SoloCDM asked,
| Is there anything that allows skipping backwards a few lines when
| processing a message (sed, procmail, ...)?
Skipping backwards in what?
In the procmail rcfile to retry some recipes? Currently, the only way is a
recursive INCLUDERC.
In a set of sed instructions? Sed's b, t, and D commands can do that.
Skipping a few lines back up the message while processing it with sed?
Impossible, but you can save a few lines in the hold space (or accumulate
them in the pattern space with N commands) and then work on the whole group.
You'll need to be a lot more specific.
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