[TYPO3-dev] Overwriting default language in template

[Alain Gaymard]

Hello

I've got a website running in many languages. In each branch I've 
defined the language in templates (+ext). For instance

config.language = de

and

config.language = en

In an extension I need to display a english content on a german page or 
a german content on an english page using locallang.php and a template.

$this->pi_loadLL();
// [...] template loaded, TemplateParts initialised
$MarkerArray = array();
$SubpartsArray = array();
$MarkerArray['###HELLO###'] = $this->pi_getLL("hello","[ml]hello").';
$ouput = $this->cObj->substituteMarkerArrayCached(
	$this->TemplateParts['subscribemail'],
	$MarkerArray,
	$SubpartsArray, array());

Is there a way to temporary change the language used to generate the 
template output in the extension? I presume it is config.language that 
is used to decide which language to use in pi_getLL().

Thanks in advance
-- 
Alain