Twig Typography Extension

Twig adapter for PHP-Typography — smart quotes, dashes, ellipses, hyphenation, widow protection, fraction glyphs, ordinal suffixes, math symbols, CSS hooks for styling.

Requirements

• PHP 8.3+
• Twig 3 or 4
• Symfony YAML 6, 7, or 8 (always installed as a hard dependency; only invoked at runtime when the constructor receives a .yml file path)

Installation

composer require parisek/twig-typography

Usage

Register on a Twig environment

use Parisek\Twig\TypographyExtension;
use Twig\Environment;
use Twig\Loader\FilesystemLoader;

$twig = new Environment(new FilesystemLoader('/path/to/templates'));

// Library defaults — sane English settings.
$twig->addExtension(new TypographyExtension());

// — or — load settings from a YAML file:
$twig->addExtension(new TypographyExtension(__DIR__ . '/typography.yml'));

// — or — pass settings as a PHP array (no filesystem):
$twig->addExtension(new TypographyExtension([
    'set_smart_quotes' => true,
    'set_smart_dashes' => true,
]));

In templates

{{ title|typography }}

{{ "Lorem ipsum"|typography }}

{# Override constructor defaults for one call: #}
{{ title|typography({ set_smart_dashes: false }) }}

The filter is is_safe: html — its output may contain <sup>, <span class="…">, and similar markup, and is emitted unescaped.

Configuration

Every key in your YAML or array becomes a method call on PHP-Typography's Settings class. The library's full Settings(true) defaults are applied first; your values override them.

Example: Czech (cs-CZ) settings

# typography.yml — Czech smart typography
set_diacritic_language: "cs"

# Smart quotes — Czech style „double" and ‚single'
set_smart_quotes: TRUE
set_smart_quotes_primary: "doubleLow9"      # „ … "
set_smart_quotes_secondary: "singleLow9"    # ‚ … '

# Smart dashes — Czech/EU: en-dash with spaces (not US em-dash)
set_smart_dashes: TRUE
set_smart_dashes_style: "international"

# Smart spacing
set_single_character_word_spacing: TRUE     # k/s/v/z/o/u/i/a + nbsp — required in CZ
set_unit_spacing: TRUE                      # "5 kg" → "5 kg"
set_dewidow: FALSE                          # last-line widow protection — bad for responsive layouts

# Wrapping helpers
set_hyphenation: FALSE                      # leave to CSS `hyphens: auto` + `lang="cs"`
set_url_wrap: FALSE
set_email_wrap: FALSE

What's not included

This extension exposes PHP-Typography as one Twig filter, |typography. There's no {% typography %} block tag (despite earlier versions of this README claiming one — the tag was never implemented in code). To apply typography to a block of HTML, wrap it in an element and apply the filter to the rendered string, or define a Twig macro that encapsulates the pattern you want.

License

GPL-2.0-or-later, see LICENSE.txt.

Inspiration

• Twig Extension Symfony Bundle
• Twig Typography Drupal Module