BlogPostList macro cannot display the list of all blog posts of a wiki if a global blog does not exist

Currently, the blog application comes with a "default" blog in Blog.WebHome and allows to create other blogs using the Blog.Management page.

The default blog in Blog.WebHome is configured as a global blog (without restriction of posts placement). When posts are displayed in the listing of this global blog, their source blog is displayed in the post information.

However, as soon as this global blog is restricted (for example, to the Blog space) or deleted, there is no possibility to use the BlogPostList macro (BLOG-9) or other easy macro to list all the articles on the wiki, because the BlogPostList macro expects a blog document as a parameter, and that Blog should be a global blog.

Depending on the need, a global blog may not always be created (creating a global blog would allow to add posts in this global blog - as per the standard display of the blog - and would figure this global blog in blog listings in the blog panels).