Unable to assemble multi-module projects with more than 1 level depth folder structure

I'm using maven-assembly-plugin with multi-modules projects, and it works fine for "flat" hierachy.
I mean for multi-modules projects as :

Parent
+- Submodule1
+- Submodule2

But for this kind of layout :

Parent:pom
+- Submodule1:jar
+- SubParent:pom
+- Subsubmodule1:jar
+- Subsubmodule2:jar

I am not able to build an assembly with all referenced modules in reactor (Submodule1, Subsubmodule1 and Subsubmodule2).

AbstractAssemblyMojo#getModulesFromReactor(...) is responsible for filtering project in the reactor, but :

• it doesn't not recurse into reactor's projects (explicite call to getModulesFromReactor( parent, false ) : false = doesn't recurse)

• AbstractAssemblyMojo#isProjectModule(....) has a bug : it doesn't not return anything when recurse is true !! (line 716 is rev. 407515)