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+Changes to
+The RAND MH Message Handling System:
+UCI version MH 6.8
+John L. Romine
+Computing Support Group
+Department of Information and Computer Science
+University of California, Irvine
+Irvine, CA  92717-3425
+Bug-MH@ICS.UCI.EDU
+_A_B_S_T_R_A_C_T
+This document describes the changes to the
+UCI version of the RAND MH system from MH 6.6 to
+this release of MH 6.8.  This document is meant to
+supplement, not supersede, the standard MH User's
+manual and MH Administrator's manual.
+Comments concerning this documentation should
+be addressed to the mailbox Bug-MH@ICS.UCI.EDU, or
+ucbvax!ucivax!bug-mh.
+_A_C_K_N_O_W_L_E_D_G_E_M_E_N_T_S
+The _M_H system described herein is based on the original RAND
+_M_H system.  It has been extensively developed (perhaps too
+much so) by Marshall T. Rose and John L. Romine at the
+University of California, Irvine.  Einar A. Stefferud, Jerry
+N. Sweet, and Terry P. Domae provided numerous suggestions
+to improve the UCI version of _M_H.
+Of course, a large number of people have helped _M_H
+along.  The list of "_M_H immortals" is too long to list here.
+For this release, numerous _M_H-_W_o_r_k_e_r_s sent in fixes and
+other changes.  A handful of courageous _M_H-_W_o_r_k_e_r_s volun-
+teered to beta-test these changes; their help is particu-
+larly appreciated.
+December 1, 1993
+Changes to MH 6.8                                          2
+_D_I_S_C_L_A_I_M_E_R
+The Regents of the University of California wish to make  it
+known that:
+Although each program has been tested by its  con-
+tributor, no warranty, express or implied, is made
+by the contributor or the University  of  Califor-
+nia,  as  to  the  accuracy and functioning of the
+program and related program  material,  nor  shall
+the  fact of distribution constitute any such war-
+ranty, and no responsibility  is  assumed  by  the
+contributor  or  the  University  of California in
+connection herewith.
+_C_O_N_V_E_N_T_I_O_N_S
+In this document, certain formatting conventions are adhered
+to:
+The names of UNIX commands, such as _c_o_m_p are  presented
+in _i_t_a_l_i_c_s.
+Arguments to programs, such as `msgs' and `-nobell' are
+delimited by single-quotes.
+Text that should be typed exactly as-is, such  as  com-
+mand  lines  (e.g.,  "folder  -pack"), are delimited by
+double-quotes.
+UNIX pathnames and envariables, such  as  /usr/uci  and
+$SIGNATURE, are presented in bold font.
+December 1, 1993
+Changes for MH 6.8.3                                       3
+_C_H_A_N_G_E_S _F_O_R _M_H _6._8._3
+The MH 6.8.3 maintenance release contains few user-visible
+changes.  Most of the changes are internal to the multi-
+media display program _m_h_n to support RFC 1521 (the new MIME
+standard).  This is the current version of MH as of December
+1, 1993.
+_R_u_n_t_i_m_e _T_a_i_l_o_r_i_n_g
+When posting mail using the SMTP, _p_o_s_t does not normally
+send the HELO command. This is because _S_e_n_d_M_a_i_l would fail
+if the host name given in the HELO command was the local
+host.  Later versions of _S_e_n_d_M_a_i_l will now complain if you
+omit the HELO command.
+If you specify a hostname with the clientname: option
+in the _m_t_s_t_a_i_l_o_r file, _p_o_s_t will give the HELO command with
+that name, otherwise no HELO command is given.  See _m_h-
+_t_a_i_l_o_r(5) for more details.
+_U_s_e_r _I_n_t_e_r_f_a_c_e _P_r_o_g_r_a_m_s
+folder  The _f_o_l_d_e_r command now has `-create' and `-nocreate'
+options.  See _f_o_l_d_e_r(1) for details.
+inc     A bug where `-host' would not override the pophost
+as set in the _m_t_s_t_a_i_l_o_r file has been fixed.  This
+bug was also fixed in _m_s_g_c_h_k.
+mhn     The _m_h_n command has several changes: updates for
+conformance with RFC 1521, addition of two caches:
+public and private, addition of two caching poli-
+cies: one for reading and one for writing, support
+for storing multipart entities, and a few bug fixes.
+See _m_h_n(1) for complete details.
+_C_H_A_N_G_E_S _F_O_R _M_H _6._8._2
+The MH.6.8.2 patch release contains only internal changes to
+support the BSD 4.4 and 386BSD versions of UNIX.  This ver-
+sion of _M_H was released August 25, 1993, but was not widely
+distributed.
+_C_H_A_N_G_E_S _F_O_R _M_H _6._8._1
+The MH.6.8.1 patch release is a maintenance release.  This
+is the current released version of _M_H as of August 20, 1993.
+This release includes a small number of bug fixes, a
+few minor enhancements, some changes for the new MIME stan-
+dard, and support for ESMTP (RFC 1425).  Support for BSD 4.4
+and 386BSD is planned for the next release.
+December 1, 1993
+Changes for MH 6.8.3                                       4
+Many other fixes which have already been received are
+still being merged.  If you've sent an update for MH 6.8 to
+Bug-MH@ics.uci.edu and it isn't in this release, it'll prob-
+ably appear in the next release.
+_F_i_x_e_s _a_n_d _E_n_h_a_n_c_e_m_e_n_t_s
+Many minor documentation corrections were made.  There are
+also a few program changes:
+mhn   The `-cache policy', `-[no]check', and `-[no]pause'
+switches have been added.   Some other minor changes
+have been made to comply with the new MIME standard.
+See _m_h_n(1) for complete details.
+post  When posting mail with SendMail, _p_o_s_t will not use the
+ONEX command when it is posting a message with BCCs.
+scan  _s_c_a_n will now work with big width values.
+_F_o_r_m_a_t _S_t_r_i_n_g_s
+One new function has been added:
+%(profile arg)  This function looks up a component in the
+.mh_profile or context files and returns the
+value of that component.
+_C_o_n_f_i_g_u_r_a_t_i_o_n
+Two new configuration options are present:
+GCOS_HACK    The so-called "gcos" field of the password file
+is used as a last resort to find the user's
+full name (see _m_h-_p_r_o_f_i_l_e(5) for details).
+Enable this option if your _p_a_s_s_w_d(5) man page
+notes that the `&' character in the "gcos"
+field stands for the login name.
+NORUSERPASS  Tells _M_H that your system doesn't have the
+_r_u_s_e_r_p_a_s_s(3) routine; _M_H will include its own
+copy of this routine in its library.
+December 1, 1993
+Changes for MH 6.8                                         5
+_C_H_A_N_G_E_S _F_O_R _M_H _6._8
+This is the current released version of _M_H as of December
+14, 1992.  This release includes a number of bug fixes and
+internal changes to make the code more portable.  Two new
+authentication methods are provided for the POP, and support
+for SVR4 shared libraries is complete.
+The major user-visible change in this release is the
+incorporation of support for multi-media mail as specified
+by the Multi-purpose Internet Mail Extensions (MIME)
+RFC 1341.  This allows you to include things like audio,
+graphics, and the like, in your mail messages.  A new com-
+mand, _m_h_n, has been provided to support MIME and a detailed
+man page is provided in _m_h_n(1).
+_D_o_c_u_m_e_n_t_a_t_i_o_n
+The documentation has some general improvements, and the
+READ-ME document has been re-organized to help _M_H adminis-
+trators find the appropriate configuration options for their
+system.  The Makefiles in the papers/ hierarchy have been
+changed to invoke _T_e_X as "tex" (instead of "tex82").
+The following new man pages are also available:
+_m_h_n(1)      _m_h_n helps the user process multi-media mail.
+_m_h_p_a_r_a_m(1)  _m_h_p_a_r_a_m lets the user extract information from
+the _M_H profile.
+_p_o_p_a_u_t_h(8)  the APOP database administration program (see
+below).
+_p_o_p_i(1)     the POP initiator (see below).
+_s_l_o_c_a_l(1)   fully documents _s_l_o_c_a_l.  The _m_h_o_o_k(1) man page
+now documents only the _M_H receive-mail hooks.
+_I_n_t_e_r_n_a_l _C_h_a_n_g_e_s
+The _M_H source code is in the process of being cleaned up to
+make pedantic ANSI C compilers happy.  Occurrences of "NULL"
+have been replaced by "0" where appropriate.  Extra tokens
+after "#else" and "#endif" have been put inside comments
+(this is still in progress).  The code should now compile
+cleanly on many more systems, specifically, more variants of
+SVR4.
+The version of tws/dtimep.c which was included in MH
+6.7.2 was incompatible with the _l_e_x library on some systems,
+and has been removed.
+A bug in the handling of blind lists inside alias files
+December 14, 1992
+Changes for MH 6.8                                         6
+has been fixed.
+_P_o_s_t _O_f_f_i_c_e _P_r_o_t_o_c_o_l
+There were three new options added to the POP.
+APOP  This option indicates that the POP daemon will support
+the   non-standard   APOP  command  which  provides  a
+challenge-based authentication system  using  the  MD5
+message digest algorithm.
+This option also causes the _p_o_p_a_u_t_h program to be  in-
+stalled,  which allows the administrator to manipulate
+the APOP authorization database.
+KPOP  Support for KERBEROS with POP.  This code builds _p_o_p_d,
+_i_n_c and _m_s_g_c_h_k to support only the "kpop" protocol.
+This code is still expiremental, but is available for
+those sites wishing to test it.
+MPOP  This option indicates that the POP daemon will support
+the non-standard XTND SCAN command which provides per-
+formance enhancements when using the POP over low-
+speed connections.
+This option also causes an interactive POP client pro-
+gram, _p_o_p_i, to be compiled and installed.  A man page
+for the _p_o_p_i program is also provided.  This option
+requires the configuration to have "bboards: pop".
+The APOP and MPOP non-standard POP facilities are documented
+in _T_h_e _I_n_t_e_r_n_e_t _M_e_s_s_a_g_e (ISBN 0-13-092941-7), a book by
+Marshall T. Rose.  For more details, see support/pop/pop-
+more.txt and the _A_d_m_i_n_i_s_t_r_a_t_o_r'_s _G_u_i_d_e.  The APOP option
+peacefully co-exists with the standard POP, KPOP completely
+replaces the standard POP, and MPOP requires "bboards: pop".
+_F_i_l_e _L_o_c_k_i_n_g
+The file locking code has been cleaned up to support three
+kinds of kernel-level file locking.  As appropriate for your
+system, include the LOCKF, FCNTL or FLOCK option.  For more
+details, see _m_h-_t_a_i_l_o_r(5).
+December 14, 1992
+Changes for MH 6.8                                         7
+Configuration Directives
+A number of new configuration directives have been added  or
+changed.  The full details are given in the READ-ME.
+cp:        The command used to  install  new  files  if  not
+"cp".
+ln:        The command used to link files  together  in  the
+source tree if not "ln".
+mts:       Full support for ZMAILER has been added.
+popdir:    The directory where _p_o_p_d will be installed if not
+/usr/etc.
+regtest:   Set to "on" to prevent the hostname  and  compile
+date from being included in _M_H binaries.
+sharedlib: You may now specify "sun4" or "sys5"  (for  SVR4)
+shared libraries.
+signal:    Specifies the base type of the function  returned
+by  _s_i_g_n_a_l().   This  was previously defined with
+"options TYPESIG".
+Several `-D' options to _c_c have been added or changed:
+APOP       Authenticated POP (see above).
+AUX        Support for A/UX systems.
+DBMPWD     The DBM option has been renamed DBMPWD.
+HESIOD     Support for the HESIOD name server.
+KPOP       KERBEROS POP (see above).
+LOCALE     Support for local characters sets; uses the _s_e_t_-
+_l_o_c_a_l() function.
+MAILGROUP  Makes _i_n_c set-group-id.  You may need this option
+if your /usr/spool/mail is not world-writeable.
+MIME       Multi-media mail.
+MPOP       Mobile POP (see above).
+MSGID      Enables _s_l_o_c_a_l to detect and surpress duplicate
+messages.
+OSF1       Support for DEC OSF1 systems.  May be incomplete.
+RENAME     Include this option if your system has a _r_e_n_a_m_e()
+December 14, 1992
+Changes for MH 6.8                                         8
+system call.
+SVR4       Support for System 5 Release 4 or newer systems.
+TYPESIG    This option has been dropped.  See `signal'
+above.
+UNISTD     Include this option if your system has the
+include file <unistd.h>.
+VSPRINTF   Include this option if your system has the
+_v_s_p_r_i_n_t_f() library routine; otherwise, __d_o_p_r_n_t()
+will be used.
+YEARMOD    Forces the _m_h-_f_o_r_m_a_t `year' function to return
+2-digit values.  Use this option during a brief
+transition period if you have local _m_h-_f_o_r_m_a_t
+files which need to be converted to support 4-
+digit years.
+_F_U_N_C_T_I_O_N_A_L _C_H_A_N_G_E_S
+In addition to the configuration changes mentioned above, a
+number of functional changes have been made to the system.
+Many programs have new features added and a few new programs
+have are provided. Each command's manual page gives complete
+information about the its operation.  Here is a short sum-
+mary of the changes.
+_M_H _S_e_q_u_e_n_c_e_s
+A larger number of user-defined sequences are available.
+Previously, this number had been 10.  On 32-bit systems, 26
+user-defined sequences are available.
+_P_r_o_f_i_l_e _C_o_m_p_o_n_e_n_t_s
+_M_H programs will now complain if the .mh_profile does not
+end in a newline.  Also, one enhancement and one new profile
+component are provided:
+Aliasfile:  Multiple filenames may now be given.
+Inbox:      New; the default folder (for _i_n_c, etc.) if not
+"inbox".
+December 14, 1992
+Changes for MH 6.8                                         9
+_F_o_r_m_a_t _S_t_r_i_n_g_s
+A few minor bugs were fixed in format string handling, and a
+few  new features were added.  See _m_h-_f_o_r_m_a_t(5) for complete
+details.
+Addresses      An  attempt  is  made   to   decipher   X.400
+RFC 987-style addresses.
+Comments       Comments may be added to _m_h-_f_o_r_m_a_t  files;  a
+comment  begins with the 2-character sequence
+"%;", and ends with an un-escaped newline.
+%(modulo n)    The `modulo' function escape has been added.
+%(year{date})  The date parser has been enhanced  to  under-
+stand  more  illegal date formats; `year' now
+returns a 4-digit number.
+_U_s_e_r _I_n_t_e_r_f_a_c_e _P_r_o_g_r_a_m_s
+A number of _M_H commands have minor changes:
+ali       The output with `-user -list' was changed to match
+the output with `-nouser -list'.
+burst     Will no longer drop the last message of a digest.
+inc       Accepts the `-apop' switch for authenticated POP
+(see above); will attempt to detect write errors
+(e.g., no space left on device) when incorporating
+mail; no longer replaces newline characters with
+NULLs.
+folder    The `-noprint' option was broken and has been
+dropped.
+forw      Supports `-mime' to use MIME-style multi-part mes-
+sages.
+mhl       Will no longer put an extra space at the end of
+the `%{text}' in a formatfield.
+mhn       New; manipulates multi-media (MIME) messages; a
+detailed man page is provided.
+mhparam   New; reads the _M_H profile (and context) and writes
+the values of the specified components on the
+standard output; useful in programmatic con-
+structs.
+msgchk    Supports `-apop' (see above).
+December 14, 1992
+Changes for MH 6.8                                        10
+packmbox  New; packs an _M_H folder into a UUCP-style mailbox.
+popi      New; a client-side POP initiator; available only
+if you built _M_H with the MPOP option (see above).
+refile    A bug where the `rmmproc' did not remove all
+specified message files has been fixed.
+scan      The `-file' option is fully supported and will no
+longer complain about empty folders.
+send      Supports `-mime' and `-split' to split large mes-
+sages into multiple partial messages using MIME.
+_S_u_p_p_o_r_t _P_r_o_g_r_a_m_s
+fmtdump   Can now read a format file, or a format string
+given on the command line.
+popauth   New; manages the APOP authorization database (see
+above).
+sendmail  The _s_e_n_d_m_a_i_l replacement will be installed only if
+your `mts' setting uses the `/smtp' option.
+slocal    A new man page for _s_l_o_c_a_l is available; the new
+`mbox' action is available to write a file in
+_p_a_c_k_f format; a bug where extra `>' characters
+were written to MMDF-style maildrops has been
+fixed; if compiled with the MSGID option, can
+detect and suppress reception of duplicate mes-
+sages.
+viamail   New; bundles a directory (like _s_h_a_r) and sends it
+through multi-media mail.
+December 14, 1992
+Changes for MH 6.7.2                                      11
+_C_H_A_N_G_E_S _F_O_R _M_H _6._7._2
+The MH.6.7.2 patch release is a maintenance release.  This
+is the current released version of _M_H as of February 1,
+1992.
+This release now supports the NCR Tower running SYS5R4.
+The WP changes installed in MH.6.7.0 have been removed.
+_S_h_a_r_e_d _L_i_b_r_a_r_i_e_s
+Support for SYS 5 shared libraries is in progress.
+Support for Sun OS 4.0 shared libraries had been
+improved.  The _M_H library has been modified to move initial-
+ized data into a data definition file.  The shared library
+will now consist of a libmh.so and libmh.sa file.  The
+shared library version number will no longer track the _M_H
+patch release number, and its numbering begins with version
+`1.1' with this release.
+_R_e_p_l_a_c_e_m_e_n_t _S_e_n_d_M_a_i_l
+Since many standard system programs expect to post mail by
+invoking /usr/lib/sendmail, a minimal replacement _S_e_n_d_M_a_i_l
+is provided in this release.  This replacement is meant to
+be installed on (e.g., diskless) client workstations which
+post mail using SMTP, and do not run a message transport
+system.  It will call _p_o_s_t to post mail; be sure you have
+configured _M_H with the `/smtp' mts option.  This sendmail
+replacement is installed in your _M_H etc directory, and you
+should link /usr/lib/sendmail to it.
+_F_o_r_m_a_t _S_t_r_i_n_g_s
+A manual page for the _f_m_t_d_u_m_p format string disassembler  is
+supplied, and some new format functions were added:
+folder   In _s_c_a_n, this component escape contains the name of
+the current folder.  It is not defined for other _M_H
+commands.
+getenv   This function escape returns the value  of  an  en-
+vironment variable.
+There will be some additional changes in these routines
+in the next patch release.
+Feb 1, 1992
+Changes for MH 6.7.2                                      12
+_O_t_h_e_r _B_u_g _F_i_x_e_s _a_n_d _E_n_h_a_n_c_e_m_e_n_t_s
+In addition to some other minor enhancements, some bugs were
+fixed which in general were not user-visible:
+Blind lists   Users may now specify RFC822 address groups in
+their  alias  files.   These groups are imple-
+mented by _M_H as blind lists.
+date parsing  A number of sites have brain-damaged  versions
+of lex.  _M_H will now come with the date parser
+already run through lex.
+mark          A bug dealing with _m_a_r_k and the sequence named
+`cur' is fixed.  This was previously a problem
+for mh-e users.
+MH.doc        The _M_H nroff version of the manual  no  longer
+contains teletype escape sequences.
+scan          Can now handle headers as long as 512 bytes.
+Signals       _M_H programs will no longer catch the  HUP  and
+TERM  signals while waiting for a sub-process.
+This was causing hung processes when your ter-
+minal line was was dropped unexpectedly.
+Signature     If your signature is not defined, _M_H will  use
+the   value   of   the  gecos  field  of  your
+/etc/passwd entry as your signature.
+version.sh    A bug in the awk script  in  config/version.sh
+was fixed.
+Feb 1, 1992
+Changes for MH 6.7.1a                                     13
+_C_H_A_N_G_E_S _F_O_R _M_H _6._7._1_a
+The MH.6.7.1a patch was made available on January 25, 1991
+for limited distribution only.  (This release had some known
+bugs, and so was not widely distributed.) This release
+incorporates several new features of particular note to
+users of sequences and format strings, as well as some gen-
+eral documentation improvements.  There are a few minor
+enhancements and internal bug fixes also.  Complete documen-
+tation of these changes is given in the individual manual
+pages, and the READ-ME file.
+_M_e_s_s_a_g_e _S_e_q_u_e_n_c_e_s
+A new manual page, _m_h-_s_e_q_u_e_n_c_e (5), has been added.  This
+manual page attempts to completely document the syntax and
+semantics of _M_H message sequence specifications.
+A powerful new feature is the ability to specify mes-
+sage ranges with user-defined sequences.  The  specification
+"name:n" may be used, and it designates up to the first `n'
+messages (or  last  `n' messages  for  `-n') which  are
+elements  of the user-defined sequence `name'.
+The message specifications "name:next" and "name:prev"
+may also be used, and they designate the next or previous
+message (relative to the current message) which is an ele-
+ment of the user-defined sequence `name'.  The specifica-
+tions "name:first" and "name:last" are equivalent to
+"name:1" and "name:-1", respectively.  The specification
+"name:cur" is not allowed (use just "cur" instead).
+These specifications allow the user to step through a
+sequence with a command like "show name:next".
+_F_o_r_m_a_t _S_t_r_i_n_g_s
+_M_H format strings now support an if-then-elseif-else clause
+(the `elseif' is new).  This will make format strings with
+multi-case conditions somewhat less complex.
+A new format function `addr' had been added.  This
+function takes an address header name as its argument, and
+returns a rendering of the address contained in that header
+as "user@host" or "host!user".
+Format widths now may be specified as a negative
+number.  This causes the output to be right-justified within
+the format width.
+January 25, 1991
+Changes for MH 6.7.1a                                     14
+_O_t_h_e_r _C_h_a_n_g_e_s
+Along with a few minor enhancements, some  bugs  were  fixed
+which in general were not user-visible:
+fmtdump  This  new  program  produces   an   pseudo-language
+representation of an _M_H format file, vaguely remin-
+iscent of assembly  language.   While  this  output
+format  is  not explicitly documented, it can still
+be useful when debugging _M_H format files.
+refile   Now takes a `-[no]rmmproc' switch.  This  makes  it
+easier to avoid loops when your "rmmproc" calls _r_e-
+_f_i_l_e.
+slocal   A  problem  with  the  UUCP-style  mailboxes,   the
+`RPATHS'  configuration  option,  and  the "Return-
+Path:" header was fixed.
+sortm    Will ensure that no messages are lost if it is  in-
+terrupted.
+whatnow  Will now tell you where it is  leaving  the  draft,
+when  interrupted  in the initial edit.  Previously
+the draft was simply unlinked.
+_C_o_m_p_i_l_a_t_i_o_n _O_p_t_i_o_n_s
+LOCKF    This option causes _M_H to  use  the  lockf()  system
+call   for   locking  (if  available),  instead  of
+flock().
+January 25, 1991
+Changes for MH 6.7.1                                      15
+_C_H_A_N_G_E_S _F_O_R _M_H _6._7._1
+The MH.6.7.1 patch release is a maintenance release, and as
+such, provides few changes from the previous release.  This
+is the current released version of _M_H as of December 14,
+1990.
+_U_s_e_r-_V_i_s_i_b_l_e _C_h_a_n_g_e_s
+The major change in this release is to the POP daemon
+(popd).  In _M_H 6.7, it was changed to be able to read both
+UUCP and MMDF-style mailboxes.  This did not work as
+reported.  The code has now been changed to parse MMDF-style
+mailboxes if you are configuring MH to run with MMDF as your
+message transport system.  Otherwise, UUCP-style mailboxes
+are expected.
+Since there are number of client programs available for
+only the POP2 protocol instead of POP3, popd has been
+updated to support both protocols.  This is a major win.  If
+you are compiling with POP turned on, add the `POP2' option
+to your _M_H config file, and the POP daemon will respond to
+POP2 or POP3 commands.  If you're using POP, there's no rea-
+son not to include this option; it does not affect the
+existing support for POP3.
+_I_n_t_e_r_n_a_l _C_h_a_n_g_e_s
+Some bugs were fixed which in general were not user-visible:
+context     Errors when writing out sequences  are  detected
+correctly.
+inc         No longer inserts extra blank  lines  into  mes-
+sages.
+mh-format   A nil pointer bug  in  the  address  parser  was
+fixed.
+repl, etc.  The malloc/free problem has been fixed.
+rmf         A spelling error in the `-nointeractive'  switch
+has been corrected.
+rcvtty      Will not print the message size if not available
+(i.e., zero).
+send/post   Illegal signatures  (those  containing  unquoted
+"."s) will be quoted.
+December 14, 1990
+Changes for MH 6.7.0                                      16
+_G_E_N_E_R_A_L _C_H_A_N_G_E_S _F_O_R _M_H _6._7._0
+The author is pleased to announce that there are very few
+user-visible changes to _M_H 6.7 from the previous _M_H 6.6 dis-
+tribution.  The majority of development was in the form of
+bug fixes and slight enhancements.  In addition, this
+release is slightly faster than the previous release.  With
+a few minor exceptions, it is backward-compatible with the
+previous release.  _M_H 6.7.0 is the current released version
+of _M_H as of April 12, 1990.
+The changes were made mainly to generalize the source
+code to be compatible with a larger range of systems and
+compilers.  There were many small changes to add declara-
+tions for ANSI C compliance.  The System 5 support has been
+brought up to SYS5 R3, and there is support for Sun OS 4.0.
+_U_s_e_r-_V_i_s_i_b_l_e _C_h_a_n_g_e_s
+Here a quick summary of the changes that were made which are
+not backward-compatible with the previous release of _M_H:
+repl   The `-format' and `-noformat' switches have not been
+functional since _M_H 5, and have been removed.  Any
+users who have these switches in their .mh_profile,
+will have to remove them.
+sortm  Previously, in most cases _s_o_r_t_m would fill-in any
+gaps in the numbering of a folder, by renumbering the
+messages starting with `1'.  This will no longer
+occur; for this behavior, use "folder -pack".
+_U_s_i_n_g _A_l_i_a_s_e_s
+A new profile entry `Aliasfile:' has been added.  The _a_l_i,
+_s_e_n_d, and _w_h_o_m programs will look for this profile entry and
+treat it as they would an argument to `-alias'.  This should
+make it easier for novice _M_H users to begin using aliases.
+_R_e_a_d_i_n_g _N_e_t_w_o_r_k _N_e_w_s & _B_B_o_a_r_d_s
+The UCI BBoards facility can read local BBoards, and if com-
+piled with the `bboards: pop' and `pop: on' options, can
+also read remote BBoards using the Post Office Protocol (POP
+ver. 3).  With this release, _M_H can instead be compiled to
+read the Network News (i.e., USENET) using the Network News
+Transfer Protocol (NNTP).
+This capability is enabled by compiling _M_H with the
+`bboards: nntp' and `pop: on' options.  Unfortunately, read-
+ing remote BBoards via the POP and reading the Network News
+via the NNTP are mutually exclusive options.
+April 12, 1990
+Changes for MH 6.7.0                                      17
+To support the NNTP, a new module, uip/pshsbr.c, is
+compiled and loaded into _b_b_c and _m_s_h instead of
+uip/popsbr.c.  The default BBoard is changed from "system"
+to "general" for the NNTP.
+When reading BBoards, _b_b_c will first look for local
+BBoards, and then contact the NNTP server to read the Net-
+work News.  The location of the NNTP server should be speci-
+fied with the `nntphost:' entry in the mtstailor file (see
+the _M_H Administrator's Guide for details), or may be speci-
+fied on the command line with the `-host' switch.
+_F_o_r_m_a_t _S_t_r_i_n_g_s
+The manual page _m_h-_f_o_r_m_a_t (5) has been rewritten to give a
+better explanation of how to write format strings, and how
+they are interpreted by _M_H.  A line-by-line description of
+the default _r_e_p_l form file (replcomps) is now included in
+that manual page.
+Some new format functions were added, and others  were  aug-
+mented:
+trim        Strips any leading and trailing white-space from
+the current string value.
+date2local  Will coerce the date to the local timezone.
+date2gmt    Will coerce the date to GMT.
+divide      Divides the current numeric value by  its  argu-
+ment.   This  could  be useful for building _s_c_a_n
+format strings which print large  message  sizes
+in "Kb" or "Mb".
+friendly    If the address  field  cannot  be  parsed,  this
+function  will  return  the  text of the address
+header, instead of a null string.
+szone       A flag indicating whether the timezone  was  ex-
+plicit in the date string.
+_P_R_O_G_R_A_M _C_H_A_N_G_E_S
+In addition to the general changes mentioned above, many
+programs have specific new features added, either by new
+switches or by expanded functionality.  Each command's
+manual page gives complete information about its new
+options.  Here is a short summary.
+_U_s_e_r _I_n_t_e_r_f_a_c_e _P_r_o_g_r_a_m_s
+anno      Accepts a `-nodate' switch which inhibits the date
+April 12, 1990
+Changes for MH 6.7.0                                      18
+annotation, leaving only the body annotation.
+folder    When invoked with the `-pack' switch and the new
+`-verbose' switch, _f_o_l_d_e_r will give information
+about the actions taken to renumber the folder.
+On most systems, _f_o_l_d_e_r can now create any
+non-existing parent folders of a new sub-folder.
+forw      When making digests, _f_o_r_w will put the issue and
+volume numbers in addition to the digest list
+name, in the digest trailer.
+inc       Detects NFS write failures, and will not zero your
+maildrop in that event.
+msh       Supports a variant of the new _s_o_r_t_m.
+prompter  Considers a period on a line by itself to signify
+end-of-file when the `-doteof' switch is speci-
+fied.
+repl      The `-[no]format' switches have not been used
+since _M_H 5 and have been deleted. _r_e_p_l will now
+find filter files in the _M_H library area.
+scan      With the `-file msgbox' switch, _s_c_a_n can list a
+_p_a_c_k_f'd-format file directly (without using _m_s_h).
+Lists messages in reverse order with the
+`-reverse' switch.  This should be considered a
+bug.
+sortm     Now has the options: `-textfield field', `-notext-
+field', `-limit days', and `-nolimit'.
+With these options, _s_o_r_t_m can be instructed to
+sort a folder based on the contents of an arbi-
+trary header such as "subject".
+_s_o_r_t_m minimizes renaming messages, and will no
+longer arbitrarily pack folders; for this
+behavior, use "folder -pack".
+whatnow   Deletes the draft by renaming it with leading
+comma, instead of unlinking it.
+_M_H _S_u_p_p_o_r_t _P_r_o_g_r_a_m_s
+The following support programs also have changes or enhance-
+ments:
+mhl     Will now accept a format string  on  any  component,
+not just on addresses and dates.
+April 12, 1990
+Changes for MH 6.7.0                                      19
+popd    Will use _s_h_a_d_o_w passwords if compiled with the SHA-
+DOW option.  It can now also read UUCP-style mail-
+drops directly.
+rcvtty  If given no arguments, _r_c_v_t_t_y will produce a scan
+listing as specified by a format string or file; a
+default format string is used if one is not speci-
+fied.
+Before the listing is written to the users terminal,
+the terminal's bell is rung and a newline is output.
+The `-nobell' and the `-nonewline' options inhibit
+these functions.
+_r_c_v_t_t_y will obey terminal write notification set by
+_m_e_s_g.  With the `-biff' switch, _r_c_v_t_t_y will also
+obey the mail notification status set by _b_i_f_f.
+On BSD43 systems, as with _w_r_i_t_e, _r_c_v_t_t_y will be
+installed set-group-id to the group "tty".
+slocal  Understands UUCP-style "From " lines and will write
+output files using this format if appropriate.
+Before invoking a delivery program, _s_l_o_c_a_l will
+strip such lines unless compiled with the RPATHS
+option, in which case it will will convert such
+lines into "Return-Path:" headers.
+_s_l_o_c_a_l has a new result code "N", for use in .mail-
+delivery files.  With this result code, _s_l_o_c_a_l will
+perform the action only if the message has not been
+delivered and the previous action succeeded.  This
+allows for performing an action only if multiple
+conditions are true.
+_D_O_C_U_M_E_N_T_A_T_I_O_N
+Several of the older _M_H papers have been difficult to format
+because they depended on an older version of PhDTeX which
+was not supplied.  These papers have been updated, and some
+TeX library files are supplied in papers/doclib/, so that
+these papers may be generated on any system with TeX.
+Many of the manual pages have been revised to include
+documentation of new command options, and some have been
+expanded to give more detail.  All are now slightly refor-
+matted at installation time to make them more compatible
+with programs like _m_a_k_e_w_h_a_t_i_s.
+_M_H _A_D_M_I_N_I_S_T_R_A_T_I_O_N
+This section describes changes in configuring, compiling and
+installing _M_H 6.7 and should not be of interest to casual _M_H
+April 12, 1990
+Changes for MH 6.7.0                                      20
+users.  The READ-ME file has been considerably revised and
+expanded to give more detail about the configuration and
+compilation options which have been included in this
+release.  Some compilation options have been removed, and
+many new options have been added.
+All _M_H Makefiles have been updated to work around some
+incompatibilities introduced in newer versions of _m_a_k_e.  _M_H
+programs will no longer be installed with the sticky-bit
+turned on.
+Reading this section not a substitute for carefully
+reading the READ-ME file before attempting to compile _M_H
+_B_u_g _F_i_x_e_s
+Some bugs were fixed which in general were not user-visible:
+address parser  Fixed to allow use of the "AT"  domain,  and
+some minor bugs were fixed pertaining to ad-
+dress groups.
+date parser     Improved to accept  more  forms  of  illegal
+dates.  Military timezones were removed.
+dynamic memory  Many problems with corruption of the dynamic
+memory pool have been fixed.
+locking         Will open files for write, if  necessary  to
+enable locking.
+nil pointers    All reported nil pointer problems have  been
+fixed.
+replcomps       The "In-Reply-To:" header had  quotes  added
+around the date field to comply with RFC822.
+_W_h_i_t_e _P_a_g_e_s
+If _M_H is compiled with the WP option, _s_e_n_d recognizes an
+address between "<<" and ">>" characters such as:
+To: << rose -org psi >>
+to be a name meaningful to a whitepages service.  In order
+to expand the name, _s_e_n_d must be invoked interactively
+(i.e., not from _p_u_s_h).  For each name, _s_e_n_d will invoke a
+command called _f_r_e_d in a special mode asking to expand the
+name.
+To get a copy of the white pages service, contact
+wpp-manager@psi.com.
+April 12, 1990
+Changes for MH 6.7.0                                      21
+_C_o_n_f_i_g_u_r_a_t_i_o_n _O_p_t_i_o_n_s
+Some configuration options have been added or changed:
+cc          To specify an alternate C compiler.
+ccoptions   Defaults to `-O'.
+bboards     May now be defined as "on", "off", "pop", or
+"nntp".
+bbdelivery  Determines whether the bboard delivery agent and
+library files should be installed.
+lex         To specify an alternate version of _l_e_x.
+mailgroup   If defined, _i_n_c will be made set-group-id to
+this group.
+sharedlib   For SUN40 systems; if "on", makes libmh.a into a
+shared library.
+slibdir     The directory where the above shared library
+should be installed.
+sprintf     Set this to "int" if that's what your
+_s_p_r_i_n_t_f (3) library routine returns.
+_C_o_m_p_i_l_a_t_i_o_n _O_p_t_i_o_n_s
+For different configurations, several `-D' options to _c_c
+have been added or changed:
+BERK        This disables the address and date parsing rou-
+tines.  If you want to do much with
+_m_h-_f_o_r_m_a_t (5), don't enable this.
+BSD43       Will make _r_c_v_t_t_y set-group-id to the group
+"tty".
+DBM         For sites with a dbm-style password file (such
+as with Yellow Pages), _M_H will not read the
+entire passwd file into a cache.  At one site
+that runs YP on a large passwd file, using this
+showed a 6:1 performance improvement.
+NETWORK     This option has been deleted.  See SOCKETS.
+NOIOCTLH    Tells _M_H not to include the file sys/ioctl.h.
+Use this if this file is not present on your
+system.
+NTOHLSWAP   On systems with TCP/IP networking, _m_s_h will try
+to use the ntohl() macro from the file
+April 12, 1990
+Changes for MH 6.7.0                                      22
+netinet/in.h to byte-swap the binary map files
+it writes.
+SENDMAILBUG Some versions of _s_e_n_d_m_a_i_l return a 451 (failure)
+reply code when they don't mean to indicate
+failure.  This option considers that code to be
+equivalent to 250 (OK).
+SHADOW      Causes _p_o_p_d to read the file /etc/shadow for
+encrypted passwords instead of /etc/passwd.  Use
+this if you have a shadow password file (such as
+on newer versions of SYSTEM 5).
+SOCKETS     Enable this if you are on a non-BSD system with
+a socket interface for TCP/IP networking compa-
+tible with 4.2BSD UNIX.
+SUN40       Use on Suns running Sun OS 4.0 and later.
+SYS5        This option has been updated to refer to SYS5 R3
+and later systems.
+SYS5DIR     Use this if your system uses "struct dirent"
+instead of "struct direct".  This should be true
+for systems based on SYS5 R3 and later.
+TYPESIG     Defines the base type for the _s_i_g_n_a_l system
+call.  This defaults to "int", but should be
+defined as "void" if appropriate for your sys-
+tem.
+WP          Enables support for the White Pages service.
+_I_n_s_t_a_l_l_a_t_i_o_n
+_M_H will now explicitly set the protection mode on every file
+it installs.
+Previously any existing file installed by _M_H would be
+backed up into the source tree, and then overwritten.  Now,
+a few system-dependent files will not be overwritten, and
+your changes will have to be merged in by hand.  See the
+READ-ME file for more details.
+April 12, 1990

Mercurial > hg > Applications > mh

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