Phil Pennock <exim-users@???> (Mo 13 Jul 2009 23:44:15 CEST):
> On 2009-07-13 at 22:54 +0200, Karl Fischer wrote:
> > I followed this thread with interest and I'm still a little puzzled with the
> > specific exim syntax, but in terms of regex and just extracting the header
> > names, this perl regex should be more efficient: s/:.*?\n(\s+.*?\n)*/:/g
> >
> > This saves looping through map/extract by getting rid of the unwanted 1st.
>
> Good point.
>
> However, you're also not stripping out space between the header name and
> the following colon, which is valid. This email could validly be
> constructed with:
> ----------------------------8< cut here >8------------------------------
> From: Phil ....
> To : Karl ...
> Cc : exim-users ....
> ----------------------------8< cut here >8------------------------------
OTOH, having the additional space in the output won't hurt, because ":"
is the list separator and exim strips the whitespace around the ":"
anyway, doesn't it?.
|From: hans
|To : peter
|Received: from me
| by you
| for him
|Subject: nix
'${lc:${sg {$message_headers_raw}{\N(?m)(^\S+\s*:)?.*?\n\N}{\$1}}}'
from:to :received:subject:message-id:date:
So I'd say, it's for our purpose ok. (Or the other alternatives,
just stripping away the part following the first ":".)
We're hunting the 100% solution just for fun ;)
Best regards from Dresden/Germany
Viele Grüße aus Dresden
Heiko Schlittermann
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