This document describes the new features added to the emm mail system
between releases 4.0 and 4.2.

1.  New Features in the build system

a.  The system may now be built with already-installed versions of the
    readline and history libraries.

b.  There is better support for checking for the presence of X and
    conditionally building those things that depend on it.

c.  Programs are now installed with the package version (e.g., 4.2) as a
    suffix and symlinks are used to link the program names to the most
    current version.  This allows different versions to co-exist.

2.  New Utilities

a.  mailfmt -- a program to pretty-print mail messages with line wrapping.

b.  binmail -- a shell script to mail out a binary file in MIME format, with
	       automatic encoding.

c.  multimail -- a shell script to take a set of files and sent them to a
		 recipient as a MIME multipart/mixed message.

d.  splitmail -- a shell script that splits a large file (which may already
		 be encoded), base-64 encodes it if necessary, and sends it
		 to a list of recpients as a series of MIME message/partial
		 messages.

e.  tarmail -- a shell script to take a set of filenames, create a tar
	       archive containing those files, and send them to a list of
	       recipients with `binmail'.

f.  mimetype -- a utility that takes a filename with extension and displays
		the appropriate MIME content-type, and vice versa.

3.  New Features in emm

a.  The printing features have been reworked to print MIME messages better.

b.  emm and its related utilities now have a `-v' option to display version
    information.

c.  The date routines have been made Y2K-safe.

d.  There is better completion when not at the emm command prompt -- for
    example, when in the MIME multipart message command parser.

e.  Better support for displaying unknown or unrecognized body parts using a
    default display function.

f.  Support for displaying multipart/pgp, multipart/signed, multipart/related,
    and multipart/report MIME messages.

g.  A text/xxx message with encoding (like quoted-printable) is now sent to
    the pager by default, since after decoding the line breaks are probably
    not appropriate for a terminal.

h.  The environment passed to external MIME display and printing programs is
    now reset for each message.

i.  A simple `address book' has been added.  It's a file with a list of
    addresses, one per line.  There is support for completion of recipient
    addresses from the address book, both from the emm command line as
    arguments to the `send', `reply', etc. commands and when prompted for
    a list of addresses.  The name of the address book is an emm variable.

j.  emm now sets the readline `application name' for conditionally defining
    keybindings in ~/.inputrc.

k.  The `active message' support is now integrated into the MIME support
    code rather than being a separate feature with a special header.

4.  New Features in sm

a.  A simple `address book' has been added, shared with emm.  The name of
    the address book is an sm variable, allowing for different address
    books if desired.  Recipient addresses may be completed from the address
    book.  There is a new variable which, if set, will automatically add
    recipient addresses to the address book.

b.  Better support for user-specified subtypes when attaching files with a
    new `application' attachment type.

c.  Users may now attach files of type `application/msword' and
    `text/enriched'.

d.  `Active' messages are now attachments with sm attachment type
    `command-input' and MIME type `application/x-sh-command'; the user may
    specify the command to be run by the recipient.

e.  The `remove' command, which removes addresses from headers, now uses
    readline word completion.

f.  A text message may be specified to be an `active' message by converting
    it into a MIME message with type `application/x-sh-command'.

g.  There is a new variable that causes messages to be sent as `text/enriched'
    by default, and a new invocation option (-E) to force it on a per-session
    basis.

h.  There is support for a general `Comments:' header if added while editing
    the message -- it will not be prefixed with `X-'.

i.  sm now sets the readline `application name' for conditionally defining
    keybindings in ~/.inputrc.

j.  If there are attachments, the signature is attached as a separate message
    part.

k.  The signature files attached for text/richtext and text/enriched messages
    are now `~/.signature.richtext' and `~/.signature.enriched' respectively.
    If they do not exist, `~/.signature' is attached as a `text/plain' part.

l.  There is support for a `mime.types' file matching filename extensions
    with MIME types, and files of any type may now be attached (not just
    those for which sm has builtin support).

5.  New Features in se/xse

a.  There is support for composing text/enriched messages.

6.  New Features in MIME support

a.  html2ps -- a program to translate HTML to Postscript for printing

b.  unbinhex -- the start of a program to decode MIME messages in binhex
		format

c.  mprintmime -- a shell script that does the appropriate thing when printing
		  MIME messages.

d.  All of the shell script utilities are now created by the configure
    script, so they have the correct paths depending on where emm is installed.

e.  Support for displaying and printing the new MIME `text/enriched' format
    has been added, with translators from text/enriched to HTML and text.

f.  There is a new display program for text/richtext and text/enriched
    messages that doesn't rely on groff, with translators from text/richtext
    to HTML and text.

g.  There is a new HTML display program written in TCL for text/html
    messages.

h.  The program to encode and decode message bodies in various formats has
    acquired uuencode and the old `atob' converters.

i.  Changes to the default mailcap file to add the new display programs.

j.  There is a new program to print HTML by converting it to Postscript and
    sending it to the `ps' printer (by default).

h.  There is a new display program for video/mpeg.

7.  New Features in the utility programs

a.  All of the utility programs, where appropriate, now take a `-v' option
    to display version information.

b.  The `dp' date parser now takes a -t argument to specify the number of
    seconds since the epoch to convert to the various formats, a `-h'
    argument to disable the header prefixing the date strings (for use in
    scripts), and `-a', `g', `-l', and `-s' options to restrict output to
    RFC822 date strings, Greenwich Mean time, local time, and seconds since
    the epoch, respectively.

c.  The `m2ps' message-to-postscript printing command is now created by
    the configure script, so the installation paths are right, and has a new
    `-o' option to print to a file.

d.  `sysmon' now accepts a `q' keystroke in the clock widget and exits, takes
    a `-title' option to set the window title, takes a `-version' option to
    display version information, and is Y2K-safe (after a bug fix to the
    `Dclock' widget).

8.  New Features in the support libraries

a.  The version of the included readline library is now 4.1.

b.  An improved version of malloc (from bash) has been added.

8.  Some notable bug fixes

a.  Care was taken to avoid SIGPIPE problems in emm and utilities.

b.  Better care was taken to quote arguments passed to external utilities,
    like `msavebody' when saving multipart message parts.

c.  The MIME body parsing functions are more robust in the face of
    incorrectly-formatted MIME messages.

d.  The utilties now catch write errors to stdout better (caused by, for
    example, out-of-disk-space errors) and report them.

9.  The following utilities have been deprecated, and are no longer built
    by default:

	address burst forward just rcvtty

10. The following utilities have been removed or replaced:

	richtogroff atob btoa tarmail untarmail btoamail unbtoamail

11. Portability has been improved somewhat.  I have built the emm-4.2 release
    on the following Unix versions:

	FreeBSD 3.x
	Red Hat Linux 6.0, 6.1
	Solaris 2.5.1
	Solaris 2.6
	Solaris 7
	BSD/OS 3.1
	BSD/OS 4.0.1
	AIX 4.2