Thank you, sir, particularly for the improved version of my bash
command.  I do use procmail for certain things, but had not considered
this particular use.  And I agree that the program antiword is
extremely useful for converting Word files to ASCII (as are wvPDF and
abiword for conversion to PDF and other types).

Yet I would still like to know if it is possible to write a .muttrc
macro that invokes a bash command or script to produce the default
"save to" filename.  I've tried a great many things like

macro attach S "<save-entry><bol>$HOME/Mail/Attachments/$(%f | tr 'A-
Z' 'a-z' | sed "s/'//g" | sed "s/ /_/g")"

which do not produce the desired result.  (I often use mutt over an
ssh connection and then view and sometimes edit attachments on the
remote machine by saving them from mutt and using scp.  Thus it is
slightly inconvenient to have attachment filenames with spaces.  Your
antiword suggestion might solve at least the immediate problem.)

Kind regards,
--maneesh