Twig v1.0.3 Release Notes

New Features

Security Enhancement

Sandbox Mode: Added comprehensive sandbox security system for templates
- Implemented a SecurityPolicy interface to restrict allowed functions, filters, and tags
- Added DefaultSecurityPolicy with safe defaults for common operations
- Added sandboxed option to include tag for secure template inclusion
- Added engine-level sandbox control methods: EnableSandbox() and DisableSandbox()

Template Inheritance Enhancement

Parent Function: Implemented parent() function for accessing parent block content
- Allows child templates to extend rather than completely replace block content
- Preserves proper inheritance chain for multi-level inheritance
- Enhanced block context tracking for proper parent reference resolution

Whitespace Control

Dash Modifiers: Added support for whitespace control with dash modifiers (-)
- Added support for {{- ... }} and {{ ... -}} to trim whitespace before/after output
- Added support for {%- ... %} and {% ... -%} to trim whitespace before/after block tags
- Preserves template readability while controlling output formatting

Improvements

Code Organization: Enhanced internal APIs for better maintainability
Documentation: Updated README and wiki with new features
Code Quality: Improved error handling and memory management
Performance: Optimized context handling for sandboxed includes

Comprehensive Testing

Added tests for all new functionality:
- Sandbox security policy tests
- Sandbox context tests
- Parent function in template inheritance
- Whitespace control with dash modifiers

Wiki Documentation

Added wiki pages for new features:
- Sandbox mode and security policy
- Parent function and advanced template inheritance
- Whitespace control with examples

Twig v1.0.2 Release Notes

New Features

Added New Tags

Apply Tag: Implement {% apply filter %}...{% endapply %} tag that applies filters to blocks of content
Verbatim Tag: Added {% verbatim %}...{% endverbatim %} tag to output Twig syntax without processing it
Do Tag: Implement {% do %} tag for performing expressions without outputting results

Added New Filter

Spaceless Filter: Added spaceless filter that removes whitespace between HTML tags

Improvements

Path Resolution: Fixed template path resolution for relative paths in templates
- Properly resolves paths starting with "./" or "../" relative to the current template's directory
- Enables templates in subdirectories to properly include/extend templates using relative paths
Code Organization: Split parser functions into separate files for better maintainability
Documentation: Updated README with new tags and filter documentation
Code Quality: Cleaned up formatting and removed debug code

Comprehensive Testing

Added tests for all new functionality:
- Verbatim tag tests
- Apply tag tests
- Spaceless filter tests
- From tag tests
- Relative path resolution tests

Wiki Documentation

Added comprehensive wiki pages for better documentation organization