Autocomplete fails to complete filenames with spaces

[Caralluin]

When I try the autocomplete feature in bash with file names that contain spaces, the completion fails, because the parts of the name are treated separately.

So if I have a file named file with spaces.txt and type fi, then nothing happens on first TAB (despite no other file matches fi), and on the second TAB I get the list: file spaces.txt with as possible completions, which is the correctly found filename, but the parts sorted alphabetically.

It looks for me like the result of some missing quotes or something like that, but I know very few of bash autocompletion, so I don't know how to fix it.