xdg-open dose not search correctly in directories with spaces in the name

The problem is in search_desktop_file() function more precisely at https://gitlab.freedesktop.org/xdg/xdg-utils/blob/master/scripts/xdg-open.in#L331

as an example to reproduce the issue try the snippet below:

reproducer() 
{ 
local dir="$1" 
for d in "$dir"/*/; do     
    echo "$d" 
done 
}

reproducer /home/valdar/.local/share/applications/Space\ Name/

you will see that the output is:

/home/valdar/.local/share/applications/Space 
Name//*/

instead of:

/home/valdar/.local/share/applications/Space Name//*/

This is not only harmful because some directories are not searched, but also because it can lead to infinite loops and escape the search to directories outside the paths configured in XDG_DATA_DIRS. As an example think about running xdg-open from a directory with this structure:

games
|_my games

and one of the directories in your XDG_DATA_DIRS contains a directory named not games. You end up in an infinite loop.