Avoiding your main question, since David has answered that far better
than I could...
(this is the sed from the top of this doc, minus the first invocation):
| sed -e '/^$/N \
/^\n$/{N \
/^\n\n$/D \
}'
The procmail log reports:
sed: -e expression #1, char 6: Extra characters after command
...
Is there some trick to using procedural sed commands such as these from
procmail, or is my sed (gnu, 3.02) being argumentative where a possibly
newer one might not?
You can write that without newlines (valid in GNU sed 3.02) as
| sed -e '/^$/N; /^\n$/{N; /^\n\n$/D; }'
and avoid the problem that way.
Martin
--
Martin McCarthy /</ PGP key available
`Procmail Companion' \>\ http://www.ancient-scotland.co.uk
Addison Wesley /</ http://www.ehabitat.demon.co.uk
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