Hi Dvalin,

this usecase illustrate what I said in misc@openbsd about the appliance
of vi to the vim culture because most of the solution is outside vim to
me.

A shell script will be much easier to maintain and extend as well as
resusable (from a makefile or a shell script).

        wanabe is somewhere in $PATH and its content is

        #!/bin/sh -eu
        sed -E '/^W\($/,/^\)$/!d' "$1" |
                sed '1d;$d' |
                ${SHELL:-} -s -- "$@"

so now I can write a roff file with

        .ig

        the W() script is hte way to get a document from the current file

        W(
                d="$1"; shift
                dformat "$d" |
                eqn          |
                pic          |
                soelim       |
                groff -Tpdf -Kutf-8 "$@"
        )
        ..

and from vim

        let &mp='wanabe % > /tmp/vbe.pdf'

regards

-- 
Marc Chantreux

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