According to Shared MIME-info Database:
These files have a mime-type element as the root node. The format is as described above. They are created by merging all the mime-type elements from the source files and creating one output file per MIME type. Each file may contain information from multiple source files. The magic, glob and root-XML elements will have been removed.
What if two files contain conflicting information for the same MIME type? Specifically, is it guaranteed that the information from
freedesktop.org.xml is not overwritten by other XML files?