chore: add readme

README.md

@@ -0,0 +1,14 @@
+# fanwikis/Description2
+
+This is a fork of the MediaWiki Description2 extension maintained by the fanwikis.org Team with tweaks and improvements for use on fanwikis.org's MediaWiki installation.
+
+## Changes
+
+### Removing <style> tags
+
+When using the TemplateStyles extension at the top of an article, the Description may end up being just CSS. This is not what we want, so we remove the <style> tags from the description.
+
+```diff
+- $pattern = '%<table\b[^>]*+>(?:(?R)|[^<]*+(?:(?!</?table\b)<[^<]*+)*+)*+</table>%i';
++ $pattern = '%<(table|style)\b[^>]*+>(?:(?R)|[^<]*+(?:(?!</?(table|style)\b)<[^<]*+)*+)*+</(table|style)>%i';
+```

includes/SimpleDescriptionProvider.php

@@ -8,7 +8,7 @@ class SimpleDescriptionProvider implements DescriptionProvider {
 	 * Extracts description from the HTML representation of a page.
 	 *
 	 * The algorithm:
-	 * 1. Removes all <table> elements and their contents.
+	 * 1. Removes all <table> and <style> elements and their contents.
 	 * 2. Selects all <p> elements.
 	 * 3. Iterates over those paragraphs, strips out all HTML tags and trims white-space around.
 	 * 4. Then the first non-empty paragraph is picked as the result.
@@ -17,7 +17,7 @@ class SimpleDescriptionProvider implements DescriptionProvider {
 	 * @return string
 	 */
 	public function derive( string $text ): ?string {
-		$pattern = '%<table\b[^>]*+>(?:(?R)|[^<]*+(?:(?!</?table\b)<[^<]*+)*+)*+</table>%i';
+		$pattern = '%<(table|style)\b[^>]*+>(?:(?R)|[^<]*+(?:(?!</?(table|style)\b)<[^<]*+)*+)*+</(table|style)>%i';
 		$myText = preg_replace( $pattern, '', $text );
 
 		$paragraphs = [];