[imp] bug attaching .xls with spaces

[Benoit St-André]

Hi everyone

Very weird behavior of imp HEAD.... I'm unable to send a message containing an 
attachement in .xls with a space in the name.

I've tried a lot of possibilities, other types of attachments, with spaces, 
without spaces, and it only happens with .xls type....

anybody has a clue ?
-- 
Benoit St-André
Conseiller pédagogique à la CS des Affluents
ben at benoitst-andre.net
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