Tcl/Tk 9.1.0

 Tcl/Tk 在 2026 年 9 月 29 日釋出了一個新的版本系列，也就是 9.1.x 系列，目前的版本為 9.1.0。

下面是網頁列出的 highlights。

Highlights of Tcl 9.1

• New command unicode: Unicode normalization
• New C routines Tcl_UtfToNormalized*: Unicode normalization
• New command timer: monotonic clock; microsecond resolution
• New command lfilter: select items from list
• New command interp set: variable access in child interpreter
• New subst options: -backslashes, -commands, -variables.
• New switch options: -integer.
• Many C99 math routines now available as expr functions.
• Applications now required to call an initialization routine, either Tcl_FindExecutable or TclZipfs_AppHook.
• New C routine Tcl_IsEmpty.
• New C routine Tcl_GetEncodingNameForUser.
• New C routine Tcl_AttemptCreateHashEntry.
• New C routines Tcl_ListObjRange, Tcl_ListObjRepeat, Tcl_ListObjReverse.
• New C time API using long long in place of Tcl_Time
• Case-insensitive filesystem paths on macOS.
• auto_execok and exec search reform on Windows.
• Revised searches for script library and encodings.
• Improved list internals for memory efficiency of large lists.
• Extended support for 64-bit sizes.

Highlights of Tk 9.1

• Accessibility screen reader support.
• Initial support for bidirectional text / RTL languages.
• New widget ttk::toggleswitch.
• New command tk attribtable.
• send command revised and improved on Aqua.
• Handling of negative screen distances.
• Extended states in ttk::treeview and ttk::notebook
• Improvements to Tk_CanvasTextInfo
• Rotated text on labels
• Limit message box and dialogs to physical screen width.
• Improved listbox selection colors.
• Removed obsolete support for Windows XP appearances.