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vendor/league/commonmark/src/Extension/Attributes/AttributesExtension.php

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+<?php
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ * (c) 2015 Martin Hasoň <martin.hason@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace League\CommonMark\Extension\Attributes;
+
+use League\CommonMark\Environment\EnvironmentBuilderInterface;
+use League\CommonMark\Event\DocumentParsedEvent;
+use League\CommonMark\Extension\Attributes\Event\AttributesListener;
+use League\CommonMark\Extension\Attributes\Parser\AttributesBlockStartParser;
+use League\CommonMark\Extension\Attributes\Parser\AttributesInlineParser;
+use League\CommonMark\Extension\ExtensionInterface;
+
+final class AttributesExtension implements ExtensionInterface
+{
+    public function register(EnvironmentBuilderInterface $environment): void
+    {
+        $environment->addBlockStartParser(new AttributesBlockStartParser());
+        $environment->addInlineParser(new AttributesInlineParser());
+        $environment->addEventListener(DocumentParsedEvent::class, [new AttributesListener(), 'processDocument']);
+    }
+}

vendor/league/commonmark/src/Extension/Attributes/Event/AttributesListener.php

@@ -0,0 +1,139 @@
+<?php
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ * (c) 2015 Martin Hasoň <martin.hason@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace League\CommonMark\Extension\Attributes\Event;
+
+use League\CommonMark\Event\DocumentParsedEvent;
+use League\CommonMark\Extension\Attributes\Node\Attributes;
+use League\CommonMark\Extension\Attributes\Node\AttributesInline;
+use League\CommonMark\Extension\Attributes\Util\AttributesHelper;
+use League\CommonMark\Extension\CommonMark\Node\Block\FencedCode;
+use League\CommonMark\Extension\CommonMark\Node\Block\ListBlock;
+use League\CommonMark\Extension\CommonMark\Node\Block\ListItem;
+use League\CommonMark\Node\Inline\AbstractInline;
+use League\CommonMark\Node\Node;
+
+final class AttributesListener
+{
+    private const DIRECTION_PREFIX = 'prefix';
+    private const DIRECTION_SUFFIX = 'suffix';
+
+    public function processDocument(DocumentParsedEvent $event): void
+    {
+        foreach ($event->getDocument()->iterator() as $node) {
+            if (! ($node instanceof Attributes || $node instanceof AttributesInline)) {
+                continue;
+            }
+
+            [$target, $direction] = self::findTargetAndDirection($node);
+
+            if ($target instanceof Node) {
+                $parent = $target->parent();
+                if ($parent instanceof ListItem && $parent->parent() instanceof ListBlock && $parent->parent()->isTight()) {
+                    $target = $parent;
+                }
+
+                if ($direction === self::DIRECTION_SUFFIX) {
+                    $attributes = AttributesHelper::mergeAttributes($target, $node->getAttributes());
+                } else {
+                    $attributes = AttributesHelper::mergeAttributes($node->getAttributes(), $target);
+                }
+
+                $target->data->set('attributes', $attributes);
+            }
+
+            $node->detach();
+        }
+    }
+
+    /**
+     * @param Attributes|AttributesInline $node
+     *
+     * @return array<Node|string|null>
+     */
+    private static function findTargetAndDirection($node): array
+    {
+        $target    = null;
+        $direction = null;
+        $previous  = $next = $node;
+        while (true) {
+            $previous = self::getPrevious($previous);
+            $next     = self::getNext($next);
+
+            if ($previous === null && $next === null) {
+                if (! $node->parent() instanceof FencedCode) {
+                    $target    = $node->parent();
+                    $direction = self::DIRECTION_SUFFIX;
+                }
+
+                break;
+            }
+
+            if ($node instanceof AttributesInline && ($previous === null || ($previous instanceof AbstractInline && $node->isBlock()))) {
+                continue;
+            }
+
+            if ($previous !== null && ! self::isAttributesNode($previous)) {
+                $target    = $previous;
+                $direction = self::DIRECTION_SUFFIX;
+
+                break;
+            }
+
+            if ($next !== null && ! self::isAttributesNode($next)) {
+                $target    = $next;
+                $direction = self::DIRECTION_PREFIX;
+
+                break;
+            }
+        }
+
+        return [$target, $direction];
+    }
+
+    /**
+     * Get any previous block (sibling or parent) this might apply to
+     */
+    private static function getPrevious(?Node $node = null): ?Node
+    {
+        if ($node instanceof Attributes) {
+            if ($node->getTarget() === Attributes::TARGET_NEXT) {
+                return null;
+            }
+
+            if ($node->getTarget() === Attributes::TARGET_PARENT) {
+                return $node->parent();
+            }
+        }
+
+        return $node instanceof Node ? $node->previous() : null;
+    }
+
+    /**
+     * Get any previous block (sibling or parent) this might apply to
+     */
+    private static function getNext(?Node $node = null): ?Node
+    {
+        if ($node instanceof Attributes && $node->getTarget() !== Attributes::TARGET_NEXT) {
+            return null;
+        }
+
+        return $node instanceof Node ? $node->next() : null;
+    }
+
+    private static function isAttributesNode(Node $node): bool
+    {
+        return $node instanceof Attributes || $node instanceof AttributesInline;
+    }
+}

vendor/league/commonmark/src/Extension/Attributes/Node/Attributes.php

@@ -0,0 +1,65 @@
+<?php
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ * (c) 2015 Martin Hasoň <martin.hason@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace League\CommonMark\Extension\Attributes\Node;
+
+use League\CommonMark\Node\Block\AbstractBlock;
+
+final class Attributes extends AbstractBlock
+{
+    public const TARGET_PARENT   = 0;
+    public const TARGET_PREVIOUS = 1;
+    public const TARGET_NEXT     = 2;
+
+    /** @var array<string, mixed> */
+    private array $attributes;
+
+    private int $target = self::TARGET_NEXT;
+
+    /**
+     * @param array<string, mixed> $attributes
+     */
+    public function __construct(array $attributes)
+    {
+        parent::__construct();
+
+        $this->attributes = $attributes;
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function getAttributes(): array
+    {
+        return $this->attributes;
+    }
+
+    /**
+     * @param array<string, mixed> $attributes
+     */
+    public function setAttributes(array $attributes): void
+    {
+        $this->attributes = $attributes;
+    }
+
+    public function getTarget(): int
+    {
+        return $this->target;
+    }
+
+    public function setTarget(int $target): void
+    {
+        $this->target = $target;
+    }
+}

vendor/league/commonmark/src/Extension/Attributes/Node/AttributesInline.php

@@ -0,0 +1,57 @@
+<?php
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ * (c) 2015 Martin Hasoň <martin.hason@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace League\CommonMark\Extension\Attributes\Node;
+
+use League\CommonMark\Node\Inline\AbstractInline;
+
+final class AttributesInline extends AbstractInline
+{
+    /** @var array<string, mixed> */
+    private array $attributes;
+
+    private bool $block;
+
+    /**
+     * @param array<string, mixed> $attributes
+     */
+    public function __construct(array $attributes, bool $block)
+    {
+        parent::__construct();
+
+        $this->attributes = $attributes;
+        $this->block      = $block;
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function getAttributes(): array
+    {
+        return $this->attributes;
+    }
+
+    /**
+     * @param array<string, mixed> $attributes
+     */
+    public function setAttributes(array $attributes): void
+    {
+        $this->attributes = $attributes;
+    }
+
+    public function isBlock(): bool
+    {
+        return $this->block;
+    }
+}

vendor/league/commonmark/src/Extension/Attributes/Parser/AttributesBlockContinueParser.php

@@ -0,0 +1,92 @@
+<?php
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ * (c) 2015 Martin Hasoň <martin.hason@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace League\CommonMark\Extension\Attributes\Parser;
+
+use League\CommonMark\Extension\Attributes\Node\Attributes;
+use League\CommonMark\Extension\Attributes\Util\AttributesHelper;
+use League\CommonMark\Node\Block\AbstractBlock;
+use League\CommonMark\Parser\Block\AbstractBlockContinueParser;
+use League\CommonMark\Parser\Block\BlockContinue;
+use League\CommonMark\Parser\Block\BlockContinueParserInterface;
+use League\CommonMark\Parser\Cursor;
+
+final class AttributesBlockContinueParser extends AbstractBlockContinueParser
+{
+    private Attributes $block;
+
+    private AbstractBlock $container;
+
+    private bool $hasSubsequentLine = false;
+
+    /**
+     * @param array<string, mixed> $attributes The attributes identified by the block start parser
+     * @param AbstractBlock        $container  The node we were in when these attributes were discovered
+     */
+    public function __construct(array $attributes, AbstractBlock $container)
+    {
+        $this->block = new Attributes($attributes);
+
+        $this->container = $container;
+    }
+
+    public function getBlock(): AbstractBlock
+    {
+        return $this->block;
+    }
+
+    public function tryContinue(Cursor $cursor, BlockContinueParserInterface $activeBlockParser): ?BlockContinue
+    {
+        $this->hasSubsequentLine = true;
+
+        $cursor->advanceToNextNonSpaceOrTab();
+
+        // Does this next line also have attributes?
+        $attributes = AttributesHelper::parseAttributes($cursor);
+        $cursor->advanceToNextNonSpaceOrTab();
+        if ($cursor->isAtEnd() && $attributes !== []) {
+            // It does! Merge them into what we parsed previously
+            $this->block->setAttributes(AttributesHelper::mergeAttributes(
+                $this->block->getAttributes(),
+                $attributes
+            ));
+
+            // Tell the core parser we've consumed everything
+            return BlockContinue::at($cursor);
+        }
+
+        // Okay, so there are no attributes on the next line
+        // If this next line is blank we know we can't target the next node, it must be a previous one
+        if ($cursor->isBlank()) {
+            $this->block->setTarget(Attributes::TARGET_PREVIOUS);
+        }
+
+        return BlockContinue::none();
+    }
+
+    public function closeBlock(): void
+    {
+        // Attributes appearing at the very end of the document won't have any last lines to check
+        // so we can make that determination here
+        if (! $this->hasSubsequentLine) {
+            $this->block->setTarget(Attributes::TARGET_PREVIOUS);
+        }
+
+        // We know this block must apply to the "previous" block, but that could be a sibling or parent,
+        // so we check the containing block to see which one it might be.
+        if ($this->block->getTarget() === Attributes::TARGET_PREVIOUS && $this->block->parent() === $this->container) {
+            $this->block->setTarget(Attributes::TARGET_PARENT);
+        }
+    }
+}

vendor/league/commonmark/src/Extension/Attributes/Parser/AttributesBlockStartParser.php

@@ -0,0 +1,40 @@
+<?php
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ * (c) 2015 Martin Hasoň <martin.hason@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace League\CommonMark\Extension\Attributes\Parser;
+
+use League\CommonMark\Extension\Attributes\Util\AttributesHelper;
+use League\CommonMark\Parser\Block\BlockStart;
+use League\CommonMark\Parser\Block\BlockStartParserInterface;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Parser\MarkdownParserStateInterface;
+
+final class AttributesBlockStartParser implements BlockStartParserInterface
+{
+    public function tryStart(Cursor $cursor, MarkdownParserStateInterface $parserState): ?BlockStart
+    {
+        $originalPosition = $cursor->getPosition();
+        $attributes       = AttributesHelper::parseAttributes($cursor);
+
+        if ($attributes === [] && $originalPosition === $cursor->getPosition()) {
+            return BlockStart::none();
+        }
+
+        if ($cursor->getNextNonSpaceCharacter() !== null) {
+            return BlockStart::none();
+        }
+
+        return BlockStart::of(new AttributesBlockContinueParser($attributes, $parserState->getActiveBlockParser()->getBlock()))->at($cursor);
+    }
+}

vendor/league/commonmark/src/Extension/Attributes/Parser/AttributesInlineParser.php

@@ -0,0 +1,54 @@
+<?php
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ * (c) 2015 Martin Hasoň <martin.hason@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace League\CommonMark\Extension\Attributes\Parser;
+
+use League\CommonMark\Extension\Attributes\Node\AttributesInline;
+use League\CommonMark\Extension\Attributes\Util\AttributesHelper;
+use League\CommonMark\Node\StringContainerInterface;
+use League\CommonMark\Parser\Inline\InlineParserInterface;
+use League\CommonMark\Parser\Inline\InlineParserMatch;
+use League\CommonMark\Parser\InlineParserContext;
+
+final class AttributesInlineParser implements InlineParserInterface
+{
+    public function getMatchDefinition(): InlineParserMatch
+    {
+        return InlineParserMatch::string('{');
+    }
+
+    public function parse(InlineParserContext $inlineContext): bool
+    {
+        $cursor = $inlineContext->getCursor();
+        $char   = (string) $cursor->peek(-1);
+
+        $attributes = AttributesHelper::parseAttributes($cursor);
+        if ($attributes === []) {
+            return false;
+        }
+
+        if ($char === ' ' && ($prev = $inlineContext->getContainer()->lastChild()) instanceof StringContainerInterface) {
+            $prev->setLiteral(\rtrim($prev->getLiteral(), ' '));
+        }
+
+        if ($char === '') {
+            $cursor->advanceToNextNonSpaceOrNewline();
+        }
+
+        $node = new AttributesInline($attributes, $char === ' ' || $char === '');
+        $inlineContext->getContainer()->appendChild($node);
+
+        return true;
+    }
+}

vendor/league/commonmark/src/Extension/Attributes/Util/AttributesHelper.php

@@ -0,0 +1,136 @@
+<?php
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ * (c) 2015 Martin Hasoň <martin.hason@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace League\CommonMark\Extension\Attributes\Util;
+
+use League\CommonMark\Node\Node;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Util\RegexHelper;
+
+/**
+ * @internal
+ */
+final class AttributesHelper
+{
+    private const SINGLE_ATTRIBUTE = '\s*([.#][_a-z0-9-]+|' . RegexHelper::PARTIAL_ATTRIBUTENAME . RegexHelper::PARTIAL_ATTRIBUTEVALUESPEC . ')\s*';
+    private const ATTRIBUTE_LIST   = '/^{:?(' . self::SINGLE_ATTRIBUTE . ')+}/i';
+
+    /**
+     * @return array<string, mixed>
+     */
+    public static function parseAttributes(Cursor $cursor): array
+    {
+        $state = $cursor->saveState();
+        $cursor->advanceToNextNonSpaceOrNewline();
+
+        // Quick check to see if we might have attributes
+        if ($cursor->getCharacter() !== '{') {
+            $cursor->restoreState($state);
+
+            return [];
+        }
+
+        // Attempt to match the entire attribute list expression
+        // While this is less performant than checking for '{' now and '}' later, it simplifies
+        // matching individual attributes since they won't need to look ahead for the closing '}'
+        // while dealing with the fact that attributes can technically contain curly braces.
+        // So we'll just match the start and end braces up front.
+        $attributeExpression = $cursor->match(self::ATTRIBUTE_LIST);
+        if ($attributeExpression === null) {
+            $cursor->restoreState($state);
+
+            return [];
+        }
+
+        // Trim the leading '{' or '{:' and the trailing '}'
+        $attributeExpression = \ltrim(\substr($attributeExpression, 1, -1), ':');
+        $attributeCursor     = new Cursor($attributeExpression);
+
+        /** @var array<string, mixed> $attributes */
+        $attributes = [];
+        while ($attribute = \trim((string) $attributeCursor->match('/^' . self::SINGLE_ATTRIBUTE . '/i'))) {
+            if ($attribute[0] === '#') {
+                $attributes['id'] = \substr($attribute, 1);
+
+                continue;
+            }
+
+            if ($attribute[0] === '.') {
+                $attributes['class'][] = \substr($attribute, 1);
+
+                continue;
+            }
+
+            [$name, $value] = \explode('=', $attribute, 2);
+
+            $first = $value[0];
+            $last  = \substr($value, -1);
+            if (($first === '"' && $last === '"') || ($first === "'" && $last === "'") && \strlen($value) > 1) {
+                $value = \substr($value, 1, -1);
+            }
+
+            if (\strtolower(\trim($name)) === 'class') {
+                foreach (\array_filter(\explode(' ', \trim($value))) as $class) {
+                    $attributes['class'][] = $class;
+                }
+            } else {
+                $attributes[\trim($name)] = \trim($value);
+            }
+        }
+
+        if (isset($attributes['class'])) {
+            $attributes['class'] = \implode(' ', (array) $attributes['class']);
+        }
+
+        return $attributes;
+    }
+
+    /**
+     * @param Node|array<string, mixed> $attributes1
+     * @param Node|array<string, mixed> $attributes2
+     *
+     * @return array<string, mixed>
+     */
+    public static function mergeAttributes($attributes1, $attributes2): array
+    {
+        $attributes = [];
+        foreach ([$attributes1, $attributes2] as $arg) {
+            if ($arg instanceof Node) {
+                $arg = $arg->data->get('attributes');
+            }
+
+            /** @var array<string, mixed> $arg */
+            $arg = (array) $arg;
+            if (isset($arg['class'])) {
+                if (\is_string($arg['class'])) {
+                    $arg['class'] = \array_filter(\explode(' ', \trim($arg['class'])));
+                }
+
+                foreach ($arg['class'] as $class) {
+                    $attributes['class'][] = $class;
+                }
+
+                unset($arg['class']);
+            }
+
+            $attributes = \array_merge($attributes, $arg);
+        }
+
+        if (isset($attributes['class'])) {
+            $attributes['class'] = \implode(' ', $attributes['class']);
+        }
+
+        return $attributes;
+    }
+}

vendor/league/commonmark/src/Extension/Autolink/AutolinkExtension.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Autolink;
+
+use League\CommonMark\Environment\EnvironmentBuilderInterface;
+use League\CommonMark\Extension\ExtensionInterface;
+
+final class AutolinkExtension implements ExtensionInterface
+{
+    public function register(EnvironmentBuilderInterface $environment): void
+    {
+        $environment->addInlineParser(new EmailAutolinkParser());
+        $environment->addInlineParser(new UrlAutolinkParser());
+    }
+}

vendor/league/commonmark/src/Extension/Autolink/EmailAutolinkParser.php

@@ -0,0 +1,48 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Autolink;
+
+use League\CommonMark\Extension\CommonMark\Node\Inline\Link;
+use League\CommonMark\Parser\Inline\InlineParserInterface;
+use League\CommonMark\Parser\Inline\InlineParserMatch;
+use League\CommonMark\Parser\InlineParserContext;
+
+final class EmailAutolinkParser implements InlineParserInterface
+{
+    private const REGEX = '[A-Za-z0-9.\-_+]+@[A-Za-z0-9\-_]+\.[A-Za-z0-9\-_.]+';
+
+    public function getMatchDefinition(): InlineParserMatch
+    {
+        return InlineParserMatch::regex(self::REGEX);
+    }
+
+    public function parse(InlineParserContext $inlineContext): bool
+    {
+        $email = $inlineContext->getFullMatch();
+        // The last character cannot be - or _
+        if (\in_array(\substr($email, -1), ['-', '_'], true)) {
+            return false;
+        }
+
+        // Does the URL end with punctuation that should be stripped?
+        if (\substr($email, -1) === '.') {
+            $email = \substr($email, 0, -1);
+        }
+
+        $inlineContext->getCursor()->advanceBy(\strlen($email));
+        $inlineContext->getContainer()->appendChild(new Link('mailto:' . $email, $email));
+
+        return true;
+    }
+}

vendor/league/commonmark/src/Extension/Autolink/UrlAutolinkParser.php

@@ -0,0 +1,140 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Autolink;
+
+use League\CommonMark\Extension\CommonMark\Node\Inline\Link;
+use League\CommonMark\Parser\Inline\InlineParserInterface;
+use League\CommonMark\Parser\Inline\InlineParserMatch;
+use League\CommonMark\Parser\InlineParserContext;
+
+final class UrlAutolinkParser implements InlineParserInterface
+{
+    private const ALLOWED_AFTER = [null, ' ', "\t", "\n", "\x0b", "\x0c", "\x0d", '*', '_', '~', '('];
+
+    // RegEx adapted from https://github.com/symfony/symfony/blob/4.2/src/Symfony/Component/Validator/Constraints/UrlValidator.php
+    private const REGEX = '~
+        (
+            # Must start with a supported scheme + auth, or "www"
+            (?:
+                (?:%s)://                                 # protocol
+                (?:([\.\pL\pN-]+:)?([\.\pL\pN-]+)@)?      # basic auth
+            |www\.)
+            (?:
+                (?:[\pL\pN\pS\-\.])+(?:\.?(?:[\pL\pN]|xn\-\-[\pL\pN-]+)+\.?) # a domain name
+                    |                                                 # or
+                \d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}                    # an IP address
+                    |                                                 # or
+                \[
+                    (?:(?:(?:(?:(?:(?:(?:[0-9a-f]{1,4})):){6})(?:(?:(?:(?:(?:[0-9a-f]{1,4})):(?:(?:[0-9a-f]{1,4})))|(?:(?:(?:(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9]))\.){3}(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9])))))))|(?:(?:::(?:(?:(?:[0-9a-f]{1,4})):){5})(?:(?:(?:(?:(?:[0-9a-f]{1,4})):(?:(?:[0-9a-f]{1,4})))|(?:(?:(?:(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9]))\.){3}(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9])))))))|(?:(?:(?:(?:(?:[0-9a-f]{1,4})))?::(?:(?:(?:[0-9a-f]{1,4})):){4})(?:(?:(?:(?:(?:[0-9a-f]{1,4})):(?:(?:[0-9a-f]{1,4})))|(?:(?:(?:(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9]))\.){3}(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9])))))))|(?:(?:(?:(?:(?:(?:[0-9a-f]{1,4})):){0,1}(?:(?:[0-9a-f]{1,4})))?::(?:(?:(?:[0-9a-f]{1,4})):){3})(?:(?:(?:(?:(?:[0-9a-f]{1,4})):(?:(?:[0-9a-f]{1,4})))|(?:(?:(?:(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9]))\.){3}(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9])))))))|(?:(?:(?:(?:(?:(?:[0-9a-f]{1,4})):){0,2}(?:(?:[0-9a-f]{1,4})))?::(?:(?:(?:[0-9a-f]{1,4})):){2})(?:(?:(?:(?:(?:[0-9a-f]{1,4})):(?:(?:[0-9a-f]{1,4})))|(?:(?:(?:(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9]))\.){3}(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9])))))))|(?:(?:(?:(?:(?:(?:[0-9a-f]{1,4})):){0,3}(?:(?:[0-9a-f]{1,4})))?::(?:(?:[0-9a-f]{1,4})):)(?:(?:(?:(?:(?:[0-9a-f]{1,4})):(?:(?:[0-9a-f]{1,4})))|(?:(?:(?:(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9]))\.){3}(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9])))))))|(?:(?:(?:(?:(?:(?:[0-9a-f]{1,4})):){0,4}(?:(?:[0-9a-f]{1,4})))?::)(?:(?:(?:(?:(?:[0-9a-f]{1,4})):(?:(?:[0-9a-f]{1,4})))|(?:(?:(?:(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9]))\.){3}(?:(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9])))))))|(?:(?:(?:(?:(?:(?:[0-9a-f]{1,4})):){0,5}(?:(?:[0-9a-f]{1,4})))?::)(?:(?:[0-9a-f]{1,4})))|(?:(?:(?:(?:(?:(?:[0-9a-f]{1,4})):){0,6}(?:(?:[0-9a-f]{1,4})))?::))))
+                \]  # an IPv6 address
+            )
+            (?::[0-9]+)?                              # a port (optional)
+            (?:/ (?:[\pL\pN\-._\~!$&\'()*+,;=:@]|%%[0-9A-Fa-f]{2})* )*      # a path
+            (?:\? (?:[\pL\pN\-._\~!$&\'()*+,;=:@/?]|%%[0-9A-Fa-f]{2})* )?   # a query (optional)
+            (?:\# (?:[\pL\pN\-._\~!$&\'()*+,;=:@/?]|%%[0-9A-Fa-f]{2})* )?   # a fragment (optional)
+        )~ixu';
+
+    /**
+     * @var string[]
+     *
+     * @psalm-readonly
+     */
+    private array $prefixes = ['www'];
+
+    /** @psalm-readonly */
+    private string $finalRegex;
+
+    /**
+     * @param array<int, string> $allowedProtocols
+     */
+    public function __construct(array $allowedProtocols = ['http', 'https', 'ftp'])
+    {
+        $this->finalRegex = \sprintf(self::REGEX, \implode('|', $allowedProtocols));
+
+        foreach ($allowedProtocols as $protocol) {
+            $this->prefixes[] = $protocol . '://';
+        }
+    }
+
+    public function getMatchDefinition(): InlineParserMatch
+    {
+        return InlineParserMatch::oneOf(...$this->prefixes);
+    }
+
+    public function parse(InlineParserContext $inlineContext): bool
+    {
+        $cursor = $inlineContext->getCursor();
+
+        // Autolinks can only come at the beginning of a line, after whitespace, or certain delimiting characters
+        $previousChar = $cursor->peek(-1);
+        if (! \in_array($previousChar, self::ALLOWED_AFTER, true)) {
+            return false;
+        }
+
+        // Check if we have a valid URL
+        if (! \preg_match($this->finalRegex, $cursor->getRemainder(), $matches)) {
+            return false;
+        }
+
+        $url = $matches[0];
+
+        // Does the URL end with punctuation that should be stripped?
+        if (\preg_match('/(.+?)([?!.,:*_~]+)$/', $url, $matches)) {
+            // Add the punctuation later
+            $url = $matches[1];
+        }
+
+        // Does the URL end with something that looks like an entity reference?
+        if (\preg_match('/(.+)(&[A-Za-z0-9]+;)$/', $url, $matches)) {
+            $url = $matches[1];
+        }
+
+        // Does the URL need unmatched parens chopped off?
+        if (\substr($url, -1) === ')' && ($diff = self::diffParens($url)) > 0) {
+            $url = \substr($url, 0, -$diff);
+        }
+
+        $cursor->advanceBy(\mb_strlen($url, 'UTF-8'));
+
+        // Auto-prefix 'http://' onto 'www' URLs
+        if (\substr($url, 0, 4) === 'www.') {
+            $inlineContext->getContainer()->appendChild(new Link('http://' . $url, $url));
+
+            return true;
+        }
+
+        $inlineContext->getContainer()->appendChild(new Link($url, $url));
+
+        return true;
+    }
+
+    /**
+     * @psalm-pure
+     */
+    private static function diffParens(string $content): int
+    {
+        // Scan the entire autolink for the total number of parentheses.
+        // If there is a greater number of closing parentheses than opening ones,
+        // we don’t consider ANY of the last characters as part of the autolink,
+        // in order to facilitate including an autolink inside a parenthesis.
+        \preg_match_all('/[()]/', $content, $matches);
+
+        $charCount = ['(' => 0, ')' => 0];
+        foreach ($matches[0] as $char) {
+            $charCount[$char]++;
+        }
+
+        return $charCount[')'] - $charCount['('];
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/CommonMarkCoreExtension.php

@@ -0,0 +1,92 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark;
+
+use League\CommonMark\Environment\EnvironmentBuilderInterface;
+use League\CommonMark\Extension\CommonMark\Delimiter\Processor\EmphasisDelimiterProcessor;
+use League\CommonMark\Extension\ConfigurableExtensionInterface;
+use League\CommonMark\Node as CoreNode;
+use League\CommonMark\Parser as CoreParser;
+use League\CommonMark\Renderer as CoreRenderer;
+use League\Config\ConfigurationBuilderInterface;
+use Nette\Schema\Expect;
+
+final class CommonMarkCoreExtension implements ConfigurableExtensionInterface
+{
+    public function configureSchema(ConfigurationBuilderInterface $builder): void
+    {
+        $builder->addSchema('commonmark', Expect::structure([
+            'use_asterisk' => Expect::bool(true),
+            'use_underscore' => Expect::bool(true),
+            'enable_strong' => Expect::bool(true),
+            'enable_em' => Expect::bool(true),
+            'unordered_list_markers' => Expect::listOf('string')->min(1)->default(['*', '+', '-'])->mergeDefaults(false),
+        ]));
+    }
+
+    // phpcs:disable Generic.Functions.FunctionCallArgumentSpacing.TooMuchSpaceAfterComma,Squiz.WhiteSpace.SemicolonSpacing.Incorrect
+    public function register(EnvironmentBuilderInterface $environment): void
+    {
+        $environment
+            ->addBlockStartParser(new Parser\Block\BlockQuoteStartParser(),     70)
+            ->addBlockStartParser(new Parser\Block\HeadingStartParser(),        60)
+            ->addBlockStartParser(new Parser\Block\FencedCodeStartParser(),     50)
+            ->addBlockStartParser(new Parser\Block\HtmlBlockStartParser(),      40)
+            ->addBlockStartParser(new Parser\Block\ThematicBreakStartParser(),  20)
+            ->addBlockStartParser(new Parser\Block\ListBlockStartParser(),      10)
+            ->addBlockStartParser(new Parser\Block\IndentedCodeStartParser(), -100)
+
+            ->addInlineParser(new CoreParser\Inline\NewlineParser(), 200)
+            ->addInlineParser(new Parser\Inline\BacktickParser(),    150)
+            ->addInlineParser(new Parser\Inline\EscapableParser(),    80)
+            ->addInlineParser(new Parser\Inline\EntityParser(),       70)
+            ->addInlineParser(new Parser\Inline\AutolinkParser(),     50)
+            ->addInlineParser(new Parser\Inline\HtmlInlineParser(),   40)
+            ->addInlineParser(new Parser\Inline\CloseBracketParser(), 30)
+            ->addInlineParser(new Parser\Inline\OpenBracketParser(),  20)
+            ->addInlineParser(new Parser\Inline\BangParser(),         10)
+
+            ->addRenderer(Node\Block\BlockQuote::class,    new Renderer\Block\BlockQuoteRenderer(),    0)
+            ->addRenderer(CoreNode\Block\Document::class,  new CoreRenderer\Block\DocumentRenderer(),  0)
+            ->addRenderer(Node\Block\FencedCode::class,    new Renderer\Block\FencedCodeRenderer(),    0)
+            ->addRenderer(Node\Block\Heading::class,       new Renderer\Block\HeadingRenderer(),       0)
+            ->addRenderer(Node\Block\HtmlBlock::class,     new Renderer\Block\HtmlBlockRenderer(),     0)
+            ->addRenderer(Node\Block\IndentedCode::class,  new Renderer\Block\IndentedCodeRenderer(),  0)
+            ->addRenderer(Node\Block\ListBlock::class,     new Renderer\Block\ListBlockRenderer(),     0)
+            ->addRenderer(Node\Block\ListItem::class,      new Renderer\Block\ListItemRenderer(),      0)
+            ->addRenderer(CoreNode\Block\Paragraph::class, new CoreRenderer\Block\ParagraphRenderer(), 0)
+            ->addRenderer(Node\Block\ThematicBreak::class, new Renderer\Block\ThematicBreakRenderer(), 0)
+
+            ->addRenderer(Node\Inline\Code::class,        new Renderer\Inline\CodeRenderer(),        0)
+            ->addRenderer(Node\Inline\Emphasis::class,    new Renderer\Inline\EmphasisRenderer(),    0)
+            ->addRenderer(Node\Inline\HtmlInline::class,  new Renderer\Inline\HtmlInlineRenderer(),  0)
+            ->addRenderer(Node\Inline\Image::class,       new Renderer\Inline\ImageRenderer(),       0)
+            ->addRenderer(Node\Inline\Link::class,        new Renderer\Inline\LinkRenderer(),        0)
+            ->addRenderer(CoreNode\Inline\Newline::class, new CoreRenderer\Inline\NewlineRenderer(), 0)
+            ->addRenderer(Node\Inline\Strong::class,      new Renderer\Inline\StrongRenderer(),      0)
+            ->addRenderer(CoreNode\Inline\Text::class,    new CoreRenderer\Inline\TextRenderer(),    0)
+        ;
+
+        if ($environment->getConfiguration()->get('commonmark/use_asterisk')) {
+            $environment->addDelimiterProcessor(new EmphasisDelimiterProcessor('*'));
+        }
+
+        if ($environment->getConfiguration()->get('commonmark/use_underscore')) {
+            $environment->addDelimiterProcessor(new EmphasisDelimiterProcessor('_'));
+        }
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Delimiter/Processor/EmphasisDelimiterProcessor.php

@@ -0,0 +1,108 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * Additional emphasis processing code based on commonmark-java (https://github.com/atlassian/commonmark-java)
+ *  - (c) Atlassian Pty Ltd
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Delimiter\Processor;
+
+use League\CommonMark\Delimiter\DelimiterInterface;
+use League\CommonMark\Delimiter\Processor\DelimiterProcessorInterface;
+use League\CommonMark\Extension\CommonMark\Node\Inline\Emphasis;
+use League\CommonMark\Extension\CommonMark\Node\Inline\Strong;
+use League\CommonMark\Node\Inline\AbstractStringContainer;
+use League\Config\ConfigurationAwareInterface;
+use League\Config\ConfigurationInterface;
+
+final class EmphasisDelimiterProcessor implements DelimiterProcessorInterface, ConfigurationAwareInterface
+{
+    /** @psalm-readonly */
+    private string $char;
+
+    /** @psalm-readonly-allow-private-mutation */
+    private ConfigurationInterface $config;
+
+    /**
+     * @param string $char The emphasis character to use (typically '*' or '_')
+     */
+    public function __construct(string $char)
+    {
+        $this->char = $char;
+    }
+
+    public function getOpeningCharacter(): string
+    {
+        return $this->char;
+    }
+
+    public function getClosingCharacter(): string
+    {
+        return $this->char;
+    }
+
+    public function getMinLength(): int
+    {
+        return 1;
+    }
+
+    public function getDelimiterUse(DelimiterInterface $opener, DelimiterInterface $closer): int
+    {
+        // "Multiple of 3" rule for internal delimiter runs
+        if (($opener->canClose() || $closer->canOpen()) && $closer->getOriginalLength() % 3 !== 0 && ($opener->getOriginalLength() + $closer->getOriginalLength()) % 3 === 0) {
+            return 0;
+        }
+
+        // Calculate actual number of delimiters used from this closer
+        if ($opener->getLength() >= 2 && $closer->getLength() >= 2) {
+            if ($this->config->get('commonmark/enable_strong')) {
+                return 2;
+            }
+
+            return 0;
+        }
+
+        if ($this->config->get('commonmark/enable_em')) {
+            return 1;
+        }
+
+        return 0;
+    }
+
+    public function process(AbstractStringContainer $opener, AbstractStringContainer $closer, int $delimiterUse): void
+    {
+        if ($delimiterUse === 1) {
+            $emphasis = new Emphasis($this->char);
+        } elseif ($delimiterUse === 2) {
+            $emphasis = new Strong($this->char . $this->char);
+        } else {
+            return;
+        }
+
+        $next = $opener->next();
+        while ($next !== null && $next !== $closer) {
+            $tmp = $next->next();
+            $emphasis->appendChild($next);
+            $next = $tmp;
+        }
+
+        $opener->insertAfter($emphasis);
+    }
+
+    public function setConfiguration(ConfigurationInterface $configuration): void
+    {
+        $this->config = $configuration;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Node/Block/BlockQuote.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Node\Block;
+
+use League\CommonMark\Node\Block\AbstractBlock;
+
+class BlockQuote extends AbstractBlock
+{
+}

vendor/league/commonmark/src/Extension/CommonMark/Node/Block/FencedCode.php

@@ -0,0 +1,100 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Node\Block;
+
+use League\CommonMark\Node\Block\AbstractBlock;
+use League\CommonMark\Node\StringContainerInterface;
+
+final class FencedCode extends AbstractBlock implements StringContainerInterface
+{
+    private ?string $info = null;
+
+    private string $literal = '';
+
+    private int $length;
+
+    private string $char;
+
+    private int $offset;
+
+    public function __construct(int $length, string $char, int $offset)
+    {
+        parent::__construct();
+
+        $this->length = $length;
+        $this->char   = $char;
+        $this->offset = $offset;
+    }
+
+    public function getInfo(): ?string
+    {
+        return $this->info;
+    }
+
+    /**
+     * @return string[]
+     */
+    public function getInfoWords(): array
+    {
+        return \preg_split('/\s+/', $this->info ?? '') ?: [];
+    }
+
+    public function setInfo(string $info): void
+    {
+        $this->info = $info;
+    }
+
+    public function getLiteral(): string
+    {
+        return $this->literal;
+    }
+
+    public function setLiteral(string $literal): void
+    {
+        $this->literal = $literal;
+    }
+
+    public function getChar(): string
+    {
+        return $this->char;
+    }
+
+    public function setChar(string $char): void
+    {
+        $this->char = $char;
+    }
+
+    public function getLength(): int
+    {
+        return $this->length;
+    }
+
+    public function setLength(int $length): void
+    {
+        $this->length = $length;
+    }
+
+    public function getOffset(): int
+    {
+        return $this->offset;
+    }
+
+    public function setOffset(int $offset): void
+    {
+        $this->offset = $offset;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Node/Block/Heading.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Node\Block;
+
+use League\CommonMark\Node\Block\AbstractBlock;
+
+final class Heading extends AbstractBlock
+{
+    private int $level;
+
+    public function __construct(int $level)
+    {
+        parent::__construct();
+
+        $this->level = $level;
+    }
+
+    public function getLevel(): int
+    {
+        return $this->level;
+    }
+
+    public function setLevel(int $level): void
+    {
+        $this->level = $level;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Node/Block/HtmlBlock.php

@@ -0,0 +1,79 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Node\Block;
+
+use League\CommonMark\Node\Block\AbstractBlock;
+use League\CommonMark\Node\RawMarkupContainerInterface;
+
+final class HtmlBlock extends AbstractBlock implements RawMarkupContainerInterface
+{
+    // Any changes to these constants should be reflected in .phpstorm.meta.php
+    public const TYPE_1_CODE_CONTAINER = 1;
+    public const TYPE_2_COMMENT        = 2;
+    public const TYPE_3                = 3;
+    public const TYPE_4                = 4;
+    public const TYPE_5_CDATA          = 5;
+    public const TYPE_6_BLOCK_ELEMENT  = 6;
+    public const TYPE_7_MISC_ELEMENT   = 7;
+
+    /**
+     * @psalm-var self::TYPE_* $type
+     * @phpstan-var self::TYPE_* $type
+     */
+    private int $type;
+
+    private string $literal = '';
+
+    /**
+     * @psalm-param self::TYPE_* $type
+     *
+     * @phpstan-param self::TYPE_* $type
+     */
+    public function __construct(int $type)
+    {
+        parent::__construct();
+
+        $this->type = $type;
+    }
+
+    /**
+     * @psalm-return self::TYPE_*
+     *
+     * @phpstan-return self::TYPE_*
+     */
+    public function getType(): int
+    {
+        return $this->type;
+    }
+
+    /**
+     * @psalm-param self::TYPE_* $type
+     *
+     * @phpstan-param self::TYPE_* $type
+     */
+    public function setType(int $type): void
+    {
+        $this->type = $type;
+    }
+
+    public function getLiteral(): string
+    {
+        return $this->literal;
+    }
+
+    public function setLiteral(string $literal): void
+    {
+        $this->literal = $literal;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Node/Block/IndentedCode.php

@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Node\Block;
+
+use League\CommonMark\Node\Block\AbstractBlock;
+use League\CommonMark\Node\StringContainerInterface;
+
+final class IndentedCode extends AbstractBlock implements StringContainerInterface
+{
+    private string $literal = '';
+
+    public function getLiteral(): string
+    {
+        return $this->literal;
+    }
+
+    public function setLiteral(string $literal): void
+    {
+        $this->literal = $literal;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Node/Block/ListBlock.php

@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Node\Block;
+
+use League\CommonMark\Node\Block\AbstractBlock;
+use League\CommonMark\Node\Block\TightBlockInterface;
+
+class ListBlock extends AbstractBlock implements TightBlockInterface
+{
+    public const TYPE_BULLET  = 'bullet';
+    public const TYPE_ORDERED = 'ordered';
+
+    public const DELIM_PERIOD = 'period';
+    public const DELIM_PAREN  = 'paren';
+
+    protected bool $tight = false;
+
+    /** @psalm-readonly */
+    protected ListData $listData;
+
+    public function __construct(ListData $listData)
+    {
+        parent::__construct();
+
+        $this->listData = $listData;
+    }
+
+    public function getListData(): ListData
+    {
+        return $this->listData;
+    }
+
+    public function isTight(): bool
+    {
+        return $this->tight;
+    }
+
+    public function setTight(bool $tight): void
+    {
+        $this->tight = $tight;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Node/Block/ListData.php

@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Node\Block;
+
+class ListData
+{
+    public ?int $start = null;
+
+    public int $padding = 0;
+
+    /**
+     * @psalm-var ListBlock::TYPE_*
+     * @phpstan-var ListBlock::TYPE_*
+     */
+    public string $type;
+
+    /**
+     * @psalm-var ListBlock::DELIM_*|null
+     * @phpstan-var ListBlock::DELIM_*|null
+     */
+    public ?string $delimiter = null;
+
+    public ?string $bulletChar = null;
+
+    public int $markerOffset;
+
+    public function equals(ListData $data): bool
+    {
+        return $this->type === $data->type &&
+            $this->delimiter === $data->delimiter &&
+            $this->bulletChar === $data->bulletChar;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Node/Block/ListItem.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Node\Block;
+
+use League\CommonMark\Node\Block\AbstractBlock;
+
+class ListItem extends AbstractBlock
+{
+    /** @psalm-readonly */
+    protected ListData $listData;
+
+    public function __construct(ListData $listData)
+    {
+        parent::__construct();
+
+        $this->listData = $listData;
+    }
+
+    public function getListData(): ListData
+    {
+        return $this->listData;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Node/Block/ThematicBreak.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Node\Block;
+
+use League\CommonMark\Node\Block\AbstractBlock;
+
+class ThematicBreak extends AbstractBlock
+{
+}

vendor/league/commonmark/src/Extension/CommonMark/Node/Inline/AbstractWebResource.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Node\Inline;
+
+use League\CommonMark\Node\Inline\AbstractInline;
+
+abstract class AbstractWebResource extends AbstractInline
+{
+    protected string $url;
+
+    public function __construct(string $url)
+    {
+        parent::__construct();
+
+        $this->url = $url;
+    }
+
+    public function getUrl(): string
+    {
+        return $this->url;
+    }
+
+    public function setUrl(string $url): void
+    {
+        $this->url = $url;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Node/Inline/Code.php

@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Node\Inline;
+
+use League\CommonMark\Node\Inline\AbstractStringContainer;
+
+class Code extends AbstractStringContainer
+{
+}

vendor/league/commonmark/src/Extension/CommonMark/Node/Inline/Emphasis.php

@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Node\Inline;
+
+use League\CommonMark\Node\Inline\AbstractInline;
+use League\CommonMark\Node\Inline\DelimitedInterface;
+
+final class Emphasis extends AbstractInline implements DelimitedInterface
+{
+    private string $delimiter;
+
+    public function __construct(string $delimiter = '_')
+    {
+        parent::__construct();
+
+        $this->delimiter = $delimiter;
+    }
+
+    public function getOpeningDelimiter(): string
+    {
+        return $this->delimiter;
+    }
+
+    public function getClosingDelimiter(): string
+    {
+        return $this->delimiter;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Node/Inline/HtmlInline.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Node\Inline;
+
+use League\CommonMark\Node\Inline\AbstractStringContainer;
+use League\CommonMark\Node\RawMarkupContainerInterface;
+
+final class HtmlInline extends AbstractStringContainer implements RawMarkupContainerInterface
+{
+}

vendor/league/commonmark/src/Extension/CommonMark/Node/Inline/Image.php

@@ -0,0 +1,49 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Node\Inline;
+
+use League\CommonMark\Node\Inline\Text;
+
+class Image extends AbstractWebResource
+{
+    protected ?string $title = null;
+
+    public function __construct(string $url, ?string $label = null, ?string $title = null)
+    {
+        parent::__construct($url);
+
+        if ($label !== null && $label !== '') {
+            $this->appendChild(new Text($label));
+        }
+
+        $this->title = $title;
+    }
+
+    public function getTitle(): ?string
+    {
+        if ($this->title === '') {
+            return null;
+        }
+
+        return $this->title;
+    }
+
+    public function setTitle(?string $title): void
+    {
+        $this->title = $title;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Node/Inline/Link.php

@@ -0,0 +1,49 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Node\Inline;
+
+use League\CommonMark\Node\Inline\Text;
+
+class Link extends AbstractWebResource
+{
+    protected ?string $title = null;
+
+    public function __construct(string $url, ?string $label = null, ?string $title = null)
+    {
+        parent::__construct($url);
+
+        if ($label !== null && $label !== '') {
+            $this->appendChild(new Text($label));
+        }
+
+        $this->title = $title;
+    }
+
+    public function getTitle(): ?string
+    {
+        if ($this->title === '') {
+            return null;
+        }
+
+        return $this->title;
+    }
+
+    public function setTitle(?string $title): void
+    {
+        $this->title = $title;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Node/Inline/Strong.php

@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Node\Inline;
+
+use League\CommonMark\Node\Inline\AbstractInline;
+use League\CommonMark\Node\Inline\DelimitedInterface;
+
+final class Strong extends AbstractInline implements DelimitedInterface
+{
+    private string $delimiter;
+
+    public function __construct(string $delimiter = '**')
+    {
+        parent::__construct();
+
+        $this->delimiter = $delimiter;
+    }
+
+    public function getOpeningDelimiter(): string
+    {
+        return $this->delimiter;
+    }
+
+    public function getClosingDelimiter(): string
+    {
+        return $this->delimiter;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Block/BlockQuoteParser.php

@@ -0,0 +1,60 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Block;
+
+use League\CommonMark\Extension\CommonMark\Node\Block\BlockQuote;
+use League\CommonMark\Node\Block\AbstractBlock;
+use League\CommonMark\Parser\Block\AbstractBlockContinueParser;
+use League\CommonMark\Parser\Block\BlockContinue;
+use League\CommonMark\Parser\Block\BlockContinueParserInterface;
+use League\CommonMark\Parser\Cursor;
+
+final class BlockQuoteParser extends AbstractBlockContinueParser
+{
+    /** @psalm-readonly */
+    private BlockQuote $block;
+
+    public function __construct()
+    {
+        $this->block = new BlockQuote();
+    }
+
+    public function getBlock(): BlockQuote
+    {
+        return $this->block;
+    }
+
+    public function isContainer(): bool
+    {
+        return true;
+    }
+
+    public function canContain(AbstractBlock $childBlock): bool
+    {
+        return true;
+    }
+
+    public function tryContinue(Cursor $cursor, BlockContinueParserInterface $activeBlockParser): ?BlockContinue
+    {
+        if (! $cursor->isIndented() && $cursor->getNextNonSpaceCharacter() === '>') {
+            $cursor->advanceToNextNonSpaceOrTab();
+            $cursor->advanceBy(1);
+            $cursor->advanceBySpaceOrTab();
+
+            return BlockContinue::at($cursor);
+        }
+
+        return BlockContinue::none();
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Block/BlockQuoteStartParser.php

@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Block;
+
+use League\CommonMark\Parser\Block\BlockStart;
+use League\CommonMark\Parser\Block\BlockStartParserInterface;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Parser\MarkdownParserStateInterface;
+
+final class BlockQuoteStartParser implements BlockStartParserInterface
+{
+    public function tryStart(Cursor $cursor, MarkdownParserStateInterface $parserState): ?BlockStart
+    {
+        if ($cursor->isIndented()) {
+            return BlockStart::none();
+        }
+
+        if ($cursor->getNextNonSpaceCharacter() !== '>') {
+            return BlockStart::none();
+        }
+
+        $cursor->advanceToNextNonSpaceOrTab();
+        $cursor->advanceBy(1);
+        $cursor->advanceBySpaceOrTab();
+
+        return BlockStart::of(new BlockQuoteParser())->at($cursor);
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Block/FencedCodeParser.php

@@ -0,0 +1,84 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Block;
+
+use League\CommonMark\Extension\CommonMark\Node\Block\FencedCode;
+use League\CommonMark\Parser\Block\AbstractBlockContinueParser;
+use League\CommonMark\Parser\Block\BlockContinue;
+use League\CommonMark\Parser\Block\BlockContinueParserInterface;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Util\ArrayCollection;
+use League\CommonMark\Util\RegexHelper;
+
+final class FencedCodeParser extends AbstractBlockContinueParser
+{
+    /** @psalm-readonly */
+    private FencedCode $block;
+
+    /** @var ArrayCollection<string> */
+    private ArrayCollection $strings;
+
+    public function __construct(int $fenceLength, string $fenceChar, int $fenceOffset)
+    {
+        $this->block   = new FencedCode($fenceLength, $fenceChar, $fenceOffset);
+        $this->strings = new ArrayCollection();
+    }
+
+    public function getBlock(): FencedCode
+    {
+        return $this->block;
+    }
+
+    public function tryContinue(Cursor $cursor, BlockContinueParserInterface $activeBlockParser): ?BlockContinue
+    {
+        // Check for closing code fence
+        if (! $cursor->isIndented() && $cursor->getNextNonSpaceCharacter() === $this->block->getChar()) {
+            $match = RegexHelper::matchFirst('/^(?:`{3,}|~{3,})(?= *$)/', $cursor->getLine(), $cursor->getNextNonSpacePosition());
+            if ($match !== null && \strlen($match[0]) >= $this->block->getLength()) {
+                // closing fence - we're at end of line, so we can finalize now
+                return BlockContinue::finished();
+            }
+        }
+
+        // Skip optional spaces of fence offset
+        // Optimization: don't attempt to match if we're at a non-space position
+        if ($cursor->getNextNonSpacePosition() > $cursor->getPosition()) {
+            $cursor->match('/^ {0,' . $this->block->getOffset() . '}/');
+        }
+
+        return BlockContinue::at($cursor);
+    }
+
+    public function addLine(string $line): void
+    {
+        $this->strings[] = $line;
+    }
+
+    public function closeBlock(): void
+    {
+        // first line becomes info string
+        $firstLine = $this->strings->first();
+        if ($firstLine === false) {
+            $firstLine = '';
+        }
+
+        $this->block->setInfo(RegexHelper::unescape(\trim($firstLine)));
+
+        if ($this->strings->count() === 1) {
+            $this->block->setLiteral('');
+        } else {
+            $this->block->setLiteral(\implode("\n", $this->strings->slice(1)) . "\n");
+        }
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Block/FencedCodeStartParser.php

@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Block;
+
+use League\CommonMark\Parser\Block\BlockStart;
+use League\CommonMark\Parser\Block\BlockStartParserInterface;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Parser\MarkdownParserStateInterface;
+
+final class FencedCodeStartParser implements BlockStartParserInterface
+{
+    public function tryStart(Cursor $cursor, MarkdownParserStateInterface $parserState): ?BlockStart
+    {
+        if ($cursor->isIndented() || ! \in_array($cursor->getNextNonSpaceCharacter(), ['`', '~'], true)) {
+            return BlockStart::none();
+        }
+
+        $indent = $cursor->getIndent();
+        $fence  = $cursor->match('/^[ \t]*(?:`{3,}(?!.*`)|~{3,})/');
+        if ($fence === null) {
+            return BlockStart::none();
+        }
+
+        // fenced code block
+        $fence = \ltrim($fence, " \t");
+
+        return BlockStart::of(new FencedCodeParser(\strlen($fence), $fence[0], $indent))->at($cursor);
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Block/HeadingParser.php

@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Block;
+
+use League\CommonMark\Extension\CommonMark\Node\Block\Heading;
+use League\CommonMark\Parser\Block\AbstractBlockContinueParser;
+use League\CommonMark\Parser\Block\BlockContinue;
+use League\CommonMark\Parser\Block\BlockContinueParserInterface;
+use League\CommonMark\Parser\Block\BlockContinueParserWithInlinesInterface;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Parser\InlineParserEngineInterface;
+
+final class HeadingParser extends AbstractBlockContinueParser implements BlockContinueParserWithInlinesInterface
+{
+    /** @psalm-readonly */
+    private Heading $block;
+
+    private string $content;
+
+    public function __construct(int $level, string $content)
+    {
+        $this->block   = new Heading($level);
+        $this->content = $content;
+    }
+
+    public function getBlock(): Heading
+    {
+        return $this->block;
+    }
+
+    public function tryContinue(Cursor $cursor, BlockContinueParserInterface $activeBlockParser): ?BlockContinue
+    {
+        return BlockContinue::none();
+    }
+
+    public function parseInlines(InlineParserEngineInterface $inlineParser): void
+    {
+        $inlineParser->parse($this->content, $this->block);
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Block/HeadingStartParser.php

@@ -0,0 +1,80 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Block;
+
+use League\CommonMark\Parser\Block\BlockStart;
+use League\CommonMark\Parser\Block\BlockStartParserInterface;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Parser\MarkdownParserStateInterface;
+use League\CommonMark\Util\RegexHelper;
+
+class HeadingStartParser implements BlockStartParserInterface
+{
+    public function tryStart(Cursor $cursor, MarkdownParserStateInterface $parserState): ?BlockStart
+    {
+        if ($cursor->isIndented() || ! \in_array($cursor->getNextNonSpaceCharacter(), ['#', '-', '='], true)) {
+            return BlockStart::none();
+        }
+
+        $cursor->advanceToNextNonSpaceOrTab();
+
+        if ($atxHeading = self::getAtxHeader($cursor)) {
+            return BlockStart::of($atxHeading)->at($cursor);
+        }
+
+        $setextHeadingLevel = self::getSetextHeadingLevel($cursor);
+        if ($setextHeadingLevel > 0) {
+            $content = $parserState->getParagraphContent();
+            if ($content !== null) {
+                $cursor->advanceToEnd();
+
+                return BlockStart::of(new HeadingParser($setextHeadingLevel, $content))
+                    ->at($cursor)
+                    ->replaceActiveBlockParser();
+            }
+        }
+
+        return BlockStart::none();
+    }
+
+    private static function getAtxHeader(Cursor $cursor): ?HeadingParser
+    {
+        $match = RegexHelper::matchFirst('/^#{1,6}(?:[ \t]+|$)/', $cursor->getRemainder());
+        if (! $match) {
+            return null;
+        }
+
+        $cursor->advanceToNextNonSpaceOrTab();
+        $cursor->advanceBy(\strlen($match[0]));
+
+        $level = \strlen(\trim($match[0]));
+        $str   = $cursor->getRemainder();
+        $str   = \preg_replace('/^[ \t]*#+[ \t]*$/', '', $str);
+        \assert(\is_string($str));
+        $str = \preg_replace('/[ \t]+#+[ \t]*$/', '', $str);
+        \assert(\is_string($str));
+
+        return new HeadingParser($level, $str);
+    }
+
+    private static function getSetextHeadingLevel(Cursor $cursor): int
+    {
+        $match = RegexHelper::matchFirst('/^(?:=+|-+)[ \t]*$/', $cursor->getRemainder());
+        if ($match === null) {
+            return 0;
+        }
+
+        return $match[0][0] === '=' ? 1 : 2;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Block/HtmlBlockParser.php

@@ -0,0 +1,82 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Block;
+
+use League\CommonMark\Extension\CommonMark\Node\Block\HtmlBlock;
+use League\CommonMark\Parser\Block\AbstractBlockContinueParser;
+use League\CommonMark\Parser\Block\BlockContinue;
+use League\CommonMark\Parser\Block\BlockContinueParserInterface;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Util\RegexHelper;
+
+final class HtmlBlockParser extends AbstractBlockContinueParser
+{
+    /** @psalm-readonly */
+    private HtmlBlock $block;
+
+    private string $content = '';
+
+    private bool $finished = false;
+
+    /**
+     * @psalm-param HtmlBlock::TYPE_* $blockType
+     *
+     * @phpstan-param HtmlBlock::TYPE_* $blockType
+     */
+    public function __construct(int $blockType)
+    {
+        $this->block = new HtmlBlock($blockType);
+    }
+
+    public function getBlock(): HtmlBlock
+    {
+        return $this->block;
+    }
+
+    public function tryContinue(Cursor $cursor, BlockContinueParserInterface $activeBlockParser): ?BlockContinue
+    {
+        if ($this->finished) {
+            return BlockContinue::none();
+        }
+
+        if ($cursor->isBlank() && \in_array($this->block->getType(), [HtmlBlock::TYPE_6_BLOCK_ELEMENT, HtmlBlock::TYPE_7_MISC_ELEMENT], true)) {
+            return BlockContinue::none();
+        }
+
+        return BlockContinue::at($cursor);
+    }
+
+    public function addLine(string $line): void
+    {
+        if ($this->content !== '') {
+            $this->content .= "\n";
+        }
+
+        $this->content .= $line;
+
+        // Check for end condition
+        // phpcs:disable SlevomatCodingStandard.ControlStructures.EarlyExit.EarlyExitNotUsed
+        if ($this->block->getType() <= HtmlBlock::TYPE_5_CDATA) {
+            if (\preg_match(RegexHelper::getHtmlBlockCloseRegex($this->block->getType()), $line) === 1) {
+                $this->finished = true;
+            }
+        }
+    }
+
+    public function closeBlock(): void
+    {
+        $this->block->setLiteral($this->content);
+        $this->content = '';
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Block/HtmlBlockStartParser.php

@@ -0,0 +1,62 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Block;
+
+use League\CommonMark\Extension\CommonMark\Node\Block\HtmlBlock;
+use League\CommonMark\Node\Block\Paragraph;
+use League\CommonMark\Parser\Block\BlockStart;
+use League\CommonMark\Parser\Block\BlockStartParserInterface;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Parser\MarkdownParserStateInterface;
+use League\CommonMark\Util\RegexHelper;
+
+final class HtmlBlockStartParser implements BlockStartParserInterface
+{
+    public function tryStart(Cursor $cursor, MarkdownParserStateInterface $parserState): ?BlockStart
+    {
+        if ($cursor->isIndented() || $cursor->getNextNonSpaceCharacter() !== '<') {
+            return BlockStart::none();
+        }
+
+        $tmpCursor = clone $cursor;
+        $tmpCursor->advanceToNextNonSpaceOrTab();
+        $line = $tmpCursor->getRemainder();
+
+        for ($blockType = 1; $blockType <= 7; $blockType++) {
+            /** @psalm-var HtmlBlock::TYPE_* $blockType */
+            /** @phpstan-var HtmlBlock::TYPE_* $blockType */
+            $match = RegexHelper::matchAt(
+                RegexHelper::getHtmlBlockOpenRegex($blockType),
+                $line
+            );
+
+            if ($match !== null && ($blockType < 7 || $this->isType7BlockAllowed($cursor, $parserState))) {
+                return BlockStart::of(new HtmlBlockParser($blockType))->at($cursor);
+            }
+        }
+
+        return BlockStart::none();
+    }
+
+    private function isType7BlockAllowed(Cursor $cursor, MarkdownParserStateInterface $parserState): bool
+    {
+        // Type 7 blocks can't interrupt paragraphs
+        if ($parserState->getLastMatchedBlockParser()->getBlock() instanceof Paragraph) {
+            return false;
+        }
+
+        // Even lazy ones
+        return ! $parserState->getActiveBlockParser()->canHaveLazyContinuationLines();
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Block/IndentedCodeParser.php

@@ -0,0 +1,83 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Block;
+
+use League\CommonMark\Extension\CommonMark\Node\Block\IndentedCode;
+use League\CommonMark\Parser\Block\AbstractBlockContinueParser;
+use League\CommonMark\Parser\Block\BlockContinue;
+use League\CommonMark\Parser\Block\BlockContinueParserInterface;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Util\ArrayCollection;
+
+final class IndentedCodeParser extends AbstractBlockContinueParser
+{
+    /** @psalm-readonly */
+    private IndentedCode $block;
+
+    /** @var ArrayCollection<string> */
+    private ArrayCollection $strings;
+
+    public function __construct()
+    {
+        $this->block   = new IndentedCode();
+        $this->strings = new ArrayCollection();
+    }
+
+    public function getBlock(): IndentedCode
+    {
+        return $this->block;
+    }
+
+    public function tryContinue(Cursor $cursor, BlockContinueParserInterface $activeBlockParser): ?BlockContinue
+    {
+        if ($cursor->isIndented()) {
+            $cursor->advanceBy(Cursor::INDENT_LEVEL, true);
+
+            return BlockContinue::at($cursor);
+        }
+
+        if ($cursor->isBlank()) {
+            $cursor->advanceToNextNonSpaceOrTab();
+
+            return BlockContinue::at($cursor);
+        }
+
+        return BlockContinue::none();
+    }
+
+    public function addLine(string $line): void
+    {
+        $this->strings[] = $line;
+    }
+
+    public function closeBlock(): void
+    {
+        $reversed = \array_reverse($this->strings->toArray(), true);
+        foreach ($reversed as $index => $line) {
+            if ($line !== '' && $line !== "\n" && ! \preg_match('/^(\n *)$/', $line)) {
+                break;
+            }
+
+            unset($reversed[$index]);
+        }
+
+        $fixed = \array_reverse($reversed);
+        $tmp   = \implode("\n", $fixed);
+        if (\substr($tmp, -1) !== "\n") {
+            $tmp .= "\n";
+        }
+
+        $this->block->setLiteral($tmp);
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Block/IndentedCodeStartParser.php

@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Block;
+
+use League\CommonMark\Node\Block\Paragraph;
+use League\CommonMark\Parser\Block\BlockStart;
+use League\CommonMark\Parser\Block\BlockStartParserInterface;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Parser\MarkdownParserStateInterface;
+
+final class IndentedCodeStartParser implements BlockStartParserInterface
+{
+    public function tryStart(Cursor $cursor, MarkdownParserStateInterface $parserState): ?BlockStart
+    {
+        if (! $cursor->isIndented()) {
+            return BlockStart::none();
+        }
+
+        if ($parserState->getActiveBlockParser()->getBlock() instanceof Paragraph) {
+            return BlockStart::none();
+        }
+
+        if ($cursor->isBlank()) {
+            return BlockStart::none();
+        }
+
+        $cursor->advanceBy(Cursor::INDENT_LEVEL, true);
+
+        return BlockStart::of(new IndentedCodeParser())->at($cursor);
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Block/ListBlockParser.php

@@ -0,0 +1,79 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Block;
+
+use League\CommonMark\Extension\CommonMark\Node\Block\ListBlock;
+use League\CommonMark\Extension\CommonMark\Node\Block\ListData;
+use League\CommonMark\Extension\CommonMark\Node\Block\ListItem;
+use League\CommonMark\Node\Block\AbstractBlock;
+use League\CommonMark\Parser\Block\AbstractBlockContinueParser;
+use League\CommonMark\Parser\Block\BlockContinue;
+use League\CommonMark\Parser\Block\BlockContinueParserInterface;
+use League\CommonMark\Parser\Cursor;
+
+final class ListBlockParser extends AbstractBlockContinueParser
+{
+    /** @psalm-readonly */
+    private ListBlock $block;
+
+    private bool $hadBlankLine = false;
+
+    private int $linesAfterBlank = 0;
+
+    public function __construct(ListData $listData)
+    {
+        $this->block = new ListBlock($listData);
+    }
+
+    public function getBlock(): ListBlock
+    {
+        return $this->block;
+    }
+
+    public function isContainer(): bool
+    {
+        return true;
+    }
+
+    public function canContain(AbstractBlock $childBlock): bool
+    {
+        if (! $childBlock instanceof ListItem) {
+            return false;
+        }
+
+        // Another list item is being added to this list block.
+        // If the previous line was blank, that means this list
+        // block is "loose" (not tight).
+        if ($this->hadBlankLine && $this->linesAfterBlank === 1) {
+            $this->block->setTight(false);
+            $this->hadBlankLine = false;
+        }
+
+        return true;
+    }
+
+    public function tryContinue(Cursor $cursor, BlockContinueParserInterface $activeBlockParser): ?BlockContinue
+    {
+        if ($cursor->isBlank()) {
+            $this->hadBlankLine    = true;
+            $this->linesAfterBlank = 0;
+        } elseif ($this->hadBlankLine) {
+            $this->linesAfterBlank++;
+        }
+
+        // List blocks themselves don't have any markers, only list items. So try to stay in the list.
+        // If there is a block start other than list item, canContain makes sure that this list is closed.
+        return BlockContinue::at($cursor);
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Block/ListBlockStartParser.php

@@ -0,0 +1,146 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Block;
+
+use League\CommonMark\Extension\CommonMark\Node\Block\ListBlock;
+use League\CommonMark\Extension\CommonMark\Node\Block\ListData;
+use League\CommonMark\Parser\Block\BlockStart;
+use League\CommonMark\Parser\Block\BlockStartParserInterface;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Parser\MarkdownParserStateInterface;
+use League\CommonMark\Util\RegexHelper;
+use League\Config\ConfigurationAwareInterface;
+use League\Config\ConfigurationInterface;
+
+final class ListBlockStartParser implements BlockStartParserInterface, ConfigurationAwareInterface
+{
+    /** @psalm-readonly-allow-private-mutation */
+    private ?ConfigurationInterface $config = null;
+
+    /** @psalm-readonly-allow-private-mutation */
+    private ?string $listMarkerRegex = null;
+
+    public function setConfiguration(ConfigurationInterface $configuration): void
+    {
+        $this->config = $configuration;
+    }
+
+    public function tryStart(Cursor $cursor, MarkdownParserStateInterface $parserState): ?BlockStart
+    {
+        if ($cursor->isIndented()) {
+            return BlockStart::none();
+        }
+
+        $listData = $this->parseList($cursor, $parserState->getParagraphContent() !== null);
+        if ($listData === null) {
+            return BlockStart::none();
+        }
+
+        $listItemParser = new ListItemParser($listData);
+
+        // prepend the list block if needed
+        $matched = $parserState->getLastMatchedBlockParser();
+        if (! ($matched instanceof ListBlockParser) || ! $listData->equals($matched->getBlock()->getListData())) {
+            $listBlockParser = new ListBlockParser($listData);
+            // We start out with assuming a list is tight. If we find a blank line, we set it to loose later.
+            $listBlockParser->getBlock()->setTight(true);
+
+            return BlockStart::of($listBlockParser, $listItemParser)->at($cursor);
+        }
+
+        return BlockStart::of($listItemParser)->at($cursor);
+    }
+
+    private function parseList(Cursor $cursor, bool $inParagraph): ?ListData
+    {
+        $indent = $cursor->getIndent();
+
+        $tmpCursor = clone $cursor;
+        $tmpCursor->advanceToNextNonSpaceOrTab();
+        $rest = $tmpCursor->getRemainder();
+
+        if (\preg_match($this->listMarkerRegex ?? $this->generateListMarkerRegex(), $rest) === 1) {
+            $data               = new ListData();
+            $data->markerOffset = $indent;
+            $data->type         = ListBlock::TYPE_BULLET;
+            $data->delimiter    = null;
+            $data->bulletChar   = $rest[0];
+            $markerLength       = 1;
+        } elseif (($matches = RegexHelper::matchFirst('/^(\d{1,9})([.)])/', $rest)) && (! $inParagraph || $matches[1] === '1')) {
+            $data               = new ListData();
+            $data->markerOffset = $indent;
+            $data->type         = ListBlock::TYPE_ORDERED;
+            $data->start        = (int) $matches[1];
+            $data->delimiter    = $matches[2] === '.' ? ListBlock::DELIM_PERIOD : ListBlock::DELIM_PAREN;
+            $data->bulletChar   = null;
+            $markerLength       = \strlen($matches[0]);
+        } else {
+            return null;
+        }
+
+        // Make sure we have spaces after
+        $nextChar = $tmpCursor->peek($markerLength);
+        if (! ($nextChar === null || $nextChar === "\t" || $nextChar === ' ')) {
+            return null;
+        }
+
+        // If it interrupts paragraph, make sure first line isn't blank
+        if ($inParagraph && ! RegexHelper::matchAt(RegexHelper::REGEX_NON_SPACE, $rest, $markerLength)) {
+            return null;
+        }
+
+        $cursor->advanceToNextNonSpaceOrTab(); // to start of marker
+        $cursor->advanceBy($markerLength, true); // to end of marker
+        $data->padding = self::calculateListMarkerPadding($cursor, $markerLength);
+
+        return $data;
+    }
+
+    private static function calculateListMarkerPadding(Cursor $cursor, int $markerLength): int
+    {
+        $start          = $cursor->saveState();
+        $spacesStartCol = $cursor->getColumn();
+
+        while ($cursor->getColumn() - $spacesStartCol < 5) {
+            if (! $cursor->advanceBySpaceOrTab()) {
+                break;
+            }
+        }
+
+        $blankItem         = $cursor->peek() === null;
+        $spacesAfterMarker = $cursor->getColumn() - $spacesStartCol;
+
+        if ($spacesAfterMarker >= 5 || $spacesAfterMarker < 1 || $blankItem) {
+            $cursor->restoreState($start);
+            $cursor->advanceBySpaceOrTab();
+
+            return $markerLength + 1;
+        }
+
+        return $markerLength + $spacesAfterMarker;
+    }
+
+    private function generateListMarkerRegex(): string
+    {
+        // No configuration given - use the defaults
+        if ($this->config === null) {
+            return $this->listMarkerRegex = '/^[*+-]/';
+        }
+
+        $markers = $this->config->get('commonmark/unordered_list_markers');
+        \assert(\is_array($markers));
+
+        return $this->listMarkerRegex = '/^[' . \preg_quote(\implode('', $markers), '/') . ']/';
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Block/ListItemParser.php

@@ -0,0 +1,90 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Block;
+
+use League\CommonMark\Extension\CommonMark\Node\Block\ListBlock;
+use League\CommonMark\Extension\CommonMark\Node\Block\ListData;
+use League\CommonMark\Extension\CommonMark\Node\Block\ListItem;
+use League\CommonMark\Node\Block\AbstractBlock;
+use League\CommonMark\Node\Block\Paragraph;
+use League\CommonMark\Parser\Block\AbstractBlockContinueParser;
+use League\CommonMark\Parser\Block\BlockContinue;
+use League\CommonMark\Parser\Block\BlockContinueParserInterface;
+use League\CommonMark\Parser\Cursor;
+
+final class ListItemParser extends AbstractBlockContinueParser
+{
+    /** @psalm-readonly */
+    private ListItem $block;
+
+    private bool $hadBlankLine = false;
+
+    public function __construct(ListData $listData)
+    {
+        $this->block = new ListItem($listData);
+    }
+
+    public function getBlock(): ListItem
+    {
+        return $this->block;
+    }
+
+    public function isContainer(): bool
+    {
+        return true;
+    }
+
+    public function canContain(AbstractBlock $childBlock): bool
+    {
+        if ($this->hadBlankLine) {
+            // We saw a blank line in this list item, that means the list block is loose.
+            //
+            // spec: if any of its constituent list items directly contain two block-level elements with a blank line
+            // between them
+            $parent = $this->block->parent();
+            if ($parent instanceof ListBlock) {
+                $parent->setTight(false);
+            }
+        }
+
+        return true;
+    }
+
+    public function tryContinue(Cursor $cursor, BlockContinueParserInterface $activeBlockParser): ?BlockContinue
+    {
+        if ($cursor->isBlank()) {
+            if ($this->block->firstChild() === null) {
+                // Blank line after empty list item
+                return BlockContinue::none();
+            }
+
+            $activeBlock = $activeBlockParser->getBlock();
+            // If the active block is a code block, blank lines in it should not affect if the list is tight.
+            $this->hadBlankLine = $activeBlock instanceof Paragraph || $activeBlock instanceof ListItem;
+            $cursor->advanceToNextNonSpaceOrTab();
+
+            return BlockContinue::at($cursor);
+        }
+
+        $contentIndent = $this->block->getListData()->markerOffset + $this->getBlock()->getListData()->padding;
+        if ($cursor->getIndent() >= $contentIndent) {
+            $cursor->advanceBy($contentIndent, true);
+
+            return BlockContinue::at($cursor);
+        }
+
+        // Note: We'll hit this case for lazy continuation lines, they will get added later.
+        return BlockContinue::none();
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Block/ThematicBreakParser.php

@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Block;
+
+use League\CommonMark\Extension\CommonMark\Node\Block\ThematicBreak;
+use League\CommonMark\Parser\Block\AbstractBlockContinueParser;
+use League\CommonMark\Parser\Block\BlockContinue;
+use League\CommonMark\Parser\Block\BlockContinueParserInterface;
+use League\CommonMark\Parser\Cursor;
+
+final class ThematicBreakParser extends AbstractBlockContinueParser
+{
+    /** @psalm-readonly */
+    private ThematicBreak $block;
+
+    public function __construct()
+    {
+        $this->block = new ThematicBreak();
+    }
+
+    public function getBlock(): ThematicBreak
+    {
+        return $this->block;
+    }
+
+    public function tryContinue(Cursor $cursor, BlockContinueParserInterface $activeBlockParser): ?BlockContinue
+    {
+        // a horizontal rule can never container > 1 line, so fail to match
+        return BlockContinue::none();
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Block/ThematicBreakStartParser.php

@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Block;
+
+use League\CommonMark\Parser\Block\BlockStart;
+use League\CommonMark\Parser\Block\BlockStartParserInterface;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Parser\MarkdownParserStateInterface;
+use League\CommonMark\Util\RegexHelper;
+
+final class ThematicBreakStartParser implements BlockStartParserInterface
+{
+    public function tryStart(Cursor $cursor, MarkdownParserStateInterface $parserState): ?BlockStart
+    {
+        if ($cursor->isIndented()) {
+            return BlockStart::none();
+        }
+
+        $match = RegexHelper::matchAt(RegexHelper::REGEX_THEMATIC_BREAK, $cursor->getLine(), $cursor->getNextNonSpacePosition());
+        if ($match === null) {
+            return BlockStart::none();
+        }
+
+        // Advance to the end of the string, consuming the entire line (of the thematic break)
+        $cursor->advanceToEnd();
+
+        return BlockStart::of(new ThematicBreakParser())->at($cursor);
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Inline/AutolinkParser.php

@@ -0,0 +1,54 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Inline;
+
+use League\CommonMark\Extension\CommonMark\Node\Inline\Link;
+use League\CommonMark\Parser\Inline\InlineParserInterface;
+use League\CommonMark\Parser\Inline\InlineParserMatch;
+use League\CommonMark\Parser\InlineParserContext;
+use League\CommonMark\Util\UrlEncoder;
+
+final class AutolinkParser implements InlineParserInterface
+{
+    private const EMAIL_REGEX      = '<([a-zA-Z0-9.!#$%&\'*+\\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*)>';
+    private const OTHER_LINK_REGEX = '<([A-Za-z][A-Za-z0-9.+-]{1,31}:[^<>\x00-\x20]*)>';
+
+    public function getMatchDefinition(): InlineParserMatch
+    {
+        return InlineParserMatch::regex(self::EMAIL_REGEX . '|' . self::OTHER_LINK_REGEX);
+    }
+
+    public function parse(InlineParserContext $inlineContext): bool
+    {
+        $inlineContext->getCursor()->advanceBy($inlineContext->getFullMatchLength());
+        $matches = $inlineContext->getMatches();
+
+        if ($matches[1] !== '') {
+            $inlineContext->getContainer()->appendChild(new Link('mailto:' . UrlEncoder::unescapeAndEncode($matches[1]), $matches[1]));
+
+            return true;
+        }
+
+        if ($matches[2] !== '') {
+            $inlineContext->getContainer()->appendChild(new Link(UrlEncoder::unescapeAndEncode($matches[2]), $matches[2]));
+
+            return true;
+        }
+
+        return false; // This should never happen
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Inline/BacktickParser.php

@@ -0,0 +1,70 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Inline;
+
+use League\CommonMark\Extension\CommonMark\Node\Inline\Code;
+use League\CommonMark\Node\Inline\Text;
+use League\CommonMark\Parser\Inline\InlineParserInterface;
+use League\CommonMark\Parser\Inline\InlineParserMatch;
+use League\CommonMark\Parser\InlineParserContext;
+
+final class BacktickParser implements InlineParserInterface
+{
+    public function getMatchDefinition(): InlineParserMatch
+    {
+        return InlineParserMatch::regex('`+');
+    }
+
+    public function parse(InlineParserContext $inlineContext): bool
+    {
+        $ticks  = $inlineContext->getFullMatch();
+        $cursor = $inlineContext->getCursor();
+        $cursor->advanceBy($inlineContext->getFullMatchLength());
+
+        $currentPosition = $cursor->getPosition();
+        $previousState   = $cursor->saveState();
+
+        while ($matchingTicks = $cursor->match('/`+/m')) {
+            if ($matchingTicks !== $ticks) {
+                continue;
+            }
+
+            $code = $cursor->getSubstring($currentPosition, $cursor->getPosition() - $currentPosition - \strlen($ticks));
+
+            $c = \preg_replace('/\n/m', ' ', $code) ?? '';
+
+            if (
+                $c !== '' &&
+                $c[0] === ' ' &&
+                \substr($c, -1, 1) === ' ' &&
+                \preg_match('/[^ ]/', $c)
+            ) {
+                $c = \substr($c, 1, -1);
+            }
+
+            $inlineContext->getContainer()->appendChild(new Code($c));
+
+            return true;
+        }
+
+        // If we got here, we didn't match a closing backtick sequence
+        $cursor->restoreState($previousState);
+        $inlineContext->getContainer()->appendChild(new Text($ticks));
+
+        return true;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Inline/BangParser.php

@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Inline;
+
+use League\CommonMark\Delimiter\Delimiter;
+use League\CommonMark\Node\Inline\Text;
+use League\CommonMark\Parser\Inline\InlineParserInterface;
+use League\CommonMark\Parser\Inline\InlineParserMatch;
+use League\CommonMark\Parser\InlineParserContext;
+
+final class BangParser implements InlineParserInterface
+{
+    public function getMatchDefinition(): InlineParserMatch
+    {
+        return InlineParserMatch::string('![');
+    }
+
+    public function parse(InlineParserContext $inlineContext): bool
+    {
+        $cursor = $inlineContext->getCursor();
+        $cursor->advanceBy(2);
+
+        $node = new Text('![', ['delim' => true]);
+        $inlineContext->getContainer()->appendChild($node);
+
+        // Add entry to stack for this opener
+        $delimiter = new Delimiter('!', 1, $node, true, false, $cursor->getPosition());
+        $inlineContext->getDelimiterStack()->push($delimiter);
+
+        return true;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Inline/CloseBracketParser.php

@@ -0,0 +1,212 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Inline;
+
+use League\CommonMark\Environment\EnvironmentAwareInterface;
+use League\CommonMark\Environment\EnvironmentInterface;
+use League\CommonMark\Extension\CommonMark\Node\Inline\AbstractWebResource;
+use League\CommonMark\Extension\CommonMark\Node\Inline\Image;
+use League\CommonMark\Extension\CommonMark\Node\Inline\Link;
+use League\CommonMark\Extension\Mention\Mention;
+use League\CommonMark\Node\Inline\AdjacentTextMerger;
+use League\CommonMark\Node\Inline\Text;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Parser\Inline\InlineParserInterface;
+use League\CommonMark\Parser\Inline\InlineParserMatch;
+use League\CommonMark\Parser\InlineParserContext;
+use League\CommonMark\Reference\ReferenceInterface;
+use League\CommonMark\Reference\ReferenceMapInterface;
+use League\CommonMark\Util\LinkParserHelper;
+use League\CommonMark\Util\RegexHelper;
+
+final class CloseBracketParser implements InlineParserInterface, EnvironmentAwareInterface
+{
+    /** @psalm-readonly-allow-private-mutation */
+    private EnvironmentInterface $environment;
+
+    public function getMatchDefinition(): InlineParserMatch
+    {
+        return InlineParserMatch::string(']');
+    }
+
+    public function parse(InlineParserContext $inlineContext): bool
+    {
+        // Look through stack of delimiters for a [ or !
+        $opener = $inlineContext->getDelimiterStack()->searchByCharacter(['[', '!']);
+        if ($opener === null) {
+            return false;
+        }
+
+        if (! $opener->isActive()) {
+            // no matched opener; remove from emphasis stack
+            $inlineContext->getDelimiterStack()->removeDelimiter($opener);
+
+            return false;
+        }
+
+        $cursor = $inlineContext->getCursor();
+
+        $startPos      = $cursor->getPosition();
+        $previousState = $cursor->saveState();
+
+        $cursor->advanceBy(1);
+
+        // Check to see if we have a link/image
+
+        // Inline link?
+        if ($result = $this->tryParseInlineLinkAndTitle($cursor)) {
+            $link = $result;
+        } elseif ($link = $this->tryParseReference($cursor, $inlineContext->getReferenceMap(), $opener->getIndex(), $startPos)) {
+            $reference = $link;
+            $link      = ['url' => $link->getDestination(), 'title' => $link->getTitle()];
+        } else {
+            // No match
+            $inlineContext->getDelimiterStack()->removeDelimiter($opener); // Remove this opener from stack
+            $cursor->restoreState($previousState);
+
+            return false;
+        }
+
+        $isImage = $opener->getChar() === '!';
+
+        $inline = $this->createInline($link['url'], $link['title'], $isImage, $reference ?? null);
+        $opener->getInlineNode()->replaceWith($inline);
+        while (($label = $inline->next()) !== null) {
+            // Is there a Mention or Link contained within this link?
+            // CommonMark does not allow nested links, so we'll restore the original text.
+            if ($label instanceof Mention) {
+                $label->replaceWith($replacement = new Text($label->getPrefix() . $label->getIdentifier()));
+                $inline->appendChild($replacement);
+            } elseif ($label instanceof Link) {
+                foreach ($label->children() as $child) {
+                    $label->insertBefore($child);
+                }
+
+                $label->detach();
+            } else {
+                $inline->appendChild($label);
+            }
+        }
+
+        // Process delimiters such as emphasis inside link/image
+        $delimiterStack = $inlineContext->getDelimiterStack();
+        $stackBottom    = $opener->getPrevious();
+        $delimiterStack->processDelimiters($stackBottom, $this->environment->getDelimiterProcessors());
+        $delimiterStack->removeAll($stackBottom);
+
+        // Merge any adjacent Text nodes together
+        AdjacentTextMerger::mergeChildNodes($inline);
+
+        // processEmphasis will remove this and later delimiters.
+        // Now, for a link, we also remove earlier link openers (no links in links)
+        if (! $isImage) {
+            $inlineContext->getDelimiterStack()->removeEarlierMatches('[');
+        }
+
+        return true;
+    }
+
+    public function setEnvironment(EnvironmentInterface $environment): void
+    {
+        $this->environment = $environment;
+    }
+
+    /**
+     * @return array<string, string>|null
+     */
+    private function tryParseInlineLinkAndTitle(Cursor $cursor): ?array
+    {
+        if ($cursor->getCurrentCharacter() !== '(') {
+            return null;
+        }
+
+        $previousState = $cursor->saveState();
+
+        $cursor->advanceBy(1);
+        $cursor->advanceToNextNonSpaceOrNewline();
+        if (($dest = LinkParserHelper::parseLinkDestination($cursor)) === null) {
+            $cursor->restoreState($previousState);
+
+            return null;
+        }
+
+        $cursor->advanceToNextNonSpaceOrNewline();
+        $previousCharacter = $cursor->peek(-1);
+        // We know from previous lines that we've advanced at least one space so far, so this next call should never be null
+        \assert(\is_string($previousCharacter));
+
+        $title = '';
+        // make sure there's a space before the title:
+        if (\preg_match(RegexHelper::REGEX_WHITESPACE_CHAR, $previousCharacter)) {
+            $title = LinkParserHelper::parseLinkTitle($cursor) ?? '';
+        }
+
+        $cursor->advanceToNextNonSpaceOrNewline();
+
+        if ($cursor->getCurrentCharacter() !== ')') {
+            $cursor->restoreState($previousState);
+
+            return null;
+        }
+
+        $cursor->advanceBy(1);
+
+        return ['url' => $dest, 'title' => $title];
+    }
+
+    private function tryParseReference(Cursor $cursor, ReferenceMapInterface $referenceMap, ?int $openerIndex, int $startPos): ?ReferenceInterface
+    {
+        if ($openerIndex === null) {
+            return null;
+        }
+
+        $savePos     = $cursor->saveState();
+        $beforeLabel = $cursor->getPosition();
+        $n           = LinkParserHelper::parseLinkLabel($cursor);
+        if ($n === 0 || $n === 2) {
+            $start  = $openerIndex;
+            $length = $startPos - $openerIndex;
+        } else {
+            $start  = $beforeLabel + 1;
+            $length = $n - 2;
+        }
+
+        $referenceLabel = $cursor->getSubstring($start, $length);
+
+        if ($n === 0) {
+            // If shortcut reference link, rewind before spaces we skipped
+            $cursor->restoreState($savePos);
+        }
+
+        return $referenceMap->get($referenceLabel);
+    }
+
+    private function createInline(string $url, string $title, bool $isImage, ?ReferenceInterface $reference = null): AbstractWebResource
+    {
+        if ($isImage) {
+            $inline = new Image($url, null, $title);
+        } else {
+            $inline = new Link($url, null, $title);
+        }
+
+        if ($reference) {
+            $inline->data->set('reference', $reference);
+        }
+
+        return $inline;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Inline/EntityParser.php

@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Inline;
+
+use League\CommonMark\Node\Inline\Text;
+use League\CommonMark\Parser\Inline\InlineParserInterface;
+use League\CommonMark\Parser\Inline\InlineParserMatch;
+use League\CommonMark\Parser\InlineParserContext;
+use League\CommonMark\Util\Html5EntityDecoder;
+use League\CommonMark\Util\RegexHelper;
+
+final class EntityParser implements InlineParserInterface
+{
+    public function getMatchDefinition(): InlineParserMatch
+    {
+        return InlineParserMatch::regex(RegexHelper::PARTIAL_ENTITY);
+    }
+
+    public function parse(InlineParserContext $inlineContext): bool
+    {
+        $entity = $inlineContext->getFullMatch();
+
+        $inlineContext->getCursor()->advanceBy($inlineContext->getFullMatchLength());
+        $inlineContext->getContainer()->appendChild(new Text(Html5EntityDecoder::decode($entity)));
+
+        return true;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Inline/EscapableParser.php

@@ -0,0 +1,57 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Inline;
+
+use League\CommonMark\Node\Inline\Newline;
+use League\CommonMark\Node\Inline\Text;
+use League\CommonMark\Parser\Inline\InlineParserInterface;
+use League\CommonMark\Parser\Inline\InlineParserMatch;
+use League\CommonMark\Parser\InlineParserContext;
+use League\CommonMark\Util\RegexHelper;
+
+final class EscapableParser implements InlineParserInterface
+{
+    public function getMatchDefinition(): InlineParserMatch
+    {
+        return InlineParserMatch::string('\\');
+    }
+
+    public function parse(InlineParserContext $inlineContext): bool
+    {
+        $cursor   = $inlineContext->getCursor();
+        $nextChar = $cursor->peek();
+
+        if ($nextChar === "\n") {
+            $cursor->advanceBy(2);
+            $inlineContext->getContainer()->appendChild(new Newline(Newline::HARDBREAK));
+
+            return true;
+        }
+
+        if ($nextChar !== null && RegexHelper::isEscapable($nextChar)) {
+            $cursor->advanceBy(2);
+            $inlineContext->getContainer()->appendChild(new Text($nextChar));
+
+            return true;
+        }
+
+        $cursor->advanceBy(1);
+        $inlineContext->getContainer()->appendChild(new Text('\\'));
+
+        return true;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Inline/HtmlInlineParser.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Inline;
+
+use League\CommonMark\Extension\CommonMark\Node\Inline\HtmlInline;
+use League\CommonMark\Parser\Inline\InlineParserInterface;
+use League\CommonMark\Parser\Inline\InlineParserMatch;
+use League\CommonMark\Parser\InlineParserContext;
+use League\CommonMark\Util\RegexHelper;
+
+final class HtmlInlineParser implements InlineParserInterface
+{
+    public function getMatchDefinition(): InlineParserMatch
+    {
+        return InlineParserMatch::regex(RegexHelper::PARTIAL_HTMLTAG)->caseSensitive();
+    }
+
+    public function parse(InlineParserContext $inlineContext): bool
+    {
+        $inline = $inlineContext->getFullMatch();
+
+        $inlineContext->getCursor()->advanceBy($inlineContext->getFullMatchLength());
+        $inlineContext->getContainer()->appendChild(new HtmlInline($inline));
+
+        return true;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Parser/Inline/OpenBracketParser.php

@@ -0,0 +1,44 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Parser\Inline;
+
+use League\CommonMark\Delimiter\Delimiter;
+use League\CommonMark\Node\Inline\Text;
+use League\CommonMark\Parser\Inline\InlineParserInterface;
+use League\CommonMark\Parser\Inline\InlineParserMatch;
+use League\CommonMark\Parser\InlineParserContext;
+
+final class OpenBracketParser implements InlineParserInterface
+{
+    public function getMatchDefinition(): InlineParserMatch
+    {
+        return InlineParserMatch::string('[');
+    }
+
+    public function parse(InlineParserContext $inlineContext): bool
+    {
+        $inlineContext->getCursor()->advanceBy(1);
+        $node = new Text('[', ['delim' => true]);
+        $inlineContext->getContainer()->appendChild($node);
+
+        // Add entry to stack for this opener
+        $delimiter = new Delimiter('[', 1, $node, true, false, $inlineContext->getCursor()->getPosition());
+        $inlineContext->getDelimiterStack()->push($delimiter);
+
+        return true;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Renderer/Block/BlockQuoteRenderer.php

@@ -0,0 +1,70 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Renderer\Block;
+
+use League\CommonMark\Extension\CommonMark\Node\Block\BlockQuote;
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+use League\CommonMark\Util\HtmlElement;
+use League\CommonMark\Xml\XmlNodeRendererInterface;
+
+final class BlockQuoteRenderer implements NodeRendererInterface, XmlNodeRendererInterface
+{
+    /**
+     * @param BlockQuote $node
+     *
+     * {@inheritDoc}
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer): \Stringable
+    {
+        BlockQuote::assertInstanceOf($node);
+
+        $attrs = $node->data->get('attributes');
+
+        $filling        = $childRenderer->renderNodes($node->children());
+        $innerSeparator = $childRenderer->getInnerSeparator();
+        if ($filling === '') {
+            return new HtmlElement('blockquote', $attrs, $innerSeparator);
+        }
+
+        return new HtmlElement(
+            'blockquote',
+            $attrs,
+            $innerSeparator . $filling . $innerSeparator
+        );
+    }
+
+    public function getXmlTagName(Node $node): string
+    {
+        return 'block_quote';
+    }
+
+    /**
+     * @param BlockQuote $node
+     *
+     * @return array<string, scalar>
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function getXmlAttributes(Node $node): array
+    {
+        return [];
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Renderer/Block/FencedCodeRenderer.php

@@ -0,0 +1,76 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Renderer\Block;
+
+use League\CommonMark\Extension\CommonMark\Node\Block\FencedCode;
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+use League\CommonMark\Util\HtmlElement;
+use League\CommonMark\Util\Xml;
+use League\CommonMark\Xml\XmlNodeRendererInterface;
+
+final class FencedCodeRenderer implements NodeRendererInterface, XmlNodeRendererInterface
+{
+    /**
+     * @param FencedCode $node
+     *
+     * {@inheritDoc}
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer): \Stringable
+    {
+        FencedCode::assertInstanceOf($node);
+
+        $attrs = $node->data->getData('attributes');
+
+        $infoWords = $node->getInfoWords();
+        if (\count($infoWords) !== 0 && $infoWords[0] !== '') {
+            $attrs->append('class', 'language-' . $infoWords[0]);
+        }
+
+        return new HtmlElement(
+            'pre',
+            [],
+            new HtmlElement('code', $attrs->export(), Xml::escape($node->getLiteral()))
+        );
+    }
+
+    public function getXmlTagName(Node $node): string
+    {
+        return 'code_block';
+    }
+
+    /**
+     * @param FencedCode $node
+     *
+     * @return array<string, scalar>
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function getXmlAttributes(Node $node): array
+    {
+        FencedCode::assertInstanceOf($node);
+
+        if (($info = $node->getInfo()) === null || $info === '') {
+            return [];
+        }
+
+        return ['info' => $info];
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Renderer/Block/HeadingRenderer.php

@@ -0,0 +1,64 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Renderer\Block;
+
+use League\CommonMark\Extension\CommonMark\Node\Block\Heading;
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+use League\CommonMark\Util\HtmlElement;
+use League\CommonMark\Xml\XmlNodeRendererInterface;
+
+final class HeadingRenderer implements NodeRendererInterface, XmlNodeRendererInterface
+{
+    /**
+     * @param Heading $node
+     *
+     * {@inheritDoc}
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer): \Stringable
+    {
+        Heading::assertInstanceOf($node);
+
+        $tag = 'h' . $node->getLevel();
+
+        $attrs = $node->data->get('attributes');
+
+        return new HtmlElement($tag, $attrs, $childRenderer->renderNodes($node->children()));
+    }
+
+    public function getXmlTagName(Node $node): string
+    {
+        return 'heading';
+    }
+
+    /**
+     * @param Heading $node
+     *
+     * @return array<string, scalar>
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function getXmlAttributes(Node $node): array
+    {
+        Heading::assertInstanceOf($node);
+
+        return ['level' => $node->getLevel()];
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Renderer/Block/HtmlBlockRenderer.php

@@ -0,0 +1,66 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Renderer\Block;
+
+use League\CommonMark\Extension\CommonMark\Node\Block\HtmlBlock;
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+use League\CommonMark\Util\HtmlFilter;
+use League\CommonMark\Xml\XmlNodeRendererInterface;
+use League\Config\ConfigurationAwareInterface;
+use League\Config\ConfigurationInterface;
+
+final class HtmlBlockRenderer implements NodeRendererInterface, XmlNodeRendererInterface, ConfigurationAwareInterface
+{
+    /** @psalm-readonly-allow-private-mutation */
+    private ConfigurationInterface $config;
+
+    /**
+     * @param HtmlBlock $node
+     *
+     * {@inheritDoc}
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer): string
+    {
+        HtmlBlock::assertInstanceOf($node);
+
+        $htmlInput = $this->config->get('html_input');
+
+        return HtmlFilter::filter($node->getLiteral(), $htmlInput);
+    }
+
+    public function setConfiguration(ConfigurationInterface $configuration): void
+    {
+        $this->config = $configuration;
+    }
+
+    public function getXmlTagName(Node $node): string
+    {
+        return 'html_block';
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getXmlAttributes(Node $node): array
+    {
+        return [];
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Renderer/Block/IndentedCodeRenderer.php

@@ -0,0 +1,61 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Renderer\Block;
+
+use League\CommonMark\Extension\CommonMark\Node\Block\IndentedCode;
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+use League\CommonMark\Util\HtmlElement;
+use League\CommonMark\Util\Xml;
+use League\CommonMark\Xml\XmlNodeRendererInterface;
+
+final class IndentedCodeRenderer implements NodeRendererInterface, XmlNodeRendererInterface
+{
+    /**
+     * @param IndentedCode $node
+     *
+     * {@inheritDoc}
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer): \Stringable
+    {
+        IndentedCode::assertInstanceOf($node);
+
+        $attrs = $node->data->get('attributes');
+
+        return new HtmlElement(
+            'pre',
+            [],
+            new HtmlElement('code', $attrs, Xml::escape($node->getLiteral()))
+        );
+    }
+
+    public function getXmlTagName(Node $node): string
+    {
+        return 'code_block';
+    }
+
+    /**
+     * @return array<string, scalar>
+     */
+    public function getXmlAttributes(Node $node): array
+    {
+        return [];
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Renderer/Block/ListBlockRenderer.php

@@ -0,0 +1,86 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Renderer\Block;
+
+use League\CommonMark\Extension\CommonMark\Node\Block\ListBlock;
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+use League\CommonMark\Util\HtmlElement;
+use League\CommonMark\Xml\XmlNodeRendererInterface;
+
+final class ListBlockRenderer implements NodeRendererInterface, XmlNodeRendererInterface
+{
+    /**
+     * @param ListBlock $node
+     *
+     * {@inheritDoc}
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer): \Stringable
+    {
+        ListBlock::assertInstanceOf($node);
+
+        $listData = $node->getListData();
+
+        $tag = $listData->type === ListBlock::TYPE_BULLET ? 'ul' : 'ol';
+
+        $attrs = $node->data->get('attributes');
+
+        if ($listData->start !== null && $listData->start !== 1) {
+            $attrs['start'] = (string) $listData->start;
+        }
+
+        $innerSeparator = $childRenderer->getInnerSeparator();
+
+        return new HtmlElement($tag, $attrs, $innerSeparator . $childRenderer->renderNodes($node->children()) . $innerSeparator);
+    }
+
+    public function getXmlTagName(Node $node): string
+    {
+        return 'list';
+    }
+
+    /**
+     * @param ListBlock $node
+     *
+     * @return array<string, scalar>
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function getXmlAttributes(Node $node): array
+    {
+        ListBlock::assertInstanceOf($node);
+
+        $data = $node->getListData();
+
+        if ($data->type === ListBlock::TYPE_BULLET) {
+            return [
+                'type' => $data->type,
+                'tight' => $node->isTight() ? 'true' : 'false',
+            ];
+        }
+
+        return [
+            'type' => $data->type,
+            'start' => $data->start ?? 1,
+            'tight' => $node->isTight(),
+            'delimiter' => $data->delimiter ?? ListBlock::DELIM_PERIOD,
+        ];
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Renderer/Block/ListItemRenderer.php

@@ -0,0 +1,74 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Renderer\Block;
+
+use League\CommonMark\Extension\CommonMark\Node\Block\ListItem;
+use League\CommonMark\Extension\TaskList\TaskListItemMarker;
+use League\CommonMark\Node\Block\Paragraph;
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+use League\CommonMark\Util\HtmlElement;
+use League\CommonMark\Xml\XmlNodeRendererInterface;
+
+final class ListItemRenderer implements NodeRendererInterface, XmlNodeRendererInterface
+{
+    /**
+     * @param ListItem $node
+     *
+     * {@inheritDoc}
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer): \Stringable
+    {
+        ListItem::assertInstanceOf($node);
+
+        $contents = $childRenderer->renderNodes($node->children());
+        if (\substr($contents, 0, 1) === '<' && ! $this->startsTaskListItem($node)) {
+            $contents = "\n" . $contents;
+        }
+
+        if (\substr($contents, -1, 1) === '>') {
+            $contents .= "\n";
+        }
+
+        $attrs = $node->data->get('attributes');
+
+        return new HtmlElement('li', $attrs, $contents);
+    }
+
+    public function getXmlTagName(Node $node): string
+    {
+        return 'item';
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getXmlAttributes(Node $node): array
+    {
+        return [];
+    }
+
+    private function startsTaskListItem(ListItem $block): bool
+    {
+        $firstChild = $block->firstChild();
+
+        return $firstChild instanceof Paragraph && $firstChild->firstChild() instanceof TaskListItemMarker;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Renderer/Block/ThematicBreakRenderer.php

@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Renderer\Block;
+
+use League\CommonMark\Extension\CommonMark\Node\Block\ThematicBreak;
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+use League\CommonMark\Util\HtmlElement;
+use League\CommonMark\Xml\XmlNodeRendererInterface;
+
+final class ThematicBreakRenderer implements NodeRendererInterface, XmlNodeRendererInterface
+{
+    /**
+     * @param ThematicBreak $node
+     *
+     * {@inheritDoc}
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer): \Stringable
+    {
+        ThematicBreak::assertInstanceOf($node);
+
+        $attrs = $node->data->get('attributes');
+
+        return new HtmlElement('hr', $attrs, '', true);
+    }
+
+    public function getXmlTagName(Node $node): string
+    {
+        return 'thematic_break';
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getXmlAttributes(Node $node): array
+    {
+        return [];
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Renderer/Inline/CodeRenderer.php

@@ -0,0 +1,57 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Renderer\Inline;
+
+use League\CommonMark\Extension\CommonMark\Node\Inline\Code;
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+use League\CommonMark\Util\HtmlElement;
+use League\CommonMark\Util\Xml;
+use League\CommonMark\Xml\XmlNodeRendererInterface;
+
+final class CodeRenderer implements NodeRendererInterface, XmlNodeRendererInterface
+{
+    /**
+     * @param Code $node
+     *
+     * {@inheritDoc}
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer): \Stringable
+    {
+        Code::assertInstanceOf($node);
+
+        $attrs = $node->data->get('attributes');
+
+        return new HtmlElement('code', $attrs, Xml::escape($node->getLiteral()));
+    }
+
+    public function getXmlTagName(Node $node): string
+    {
+        return 'code';
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getXmlAttributes(Node $node): array
+    {
+        return [];
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Renderer/Inline/EmphasisRenderer.php

@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Renderer\Inline;
+
+use League\CommonMark\Extension\CommonMark\Node\Inline\Emphasis;
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+use League\CommonMark\Util\HtmlElement;
+use League\CommonMark\Xml\XmlNodeRendererInterface;
+
+final class EmphasisRenderer implements NodeRendererInterface, XmlNodeRendererInterface
+{
+    /**
+     * @param Emphasis $node
+     *
+     * {@inheritDoc}
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer): \Stringable
+    {
+        Emphasis::assertInstanceOf($node);
+
+        $attrs = $node->data->get('attributes');
+
+        return new HtmlElement('em', $attrs, $childRenderer->renderNodes($node->children()));
+    }
+
+    public function getXmlTagName(Node $node): string
+    {
+        return 'emph';
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getXmlAttributes(Node $node): array
+    {
+        return [];
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Renderer/Inline/HtmlInlineRenderer.php

@@ -0,0 +1,66 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Renderer\Inline;
+
+use League\CommonMark\Extension\CommonMark\Node\Inline\HtmlInline;
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+use League\CommonMark\Util\HtmlFilter;
+use League\CommonMark\Xml\XmlNodeRendererInterface;
+use League\Config\ConfigurationAwareInterface;
+use League\Config\ConfigurationInterface;
+
+final class HtmlInlineRenderer implements NodeRendererInterface, XmlNodeRendererInterface, ConfigurationAwareInterface
+{
+    /** @psalm-readonly-allow-private-mutation */
+    private ConfigurationInterface $config;
+
+    /**
+     * @param HtmlInline $node
+     *
+     * {@inheritDoc}
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer): string
+    {
+        HtmlInline::assertInstanceOf($node);
+
+        $htmlInput = $this->config->get('html_input');
+
+        return HtmlFilter::filter($node->getLiteral(), $htmlInput);
+    }
+
+    public function setConfiguration(ConfigurationInterface $configuration): void
+    {
+        $this->config = $configuration;
+    }
+
+    public function getXmlTagName(Node $node): string
+    {
+        return 'html_inline';
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getXmlAttributes(Node $node): array
+    {
+        return [];
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Renderer/Inline/ImageRenderer.php

@@ -0,0 +1,107 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Renderer\Inline;
+
+use League\CommonMark\Extension\CommonMark\Node\Inline\Image;
+use League\CommonMark\Node\Inline\Newline;
+use League\CommonMark\Node\Node;
+use League\CommonMark\Node\NodeIterator;
+use League\CommonMark\Node\StringContainerInterface;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+use League\CommonMark\Util\HtmlElement;
+use League\CommonMark\Util\RegexHelper;
+use League\CommonMark\Xml\XmlNodeRendererInterface;
+use League\Config\ConfigurationAwareInterface;
+use League\Config\ConfigurationInterface;
+
+final class ImageRenderer implements NodeRendererInterface, XmlNodeRendererInterface, ConfigurationAwareInterface
+{
+    /** @psalm-readonly-allow-private-mutation */
+    private ConfigurationInterface $config;
+
+    /**
+     * @param Image $node
+     *
+     * {@inheritDoc}
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer): \Stringable
+    {
+        Image::assertInstanceOf($node);
+
+        $attrs = $node->data->get('attributes');
+
+        $forbidUnsafeLinks = ! $this->config->get('allow_unsafe_links');
+        if ($forbidUnsafeLinks && RegexHelper::isLinkPotentiallyUnsafe($node->getUrl())) {
+            $attrs['src'] = '';
+        } else {
+            $attrs['src'] = $node->getUrl();
+        }
+
+        $attrs['alt'] = $this->getAltText($node);
+
+        if (($title = $node->getTitle()) !== null) {
+            $attrs['title'] = $title;
+        }
+
+        return new HtmlElement('img', $attrs, '', true);
+    }
+
+    public function setConfiguration(ConfigurationInterface $configuration): void
+    {
+        $this->config = $configuration;
+    }
+
+    public function getXmlTagName(Node $node): string
+    {
+        return 'image';
+    }
+
+    /**
+     * @param Image $node
+     *
+     * @return array<string, scalar>
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function getXmlAttributes(Node $node): array
+    {
+        Image::assertInstanceOf($node);
+
+        return [
+            'destination' => $node->getUrl(),
+            'title' => $node->getTitle() ?? '',
+        ];
+    }
+
+    private function getAltText(Image $node): string
+    {
+        $altText = '';
+
+        foreach ((new NodeIterator($node)) as $n) {
+            if ($n instanceof StringContainerInterface) {
+                $altText .= $n->getLiteral();
+            } elseif ($n instanceof Newline) {
+                $altText .= "\n";
+            }
+        }
+
+        return $altText;
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Renderer/Inline/LinkRenderer.php

@@ -0,0 +1,89 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Renderer\Inline;
+
+use League\CommonMark\Extension\CommonMark\Node\Inline\Link;
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+use League\CommonMark\Util\HtmlElement;
+use League\CommonMark\Util\RegexHelper;
+use League\CommonMark\Xml\XmlNodeRendererInterface;
+use League\Config\ConfigurationAwareInterface;
+use League\Config\ConfigurationInterface;
+
+final class LinkRenderer implements NodeRendererInterface, XmlNodeRendererInterface, ConfigurationAwareInterface
+{
+    /** @psalm-readonly-allow-private-mutation */
+    private ConfigurationInterface $config;
+
+    /**
+     * @param Link $node
+     *
+     * {@inheritDoc}
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer): \Stringable
+    {
+        Link::assertInstanceOf($node);
+
+        $attrs = $node->data->get('attributes');
+
+        $forbidUnsafeLinks = ! $this->config->get('allow_unsafe_links');
+        if (! ($forbidUnsafeLinks && RegexHelper::isLinkPotentiallyUnsafe($node->getUrl()))) {
+            $attrs['href'] = $node->getUrl();
+        }
+
+        if (($title = $node->getTitle()) !== null) {
+            $attrs['title'] = $title;
+        }
+
+        if (isset($attrs['target']) && $attrs['target'] === '_blank' && ! isset($attrs['rel'])) {
+            $attrs['rel'] = 'noopener noreferrer';
+        }
+
+        return new HtmlElement('a', $attrs, $childRenderer->renderNodes($node->children()));
+    }
+
+    public function setConfiguration(ConfigurationInterface $configuration): void
+    {
+        $this->config = $configuration;
+    }
+
+    public function getXmlTagName(Node $node): string
+    {
+        return 'link';
+    }
+
+    /**
+     * @param Link $node
+     *
+     * @return array<string, scalar>
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function getXmlAttributes(Node $node): array
+    {
+        Link::assertInstanceOf($node);
+
+        return [
+            'destination' => $node->getUrl(),
+            'title' => $node->getTitle() ?? '',
+        ];
+    }
+}

vendor/league/commonmark/src/Extension/CommonMark/Renderer/Inline/StrongRenderer.php

@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\CommonMark\Renderer\Inline;
+
+use League\CommonMark\Extension\CommonMark\Node\Inline\Strong;
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+use League\CommonMark\Util\HtmlElement;
+use League\CommonMark\Xml\XmlNodeRendererInterface;
+
+final class StrongRenderer implements NodeRendererInterface, XmlNodeRendererInterface
+{
+    /**
+     * @param Strong $node
+     *
+     * {@inheritDoc}
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer): \Stringable
+    {
+        Strong::assertInstanceOf($node);
+
+        $attrs = $node->data->get('attributes');
+
+        return new HtmlElement('strong', $attrs, $childRenderer->renderNodes($node->children()));
+    }
+
+    public function getXmlTagName(Node $node): string
+    {
+        return 'strong';
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getXmlAttributes(Node $node): array
+    {
+        return [];
+    }
+}

vendor/league/commonmark/src/Extension/ConfigurableExtensionInterface.php

@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension;
+
+use League\Config\ConfigurationBuilderInterface;
+
+interface ConfigurableExtensionInterface extends ExtensionInterface
+{
+    public function configureSchema(ConfigurationBuilderInterface $builder): void;
+}

vendor/league/commonmark/src/Extension/DefaultAttributes/ApplyDefaultAttributesProcessor.php

@@ -0,0 +1,65 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\DefaultAttributes;
+
+use League\CommonMark\Event\DocumentParsedEvent;
+use League\CommonMark\Extension\Attributes\Util\AttributesHelper;
+use League\Config\ConfigurationAwareInterface;
+use League\Config\ConfigurationInterface;
+
+final class ApplyDefaultAttributesProcessor implements ConfigurationAwareInterface
+{
+    private ConfigurationInterface $config;
+
+    public function onDocumentParsed(DocumentParsedEvent $event): void
+    {
+        /** @var array<string, array<string, mixed>> $map */
+        $map = $this->config->get('default_attributes');
+
+        // Don't bother iterating if no default attributes are configured
+        if (! $map) {
+            return;
+        }
+
+        foreach ($event->getDocument()->iterator() as $node) {
+            // Check to see if any default attributes were defined
+            if (($attributesToApply = $map[\get_class($node)] ?? []) === []) {
+                continue;
+            }
+
+            $newAttributes = [];
+            foreach ($attributesToApply as $name => $value) {
+                if (\is_callable($value)) {
+                    $value = $value($node);
+                    // Callables are allowed to return `null` indicating that no changes should be made
+                    if ($value !== null) {
+                        $newAttributes[$name] = $value;
+                    }
+                } else {
+                    $newAttributes[$name] = $value;
+                }
+            }
+
+            // Merge these attributes into the node
+            if (\count($newAttributes) > 0) {
+                $node->data->set('attributes', AttributesHelper::mergeAttributes($node, $newAttributes));
+            }
+        }
+    }
+
+    public function setConfiguration(ConfigurationInterface $configuration): void
+    {
+        $this->config = $configuration;
+    }
+}

vendor/league/commonmark/src/Extension/DefaultAttributes/DefaultAttributesExtension.php

@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\DefaultAttributes;
+
+use League\CommonMark\Environment\EnvironmentBuilderInterface;
+use League\CommonMark\Event\DocumentParsedEvent;
+use League\CommonMark\Extension\ConfigurableExtensionInterface;
+use League\Config\ConfigurationBuilderInterface;
+use Nette\Schema\Expect;
+
+final class DefaultAttributesExtension implements ConfigurableExtensionInterface
+{
+    public function configureSchema(ConfigurationBuilderInterface $builder): void
+    {
+        $builder->addSchema('default_attributes', Expect::arrayOf(
+            Expect::arrayOf(
+                Expect::type('string|string[]|bool|callable'), // attribute value(s)
+                'string' // attribute name
+            ),
+            'string' // node FQCN
+        )->default([]));
+    }
+
+    public function register(EnvironmentBuilderInterface $environment): void
+    {
+        $environment->addEventListener(DocumentParsedEvent::class, [new ApplyDefaultAttributesProcessor(), 'onDocumentParsed']);
+    }
+}

vendor/league/commonmark/src/Extension/DescriptionList/DescriptionListExtension.php

@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\DescriptionList;
+
+use League\CommonMark\Environment\EnvironmentBuilderInterface;
+use League\CommonMark\Event\DocumentParsedEvent;
+use League\CommonMark\Extension\DescriptionList\Event\ConsecutiveDescriptionListMerger;
+use League\CommonMark\Extension\DescriptionList\Event\LooseDescriptionHandler;
+use League\CommonMark\Extension\DescriptionList\Node\Description;
+use League\CommonMark\Extension\DescriptionList\Node\DescriptionList;
+use League\CommonMark\Extension\DescriptionList\Node\DescriptionTerm;
+use League\CommonMark\Extension\DescriptionList\Parser\DescriptionStartParser;
+use League\CommonMark\Extension\DescriptionList\Renderer\DescriptionListRenderer;
+use League\CommonMark\Extension\DescriptionList\Renderer\DescriptionRenderer;
+use League\CommonMark\Extension\DescriptionList\Renderer\DescriptionTermRenderer;
+use League\CommonMark\Extension\ExtensionInterface;
+
+final class DescriptionListExtension implements ExtensionInterface
+{
+    public function register(EnvironmentBuilderInterface $environment): void
+    {
+        $environment->addBlockStartParser(new DescriptionStartParser());
+
+        $environment->addEventListener(DocumentParsedEvent::class, new LooseDescriptionHandler(), 1001);
+        $environment->addEventListener(DocumentParsedEvent::class, new ConsecutiveDescriptionListMerger(), 1000);
+
+        $environment->addRenderer(DescriptionList::class, new DescriptionListRenderer());
+        $environment->addRenderer(DescriptionTerm::class, new DescriptionTermRenderer());
+        $environment->addRenderer(Description::class, new DescriptionRenderer());
+    }
+}

vendor/league/commonmark/src/Extension/DescriptionList/Event/ConsecutiveDescriptionListMerger.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\DescriptionList\Event;
+
+use League\CommonMark\Event\DocumentParsedEvent;
+use League\CommonMark\Extension\DescriptionList\Node\DescriptionList;
+use League\CommonMark\Node\NodeIterator;
+
+final class ConsecutiveDescriptionListMerger
+{
+    public function __invoke(DocumentParsedEvent $event): void
+    {
+        foreach ($event->getDocument()->iterator(NodeIterator::FLAG_BLOCKS_ONLY) as $node) {
+            if (! $node instanceof DescriptionList) {
+                continue;
+            }
+
+            if (! ($prev = $node->previous()) instanceof DescriptionList) {
+                continue;
+            }
+
+            // There's another description list behind this one; merge the current one into that
+            foreach ($node->children() as $child) {
+                $prev->appendChild($child);
+            }
+
+            $node->detach();
+        }
+    }
+}

vendor/league/commonmark/src/Extension/DescriptionList/Event/LooseDescriptionHandler.php

@@ -0,0 +1,66 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\DescriptionList\Event;
+
+use League\CommonMark\Event\DocumentParsedEvent;
+use League\CommonMark\Extension\DescriptionList\Node\Description;
+use League\CommonMark\Extension\DescriptionList\Node\DescriptionList;
+use League\CommonMark\Extension\DescriptionList\Node\DescriptionTerm;
+use League\CommonMark\Node\Block\Paragraph;
+use League\CommonMark\Node\Inline\Newline;
+use League\CommonMark\Node\NodeIterator;
+
+final class LooseDescriptionHandler
+{
+    public function __invoke(DocumentParsedEvent $event): void
+    {
+        foreach ($event->getDocument()->iterator(NodeIterator::FLAG_BLOCKS_ONLY) as $description) {
+            if (! $description instanceof Description) {
+                continue;
+            }
+
+            // Does this description need to be added to a list?
+            if (! $description->parent() instanceof DescriptionList) {
+                $list = new DescriptionList();
+                // Taking any preceding paragraphs with it
+                if (($paragraph = $description->previous()) instanceof Paragraph) {
+                    $list->appendChild($paragraph);
+                }
+
+                $description->replaceWith($list);
+                $list->appendChild($description);
+            }
+
+            // Is this description preceded by a paragraph that should really be a term?
+            if (! (($paragraph = $description->previous()) instanceof Paragraph)) {
+                continue;
+            }
+
+            // Convert the paragraph into one or more terms
+            $term = new DescriptionTerm();
+            $paragraph->replaceWith($term);
+
+            foreach ($paragraph->children() as $child) {
+                if ($child instanceof Newline) {
+                    $newTerm = new DescriptionTerm();
+                    $term->insertAfter($newTerm);
+                    $term = $newTerm;
+                    continue;
+                }
+
+                $term->appendChild($child);
+            }
+        }
+    }
+}

vendor/league/commonmark/src/Extension/DescriptionList/Node/Description.php

@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\DescriptionList\Node;
+
+use League\CommonMark\Node\Block\AbstractBlock;
+use League\CommonMark\Node\Block\TightBlockInterface;
+
+class Description extends AbstractBlock implements TightBlockInterface
+{
+    private bool $tight;
+
+    public function __construct(bool $tight = false)
+    {
+        parent::__construct();
+
+        $this->tight = $tight;
+    }
+
+    public function isTight(): bool
+    {
+        return $this->tight;
+    }
+
+    public function setTight(bool $tight): void
+    {
+        $this->tight = $tight;
+    }
+}

vendor/league/commonmark/src/Extension/DescriptionList/Node/DescriptionList.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\DescriptionList\Node;
+
+use League\CommonMark\Node\Block\AbstractBlock;
+
+class DescriptionList extends AbstractBlock
+{
+}

vendor/league/commonmark/src/Extension/DescriptionList/Node/DescriptionTerm.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\DescriptionList\Node;
+
+use League\CommonMark\Node\Block\AbstractBlock;
+
+class DescriptionTerm extends AbstractBlock
+{
+}

vendor/league/commonmark/src/Extension/DescriptionList/Parser/DescriptionContinueParser.php

@@ -0,0 +1,71 @@
+<?php
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace League\CommonMark\Extension\DescriptionList\Parser;
+
+use League\CommonMark\Extension\DescriptionList\Node\Description;
+use League\CommonMark\Node\Block\AbstractBlock;
+use League\CommonMark\Parser\Block\AbstractBlockContinueParser;
+use League\CommonMark\Parser\Block\BlockContinue;
+use League\CommonMark\Parser\Block\BlockContinueParserInterface;
+use League\CommonMark\Parser\Cursor;
+
+final class DescriptionContinueParser extends AbstractBlockContinueParser
+{
+    private Description $block;
+
+    private int $indentation;
+
+    public function __construct(bool $tight, int $indentation)
+    {
+        $this->block       = new Description($tight);
+        $this->indentation = $indentation;
+    }
+
+    public function getBlock(): Description
+    {
+        return $this->block;
+    }
+
+    public function tryContinue(Cursor $cursor, BlockContinueParserInterface $activeBlockParser): ?BlockContinue
+    {
+        if ($cursor->isBlank()) {
+            if ($this->block->firstChild() === null) {
+                // Blank line after empty item
+                return BlockContinue::none();
+            }
+
+            $cursor->advanceToNextNonSpaceOrTab();
+
+            return BlockContinue::at($cursor);
+        }
+
+        if ($cursor->getIndent() >= $this->indentation) {
+            $cursor->advanceBy($this->indentation, true);
+
+            return BlockContinue::at($cursor);
+        }
+
+        return BlockContinue::none();
+    }
+
+    public function isContainer(): bool
+    {
+        return true;
+    }
+
+    public function canContain(AbstractBlock $childBlock): bool
+    {
+        return true;
+    }
+}

vendor/league/commonmark/src/Extension/DescriptionList/Parser/DescriptionListContinueParser.php

@@ -0,0 +1,53 @@
+<?php
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace League\CommonMark\Extension\DescriptionList\Parser;
+
+use League\CommonMark\Extension\DescriptionList\Node\Description;
+use League\CommonMark\Extension\DescriptionList\Node\DescriptionList;
+use League\CommonMark\Extension\DescriptionList\Node\DescriptionTerm;
+use League\CommonMark\Node\Block\AbstractBlock;
+use League\CommonMark\Parser\Block\AbstractBlockContinueParser;
+use League\CommonMark\Parser\Block\BlockContinue;
+use League\CommonMark\Parser\Block\BlockContinueParserInterface;
+use League\CommonMark\Parser\Cursor;
+
+final class DescriptionListContinueParser extends AbstractBlockContinueParser
+{
+    private DescriptionList $block;
+
+    public function __construct()
+    {
+        $this->block = new DescriptionList();
+    }
+
+    public function getBlock(): DescriptionList
+    {
+        return $this->block;
+    }
+
+    public function tryContinue(Cursor $cursor, BlockContinueParserInterface $activeBlockParser): ?BlockContinue
+    {
+        return BlockContinue::at($cursor);
+    }
+
+    public function isContainer(): bool
+    {
+        return true;
+    }
+
+    public function canContain(AbstractBlock $childBlock): bool
+    {
+        return $childBlock instanceof DescriptionTerm || $childBlock instanceof Description;
+    }
+}

vendor/league/commonmark/src/Extension/DescriptionList/Parser/DescriptionStartParser.php

@@ -0,0 +1,73 @@
+<?php
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace League\CommonMark\Extension\DescriptionList\Parser;
+
+use League\CommonMark\Extension\DescriptionList\Node\Description;
+use League\CommonMark\Node\Block\Paragraph;
+use League\CommonMark\Parser\Block\BlockStart;
+use League\CommonMark\Parser\Block\BlockStartParserInterface;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Parser\MarkdownParserStateInterface;
+
+final class DescriptionStartParser implements BlockStartParserInterface
+{
+    public function tryStart(Cursor $cursor, MarkdownParserStateInterface $parserState): ?BlockStart
+    {
+        if ($cursor->isIndented()) {
+            return BlockStart::none();
+        }
+
+        $cursor->advanceToNextNonSpaceOrTab();
+        if ($cursor->match('/^:[ \t]+/') === null) {
+            return BlockStart::none();
+        }
+
+        $terms = $parserState->getParagraphContent();
+
+        $activeBlock = $parserState->getActiveBlockParser()->getBlock();
+
+        if ($terms !== null && $terms !== '') {
+            // New description; tight; term(s) sitting in pending block that we will replace
+            return BlockStart::of(...[new DescriptionListContinueParser()], ...self::splitTerms($terms), ...[new DescriptionContinueParser(true, $cursor->getPosition())])
+                ->at($cursor)
+                ->replaceActiveBlockParser();
+        }
+
+        if ($activeBlock instanceof Paragraph && $activeBlock->parent() instanceof Description) {
+            // Additional description in the same list as the parent description
+            return BlockStart::of(new DescriptionContinueParser(true, $cursor->getPosition()))->at($cursor);
+        }
+
+        if ($activeBlock->lastChild() instanceof Paragraph) {
+            // New description; loose; term(s) sitting in previous closed paragraph block
+            return BlockStart::of(new DescriptionContinueParser(false, $cursor->getPosition()))->at($cursor);
+        }
+
+        // No preceding terms
+        return BlockStart::none();
+    }
+
+    /**
+     * @return array<int, DescriptionTermContinueParser>
+     */
+    private static function splitTerms(string $terms): array
+    {
+        $ret = [];
+        foreach (\explode("\n", $terms) as $term) {
+            $ret[] = new DescriptionTermContinueParser($term);
+        }
+
+        return $ret;
+    }
+}

vendor/league/commonmark/src/Extension/DescriptionList/Parser/DescriptionTermContinueParser.php

@@ -0,0 +1,52 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\DescriptionList\Parser;
+
+use League\CommonMark\Extension\DescriptionList\Node\DescriptionTerm;
+use League\CommonMark\Parser\Block\AbstractBlockContinueParser;
+use League\CommonMark\Parser\Block\BlockContinue;
+use League\CommonMark\Parser\Block\BlockContinueParserInterface;
+use League\CommonMark\Parser\Block\BlockContinueParserWithInlinesInterface;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Parser\InlineParserEngineInterface;
+
+final class DescriptionTermContinueParser extends AbstractBlockContinueParser implements BlockContinueParserWithInlinesInterface
+{
+    private DescriptionTerm $block;
+
+    private string $term;
+
+    public function __construct(string $term)
+    {
+        $this->block = new DescriptionTerm();
+        $this->term  = $term;
+    }
+
+    public function getBlock(): DescriptionTerm
+    {
+        return $this->block;
+    }
+
+    public function tryContinue(Cursor $cursor, BlockContinueParserInterface $activeBlockParser): ?BlockContinue
+    {
+        return BlockContinue::finished();
+    }
+
+    public function parseInlines(InlineParserEngineInterface $inlineParser): void
+    {
+        if ($this->term !== '') {
+            $inlineParser->parse($this->term, $this->block);
+        }
+    }
+}

vendor/league/commonmark/src/Extension/DescriptionList/Renderer/DescriptionListRenderer.php

@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\DescriptionList\Renderer;
+
+use League\CommonMark\Extension\DescriptionList\Node\DescriptionList;
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+use League\CommonMark\Util\HtmlElement;
+
+final class DescriptionListRenderer implements NodeRendererInterface
+{
+    /**
+     * @param DescriptionList $node
+     *
+     * {@inheritDoc}
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer): HtmlElement
+    {
+        DescriptionList::assertInstanceOf($node);
+
+        $separator = $childRenderer->getBlockSeparator();
+
+        return new HtmlElement('dl', [], $separator . $childRenderer->renderNodes($node->children()) . $separator);
+    }
+}

vendor/league/commonmark/src/Extension/DescriptionList/Renderer/DescriptionRenderer.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\DescriptionList\Renderer;
+
+use League\CommonMark\Extension\DescriptionList\Node\Description;
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+use League\CommonMark\Util\HtmlElement;
+
+final class DescriptionRenderer implements NodeRendererInterface
+{
+    /**
+     * @param Description $node
+     *
+     * {@inheritDoc}
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer): \Stringable
+    {
+        Description::assertInstanceOf($node);
+
+        return new HtmlElement('dd', [], $childRenderer->renderNodes($node->children()));
+    }
+}

vendor/league/commonmark/src/Extension/DescriptionList/Renderer/DescriptionTermRenderer.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\DescriptionList\Renderer;
+
+use League\CommonMark\Extension\DescriptionList\Node\DescriptionTerm;
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+use League\CommonMark\Util\HtmlElement;
+
+final class DescriptionTermRenderer implements NodeRendererInterface
+{
+    /**
+     * @param DescriptionTerm $node
+     *
+     * {@inheritDoc}
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer): \Stringable
+    {
+        DescriptionTerm::assertInstanceOf($node);
+
+        return new HtmlElement('dt', [], $childRenderer->renderNodes($node->children()));
+    }
+}

vendor/league/commonmark/src/Extension/DisallowedRawHtml/DisallowedRawHtmlExtension.php

@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\DisallowedRawHtml;
+
+use League\CommonMark\Environment\EnvironmentBuilderInterface;
+use League\CommonMark\Extension\CommonMark\Node\Block\HtmlBlock;
+use League\CommonMark\Extension\CommonMark\Node\Inline\HtmlInline;
+use League\CommonMark\Extension\CommonMark\Renderer\Block\HtmlBlockRenderer;
+use League\CommonMark\Extension\CommonMark\Renderer\Inline\HtmlInlineRenderer;
+use League\CommonMark\Extension\ConfigurableExtensionInterface;
+use League\Config\ConfigurationBuilderInterface;
+use Nette\Schema\Expect;
+
+final class DisallowedRawHtmlExtension implements ConfigurableExtensionInterface
+{
+    private const DEFAULT_DISALLOWED_TAGS = [
+        'title',
+        'textarea',
+        'style',
+        'xmp',
+        'iframe',
+        'noembed',
+        'noframes',
+        'script',
+        'plaintext',
+    ];
+
+    public function configureSchema(ConfigurationBuilderInterface $builder): void
+    {
+        $builder->addSchema('disallowed_raw_html', Expect::structure([
+            'disallowed_tags' => Expect::listOf('string')->default(self::DEFAULT_DISALLOWED_TAGS)->mergeDefaults(false),
+        ]));
+    }
+
+    public function register(EnvironmentBuilderInterface $environment): void
+    {
+        $environment->addRenderer(HtmlBlock::class, new DisallowedRawHtmlRenderer(new HtmlBlockRenderer()), 50);
+        $environment->addRenderer(HtmlInline::class, new DisallowedRawHtmlRenderer(new HtmlInlineRenderer()), 50);
+    }
+}

vendor/league/commonmark/src/Extension/DisallowedRawHtml/DisallowedRawHtmlRenderer.php

@@ -0,0 +1,62 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\DisallowedRawHtml;
+
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+use League\Config\ConfigurationAwareInterface;
+use League\Config\ConfigurationInterface;
+
+final class DisallowedRawHtmlRenderer implements NodeRendererInterface, ConfigurationAwareInterface
+{
+    /** @psalm-readonly */
+    private NodeRendererInterface $innerRenderer;
+
+    /** @psalm-readonly-allow-private-mutation */
+    private ConfigurationInterface $config;
+
+    public function __construct(NodeRendererInterface $innerRenderer)
+    {
+        $this->innerRenderer = $innerRenderer;
+    }
+
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer): ?string
+    {
+        $rendered = (string) $this->innerRenderer->render($node, $childRenderer);
+
+        if ($rendered === '') {
+            return '';
+        }
+
+        $tags = (array) $this->config->get('disallowed_raw_html/disallowed_tags');
+        if (\count($tags) === 0) {
+            return $rendered;
+        }
+
+        $regex = \sprintf('/<(\/?(?:%s)[ \/>])/i', \implode('|', \array_map('preg_quote', $tags)));
+
+        // Match these types of tags: <title> </title> <title x="sdf"> <title/> <title />
+        return \preg_replace($regex, '&lt;$1', $rendered);
+    }
+
+    public function setConfiguration(ConfigurationInterface $configuration): void
+    {
+        $this->config = $configuration;
+
+        if ($this->innerRenderer instanceof ConfigurationAwareInterface) {
+            $this->innerRenderer->setConfiguration($configuration);
+        }
+    }
+}

vendor/league/commonmark/src/Extension/Embed/Bridge/OscaroteroEmbedAdapter.php

@@ -0,0 +1,49 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed\Bridge;
+
+use Embed\Embed as EmbedLib;
+use League\CommonMark\Extension\Embed\Embed;
+use League\CommonMark\Extension\Embed\EmbedAdapterInterface;
+
+final class OscaroteroEmbedAdapter implements EmbedAdapterInterface
+{
+    private EmbedLib $embedLib;
+
+    public function __construct(?EmbedLib $embed = null)
+    {
+        if ($embed === null) {
+            if (! \class_exists(EmbedLib::class)) {
+                throw new \RuntimeException('The embed/embed package is not installed. Please install it with Composer to use this adapter.');
+            }
+
+            $embed = new EmbedLib();
+        }
+
+        $this->embedLib = $embed;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function updateEmbeds(array $embeds): void
+    {
+        $extractors = $this->embedLib->getMulti(...\array_map(static fn (Embed $embed) => $embed->getUrl(), $embeds));
+        foreach ($extractors as $i => $extractor) {
+            if ($extractor->code !== null) {
+                $embeds[$i]->setEmbedCode($extractor->code->html);
+            }
+        }
+    }
+}

vendor/league/commonmark/src/Extension/Embed/DomainFilteringAdapter.php

@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+class DomainFilteringAdapter implements EmbedAdapterInterface
+{
+    private EmbedAdapterInterface $decorated;
+
+    private string $regex;
+
+    /**
+     * @param string[] $allowedDomains
+     */
+    public function __construct(EmbedAdapterInterface $decorated, array $allowedDomains)
+    {
+        $this->decorated = $decorated;
+        $this->regex     = self::createRegex($allowedDomains);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function updateEmbeds(array $embeds): void
+    {
+        $this->decorated->updateEmbeds(\array_values(\array_filter($embeds, function (Embed $embed): bool {
+            return \preg_match($this->regex, $embed->getUrl()) === 1;
+        })));
+    }
+
+    /**
+     * @param string[] $allowedDomains
+     */
+    private static function createRegex(array $allowedDomains): string
+    {
+        $allowedDomains = \array_map('preg_quote', $allowedDomains);
+
+        return '/^(?:https?:\/\/)?(?:[^.]+\.)*(' . \implode('|', $allowedDomains) . ')/';
+    }
+}

vendor/league/commonmark/src/Extension/Embed/Embed.php

@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+use League\CommonMark\Node\Block\AbstractBlock;
+
+final class Embed extends AbstractBlock
+{
+    private string $url;
+    private ?string $embedCode;
+
+    public function __construct(string $url, ?string $embedCode = null)
+    {
+        parent::__construct();
+
+        $this->url       = $url;
+        $this->embedCode = $embedCode;
+    }
+
+    public function getUrl(): string
+    {
+        return $this->url;
+    }
+
+    public function setUrl(string $url): void
+    {
+        $this->url = $url;
+    }
+
+    public function getEmbedCode(): ?string
+    {
+        return $this->embedCode;
+    }
+
+    public function setEmbedCode(?string $embedCode): void
+    {
+        $this->embedCode = $embedCode;
+    }
+}

vendor/league/commonmark/src/Extension/Embed/EmbedAdapterInterface.php

@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+/**
+ * Interface for a service which updates the embed code(s) for the given array of embeds
+ */
+interface EmbedAdapterInterface
+{
+    /**
+     * @param Embed[] $embeds
+     */
+    public function updateEmbeds(array $embeds): void;
+}

vendor/league/commonmark/src/Extension/Embed/EmbedExtension.php

@@ -0,0 +1,48 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+use League\CommonMark\Environment\EnvironmentBuilderInterface;
+use League\CommonMark\Event\DocumentParsedEvent;
+use League\CommonMark\Extension\ConfigurableExtensionInterface;
+use League\Config\ConfigurationBuilderInterface;
+use Nette\Schema\Expect;
+
+final class EmbedExtension implements ConfigurableExtensionInterface
+{
+    public function configureSchema(ConfigurationBuilderInterface $builder): void
+    {
+        $builder->addSchema('embed', Expect::structure([
+            'adapter' => Expect::type(EmbedAdapterInterface::class),
+            'allowed_domains' => Expect::arrayOf('string')->default([]),
+            'fallback' => Expect::anyOf('link', 'remove')->default('link'),
+        ]));
+    }
+
+    public function register(EnvironmentBuilderInterface $environment): void
+    {
+        $adapter = $environment->getConfiguration()->get('embed.adapter');
+        \assert($adapter instanceof EmbedAdapterInterface);
+
+        $allowedDomains = $environment->getConfiguration()->get('embed.allowed_domains');
+        if ($allowedDomains !== []) {
+            $adapter = new DomainFilteringAdapter($adapter, $allowedDomains);
+        }
+
+        $environment
+            ->addBlockStartParser(new EmbedStartParser(), 300)
+            ->addEventListener(DocumentParsedEvent::class, new EmbedProcessor($adapter, $environment->getConfiguration()->get('embed.fallback')), 1010)
+            ->addRenderer(Embed::class, new EmbedRenderer());
+    }
+}

vendor/league/commonmark/src/Extension/Embed/EmbedParser.php

@@ -0,0 +1,62 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+use League\CommonMark\Node\Block\AbstractBlock;
+use League\CommonMark\Parser\Block\BlockContinue;
+use League\CommonMark\Parser\Block\BlockContinueParserInterface;
+use League\CommonMark\Parser\Cursor;
+
+class EmbedParser implements BlockContinueParserInterface
+{
+    private Embed $embed;
+
+    public function __construct(string $url)
+    {
+        $this->embed = new Embed($url);
+    }
+
+    public function getBlock(): AbstractBlock
+    {
+        return $this->embed;
+    }
+
+    public function isContainer(): bool
+    {
+        return false;
+    }
+
+    public function canHaveLazyContinuationLines(): bool
+    {
+        return false;
+    }
+
+    public function canContain(AbstractBlock $childBlock): bool
+    {
+        return false;
+    }
+
+    public function tryContinue(Cursor $cursor, BlockContinueParserInterface $activeBlockParser): ?BlockContinue
+    {
+        return BlockContinue::none();
+    }
+
+    public function addLine(string $line): void
+    {
+    }
+
+    public function closeBlock(): void
+    {
+    }
+}

vendor/league/commonmark/src/Extension/Embed/EmbedProcessor.php

@@ -0,0 +1,70 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+use League\CommonMark\Event\DocumentParsedEvent;
+use League\CommonMark\Extension\CommonMark\Node\Inline\Link;
+use League\CommonMark\Node\Block\Paragraph;
+use League\CommonMark\Node\Inline\Text;
+use League\CommonMark\Node\NodeIterator;
+
+final class EmbedProcessor
+{
+    public const FALLBACK_REMOVE = 'remove';
+    public const FALLBACK_LINK   = 'link';
+
+    private EmbedAdapterInterface $adapter;
+    private string $fallback;
+
+    public function __construct(EmbedAdapterInterface $adapter, string $fallback = self::FALLBACK_REMOVE)
+    {
+        $this->adapter  = $adapter;
+        $this->fallback = $fallback;
+    }
+
+    public function __invoke(DocumentParsedEvent $event): void
+    {
+        $document = $event->getDocument();
+        $embeds   = [];
+        foreach (new NodeIterator($document) as $node) {
+            if (! ($node instanceof Embed)) {
+                continue;
+            }
+
+            if ($node->parent() !== $document) {
+                $replacement = new Paragraph();
+                $replacement->appendChild(new Text($node->getUrl()));
+                $node->replaceWith($replacement);
+            } else {
+                $embeds[] = $node;
+            }
+        }
+
+        $this->adapter->updateEmbeds($embeds);
+
+        foreach ($embeds as $embed) {
+            if ($embed->getEmbedCode() !== null) {
+                continue;
+            }
+
+            if ($this->fallback === self::FALLBACK_REMOVE) {
+                $embed->detach();
+            } elseif ($this->fallback === self::FALLBACK_LINK) {
+                $paragraph = new Paragraph();
+                $paragraph->appendChild(new Link($embed->getUrl(), $embed->getUrl()));
+                $embed->replaceWith($paragraph);
+            }
+        }
+    }
+}

vendor/league/commonmark/src/Extension/Embed/EmbedRenderer.php

@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+
+class EmbedRenderer implements NodeRendererInterface
+{
+    /**
+     * @param Embed $node
+     *
+     * {@inheritDoc}
+     *
+     * @psalm-suppress MoreSpecificImplementedParamType
+     */
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer)
+    {
+        Embed::assertInstanceOf($node);
+
+        return $node->getEmbedCode() ?? '';
+    }
+}

vendor/league/commonmark/src/Extension/Embed/EmbedStartParser.php

@@ -0,0 +1,53 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+use League\CommonMark\Parser\Block\BlockStart;
+use League\CommonMark\Parser\Block\BlockStartParserInterface;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Parser\MarkdownParserStateInterface;
+use League\CommonMark\Util\LinkParserHelper;
+
+class EmbedStartParser implements BlockStartParserInterface
+{
+    public function tryStart(Cursor $cursor, MarkdownParserStateInterface $parserState): ?BlockStart
+    {
+        if ($cursor->isIndented() || $parserState->getParagraphContent() !== null || ! ($parserState->getActiveBlockParser()->isContainer())) {
+            return BlockStart::none();
+        }
+
+        // 0-3 leading spaces are okay
+        $cursor->advanceToNextNonSpaceOrTab();
+
+        // The line must begin with "https://"
+        if (! str_starts_with($cursor->getRemainder(), 'https://')) {
+            return BlockStart::none();
+        }
+
+        // A valid link must be found next
+        if (($dest = LinkParserHelper::parseLinkDestination($cursor)) === null) {
+            return BlockStart::none();
+        }
+
+        // Skip any trailing whitespace
+        $cursor->advanceToNextNonSpaceOrTab();
+
+        // We must be at the end of the line; otherwise, this link was not by itself
+        if (! $cursor->isAtEnd()) {
+            return BlockStart::none();
+        }
+
+        return BlockStart::of(new EmbedParser($dest))->at($cursor);
+    }
+}

vendor/league/commonmark/src/Extension/ExtensionInterface.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
+ *  - (c) John MacFarlane
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension;
+
+use League\CommonMark\Environment\EnvironmentBuilderInterface;
+
+interface ExtensionInterface
+{
+    public function register(EnvironmentBuilderInterface $environment): void;
+}

vendor/league/commonmark/src/Extension/ExternalLink/ExternalLinkExtension.php

@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\ExternalLink;
+
+use League\CommonMark\Environment\EnvironmentBuilderInterface;
+use League\CommonMark\Event\DocumentParsedEvent;
+use League\CommonMark\Extension\ConfigurableExtensionInterface;
+use League\Config\ConfigurationBuilderInterface;
+use Nette\Schema\Expect;
+
+final class ExternalLinkExtension implements ConfigurableExtensionInterface
+{
+    public function configureSchema(ConfigurationBuilderInterface $builder): void
+    {
+        $applyOptions = [
+            ExternalLinkProcessor::APPLY_NONE,
+            ExternalLinkProcessor::APPLY_ALL,
+            ExternalLinkProcessor::APPLY_INTERNAL,
+            ExternalLinkProcessor::APPLY_EXTERNAL,
+        ];
+
+        $builder->addSchema('external_link', Expect::structure([
+            'internal_hosts' => Expect::type('string|string[]'),
+            'open_in_new_window' => Expect::bool(false),
+            'html_class' => Expect::string()->default(''),
+            'nofollow' => Expect::anyOf(...$applyOptions)->default(ExternalLinkProcessor::APPLY_NONE),
+            'noopener' => Expect::anyOf(...$applyOptions)->default(ExternalLinkProcessor::APPLY_EXTERNAL),
+            'noreferrer' => Expect::anyOf(...$applyOptions)->default(ExternalLinkProcessor::APPLY_EXTERNAL),
+        ]));
+    }
+
+    public function register(EnvironmentBuilderInterface $environment): void
+    {
+        $environment->addEventListener(DocumentParsedEvent::class, new ExternalLinkProcessor($environment->getConfiguration()), -50);
+    }
+}

vendor/league/commonmark/src/Extension/ExternalLink/ExternalLinkProcessor.php

@@ -0,0 +1,114 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\ExternalLink;
+
+use League\CommonMark\Event\DocumentParsedEvent;
+use League\CommonMark\Extension\CommonMark\Node\Inline\Link;
+use League\Config\ConfigurationInterface;
+
+final class ExternalLinkProcessor
+{
+    public const APPLY_NONE     = '';
+    public const APPLY_ALL      = 'all';
+    public const APPLY_EXTERNAL = 'external';
+    public const APPLY_INTERNAL = 'internal';
+
+    /** @psalm-readonly */
+    private ConfigurationInterface $config;
+
+    public function __construct(ConfigurationInterface $config)
+    {
+        $this->config = $config;
+    }
+
+    public function __invoke(DocumentParsedEvent $e): void
+    {
+        $internalHosts   = $this->config->get('external_link/internal_hosts');
+        $openInNewWindow = $this->config->get('external_link/open_in_new_window');
+        $classes         = $this->config->get('external_link/html_class');
+
+        foreach ($e->getDocument()->iterator() as $link) {
+            if (! ($link instanceof Link)) {
+                continue;
+            }
+
+            $host = \parse_url($link->getUrl(), PHP_URL_HOST);
+            if (! \is_string($host)) {
+                // Something is terribly wrong with this URL
+                continue;
+            }
+
+            if (self::hostMatches($host, $internalHosts)) {
+                $link->data->set('external', false);
+                $this->applyRelAttribute($link, false);
+                continue;
+            }
+
+            // Host does not match our list
+            $this->markLinkAsExternal($link, $openInNewWindow, $classes);
+        }
+    }
+
+    private function markLinkAsExternal(Link $link, bool $openInNewWindow, string $classes): void
+    {
+        $link->data->set('external', true);
+        $this->applyRelAttribute($link, true);
+
+        if ($openInNewWindow) {
+            $link->data->set('attributes/target', '_blank');
+        }
+
+        if ($classes !== '') {
+            $link->data->append('attributes/class', $classes);
+        }
+    }
+
+    private function applyRelAttribute(Link $link, bool $isExternal): void
+    {
+        $options = [
+            'nofollow'   => $this->config->get('external_link/nofollow'),
+            'noopener'   => $this->config->get('external_link/noopener'),
+            'noreferrer' => $this->config->get('external_link/noreferrer'),
+        ];
+
+        foreach ($options as $type => $option) {
+            switch (true) {
+                case $option === self::APPLY_ALL:
+                case $isExternal && $option === self::APPLY_EXTERNAL:
+                case ! $isExternal && $option === self::APPLY_INTERNAL:
+                    $link->data->append('attributes/rel', $type);
+            }
+        }
+    }
+
+    /**
+     * @internal This method is only public so we can easily test it. DO NOT USE THIS OUTSIDE OF THIS EXTENSION!
+     *
+     * @param mixed $compareTo
+     */
+    public static function hostMatches(string $host, $compareTo): bool
+    {
+        foreach ((array) $compareTo as $c) {
+            if (\strpos($c, '/') === 0) {
+                if (\preg_match($c, $host)) {
+                    return true;
+                }
+            } elseif ($c === $host) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+}

vendor/league/commonmark/src/Extension/Footnote/Event/AnonymousFootnotesListener.php

@@ -0,0 +1,62 @@
+<?php
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ * (c) Rezo Zero / Ambroise Maupate
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace League\CommonMark\Extension\Footnote\Event;
+
+use League\CommonMark\Event\DocumentParsedEvent;
+use League\CommonMark\Extension\Footnote\Node\Footnote;
+use League\CommonMark\Extension\Footnote\Node\FootnoteBackref;
+use League\CommonMark\Extension\Footnote\Node\FootnoteRef;
+use League\CommonMark\Node\Block\Paragraph;
+use League\CommonMark\Node\Inline\Text;
+use League\CommonMark\Reference\Reference;
+use League\Config\ConfigurationAwareInterface;
+use League\Config\ConfigurationInterface;
+
+final class AnonymousFootnotesListener implements ConfigurationAwareInterface
+{
+    private ConfigurationInterface $config;
+
+    public function onDocumentParsed(DocumentParsedEvent $event): void
+    {
+        $document = $event->getDocument();
+        foreach ($document->iterator() as $node) {
+            if (! $node instanceof FootnoteRef || ($text = $node->getContent()) === null) {
+                continue;
+            }
+
+            // Anonymous footnote needs to create a footnote from its content
+            $existingReference = $node->getReference();
+            $newReference      = new Reference(
+                $existingReference->getLabel(),
+                '#' . $this->config->get('footnote/ref_id_prefix') . $existingReference->getLabel(),
+                $existingReference->getTitle()
+            );
+
+            $paragraph = new Paragraph();
+            $paragraph->appendChild(new Text($text));
+            $paragraph->appendChild(new FootnoteBackref($newReference));
+
+            $footnote = new Footnote($newReference);
+            $footnote->appendChild($paragraph);
+
+            $document->appendChild($footnote);
+        }
+    }
+
+    public function setConfiguration(ConfigurationInterface $configuration): void
+    {
+        $this->config = $configuration;
+    }
+}

vendor/league/commonmark/src/Extension/Footnote/Event/FixOrphanedFootnotesAndRefsListener.php

@@ -0,0 +1,68 @@
+<?php
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace League\CommonMark\Extension\Footnote\Event;
+
+use League\CommonMark\Event\DocumentParsedEvent;
+use League\CommonMark\Extension\Footnote\Node\Footnote;
+use League\CommonMark\Extension\Footnote\Node\FootnoteRef;
+use League\CommonMark\Node\Block\Document;
+use League\CommonMark\Node\Inline\Text;
+
+final class FixOrphanedFootnotesAndRefsListener
+{
+    public function onDocumentParsed(DocumentParsedEvent $event): void
+    {
+        $document = $event->getDocument();
+        $map      = $this->buildMapOfKnownFootnotesAndRefs($document);
+
+        foreach ($map['_flat'] as $node) {
+            if ($node instanceof FootnoteRef && ! isset($map[Footnote::class][$node->getReference()->getLabel()])) {
+                // Found an orphaned FootnoteRef without a corresponding Footnote
+                // Restore the original footnote ref text
+                $node->replaceWith(new Text(\sprintf('[^%s]', $node->getReference()->getLabel())));
+            }
+
+            // phpcs:disable SlevomatCodingStandard.ControlStructures.EarlyExit.EarlyExitNotUsed
+            if ($node instanceof Footnote && ! isset($map[FootnoteRef::class][$node->getReference()->getLabel()])) {
+                // Found an orphaned Footnote without a corresponding FootnoteRef
+                // Remove the footnote
+                $node->detach();
+            }
+        }
+    }
+
+    /** @phpstan-ignore-next-line */
+    private function buildMapOfKnownFootnotesAndRefs(Document $document): array // @phpcs:ignore
+    {
+        $map = [
+            Footnote::class => [],
+            FootnoteRef::class => [],
+            '_flat' => [],
+        ];
+
+        foreach ($document->iterator() as $node) {
+            if ($node instanceof Footnote) {
+                $map[Footnote::class][$node->getReference()->getLabel()] = true;
+
+                $map['_flat'][] = $node;
+            } elseif ($node instanceof FootnoteRef) {
+                $map[FootnoteRef::class][$node->getReference()->getLabel()] = true;
+
+                $map['_flat'][] = $node;
+            }
+        }
+
+        return $map;
+    }
+}

vendor/league/commonmark/src/Extension/Footnote/Event/GatherFootnotesListener.php

@@ -0,0 +1,106 @@
+<?php
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ * (c) Rezo Zero / Ambroise Maupate
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace League\CommonMark\Extension\Footnote\Event;
+
+use League\CommonMark\Event\DocumentParsedEvent;
+use League\CommonMark\Extension\Footnote\Node\Footnote;
+use League\CommonMark\Extension\Footnote\Node\FootnoteBackref;
+use League\CommonMark\Extension\Footnote\Node\FootnoteContainer;
+use League\CommonMark\Node\Block\Document;
+use League\CommonMark\Node\NodeIterator;
+use League\CommonMark\Reference\Reference;
+use League\Config\ConfigurationAwareInterface;
+use League\Config\ConfigurationInterface;
+
+final class GatherFootnotesListener implements ConfigurationAwareInterface
+{
+    private ConfigurationInterface $config;
+
+    public function onDocumentParsed(DocumentParsedEvent $event): void
+    {
+        $document  = $event->getDocument();
+        $footnotes = [];
+
+        foreach ($document->iterator(NodeIterator::FLAG_BLOCKS_ONLY) as $node) {
+            if (! $node instanceof Footnote) {
+                continue;
+            }
+
+            // Look for existing reference with footnote label
+            $ref = $document->getReferenceMap()->get($node->getReference()->getLabel());
+            if ($ref !== null) {
+                // Use numeric title to get footnotes order
+                $footnotes[(int) $ref->getTitle()] = $node;
+            } else {
+                // Footnote call is missing, append footnote at the end
+                $footnotes[\PHP_INT_MAX] = $node;
+            }
+
+            $key = '#' . $this->config->get('footnote/footnote_id_prefix') . $node->getReference()->getDestination();
+            if ($document->data->has($key)) {
+                $this->createBackrefs($node, $document->data->get($key));
+            }
+        }
+
+        // Only add a footnote container if there are any
+        if (\count($footnotes) === 0) {
+            return;
+        }
+
+        $container = $this->getFootnotesContainer($document);
+
+        \ksort($footnotes);
+        foreach ($footnotes as $footnote) {
+            $container->appendChild($footnote);
+        }
+    }
+
+    private function getFootnotesContainer(Document $document): FootnoteContainer
+    {
+        $footnoteContainer = new FootnoteContainer();
+        $document->appendChild($footnoteContainer);
+
+        return $footnoteContainer;
+    }
+
+    /**
+     * Look for all footnote refs pointing to this footnote and create each footnote backrefs.
+     *
+     * @param Footnote    $node     The target footnote
+     * @param Reference[] $backrefs References to create backrefs for
+     */
+    private function createBackrefs(Footnote $node, array $backrefs): void
+    {
+        // Backrefs should be added to the child paragraph
+        $target = $node->lastChild();
+        if ($target === null) {
+            // This should never happen, but you never know
+            $target = $node;
+        }
+
+        foreach ($backrefs as $backref) {
+            $target->appendChild(new FootnoteBackref(new Reference(
+                $backref->getLabel(),
+                '#' . $this->config->get('footnote/ref_id_prefix') . $backref->getLabel(),
+                $backref->getTitle()
+            )));
+        }
+    }
+
+    public function setConfiguration(ConfigurationInterface $configuration): void
+    {
+        $this->config = $configuration;
+    }
+}

vendor/league/commonmark/src/Extension/Footnote/Event/NumberFootnotesListener.php

@@ -0,0 +1,75 @@
+<?php
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ * (c) Rezo Zero / Ambroise Maupate
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace League\CommonMark\Extension\Footnote\Event;
+
+use League\CommonMark\Event\DocumentParsedEvent;
+use League\CommonMark\Extension\Footnote\Node\FootnoteRef;
+use League\CommonMark\Reference\Reference;
+
+final class NumberFootnotesListener
+{
+    public function onDocumentParsed(DocumentParsedEvent $event): void
+    {
+        $document     = $event->getDocument();
+        $nextCounter  = 1;
+        $usedLabels   = [];
+        $usedCounters = [];
+
+        foreach ($document->iterator() as $node) {
+            if (! $node instanceof FootnoteRef) {
+                continue;
+            }
+
+            $existingReference   = $node->getReference();
+            $label               = $existingReference->getLabel();
+            $counter             = $nextCounter;
+            $canIncrementCounter = true;
+
+            if (\array_key_exists($label, $usedLabels)) {
+                /*
+                 * Reference is used again, we need to point
+                 * to the same footnote. But with a different ID
+                 */
+                $counter             = $usedCounters[$label];
+                $label              .= '__' . ++$usedLabels[$label];
+                $canIncrementCounter = false;
+            }
+
+            // rewrite reference title to use a numeric link
+            $newReference = new Reference(
+                $label,
+                $existingReference->getDestination(),
+                (string) $counter
+            );
+
+            // Override reference with numeric link
+            $node->setReference($newReference);
+            $document->getReferenceMap()->add($newReference);
+
+            /*
+             * Store created references in document for
+             * creating FootnoteBackrefs
+             */
+            $document->data->append($existingReference->getDestination(), $newReference);
+
+            $usedLabels[$label]   = 1;
+            $usedCounters[$label] = $nextCounter;
+
+            if ($canIncrementCounter) {
+                $nextCounter++;
+            }
+        }
+    }
+}