Robert Brown, after getting a "bad substitution" error from this,
| :0hw
| NEWHEAD=|formail -a Message-ID: -a "Folder: "${RESENDMAIL_O#$HOME/}
surmised,
| I think procmail is trying to substitute the environment variable _before_
| the shell is executed.
No, procmail is trying to substitute the variable and execute the entire
command _without_ invoking a shell, because the command has no characters
from $SHELLMETAS (unless you've changed the content of $SHELLMETAS).
To force a shell in cases like these, the usual trick is to append a
semicolon:
formail -a Message-ID: -a "Folder: "${RESENDMAIL_O#$HOME/} ;
Then there's the question of why you're putting the variable outside the soft
quotes rather than inside them.
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