Tcl/Tk 9.1
Tcl/Tk 9.1.0 development release introduces Unicode normalization, new commands like timer and lfilter, Tk screen reader and RTL text support, and extended 64-bit size support.
summary is enough The release notes detail upcoming 9.1 features, but developers not working with Tcl will find little actionable depth here.
summary
Tcl/Tk 9.1.0 is currently in development toward a stable release, building upon the foundation of version 9.0. Key additions to Tcl include native Unicode normalization, a high-resolution monotonic timer command, list filtering, and memory efficiency improvements for large lists. Tk additions focus on modern desktop capabilities, bringing initial screen reader accessibility, bidirectional text support, and a new toggle switch widget. Commenters note Tcl's enduring architecture while discussing its modern utility and LLM-assisted code generation.
key points
- Tcl adds new built-in commands including unicode normalization, a monotonic timer with microsecond resolution, and lfilter.
- Tk introduces accessibility screen reader support and initial bidirectional text layout.
- Internal updates include better memory efficiency for large lists and extended 64-bit size support.
who should read it
Developers interested in desktop GUI toolkits, scripting languages, or legacy project updates.
discussion positive
consensus
Commenters express nostalgic appreciation for Tcl's unique dynamic string design, isolated interpreter architecture, and lack of a GIL, while highlighting its practical use in EDA tools and SQLite.
pushback
A few critics point out the limitations of Tcl's string-heavy syntax and express frustration with its integration in industrial VLSI CAD software.
I have a soft corner for TCL, because of its idiosyncracies and weird dynamic stringy playfulness. I would be wary of using it professionally but to play around for the fun of it ... it's just too much fun. Upvar and uplevels are crazy.
Python is that kind of cool one behaves when visiting parents of your would be spouse for the first time. Tcl on the other hand is like playing one's secret exclusive and somewhat dangerous games with kid school bestie.
Tcl/Tk pioneered the notion of a scripting language as a library. It got threading right. You can run multiple independent Tcl interpreters …
Highlights Tcl's pioneering design of isolated interpreters within a single process address space as a superior alternative to traditional GIL threading models.
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