Pull Request resolves #47219

• I read the Generative AI policy (https://developer.joomla.org/generative-ai-policy.html) and my contribution is either not created with the help of AI or is compatible with the policy and GNU/GPL 2 or later.

Summary of Changes

In Joomla\CMS\Changelog\Changelog::loadFromXml(), the incoming changelog URL is now trimmed before it is used.

This fixes cases where changelogurl in an extension manifest is formatted with surrounding whitespace (for example, written on a new line with indentation), which could cause changelog loading to fail.

Example manifest formatting that is now handled correctly:

Testing Instructions

Use the commands below from the Joomla root. This does not require any extra script file.

PowerShell + Docker:

$p=(Get-Location).Path
$code = @'
define('_JEXEC', 1);
require 'includes/defines.php';
require 'includes/framework.php';

$container = Joomla\CMS\Factory::getContainer();
$container->alias('session', 'session.cli')
->alias('JSession', 'session.cli')
->alias(Joomla\CMS\Session\Session::class, 'session.cli')
->alias(Joomla\Session\Session::class, 'session.cli')
->alias(Joomla\Session\SessionInterface::class, 'session.cli');

Joomla\CMS\Factory::$application = $container->get(Joomla\Console\Application::class);

$url = 'https://raw.githubusercontent.com/joomla/joomla-cms/5.4-dev/installation/localise.xml';
$whitespaceUrl = PHP_EOL . ' ' . $url . PHP_EOL;

$c1 = new Joomla\CMS\Changelog\Changelog();
$c2 = new Joomla\CMS\Changelog\Changelog();

echo 'clean='; var_export($c1->loadFromXml($url)); echo PHP_EOL;
echo 'whitespace='; var_export($c2->loadFromXml($whitespaceUrl)); echo PHP_EOL;
'@
docker run --rm -v "${p}:/work" -w /work php:8.3-cli php -r "$code"

Run this once on a branch without this fix, then again with this PR branch.

Actual result BEFORE applying this Pull Request

• The clean URL loads successfully.
• The URL with leading/trailing whitespace fails and returns false.

Expected result AFTER applying this Pull Request

• Both the clean URL and the URL with surrounding whitespace load successfully.

Link to documentation

• Documentation link for guide.joomla.org:

• No documentation changes for guide.joomla.org needed

• Pull Request link for manual.joomla.org:

• No documentation changes for manual.joomla.org needed