Thanks, Nathan. I can confirm that. Not redirecting standard input to a file
but putting path/to/spoolfile as last argumnent works, as indicated in
the other message I sent to the list. I checked it on the command line.

On Sun, Apr 14, 2019 at 05:38:31PM -0400, Nathan Stratton Treadway wrote:
> On Sun, Apr 14, 2019 at 20:06:04 +0200, felixs wrote:
> > sed -ne '/^From: $EMAIL_ADDRESS/p ; /Subject: $SUBJECT/p' \
> > < /path/to/spoolfile
> > 
> > If I specify a message file on the command line it works. If I try to
> > make sed take its input from ALL the files in the directory using the
> > above syntax it does not. I use, for instance,
> 
> If you don't enter any file names on the sed command line it reads from
> stdin (and thus works with your "< /path/to/spoolfile" redirect).
> 
> However, sed can instead accept a list of files on the command line and
> it will then read from each in turn, so instead of having the shell
> redirect stdin, just put the wildcard path as the trailing argument on
> the command line and let the shell expand the wildcard into the list of
> individual files:
>   sed -ne '/^From: $EMAIL_ADDRESS/p ; /Subject: $SUBJECT/p' 
> path/to/spoolfile/*
> 
> (The applicable paragraph from the [GNU] sed man page is:
>        If no -e, --expression, -f, or --file option is given, then  the first
>        non-option  argument  is  taken  as  the  sed script to interpret.  All
>        remaining arguments are names of input files; if  no  input files  are
>        specified, then the standard input is read.
> )
> 
>                       Nathan

Well, I used the -e option and the first non-option argument is taken as
the sed script (on my command line: the regexp), isn't it?. And standard input
(redirected to an input path/to/spoolfile/* ) is not read as it (maybe) should.
Are there any more list members that can confirm that redirecting it in
the way I did, does not work/generates an error message?

Cheers,
felixs

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