Decode HTML entities in URLs from src attributes (#558)

Fixes #559.

- Decode HTML entities in URLs extracted from HTML src attributes.

includes/apple-exporter/class-exporter-content.php

@@ -89,6 +89,9 @@ public static function format_src_url( $url ) {
 			$url = site_url( $url );
 		}
 
+		// Decode the HTML entities since the URL is from the src attribute.
+		$url = html_entity_decode( $url );
+
 		// Escape the URL and ensure it is valid.
 		$url = esc_url_raw( $url );
 		if ( empty( $url ) ) {

tests/apple-exporter/test-class-exporter-content.php

@@ -32,5 +32,14 @@ public function testCompleteContent() {
 		$this->assertEquals( 'someurl.com', $content->cover() );
 	}
 
-}
+	/**
+	 * Ensure we decode the HTML entities in URLs extracted from HTML attributes.[type]
+	 */
+	public function test_format_src_url() {
+		$this->assertEquals(
+			'https://example.com/some.mp3?one=two&query=arg',
+			\Apple_Exporter\Exporter_Content::format_src_url( 'https://example.com/some.mp3?one=two&query=arg' )
+		);
+	}
 
+}