Date: 22 Aug 1995 10:42:07 +0200

  The idea behind the solution is that I need mhn to store the
  contents of the mail in the native iso8859-1 format somewhere. I did
  this by creating a custom editor that is invoked when I reply to a
  message. This editor extracts the body of the message (sorry, no
  multipart stuff), indents it with '> ', appends it to the draft
  message and invokes the ordinary editor on it. Here are the details:

  `isorepl' is a symbolic link from my $HOME/bin-directory to `repl'.

  In my .mh_profile I added the following two lines:

    isorepl: -form isoreplcomps -editor isoextract
    isoextract-next: vi

  The isoreplcomps file in my Mail-directory contains:

    %(lit)%(formataddr %<{reply-to}%?{from}%?{sender}%?{return-path}%>)\
    %<(nonnull)%(void(width))%(putaddr To: )\n%>\
    %(lit)%(formataddr{to})%(formataddr{cc})%(formataddr(me))\
    %<(nonnull)%(void(width))%(putaddr cc: )\n%>\
    %<{fcc}Fcc: %{fcc}\n%>\
    %<{subject}Subject: Re: %{subject}\n%>\
    %<{date}In-reply-to: Your message of "\
    %<(nodate{date})%{date}%|%(pretty{date})%>."%<{message-id}
		 %{message-id}%>\n%>\
    --------
    #<text/plain; charset=iso-8859-1
    %<{message-id}In message %{message-id} %>\
    %<{from}%(friendly{from}) writes%|You write%>:

  This is a "Usenet-like" quoting style. Modify to suit your own
  taste. This form will setup the proper header, as well as the first
  line of the new message (In <mmmmbbbb> nnnn writes etc.).

  The first editor, `isoextract', looks like this:

    #!/bin/sh
    #
    # Called from within repl where the "editalt" variable is valid
    #
    # Point to a special MHN configuration file (save old one)
    OLDMHN="$MHN"
    MHN=$HOME/`mhparam Path`/isoquotemsg
    export MHN

    # Extract message body to "native" format (should be iso-8859-1)
    # > More bla bla.
    mhn -file "$editalt" -store >> $1 2>/dev/null

    MHN="$OLDMHN"
    myname=`basename $0`
    next=`mhparam ${myname}-next`
    if [ "x$next" != "x" ]; then
	    exec $next "$@"
    fi

  `isoquotemsg' has just one rule; how mhn should store a text message.

    mhn-store-text: |sed -e 's/^[	]*$//' \
			 -e 's/^\([>|]\)\(.*\)$/>\1\2/' \
			 -e 's/^\([^>|].*\)$/> \1/'

  This tells mhn to pipe the message to stdout, where the sed commands
  will do the reformatting/quoting. (Note: the first pair of square
  brackets contains a space and a tab.)

  So, when I do a `isorepl' to a message, `repl' will create the draft
  message with the proper headers (based on the `isoreplcomps' format
  file), fire off its first editor, `isoextract', with the name of the
  draft file as its parameter. `isoextract' then invokes mhn in a
  suitable environment, tells it that it is to use the file $editalt
  as its source, and orders it to store the contents. The store-text
  rule in the custom MHN-file tells it to just pipe the message (in
  native iso8859-1 form) through a small set of sed commands, and
  `isoextract' uses the normal shell construct to append the result to
  the draft file. Then, if there's defined a `isoextract-next' entry
  in the .mh_profile, isoextract exec's this editor.

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