Re: stripping all X- Headers

> > I want to remove all X headers from the email.
> > The obvious solution, using formail, does not work
> >
> > :0 fhw
> > | formail -I X-*:
> Hi,
>
> How about:
>
> :0 fhw
> | grep -v ^X-  |  (pipe into whatever you want)
This will not do what you want since the X- header might occupy
more than one line.  Procmail combines all the lines into one for
pattern-matching purposes, but does not feed them to filters that way.

You could do this using most any of the *awk programs (maybe not the
old, original "vanilla" awk) but it is a bit awkward (sorry :)

:0 fhw
| gawk 'NF==0           {print;next} \
        /^[     ]/ && !s {print;next} \
        /^[     ]/      {next} \
        /^[Xx]-/        {s=1;next} \
                        {s=0;print}'

For the curious, that works thusly, line-by-line:
        if the line is blank, print it
        else if the line starts with whitespace and s is zero, print it
        else if the line starts with whitespace, skip it
        else if the line starts with "X-" or "x-" then set s to 1, and skip it
        else set s to 0, and print it
(s is initially zero; I use it to represent a "skipping this line" state)

But, since (as Philip pointed out) formail does the job nicely, it's
much more straightforward to use formail.

Cheers,
Stan