[gettext][mo-dynamic] Problem with multi-line strings

Hello,

I am using your localization optimization and I am currently translating a plugin.
But some parts of it weren’t translated as they should be in pop-ups in the back end. At first I blamed this plugin…
In fact, it turns out that the not translated strings are multi-line ones, and that they are not translated only when WPPP’s Use gettext or Use alternative MO reader option is enabled.
With those localization optimizations disabled, wordpress translation mechanism works with those multi-line strings.
A sample of such multi-line strings should:

sprintf(__( 'Here is a dynamic multi-line test string with replacement as="%s"
                   Could you find why it is not translated
                   by [gettext] nor [mo-dynamic]?
                   I sincerely hope. Thx!' , 'my-test-plugin-text-domain' ),
        $this) );

Of course, I delete WPPP’s localization cache dir after enabling each option before testing and reporting this, just to be sure everything was in sync.

Hope it helps.