Entering filenames with spaces

[David Reitter]

On June 25, I suggested to map the space bar to the space character  
in the minibuffer (instead of minibuffer-complete-word). IIRC, people  
seemed to agree and some said that they wouldn't use minibuffer- 
complete-word anyways - especially for filenames it seems to be clear  
that minibuffer-complete-word makes no sense.
Inputting a space in a file name, however, is a pretty common thing  
to do nowadays.

It seems like the suggestion has been forgotten. It'd be good if  
somebody took out this define-key or did whatever is needed!