mode improvements.
- Aqua: interop with clipboard managers.
- Corrections to zh_cn message catalog for Tk console menu
- Fix crashes or hangs or undefined behavior in...
- Aqua: tk_getOpenFile
- div by zero in [$scale get $x $y\] when trough resized to invisibility
- block cursor size on a tab is too large.
- Win: incorrect system menu entries for transient toplevels
- Win: withdrawn transient windows can reappear in taskbar preview
- Win: misplaced underline in menu entry
- Aqua: cannot iconify all windows
- Aqua: wm-iconbitmap-{1.4,2.1}, uniwWm-22.3
Changes to Bundled Packages
Updated packages, libraries, standards, data
- Itcl 4.3.4
- sqlite3 3.50.4
- Thread 2.8.12
- DBC* 1.1.12
- tcltest 2.5.10
- dde 1.4.5
- tzdata 2025b