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References: <3007331580715961.WA.kellysmith12.21gmail.com@listserv.uni-heidelberg.de>
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Subject: Re: Discussion: Specialized Syntax
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Hi,

> - Defining an environment that sets up active characters to emulate
>   traditional BNF syntax is very concise, but comes at the cost of
>   delimited arguments and catcode madness.

You could as well use a letter-by-letter parser that doesn't need altered
category codes. Take a look at the pgf module `parser`. That's not `expl3`
but could give you an idea on what's possible.

Best,
Jonathan

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Software zur Erkennung von "Spam" auf dem Rechner

    h2774747.stratoserver.net

hat die eingegangene E-mail als m=F6gliche "Spam"-Nachricht identifiziert.
Die urspr=FCngliche Nachricht wurde an diesen Bericht angeh=E4ngt, so dass
Sie sie anschauen k=F6nnen (falls es doch eine legitime E-Mail ist) oder
=E4hnliche unerw=FCnschte Nachrichten in Zukunft markieren k=F6nnen.
Bei Fragen zu diesem Vorgang wenden Sie sich bitte an

    @@CONTACT_ADDRESS@@

Vorschau: Hi, > - Defining an environment that sets up active characters
   to emulate > traditional BNF syntax is very concise, but comes at the co=
st
   of > delimited arguments and catcode madness. You could as well use a le=
tter-by-letter
   parser that doesn't need altered category codes. Take a look at the pgf =
module
   `parser`. That's not `expl3` but could give you an idea on what's possib=
le.
=20=20=20

Inhaltsanalyse im Detail:   (6.1 Punkte, 5.0 ben=F6tigt)

Pkte Regelname              Beschreibung
---- ---------------------- -----------------------------------------------=
---
 2.8 FROM_STARTS_WITH_NUMS  Absenderadresse beginnt mit Ziffern im
                            Benutzernamen
 0.0 HEADER_FROM_DIFFERENT_DOMAINS From and EnvelopeFrom 2nd level
                            mail domains are different
 0.0 FREEMAIL_FROM          Sender email is commonly abused enduser mail
                            provider (rainer.schoepf[at]web.de)
                            (dzajw[at]yandex.com)
                            (rainer.schoepf[at]web.de)
                            (petstep[at]web.de)
                            (rainer.schoepf[at]web.de)
                            (petstep[at]web.de) (eaxtljsax[at]aol.com)
                             (yanglatex2e[at]gmail.com)
                            (rainer.schoepf[at]gmx.net)
                            (rainer.schoepf[at]gmx.net)
                            (rainer.schoepf[at]gmx.net)
                            (rainer.schoepf[at]web.de)
                            (rainer.schoepf[at]gmx.net)
                            (rainer.schoepf[at]gmx.net)
                            (ziegenhagen[at]gmail.com)
                            (rainer.schoepf[at]web.de)
                            (klaus.hoeppner[at]gmx.de)
                            (weyhofen1[at]gmx.de)
                            (ziegenhagen[at]gmail.com)
                            (ziegenhagen[at]gmail.com)
                            (ziegenhagen[at]gmail.com)
                            (ziegenhagen[at]gmail.com)
                            (keineantwortadresse[at]web.de)
                            (rainer.schoepf[at]gmx.net)
                            (rainer.schoepf[at]gmx.net)
                            (ellen.stark[at]web.de)
                            (ellen.stark[at]web.de)
                            (petstep[at]web.de)
                            (rainer.schoepf[at]web.de)
                            (rainer.schoepf[at]gmx.net)
                            (rainer.schoepf[at]web.de)
                            (rainer.schoepf[at]gmx.net)
                            (rainer.schoepf[at]gmx.net)
                            (agentexport5[at]gmail.com)
                            (petstep[at]web.de) (petstep[at]web.de)
                            (rainer.schoepf[at]gmx.net)
                            (petstep[at]web.de)
                            (rainer.schoepf[at]web.de)
                            (rainer.schoepf[at]web.de)
                            (rainer.schoepf[at]web.de)
                            (yanglatex2e[at]gmail.com)
                            (rainer.schoepf[at]gmx.net)
                            (rainer.schoepf[at]gmx.net)
                            (rainer.schoepf[at]gmx.net)
                            (rainer.schoepf[at]web.de)
                            (rainer.schoepf[at]gmx.net)
                            (phe.h.o1[at]gmail.com)
                            (rainer.schoepf[at]gmx.net)
                            (rainer.schoepf[at]gmx.net)
                            (rainer.schoepf[at]gmx.net)
                            (rainer.schoepf[at]web.de)
                            (rainer.schoepf[at]gmx.net)
                            (rainer.schoepf[at]gmx.net)
                            (rainer.schoepf[at]gmx.net)
                            (rainer.schoepf[at]gmx.net)
 3.1 NO_RDNS_DOTCOM_HELO    HELO-Identifikation als gro=DFer Provider,
                            aber rDNS-Name inkorrekt
 0.1 FREEMAIL_FORGED_FROMDOMAIN 2nd level domains in From and
                            EnvelopeFrom freemail headers are
                            different


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