Somewhere amid the MIME-encoding in Martin Ramsch's post, he asked Philip
Guenther, who had suggested,
| > * ARG ?? ^^some-value^^
this question:
| Still being rather new to procmail I wonder why you don't use the more
| familiar "^" and "$" anchors:
|
| * ARG ?? ^some-value$
|
| Are there situations where the "^^" anchors do work better for one
| line matches?
When the search area contains more than one line, yes. ^ and $ might match
any newline in the search area. ^^ and ^^ anchor only at the very beginning
and the very end.