When the XML describing the mimetype is in a folder which contains a space, xdg-mime does not install it. Otherwise the file works fine.

I tried it in two different ways:

> xdg-mime install "/home/dev/my folder/my-mfe.xml"

and

> xdg-mime install /home/dev/my\ folder/my-mfe.xml

Note that using the same XML file just in a different location, the following worked:

> xdg-mime install /home/dev/myfolderwithoutaspace/my-mfe.xml

Just for completeness' sake, here is my XML:

<?xml version="1.0" encoding="UTF-8"?>
<mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info">
   <mime-type type="application/myfiletype.archive">
	   <comment>my type</comment>
	   <glob pattern="*.mfe"/>
   </mime-type>
</mime-info>