irule-convert

Modernize legacy Tcl iRule scripts by converting deprecated patterns.

59|6|Updated Mar 13, 2026
One-click install
npx skills add https://github.com/bitwisecook/tcl-lsp --skill irule-convert
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: irule-convert
Source: https://github.com/bitwisecook/tcl-lsp/tree/main/ai/claude/skills/irule-convert
Command: npx skills add https://github.com/bitwisecook/tcl-lsp --skill irule-convert

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires Bash, Read, Edit, and includes references (resource) and scripts (resource) components.

What problem does it solve?

This Skill addresses the challenge of maintaining and updating legacy Tcl iRules by automatically modernizing them to current best practices, improving performance and security.

Core Features & Use Cases

  • Legacy Pattern Detection: Identifies outdated or inefficient iRule constructs like unbraced expressions, deprecated matchclass, and ungated logging.
  • Automated Modernization: Applies conversions such as matchclass to class match, lappend for list concatenation, and correct string comparison operators.
  • Use Case: A network administrator needs to update a critical iRule that uses an old matchclass syntax. This Skill can automatically convert it to the modern class match syntax, ensuring compatibility and maintainability.

Quick Start

Use the irule-convert skill to modernize the iRule script located at /path/to/legacy_irule.tcl.

Frequently Asked Questions about irule-convert

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I convert legacy Tcl iRules to current best practices?

To convert legacy Tcl iRules, apply automated pattern detection to update unbraced expressions, deprecated matchclass syntax, and ungated logs to modern equivalents. This modernization process improves script performance and security hardening.

What is the best way to replace deprecated matchclass in an iRule script?

The best way to replace deprecated matchclass in an iRule script is through automated conversion to the modern class match syntax. This ensures compatibility and maintainability while updating legacy Tcl code to current standards.

Why should I use braced expressions in Tcl iRule scripts?

Braced expressions in Tcl iRule scripts prevent dynamic code execution and improve performance. Legacy scripts often omit braces, so detecting and converting these patterns modernizes the code and enhances overall security hardening.

Do I need Python to detect outdated Tcl iRule patterns?

Yes, you need Python scripts to detect and convert outdated Tcl iRule patterns. The modernization process relies on these scripts to identify unbraced expressions and deprecated matchclass syntax, applying specific IRULE and W-prefixed diagnostic codes.

Can I automate string concatenation for lists in legacy iRules?

Yes, you can automate string concatenation for lists in legacy iRules by converting manual concatenation to lappend. This modernization step aligns legacy Tcl scripts with current best practices for list handling.

What are common limitations when modernizing legacy iRules?

Limitations when modernizing legacy iRules include handling complex nested unbraced expressions and ensuring ungated logs are correctly gated without losing diagnostic visibility. Pattern detection relies on specific IRULE and W-prefixed diagnostic codes to mitigate these issues.