Skip to content
tcl-lang.org·

🌟Tcl/Tk 9.1.0 Adds Unicode, Timer, and More in 2026

Tcl/Tk 9.1.0 Brings Unicode and Timer Support

TL;DR

Tcl/Tk 9.1.0, set for release in September 2026, introduces Unicode normalization, a high-resolution timer, and improved list handling. Key for developers working with large datasets and complex UIs.

Tcl/Tk 9.1.0, the next major release, is set to hit stable in September 2026, bringing a suite of new features and optimizations. The standout additions include Unicode normalization via the 'unicode' command and 'Tcl_UtfToNormalized*' routines, crucial for internationalization. A new 'timer' command offers microsecond resolution timing, perfect for performance-critical applications. For those dealing with large datasets, improved list handling and memory efficiency are game-changers. Developers working with complex UIs will appreciate bidirectional text support and new widgets like 'ttk::toggleswitch'.

Key Points

1

Tcl/Tk 9.1.0 introduces 'unicode' command for Unicode normalization, set for stable release in September 2026.

2

New 'timer' command offers microsecond resolution timing, a boon for performance-critical applications.

3

Improved list handling with 'lfilter' command and memory efficiency for large lists.

4

Accessibility screen reader support and bidirectional text support in Tk 9.1.

5

New 'ttk::toggleswitch' widget and 'tk attribtable' command for enhanced UI functionality.

Why It Matters

If you're working on internationalized applications or need precise timing, Tcl/Tk 9.1.0's Unicode normalization and high-resolution timer are must-haves. For UI developers, the 'ttk::toggleswitch' widget and improved list handling offer significant usability and performance benefits. The stable release in September 2026 is a key milestone for any project relying on Tcl/Tk.

tcltk9.1.0unicodetimerrelease

Comments

Subscribe to join the conversation...

Be the first to comment

Enjoyed this article?

Get it daily. 7am. Free. Reads in 5 minutes.

Join 3,537 builders reading daily.

Also get