', $html);
// Parse remaining markdown (outside cards)
$html = self::parse_basics($html);
return $html;
}
/**
* Parse basic markdown syntax
*
* @param string $text
* @return string
*/
private static function parse_basics($text) {
$html = $text;
// Protect variables from markdown parsing by temporarily replacing them
$variables = [];
$var_index = 0;
$html = preg_replace_callback('/\{([^}]+)\}/', function($matches) use (&$variables, &$var_index) {
$placeholder = '';
$variables[$placeholder] = $matches[0];
$var_index++;
return $placeholder;
}, $html);
// Headings (must be done in order from h4 to h1 to avoid conflicts)
$html = preg_replace('/^#### (.*)$/m', '$1
', $html);
$html = preg_replace('/^### (.*)$/m', '$1
', $html);
$html = preg_replace('/^## (.*)$/m', '$1
', $html);
$html = preg_replace('/^# (.*)$/m', '$1
', $html);
// Bold (don't match across newlines)
$html = preg_replace('/\*\*([^\n*]+?)\*\*/', '$1', $html);
$html = preg_replace('/__([^\n_]+?)__/', '$1', $html);
// Italic (don't match across newlines)
$html = preg_replace('/\*([^\n*]+?)\*/', '$1', $html);
$html = preg_replace('/_([^\n_]+?)_/', '$1', $html);
// Horizontal rules
$html = preg_replace('/^---$/m', '
', $html);
// Links (but not button syntax)
$html = preg_replace('/\[(?!button)([^\]]+)\]\(([^)]+)\)/', '$1', $html);
// Process lines for paragraphs and lists
$lines = explode("\n", $html);
$in_list = false;
$paragraph_content = '';
$processed_lines = [];
$close_paragraph = function() use (&$paragraph_content, &$processed_lines) {
if ($paragraph_content) {
$processed_lines[] = '' . $paragraph_content . '
';
$paragraph_content = '';
}
};
foreach ($lines as $line) {
$trimmed = trim($line);
// Empty line - close paragraph or list
if (empty($trimmed)) {
if ($in_list) {
$processed_lines[] = '';
$in_list = false;
}
$close_paragraph();
$processed_lines[] = '';
continue;
}
// Check if line is a list item
if (preg_match('/^[\*\-•✓✔]\s/', $trimmed)) {
$close_paragraph();
$content = preg_replace('/^[\*\-•✓✔]\s/', '', $trimmed);
if (!$in_list) {
$processed_lines[] = '';
$in_list = true;
}
$processed_lines[] = '- ' . $content . '
';
continue;
}
// Close list if we're in one
if ($in_list) {
$processed_lines[] = '
';
$in_list = false;
}
// Block-level HTML tags - don't wrap in paragraph
if (preg_match('/^<(div|h1|h2|h3|h4|h5|h6|p|ul|ol|li|hr|table|blockquote)/i', $trimmed)) {
$close_paragraph();
$processed_lines[] = $line;
continue;
}
// Regular text line - accumulate in paragraph
if ($paragraph_content) {
// Add line break before continuation (THIS IS THE KEY FIX!)
$paragraph_content .= '
' . $trimmed;
} else {
// Start new paragraph
$paragraph_content = $trimmed;
}
}
// Close any open tags
if ($in_list) {
$processed_lines[] = '';
}
$close_paragraph();
$html = implode("\n", $processed_lines);
// Restore variables
foreach ($variables as $placeholder => $original) {
$html = str_replace($placeholder, $original, $html);
}
return $html;
}
/**
* Convert newlines to
tags for email rendering
*
* @param string $html
* @return string
*/
public static function nl2br_email($html) {
// Don't convert newlines inside HTML tags
$html = preg_replace('/(?)\n(?!<)/', '
', $html);
return $html;
}
}