Columbia Kermit/kermit.zip/c-kermit/ckc188.txt

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File CKCKER.UPD, Update history for C-Kermit.                      -*- text -*-

Author:  Frank da Cruz
Address: Watson Laboratory, Columbia University Center for Computing Activities
         612 West 115th Street, New York, NY 10025, USA, Earth
Phone:   [phone]
Fax:     [phone]
E-Mail:  [e-mail] (Internet), FDCCU@CUVMA (BITNET/EARN)

  Copyright (C) 1985, 1992, Trustees of Columbia University in the City of New
  York.  Permission is granted to any individual or institution to use this
  software as long as it is not sold for profit.  This copyright notice must be
  retained.  This software may not be included in commercial products without
  written permission of Columbia University.

Most recent update: Mon Nov 23 12:03:39 1992

NOTE: This file renamed to CKCKER.UPD from CKUKER.UPD, 4 July 1992.

This file is intended for C-Kermit developers.  To reduce its size, older
material has been moved to separate files:

  CKCV4E.UPD -- Version 4E and earlier (through January 1989)
  CKCV4F.UPD -- Version 4F (which was never formally released)
  CKC178.UPD -- Version 5A prior to the first Beta release, edit 179 (567K!).
  CKC188.UPD -- Version 5A from edit 179 until final release.  This file.
  CKCKER.UPD -- Version 5A, changes since final release.
  CKCKER.2DO -- Things to Do, moved from this file in edit 183.

Instructions for reading any of these files.  For each edit there is a
narrative of what was done.  Each of these narratives is added at the top,
just below the UPDATE HISTORY heading, and reads top-to-bottom.  So to find
out what has happened since you last looked at C-Kermit, find the entry for
the version/edit that you have, such as 5A(180), scan upwards for the next
version/edit, read downwards, then repeat: {
  scan upwards twice;
  read downwards once;
} until you get back here.


UPDATE HISTORY:
==============

------------------------------
5A(188) Mon Nov 23 11:59:55 1992

Removed BETA from program herald and released version 5A.  These are the
components of the final 5A(188) release:

FILE      LAST EDIT    VERSION    COMMENTS

ckcasc.h  19 May 92               ASCII character symbol definitions
ckcdeb.h   6 Nov 92               Definitions used by all modules
ckcker.h  23 Nov 92               Kermit-specific definitions
ckcsym.h  19 May 92               C preprocessor symbol definitions
ckcxla.h   4 Aug 92               Common character-set translation definitions
ckuver.h  18 Nov 92               Version header definitions

ckcmai.c  23 Nov 92    5A(188)    Main program
ckcpro.w  23 Nov 92    5A(052)    Protocol state switcher, "wart" language
ckwart.c  14 Jan 92    2A(009)    wart preprocessor for ckcpro.w
ckcpro.c  23 Nov 92    5A(052)    C-language protocol state switcher
ckcfns.c  24 Nov 92    5A(080)    System-independent protocol functions
ckcfn2.c  23 Nov 92                ...continued
ckcfn3.c  12 Oct 92                ...continued
ckcnet.h  13 Oct 92               Common network support definitions
ckcnet.c  23 Nov 92    5A(015)    Network support

ckcmdb.c  10 Nov 92       -       malloc()-debugging package

ckucmd.h  21 Nov 92               Interactive command parser symbols
ckucmd.c  22 Nov 92    5A(053)    Interactive command parser functions
ckuusr.h  26 Oct 92               User interface symbols
ckuusr.c  23 Nov 92    5A(092)    Interactive command parser
ckuus2.c  23 Nov 92                 ...continued
ckuus3.c  21 Nov 92                 ...continued
ckuus4.c  22 Nov 92                 ...continued
ckuus5.c  23 Nov 92                 ...continued
ckuus6.c  23 Nov 92                 ...continued
ckuus7.c  23 Nov 92                 ...continued
ckuusx.c  23 Nov 92               User interface common routines
ckuusy.c  18 Nov 92               Command-line option parser

ckudia.c   2 Nov 92    5A(046)    DIAL command
ckuscr.c   2 Nov 92    5A(015)    SCRIPT command

ck9con.c  12 Oct 92    5A(06)     OS-9 CONNECT command
ck9fio.c  10 Jul 92    5A(07)     OS-9 file system interface
ck9tio.c  12 Oct 92    5A(08)     OS-9 communications i/o

ckdcon.c  10 Oct 92    5A(44)     AOS/VS CONNECT command
ckdfio.c  10 Oct 92    5A(064)    AOS/VS file system support
ckdtio.c  10 Oct 92    5A(096)    AOS/VS communications i/o

ckicon.c   1 Sep 92    1.3        Amiga CONNECT command
ckifio.c   1 Sep 92    1.6        Amiga file system support
ckistu.c   1 Sep 92    1.5        Amiga stub routines
ckitio.c   1 Sep 92    1.7        Amiga communications i/o
ckiutl.c   1 Sep 92    1.7        Amiga utility functions

ckocon.c  25 Oct 92     -         OS/2 CONNECT command
ckodir.h  20 Jan 92               OS/2 file system definitions
ckoker.h   6 Nov 92               OS/2 compilation definitions
ckolat.h  11 Jul 92               OS/2 LAT support definitions
ckonet.c   8 Aug 92    5A(008)    OS/2 network support
ckotio.c  16 Nov 92     -         OS/2 communications i/o

ckscon.c  20 Jul 92    5A(031)    Atari ST CONNECT command
cksfio.c  20 Jul 92    5A(059)    Atari ST file system interface
ckstio.c  20 Jul 92    5A(086)    Atari ST file communications i/o

ckucon.c  23 Nov 92    5A(047)    CONNECT command for UNIX
ckufio.c  23 Nov 92    5A(067)    File system interface for UNIX and OS/2
ckutio.c  23 Nov 92    5A(102)    Communications i/o for UNIX
ckuxla.h  27 Jun 92               Character-set symbols for UNIX & others
ckuxla.c  21 Nov 92    5A(018)    Character-set translation for UNIX & others
ckustr.c  11 Sep 92      -        String extraction module for 2.xBSD
cku2tm.c  11 Sep 92      -        ctimed support for 2.10 BSD

ckvvms.h   7 Oct 92               VMS- and OpenVMS-specific definitions
ckvcon.c  26 Oct 92    5.0-028    CONNECT command for VMS and OpenVMS
ckvfio.c   5 Nov 92    2.0-095    File system support for VMS and OpenVMS
ckvtio.c  23 Nov 92    2.0-050    Communications i/o for VMS and OpenVMS
ckvioc.h  19 Oct 92      -        VMS ioctl() simulation symbol definitions
ckvioc.c  19 Oct 92      -        VMS ioctl() simulation
ckvcvt.c   6 Sep 92    T1.0-05    VMS labeled-file decoder

------------------------------
5A(187) Mon Nov 23 03:22:34 1992

Fixes from Kai Uwe Rommel for OS/2 popen() for IBM C.  ckotio.c, ckufio.c.
(Reports from Michael Godfrey say it doesn't work.)

Changed the behavior of the protocol module if it gets an error packet when
running in (what Kermit thinks is) the background.  Previously it always
exited unless it was in server mode.  Now it exits only if (a) not in server
mode, (b) at command top-level.  This way, if Kermit is executing a TAKE file
or macro, the TAKE file or macro can decide what action to take if a file
transfer command fails.  ckcpro.w.

Added an alternative makefile entry for Interactive 386/IX from Steen
Hammerum <[e-mail]>, "make is5r3net2".

Added a few more items to the SHOW FEATURES display.  Made the size of
trmbuf[] (the termcap buffer) be selectable at compile time by defining
TRMBUFL to be the desired length.  It defaults to 1024, its previous value.
Tom Kloos <[e-mail]>.  ckuus5.c.

Fixed the following interactive command-parsing bug reported by Tom Kloos:
If you complete a field with ESC, and the following field has a default value,
and you type leading spaces in that field, the default is supplied and
C-Kermit goes on to the next field without notifying the user.  Example:

  SET DIAL DIS<ESC>play <SP>ON

At this point, C-Kermit is trying to confirm the command.  Fixed by having
the command-parsing static "inword" variable managed in different places, with
its setting determined by whether the requested keyword or filename completion
was performed successfully.  ckucmd.c.

Fixed parsing of "help help".  Previously, the Copyright line was printed when
the user typed ESC or SP in the middle of the second "help".  ckuus2.c.

Added previously missing command confirmation to the CD command.  ckuus5.c.

While exercising the interactive command parser, found another long-standing
bug, namely that under certain conditions, trailing whitespace could cause
cmcfm() to fail erroneously.  This was due to overzealous backing up of too
many pointers while trimming trailing whitespace in gtword().  Fixed in
ckucmd.c.

Removed -DNOJC from "mips" makefile entry for MIPS Computer Systems.
Reportedly, job control works now.  Put back -DNOJC if job control causes
trouble.

Installed OS/2 patches from Kai Uwe Rommel.  These include another attempt
to make his homegrown popen() and pclose() routines for IBM C; something about
"hot handles"; and preliminary hooks for remote operation.  Many modules, but
mostly ckotio.c.

Updated UTEK makefile entries to specify a larger (2K) TRMBUFL.  Tom Kloos.

Fixed SET DELAY to not allow negative numbers, and to allow positive numbers
up to 999 (previously the limit was 94).  Ditto for SET RETRY.  ckuus3.c.

Changed UNIX version of SPACE command to allow tilde notation in the
(optional) directory name (by calling cmdir() instead of cmtxt()).

Changed VMS communication-device-reading routine, txbufr(), to read no more
than 512 bytes at a time, so as to minimize the chance of exceeding small
BYTLM quotas, a workaround suggested by Terry Kennedy.  ckvtio.c.

Mike Freeman <[e-mail]> pointed out that wildcard sends
didn't work from the command line on VMS, e.g. "kermit -s *.log".  Fixed in
ckuusy.c.  This fix should also apply to all the other non-UNIX OS's too.

Changed the fatal() routine to give a VMS-style error message in the VMS
version.  ckuusx.c.

Make MS an invisible abbreviation for MSEND.  ckuusr.c

Change the message "Escape back to your local Kermit and give a SEND/RECEIVE
command" to "Return to your local Kermit and..." because some Kermit programs,
like Mac Kermit, do not require you to escape back.  ckcpro.w.

Added CHECK DYNAMIC-MEMORY to check whether Kermit was built with dynamic
memory allocation (i.e. whenever SET BUFFERS is available).  Also fixed order
of CHECK keywords.  ckuus3.c.

Added O/o-diaeresis Latin1-to-ASCII translations for Icelandic.  ckuxla.c.

Fixed bug with \fexec().  If recursive calls nested too deeply it would try
to free memory that had not been malloc'd and dump core.  Also changed
definition of recursion depth limit, CMDDEP, to allow it to be overridden by
a CFLAGS value, e.g. -DCMDDEP=100.  Changed SHOW FEATURES to display CMDDEP
value.  ckucmd.c, ckucmd.h, ckuus5.c.

Add \v(system) entry for Atari ST = "Atari_ST".  ckuus4.c.

Removed some unneeded casts of 3rd debug() argument to (int) in ckucmd.c,
which (justifiably) caused compilation warnings from 16-bit-int compilers.
ckucmd.c.

Fixed arraynam() to catch too-long array references and give an intelligent
error message rather than something confusing about not finding the closing
bracket.  ckuus5.c.

C-Kermit now also issues a message when you give it a GET, REMOTE, BYE, or
FINISH command when it's in remote mode, top-level, etc, just like it does
when you give it a SEND, RECEIVE, or SERVER command.  It's about time --
people get very confused when they say BYE, expecting to exit from the
program, and instead it sits there for 5 seconds, then prints some squiggles
on the screen...  ckcpro.w.

Allowed EXTPROC as a synonym for COMMENT in the non-OS/2 versions too, in
case somebody wants to run an OS/2 C-Kermit self-running command file from
a different version of C-Kermit.  ckuusr.c.

Changed SHOW STATUS to not change STATUS.  ckuus5.c.

Changed local-mode file transfer interrupt message for POSIX to be like the
one for System V, i.e. you have to type the CONNECT-mode escape character
first.  ckuusx.c.

Added casts to some function calls in ckuus5.c, ckuusx.c, ckufio.c, ckucon.c,
and ckcnet.c for ANSI C compilation.  Warnings reported by William Bader.

Fixed bug reported by Christian Hemsing in the new packet timeout calculation;
sense of comparison was backwards.  Also, we were using the wrong receive
packet-length for comparison.  Also, we weren't checking it in the right
places.  chktimo() in ckcfn2.c, plus calls to chktimo() added or changed in
ckcpro.w, ckcfns.c, ckuus7.c, and prototype changed in ckcker.h.

New OS/2 definitions and makefile to include DDE4.MSG error messages when
built with IBM C, from Kai Uwe Rommel.

386BSD fix for running setuid uucp from Warren Jones <[e-mail]>.
In sysinit(), call congm() *after* priv_ini(); otherwise 386BSD doesn't let
C-Kermit open /dev/tty (even though it is world-read-writable) to get its
modes.  ckutio.c.

Add -DUSLEEP to Linux makefile entries.  Add a new "make linuxgcc2net" entry
to add TCP/IP support.  Rick Sladkey <[e-mail]>.

Replaced sprintf() calls in dbchr() with ordinary character assignments.
Makes a big difference, reportedly, on small systems when debug is on.
Suggested by Andy Fyfe.

------------------------------
5A(186) Tue Nov 10 09:50:10 1992

(Open)VMS CHANGES:

From Terry Kennedy at Saint Peters College, <[e-mail]>, fixes to
the subprocess / mailbox problems encountered during server execution of
REMOTE commands as well as interruption of locally-spawned commands.  Terry's
comments:

  Every way I found I could hang C-K would also hang Bliss Kermit-32.  Go
  fire it up and send it a "REMOTE HOST STOP/ID=0".

  I rewrote the whole thing from scratch for ckvfio.
  A number of things have been definitely fixed:

  1) ^C now works properly from the local-mode spawn/push/!/@ commands,
     regardless of whether a command was given.

  2) If the user issues a spawn/push/! with no command text, they get a
     DCL prompt (as before), but also get instructions on how to get back
     to Kermit.

  3) An explicit check for PRCLM is done and it tells the user to see their
     system manager to have the UAF PRCLM increased if it's too small.

  4) zsyscmd/zshcmd no longer call zxcmd - they're self-contained.

  5) zxcmd was completely rewritten to remove the command mailbox and to clean
     up the code and add lots more error reporting.  Also, newer VMS features
     (V4.0 and higher) were used to streamline the code.

  6) All of the stuff that went with zxcmd (get_subr_line, etc.) was cleaned
     up and error logging was added.

  7) Efficiency was improved in the mailbox handling code.

  8) If SUPERSAFE is defined (it is, by default [hardcoded in ckvfio.c]) then
     the subprocess will be checked before each read to the mailbox. If the
     subprocess is no longer present, then things will exit gracefully.

  9) If a subprocess requests input, it receives EOFs until it exits.

  10) A subprocess that runs forever (generating output) can be terminated.

  A few comments - #8 above adds a bit of overhead - but it's probably
  worth it. There's enough debugging stuff in there now that I should be
  able to fix any hangs/loops with a debug log.  The only hole I know of
  is programs which generate no output and issue no input requests.  These
  will hang the server.  I could put a timeout in there for no activity
  for "X" seconds, but that would be too long for impatient folks and too
  short for folks who issued a major command on a loaded system.  This
  needs to wait for a change to the terminal I/O to make it asynchronous.
  This problem also affects Bliss Kermit-32, BTW.

From Hirofumi Fujii <[e-mail]>:

Fixed CKVKER.COM to redefine VAXC$INCLUDE in the WIN/TCP case to also include
SYS$LIBRARY, as CKVKER.MAK and CKVKER.MMS already do.

From me:

Rewrote zkermini() routine in VMS version to allow the user's "-y" command
line selection of initialization file to take precedence.  The non-operation
of -y was reported by Rob Chalmers <[e-mail]>.  ckvfio.c.

Fixed OPEN !READ in VMS version, by adding allowance for both ZIFILE and
ZRFILE (rather than only ZIFILE) to zxcmd(), zclose(), and zclosf().  I don't
think this ever worked before.  Now it works fine.  OPEN !WRITE, however,
still does not work -- there is no code to support it.  ckvfio.c.

Fixed VMS PING command for DEC TCP/IP to (a) not stomp over prompt, and
(b) only send one ping instead of 10.  ckuusr.c.

UNIX CHANGES

changed UNIX SPACE command to allow an argument, like "space /".  ckuusr.c.

Dozens of bureaucratic edits to many modules to defeat warning messages from
SCO ODT 2.0 compiler concerning argument promotion rules, int vs long, etc.
These might also take care of certain core dumps that were recently reported.
Thanks to William Bader.

Removed "#include commonC.h" from ckcdeb.h for DIAB -- Bo Kullmar said this
was necessary.

Added notes to makefile about SunOS compile/link problems.

Added makefile entries for HP-UX 8.0 with curses support.  Suggested by Steve
Fosdick <[e-mail]>.

New makefile entry for SCO UNIX 3.2 V4.0 with TCP/IP, <dirent.h> for Extended
Acer File System (EAFS), curses, ANSI C compilation: "make sco32v4netc".
William Bader.

New makefile entry for Charles River Data Systems UNOS, "make crds", from
David Harrison, Kingston Warren Corp, Newfields, NH.

OS/2 CHANGES

Changed SPACE command, and OS/2 C-Kermit server's response to REMOTE SPACE
command, to use 'dir | find "bytes free"' rather than CHKDSK, which was a bad
idea (takes forever, can get hung on console, etc).  ckcpro.w, ckuusr.c.  But
we still need a better way to do this -- presumably a system call to
DosQFSInfo().

Later, replaced the above with improved code for SPACE and REMOTE SPACE for
OS/2 from Kai Uwe Rommel.  Many modules.

Also changed OS/2 SPACE command to take an argument, like "space a:".
ckuusr.c.

OS-9 CHANGES

DIAL command fixes for OS-9, related to signal handling, plus a minor change
in OS-9 signal-related definitions in ckcdeb.h from Christian Hemsing
<[e-mail]>.  Also, a new binary was provided.

GENERAL CHANGES

Removed unexpected file transfer display when local-mode server gets a FINISH
command and SERVER DISPLAY is OFF.  ckcpro.w.

Changed the command parser to perform completion when ESC or TAB is typed at
the end of a special abbreviation (CM_ABR) for a command, e.g. "c" for
"connect"; "s" for "send"; "g" or "ge" for "get"; "sp" or "spa" for "space".
ckucmd.c.

Changed the command parser question-mark-help giver to list the keyword, even
if it is invisible (CM_INV), if it is the only one that matches what was typed
so far AND if it is not a prefix of any other command (e.g. as ASK is for
ASKQ).  For example "spaw?" now displays "spawn" instead of nothing, but
"ask?" displays both "ask" and "askq".  Also "!?" displays "!" instead of
nothing, etc.  ckucmd.c.

Changed keyword tables to use CM_INV and CM_ABR consistently, so the above two
changes should work right everywhere.  ckuusr.c.

Changed SET PROMPT to no longer allow text to be enclosed in doublequotes --
braces should be used, as they are for all the other text-oriented commands,
to keep leading and/or trailing spaces.  ckuus3.c.

Changed SET DIAL <blah> commands that take character strings to allow enclosing
braces for including leading and/or trailing braces, like most other
text-oriented commands (e.g. ECHO, ASK, etc).  The inconsistency was pointed
out by Peter Kabal <[e-mail]>.  ckuus7.c.

Changed dial directory lookup to give precedence to an exact match, and
accept an abbreviation only when there is not an exact match.  ckuus6.c.

Fixed SHOW DIAL to show DIAL INIT-STRING and DIAL-COMMAND correctly for
V32-TELEBIT, V42-TELEBIT, etc.  ckudia.c.

Changed Telebit dialing code not to force PEP mode when KERMIT-SPOOF ON,
because this prevents fallback when other modem doesn't support PEP.  Bob
Larson <[e-mail]>.  ckudia.c.

Fixed SET ATTRIBUTES ALL { ON, OFF } to do what it was supposed to all along
-- turn all the attributes on or off, *without* affecting whether the
attribute mechanism itself was on or off.  Changed REMOTE SET ATTRIBUTES ALL
{ ON, OFF } to fail always, since there is no mechanism in the protocol for
this.  ckuus7.c.

Fixed TRANSMIT to strip high bits from echoed characters if PARITY not NONE
or COMMAND BYTESIZE not 8.  ckuus4.c.

Fixed SCRIPT command to echo, even if from a macro or take file, if SCRIPT
ECHO is ON and MACRO (or TAKE) ECHO is also ON.  ckuscr.c.

Fixed a minor bug in parsing of SET SERVER DISPLAY.  ckuus7.c.

Fixed help message for SET QUIET.  ckuus2.c.

Straightened out confusion with SET { RECEIVE, SEND } TIMEOUT.  It did not
work as advertised.  SET RECEIVE TIMEOUT tells the other Kermit what timeout
interval to use; it just puts the value in the negotiation string.  SET SEND
TIMEOUT overrides whatever the other Kermit says our timeout should be.  Like
it says in the Kermit book, etc.  Also fixed the parsing of SET RECEIVE
TIMEOUT to supply the correct defaults, and SET SEND TIMEOUT to be issued with
no value to cancel a previous SET SEND TIMEOUT.  When a SET SEND TIMEOUT
override is in effect, SHOW PROTOCOL marks it with an asterisk.  Also, added
the negotiated -- and possibly adjusted -- value to the SHOW PROTOCOL display
as "(used=xx)".  Also (suggested by Christian Hemsing), changed the timeout
adjustment routines to add 10 percent slop (min 2 secs), rather than a
constant 2 seconds, to allow for round-trip delay.  ckcmai.c, ckcfns.c,
ckcfn2.c, ckcpro.w, ckuus4.c, ckuus7.c.

Fixed stdout / stderr confusion in SET LINE error messages, and ASK and ASKQ
help messages, reported by Fuat Baran.  ckuus7.c.

Fixed fnparse(), the routine that parses a list of filenames sent in a GET
command to the C-Kermit server, to strip trailing whitespace to prevent space
at the end of a filename from being mistaken for another (null) filename.
Problem pointed out by Terry Kennedy, noticed when MS-DOS Kermit sent a GET
command to the VMS C-Kermit server, with the filespec containing trailing
spaces.  ckuusx.c.

Changed GET command to allow { braces } to include leading and/or trailing
spaces in the filespec sent to a server.  ckuusr.c, ckuus6.c.

Fixed SET { SEND, RECEIVE } PACKET-LENGTH to disallow negative lengths!
ckuus7.c.

Added some bulletproofing to the TAKE file reader.  Until now, it would go
into an infinite loop if it got a malloc() failure or tried to read from a
file that contained NUL characters.  Also, now we supply a terminator in case
the last line of a TAKE file lacks one.  ckuus5.c.

OS/2 16-bit version got too big.  Changed -Gt16 to -Gt8 to make some room
in the stack.  ckoker.mak.

------------------------------
5A(185) Tue Oct 27 18:14:49 1992

Thu Oct 15 -

Minor correction to getok() to allow for Digitel CCITT modem "VAL" response.
ckudia.c.

Correction to conres() for Sony NEWS, to restore Kanji mode correctly, from
Hirofumi Fujii.  ckutio.c.

Added fflush(stdout) to UNIX CONNECT command, to make sure entire CONNECT
message is displayed before connection begins.  From Michael Pins.  ckucon.c.

Mon Oct 19 -

Corrected the dnix5r3ansi makefile entry, plus a minor change to ckcdeb.h to
go along with it.  Bo Kullmar.

Some changes to CKVIOC.C and .H, suggested by Lee Tibbert, mostly
compiler-related.  The only functional change is to avoid asking the system
for an event flag number, but always using EFN 0.  Lee says this is safe, and
it speeds execution significantly.

Tue Oct 20 -

Corrected one more bug in the OS/2 C-Kermit VT102 emulator.  Darrel Hankerson
<[e-mail]> sent in a simple demonstration of how EVE screens
could still become messed up after insert-line operations followed by
cursor-ups.  Diagnosis: ESC M (reverse index) caused scrolling whenever the
cursor was *at or below* the top margin (i.e. the top line of the current
scrolling region).  Cure: It should scroll only when the cursor is *on* the
top margin line.  I also corrected a similar mistake for ESC D (Index).

Fri 23 Oct -

From Bob Larson <[e-mail]> -- UUCP lockfile fix for RS/6000 AIX 3.2
(ckutio.c), plus new makefile entry for same with curses support.

Added SET DIAL PREFIX.  This lets us insert PBX outside-line codes, etc,
independent of the phone number, so we don't have to include them in dialing
directory entries, and that way the same dialing directory entry can be used
from different locations.

Sun Oct 25 -

Found another bug related to retries of packet 0.  When reconstructing the
ACK to an S or I packet, and the block check type was not 1, the packet was
malformed (the block-check TYPE was being saved and restored, but not the
block-check LENGTH).  Fixed in resend() in ckcfn2.c.

Found and fixed the problem with the first packet received by VMS C-Kermit
after escaping back from a DEC TCP/IP (UCX) connection: the final read that
was posted during CONNECT mode was not being canceled properly.  cancio()
needed to use a channel number rather than a file descriptor in the UCX case.
Fixed in ckvtio.c.  Built and tested with UCX and MultiNet.

OS/2 fixes:
 . Make session logging work in the 16-bit version by using regular
   buffered writes, and by making logchar() a macro rather than a function.
 . Make session log "binary" so carriage returns are not doubled.
 . Hand-code sprintf() in-line to prevent a procedure calls in terminal
   emulation functions that were too deeply nested:
     ESC [ 6 n   -- cursor position report.
     ESC [ ? 6 n -- ditto
     ESC [ Pn x  -- request terminal parameters
 . Recoded handling of host-directed printing directives.  But it didn't help,
   we still crash with a stack overflow.  So disabled host-directed printing
   in the 16-bit version for now.
 16-bit version passes chkesc test for the first time, even with session
 logging on.  pcprint is now harmless.

Mon Oct 26 -

Fixed VMS version to display an appropriate herald, calculated at runtime,
saying whether it is VAX or AXP (Alpha), and OpenVMS (5.5 or later) vs
plain-old VMS (5.4 and earlier).  Adapted from code by Lee Tibbert.  CKVTIO.C.

More banging at OS/2 C-Kermit in hopes of getting printing to work on 16-bit
version (but no, it still crashes with stack overflow, so I ifdef'd it out
again).  Also, tried to prevent transparent print from printing the ESC [ 5 i
"printer on" sequence (but I can't test it).  ckocon.c.

Expanded OS/2 SET LINE (= SET PORT) table to include COM1-COM8.  ckuus7.c.

Another fix for SunLink X.25 from Stefaan Eeckels in Luxembourg.  This one is
said to cure the first-file-transfer-fails problem, and entirely removes the
big, ugly x25inl() routine.  ckutio.c, ckcnet.c.

Attempted to fix problem reported by Peter Mauzey for TELNET connection made
from C-Kermit under SunOS 4.1.2, which is more System-V-like that 4.1.1,
in which C-Kermit pops back to its prompt immediately upon the first CONNECT
command.  The fix is to have coninc() recover from interrupted system calls
(EINTR during a read) by retrying the read, as it already does in System V.
ckutio.c.  Later, Peter reported that this fixes the problem.

Tue Oct 27 -

Removed the artificial limit of 1920 on packet size for VMS C-Kermit.
Now the maximum packet length is 9024 and the default buffer size is
9065, just like other -DDYNAMIC versions.  9000-byte packets, 2 windows,
tested OK on VAX 3100/85 with UCX in both remote and local mode.  ckcker.h.

Added "OS/2 16-bit" and "OS/2 32-bit" to SHOW FEATURES for OS/2 version.
ckuus5.c.

Changed "Est. Time Remaining" to "Estimated Time Left" in fullscreen
file transfer display.  Looks better.  ckuusx.c.

Fixed bug with display of "Elapsed Time" in fullscreen file transfer display
on 16-bit architectures, reported by Peter Mauzey.  ckuusx.c.

Fixed a bug with display of Elapsed Time and Time Left for very large files.
Bo Kullmar reported that this happens on a Sun when the file size is
28,565,504.  Percent done is calculated as (chars-so-far * 100) / file-size.
When the numerator exceeds 2^31 it goes negative.  Fixed by rearranging the
expression (in such a way as to avoid divide overflows).  Tested by
transferring a 35-megabyte file Sun to Sun.  Worked OK.  ckuusx.c.

In testing with the 35MB file, I noticed a similar problem with the "Time
Left" display.  Previously it was calculated as:

 ((file_size - chars_so_far) * secs_so_far) / chars_so_far

but this too could overflow in the numerator for huge files.  The new
calculation avoids file sizes and byte counts, which can be arbitrarily long,
and uses only the seconds and the percent done, previously calculated, which
are smaller by orders of magnitude:

 (seconds_so_far * percent_left) / percent_done.

Tested with files of various sizes, 0 bytes to 35MB.  ckuusx.c.

Noticed during the huge file transfers that keyboard interruption does not
seem to work when sending a huge file.  But it seems to work consistently when
sending normal-size files.  Momemtum?  Or could be related to yesterday's fix
to the "double connect" problem?  (I don't think so -- Kermit is still reading
the interruption characters OK, but the protocol is not working.)

Installed a fix from Andy Fyfe <[e-mail]> for the problem reported
by Peter Mauzey where certain System V versions (3B2/300, 6300 PLUS) built
with CK_NEWTERM core dump after the first use of the fullscreen file transfer
display.  ckuusx.c

New makefile for 3B2/300 with curses: att3bxc, from Peter Mauzey.

Changed ATT 6300 makefile entry to not use CK_NEWTERM any more.  Peter Mauzey.

Fix for PING command for VMS WIN/TCP from James Sturdevant.  ckuusr.c.

Put back code from edit 183 for SunOS RTS/CTS flow control, but only for
SunOS 4.0, and then only if it is not being compiled with gcc.  For SunOS 4.1
and later, we keep the current code (POSIX calls).  This change was made
because the POSIX calls are not supported in SunOS 4.0.

Problem noticed by Andy Fyfe, who wanted to start Kermit file transfer from
pcomm via:

  kermit -Y -l 0 -r

where file descriptor 0 is assigned by pcomm to its dialout communication
device.  When started in this fashion, Kermit would drop DTR on the dialout
device because, according to Andy, "the ioctl call in concb to set the console
to CBREAK uses fd 0 which is also the modem tty line, and since the speed 0,
DTR is dropped."  So I added a check in concb() to not do anything if the
communications device file descriptor was passed as an argument to C-Kermit
(ttfdflg != 0) AND the file descriptor is 0, 1, or 2.  ckutio.c.

More last-minute fixing of huge-file displays after feedback from Bo Kullmar.
ckuusx.c.

Wed Oct 28 -

Fixes to Digitel modem support from Fernando Cabral.  ckudia.c.

Fix to concb() in UNIX version -- don't try to change console terminal modes
if we don't know what they are yet.  (Further work on the pcomm problem from
Andy Fyfe.)  ckutio.c.

Added -DDYNAMIC to MIPS makefile entry.  Tested on MIPS, problem previously
reported (^C^C out of packet mode leaves tty modes messed up) seem to have
been fixed.  Later, Peter Jones says it isn't fixed for him -- but the same
program image on the same computer works fine for me.

Added -DKANJI to IBM RS/6000 makefile entries.

Determined that the SunLink X.25 version will also run OK on a Sun that
doesn't have X.25 installed.  Attempts to open an X.25 connection result in
a good message, "Protocol not supported".

A few last-minute cleanups to SHOW NETWORK display (esp. for VMS).  ckuus4.c.

Thu Oct 29

Last-minute change to VMS version to fix labeled file transfer, from Terry
Kennedy.  ckvfio.c.

Received independent confirmation from Chris Green <[e-mail]>
in England that Stefaan Eeckels's X.25 fixes work.

------------------------------
5A(184) Sat Oct 10 19:53:00 1992

Installed new, edit 183-level, Atari ST sources and binaries from Bruce J.
Moore.  Also a new Commodore Amiga binary from Steve Walton (no source
changes necessary).

Two problems were reported with SET FLOW RTS/CTS on SUN computers.  First, the
code would not compile with GCC, and second, it didn't work if the modem was
not asserting CD.  Replaced the original code in tthflow() by a new version
sent in by Lon Willett at the University of Utah, <[e-mail]>,
that gets around the first problem by using POSIX calls rather than ioctl's,
which should work with both cc and gcc.  The second problem is caused by the
fact that SunOS will not output characters to a device that has CRTSCTS set
unless both CD and DSR are asserted by the device.  The new code, therefore,
skips setting CRTSCTS if CD is not present.  Compiles OK with both cc and gcc,
but not tested since I have no way to test it.  ckutio.c.

James Spath <[e-mail]> discovered that if you type \, then
Ctrl-H, then newline (CR or LF) at the prompt, the command parser goes into
an infinite loop, spewing out beeps.  Similar things happen when other control
characters are entered this way -- Ctrl-U, Ctrl-W, etc.  Fixed, but not
perfectly.  The infinite loops are eliminated, but the prompt does not
reappear automatically.  Still, it's an improvement.  ckucmd.c.

A more obvious change: The command parser was modified at the lowest level to
try to keep the command line looking right when the user enters quoted control
characters, question mark, space, or DEL -- the backslash is erased and
replaced by the quoted character.  If the quoted character is a control
character, it is written as "^".  If the quoted character is a printable
character other than space or question mark, the backslash is not removed.
This way, editing (DEL, BS, Ctrl-W, Ctrl-U) work as expected after entering
quoted special characters into the command line -- no more eating into the
prompt, wrong characters appearing/disappearing, etc.  Against my better
judgement, but seems to work OK.  Won't be pretty on hardcopy terminals
though, and the "^" business might surprise some people, but not more than the
current behavior surprises most others.  ckucmd.c.

Fixed the DIAL command to perform dial-directory lookups correctly, again, in
response to problems reported by Jay Rouman and Peter Kabal.  ckuus6.c.

Fixed yet another multiline GET command parser bug: if there was an error
in the local file specification, an error message was issued, but the old
prompt was never restored.  Reported by Nick Sayer <[e-mail]>.
ckuus6.c.

Changed UNIX version to allow opening /dev/null as an output file.  zchko()
and zchki() in ckufio.c, rcvfil() in ckcfns.c.

Added support for Solaris 2.0 on SUN, adapted from code sent in by Paul
Eggert, Twin Sun Inc, <[e-mail]>.  makefile, ckuver.h, ckuus5.c,
ckcnet.c, ckufio.c

Changed sunos41gcc makefile entry to properly define "CC2= gcc", to forego
gmake, and to include curses support.  Suggested by Joe Smith at U of PA,
<[e-mail]>.

A couple minor fixes for BSDI/386 from Michael Schmidt
<[e-mail]>.  ckufio.c, ckutio.c.

Minor changes to ckcnet.c and ckutio.c to eliminate compiler warnings
in 4.3 BSD from Michael Pins <[e-mail]>.

Reduced CONNECT command input buffer length (IBUFL) from 4K to 1.5K for
PDP-11 compilations.  Steven M Schultz <[e-mail]>.  ckucon.c.

Changed order of library search for "make sco3r22netc" to eliminate linker
complaint about "Symbol memset ... multiply defined".  From Fulvio Marino
<[e-mail]>.  makefile.

Sunday ---

Found that making KEEP the default for flow control is what busted file
transfer for VMS.  Fixed by (a) putting Xon/Xoff back as the default type
of flow control, and (b) changing the semantics of SET FLOW KEEP to restore
the flow-related characteristics of the device as they were found when the
device was first opened.  CKVTIO.C.

Did the same for UNIX in ckutio.c.  However, it's not quite perfect, since
SET FLOW KEEP only knows about Xon/Xoff, not hardware flow control.  So if
you SET FLOW KEEP *after* having opened the device with SET FLOW RTS/CTS in
effect, SET FLOW KEEP won't restore the original RTS/CTS flow control setting.
The same is true of SET FLOW NONE -- it doesn't know how to turn off hardware
flow control (it never did).

Installed patches to VMS C-Kermit file handling: Don't treat a file named "."
as an init file; fix improperly set FFB when receiving labeled file that did
not have the FFB on a record boundary; minor fgen() improvement.  From Bill
Hoelzer, Chuck McMichael, Bernd Onasch, via Terry Kennedy.  CKVFIO.C.

Added architecture-related #ifdefs to CKVCON.C from Lee Tibbert at DEC, for
OpenVMS and Alpha.

New command: SET DIAL DIAL-COMMAND [ <string> ], lets users override the
default modem-specific dial command, or actions taken by the initialization
string, etc.  For example, the default dial command for Hayes-like modems is
"ATD%s\13"; the user can force it to include a T for Tone dialing by giving
the command "SET DIAL DIAL-COMMAND ATDT%s\13".  Suggested by Kai Uwe Rommel
and others. ckuusr.h, ckuus7.c, ckuus4.c, ckudia.c, ckuus2.c, ckuker.nr.

Added +Obb584 to hpux70lfn makefile entries to give optimizer enough room
to work.  From Bo Kullmar.

Attempted to fix Telebit support: Added new code to determine Telebit model
more precisely (to differentiate among the many incompatible models that
report themselves as "965").  Leave S51 (speed) alone.  Don't change modem's
handling of CD and DTR.  Don't touch the speaker.  Don't touch its
error-correction fallback method.  Also, remove extraneous echoes from getok()
when DIAL DISPLAY is OFF.  Works OK on TrailBlazer and T3000 -- sent message
off to other Telebit aficionados so they can test it on other models.
ckudia.c.

Changed SET TRANSMIT LINEFEED default back to OFF (how did it ever get
changed?).  ckuusr.c.

Various patches to OS/2 version from Kai Uwe Rommel:
 . fix key mapping bugs
 . reduce disappearing-cursor syndrome
 . add 14400 bps for V.32bis modems
 . fix failure to open transaction log and similar files
 . fix \n vs \r\n problems for help screen
 . cleanups for upcoming emx/gcc 32-bit version

Sunday --

New ckustr.c for 2.11BSD version from Steven Schultz.

Another new command: SET DIAL MODEM-HANGUP { ON, OFF } to enable/disable the
"mdmhup" feature (hangup via ATH0, etc).  It has effect only on dialed serial
connections (i.e. local mode with specific modem type set).  This feature is
enabled by default unless NOMDMHUP was defined at compilation time.  If OFF,
serial-line hangups are done only by dropping DTR.  If ON, the modem-specific
escape sequence (e.g. <sec>+++<sec>) is sent to put the modem into command
mode, then the modem-specific hangup command (e.g. ATH0<CR>) is sent, the
result code is parsed, and if it fails, the DTR method is tried.  If the
modem-specific escape sequence and hangup command don't exist (as for the ROLM
CBX) or are not known (as for most of the non-Hayes-style modems), the DTR
method is used.  We're not supposed to be adding new commands at this late
stage, but Tom Kloos convinced me it's needed.  ckuusr.h, ckudia.c, ckuus2.c,
ckuus7.c, ck[cvo]con.c.

Corrections to Telebit support based on info from Tom Kloos.  Init string
starts with Ctrl-Q followed by several A's, based on Telebit's recommendation.
WorldBlazer *does* support PEP.  X1 raised to X2 for T1600, T3000, and
WorldBlazer.  Fallback modes made consistent for MNP and V.42 on older modems
-- in both cases, fallback all the way to "direct" is now allowed, rather than
direct for one and disconnect for the other.  Also, various adjustments to
eliminate most warnings from gcc -Wall ("'bleh' may be clobbered by longjmp",
etc).  ckudia.c.  Extensive documentation on Telebit support added to
ckcker.bwr.

Monday --

CLEAR command expanded to allow user to specify whether to clear the INPUT
command buffer, the communication device input buffer, or both:

  CLEAR [ { BOTH, DEVICE-BUFFER, INPUT-BUFFER } ]

We've needed this one for a long time, and it was so easy.  The default is
BOTH, for compatibility with previous edits.  ckuusr.c.

Fix from Kai Uwe Rommel for OS/2 CONNECT command, which could hang when
TERMINAL LOCKING-SHIFT was ON.  Involved separating input shift state from
output shift state (a good idea), plus exiting from the critical section
before continuing the big loop.  ckocon.c

Changed UNIX version to also separate input and output shift states.  ckucon.c.
Ditto for VMS.  ckvcon.c.

More Telebit fixes, based on advice from Greg Andrews at Telebit:

 . Use S54=3 rather than S54=2; the latter is not supported on some modems.
 . Add support for T1500.
 . Further refinement of which-modem-has-which-feature, esp. the Qblazer.
 . Allow more falling back.
 . Add support for various Telebit OEM versions.

Also fixed a bug in mdmhup() that prevented it from working with V32-TELEBIT
or V42-TELEBIT or PEP-TELEBIT or SLOW-TELEBIT.  ckudia.c.

Tuesday --

Fixed minor bug in parsing of SET TERMINAL LOCKING-SHIFT and NEWLINE-MODE
commands.  ckuus7.c

Reworked the Telebit code again, with debugging help from Fernando Cabral
in Brasilia, who discovered that some numeric result codes were not being
handled (now that X2 is used on new-model Telebits), and further advice
from Greg Andrews at Telebit about many matters.  ckudia.c.

Thursday --

Changed hangup string for Hayes-like modems from ATH0 to ATQ0H0, since
getok() depends on getting an OK or 0 response for this, and it won't come
if result codes are disabled.  ckudia.c.

Fixed SPAWN command in VMS version to handle Ctrl-C properly; problem reported
by Hunter Goatley, fixed by Terry Kennedy.  CKVFIO.C.

Fixed malloc() in VMS version of zmail() -- old one wasn't mallocing enough
space and so the ensuing sprintf() was writing over who-knows-what.  James
Sturdevant.  CKVFIO.C.

Finally fixed getok() (DIAL command's modem-command response reader) to work
right.  The problem was that nulls were getting into the response buffer,
preventing didweget() from finding anything after them, since it treats the
response-buffer string as null-terminated.  ckudia.c.

Monday --

Changed the PING command to say "multinet ping <host> /num=1" on VMS with TGV
MultiNet.  Suggested by Regis McEwen <[e-mail]>, confirmed by Ken
Adelman at TGV.  Should work for all releases of MultiNet.  ckuusr.c.

Wednesday --

Fixed a problem recently introduced into UNIX ttpkt() -- if FLOW was set to
any of the hardware options, I skipped setting raw mode (in Berkeley-based
UNIX implementations only).  Thanks to Tom Kloos for noticing it.  ckutio.c.

Thursday --

Added support for Motorola Delta UNIX System V/88 R40 to makefile, from Ron
Heiby <[e-mail]>.

Friday --

Added a new compile-time flag, SYSUTIMEH, meaning to #include <sys/utime.h>.
Apparently systems that follow the Motorola 88000 standard ("88Open") use the
structure specified there for setting file date/time, and if you don't include
this header file (and use the structure accordingly), files are created with
the "zero" date/time (generally Jan 1, 1970).  Needed, at least, for the
Motorola Delta UNIX System V/88 R32.  Suggested by Ron Heiby.  makefile,
ckufio.c, ckuins.doc, ckccfg.doc.

If UNIX C-Kermit was suspended during local-mode file transfer, and then
backgrounded, the file transfer would continue, and the file transfer display
would turn itself off.  But then if it was foregrounded again, the display
would not resume, and the interruption characters (A, X, Z, etc) would not
work.  All fixed now, at least for the SERIAL and CRT display types.  However,
switching between fore- and background still doesn't work well with the
FULLSCREEN (curses) display -- I think it's because curses is doing things
behind Kermit's back.  ckuusx.c.

Saturday --

Added MINIDIAL compilation option.  Removes support for all types of modems
except CCITT, HAYES, UNKNOWN, and NONE (DIRECT).  Cuts size of ckudia.o by
about half, and also reduces size of C-Kermit executable.  Mainly for benefit
of the PDP-11 (2.11 BSD) version.  ckudia.c, ckuus[35].c.

New CONNECT module for AOS/VS from Eugenia Harris.  Adds miscellaneous new
features from UNIX and VMS versions, plus bug fixes and buffering improvements.
ckdcon.c.

SHOW NETWORK, SET NETWORK, HELP SET NETWORK fixed for OS/2.

Sunday --

Improved support for CCITT V.25bis modems, based on information from Fernando
Cabral and further study of the standard.  Also, reformatted the dialing
messages, and increased consistency in deciding when they come out.  ckudia.c.
And fixed up the DIAL-related HELP messages.  ckuus2.c.

Fixed Help message for Mac version.  Changed Mac 0.99(xxx) version number to
agree with C-Kermit version number, so now it's 0.99(184).  ckcmai.c,
ckuus2.c, ckmkr2.r.

In testing this edit on HP-UX, I discovered that Friday's fix for the
local-mode file transfer display when fg'ing and bg'ing C-Kermit during
transfer... (take a breath) broke local-mode file transfer for HP-UX.  This
was because the conbgt() -- the process that checks to see if we're in the
background, uses a test that is not valid during file transfer, namely whether
SIGINT == SIG_IGN.  This problem didn't show up on other System-V based
systems (SVR4, Aviion, RS/6000), but on HP-UX, the getpgrp() call always seems
to return -1, as if it had been called in error, so the process-group test
always fails, which makes us fall back to the signal test.  This was somewhat
(not very) reliable before, but now that we are calling conbgt() during file
transfer, SIGINT will often be set to SIG_IGN, so now it's *really*
unreliable.  Since conbgt() is used only in UNIX C-Kermit, the cure was fairly
simple -- add a new flag as an argument to conbgt().  If the flag is 1, skip
the signal test; if 0, do it as before.  Internal (pre-existing) calls to
conbgt(), which occurred from conint() and sysinit() in ckutio.c, now call
conbgt(0).  The new call that was added to the screen() function in ckuusx.c
is now conbgt(1).  Also, screen() was changed to not to call conbgt at all
unless C-Kermit was in local mode.

Got a new ckubs2.mak from Steven Schultz, many changes.  Now that ckudia.c
has started blowing up the compiler, it is compiled separately without
optimization.

Added -DMINIDIAL to ckubs2.mak and restored -O for ckudia.c.  Still blows up
the optimizer (it didn't make ckudia.c any less complicated, only smaller),
so I put back the separate compilation for ckudia.c without -O.

Note: the local RS/6000 also chokes on ckudia.c, but it is not clear whether
the compiler itself is choking, or the system is low on some kind of resource
like swap space (the message is just "out of space").  However, compiling
ckudia.c by hand without -O worked ok.  There's no obvious way to change the
makefile to do this automatically.

Even with MINIDIAL, edit 184 got too big (again) for 2.11 BSD, probably
because of additions to ckutio.c.  Swapped modules among segments, and reduced
and/or malloc'd the size of some of the static buffers in ckcfn3.c.  Still too
big.  Went thru all the modules remaining in the root segment and tried to
squeeze out bits of space.  Still too big.  Finally ... ftp'd the whole mess
again, started over ...  It works.  Phew!  ckubs2.mak, cku[tf]io.c,
ckcfn[s3].c.

Monday --

Fixed a bug with command editing when echoing is off, as in the ASKQ
command.  Previously, editing would delete back into the prompt.  No more.
ckucmd.c (but "?" doesn't work in ASKQ any more...) (It didn't before, either)

Wed --

Problems observed during DIAL on VMS.  The hangup operation renders the serial
device useless until after it is closed and reopened.  At the suggestion of
Lee Tibbert at DEC, added a sleep() to tthang(), which partially cured the
problem: it made the HANGUP command work OK, but DIAL still didn't work
unless DIAL HANGUP was OFF.  Added a few more minor flow-control related fixes
to ttbin(), but they made no difference.  Then I realized that tthang() was
being called by ckudia.c before ttkpt(), so I rearranged the startup code in
ckudia.c to be in sensible order: open the device, call ttpkt() on it, then
try to hangup, then try to dial.  But it made no difference.  Another bad
problem, as yet unresolved: After a DIAL failure, the next attempt to call
ttbin() to put the device in binary mode always hangs in the sys$qiow() call.

Wed --

Raised VMS C-Kermit's sleep in tthang() from 1 to 3 seconds, based on
experiments and observations of modem lights.  It's ugly, but it fixes the
problems noted above, at least locally.  ckvtio.c

Changed UNIX ttpkt() to access the global flow variable rather than rely
on its argument for setting flow control, as in VMS.  ckutio.c.

Changed "Time Remaining" in fullscreen file transfer display to
"Est. Time Remaining".  ckuusx.c.

Changed protocol module to emit a CRLF after receiving a short-form reply
to a REMOTE command (such as REMODE CD).

Attempted to cure several minor instances of prompt-stomping reported by
Christian Hemsing.  ckcpro.w, ckuusx.c.

Friday --

Thanks to reports from Kenneth W Cochran <[e-mail]>, discovered
that \F...() function calls often failed to work when spaces were used to
separate their arguments.  Fixed in fneval() in ckuus4.c.  Now leading and
trailing spaces are stripped from all function arguments -- EXCEPT the first
argument of \Frepeat(string,number) -- before evaluation.  The exception
allows \Frepeat to emit a given number of spaces, e.g. "\Frepeat( ,20)".
Also, correct a problem with \Frepeat() -- it didn't explicitly terminate
its result with a NUL.  ckuusr.c.

Added code from Stefaan Eeckels <[e-mail]>, Eurostate (CEC),
Luxembourg, to the lowest-level communications input reader, myfillbuf(), to
work for SunLink X.25 connections.  It is called only if C-Kermit is built for
SunLink X.25, and only if an X.25 connection is active.  This should allow
INPUT, SCRIPT, and similar commands to work on X.25 connections.  ckutio.c.

Monday Sept 28 --

Added support for Interactive UNIX System V/386 R3.2 from Richard C Gration
<[e-mail]>, which allows for job control.  Includes a
new compile-time option, SVR3JC, for use on any System-V R3 based-system that
supports job control.  ckutio.c, ckuus5.c, ckuver.h, makefile, ckuins.doc,
ckccfg.doc.

Found that blank-stripping of function arguments could cause core dump.
Reported by Kenneth Cochran.  Cause: pointers returned by malloc() were being
modified, so subsequent free() operations failed.  Cure: strip arguments
before pointing malloc'd pointers at them.  ckuus4.c.

Thu, Oct 8 --

From Lee Tibbert at DEC:
 . Don't #define DYNAMIC for VMS in ckcdeb.h if it is already defined.
 . Several variables unconditionally declared external in ckuus4.c were
   used only in UNIX.  Put their declarations in #ifdef UNIX.
 . Fixed a small "strictness" problem in ckwart.c.
 . New ckvtio.c, ckvfio.c.
 . Completely new and rewritten CKVKER.COM, supporting Alpha, OpenVMS,
   and DEC TCP/IP (aka UCX).

From Hunter Goatley -- added code to allocate the communication device in
ckvtio.c.  This is so people with SHARE privilege can't interfere with someone
else already using the device.

From Peter Jones -- added a makefile entry for HP-UX 8.0.

In UNIX version: Removed SIGHUP trap in conint() in ckutio.c.  Let system
clean up after Kermit if the line hangs up.  Thanks to Phil Beck of DEC for
reporting the problem.

In UNIX version: Initialize process groups to 0 in conbgt(), because
apparently the ioctl(1, TIOCGPGRP, &foo) call only writes into the lower 16
bits of the word, so if the word is not init'd to 0, the upper half will be
garbage, and comparisons will fail.  This happens in SCO UNIX 3.2.2.  Thanks
to Walter Mecky in Germany.  Also, added -DPID_T=pid_t to some SCO entries in
the makefile that lacked this definition.

In function inibufs() in ckcfn3.c, when allocating send-buffer info
structures, initialize the packet address pointers to NULL to prevent core
dumps when referring to unallocated packets, e.g. when debugging turned on and
entering server mode.  Reported by Christian Hemsing.

Added fullscreen file transfer display support for OS-9, using MYCURSES path.
From Christian Hemsing.  Many ck9*.* files changed, plus minor changes to
ckuus7.c and ckuusx.c.

Another one from Christian Hemsing: C-Kermit was improperly attempting to
decode incoming data packets when reception of a file had been interrupted
before the new file was opened, and then call zmchout() to write the data
to the not-yet opened file, but zmchout's buffer pointer is initialized by
the file-opening routine, so we got bus errors, core dumps, etc.  Fixed by
having decode() return if one of the interruption flags is set *and* its
output function is putfil.  ckcfns.c.

The following bit in ckudia.c:

        c2 = ttinc(0);        /* Read a character, blocking */
        if (c2 < 1)        /* Ignore NULs and errors */
          continue;        /* (Timeout will handle errors) */

would have unintended consequences when ttinc() returned an 8-bit character;
the sign would be extended, and the "continue;" would be executed.  Changed
to:

        c2 = ttinc(0);        /* Read a character, blocking */
        if (c2 == 0 || c2 == -1) /* Ignore NULs and errors */
          continue;        /* (Timeout will handle errors) */

Thanks to Fernando Cabral in Brazil.

Sat Oct 10 --

New Data General AOS/VS files from Eugenia Harris at DG, plus a change to
ckcfn2.c that allows AOS/VS C-Kermit to use the long-form ttinl() call.

Fernando Cabral's CCITT modem is so different from a real CCITT modem that I
added a new modem type for it: Digitel DT-22 ("set modem digitel"), and
restored CCITT modem type ("set modem ccitt") to V.25bis purity.  ckudia.c.

Changed TRANSMIT to apply fmask (SET FILE BYTESIZE) mask to file characters
before processing them.

Sun Oct 11 --

More allowances for using DIAL with a TELNET modem server: Don't execute the
speed-changing code if we have a network connection to the modem, and don't
use "modem hangup" either (attempting to send the hangup string to a network
modem after the network connection was broken was a bad idea -- unfortunately,
there's no good way to tell if the connection is open).  Also, added code to
handle TELNET negotiation options during the DIAL process.

Changed CONNECT command not to call mdmhup() after it got an i/o error when
reading from the communication device.  Also, changed CONNECT to be less
confused about modem-type vs network-type when calling ttopen().  Makes a
difference after a network-modem-server connection is broken and a new CONNECT
command is given.  ckucon.c, ckvcon.c, ckocon.c.

Reversed the meaning of SET DIAL SPEED-MATCHING, at the reasonable urging of
Fernando Cabral, who thought that ON should mean that Kermit attempts to
match the speed reported by the modem.  ckudia.c, ckuus2.c, ckuus7.c.

Hunted down the OS/2 C-Kermit VT102 emulator bug in which the "vi" "p"
(open for insert) command did not work right, which was also visible in
in the VMS EVE editor.  The problem was that ESC 8 (DECRC) was coded to
"unsave" the saved cursor position and attributes as well as restore them,
whereas a real VT102 lets the saved items be restored more than once.
Seems OK -- vi session log plays OK now, EVE seems to work OK, and we still
pass "vttest".  ckocon.c.

Fixed a bug reported by Tom De Bellis: If OS/2 C-Kermit is connected to
a modem that is turned off, and you SET CARRIER OFF, then HANGUP (or
<esc-char>H during CONNECT) hangs the program.  Diagnosis: C-Kermit gets stuck
in the mdmhup() routine.  SET DIAL MODEM-HANGUP makes the problem go away.
Workaround: change mdmhup() -- for OS/2 only -- to fail if carrier is not
present.  ckudia.c.  Real cure (I don't know how) -- set the modes in the
serial device driver to make it ignore all modem signals (including DSR and
CTS) when CARRIER is set to OFF, if that is possible.

New binaries based on today's version for various UNIXes, plus (from Bruce J
Moore) the Atari ST.  Locally, built ok on Sun, VAX/VMS, NeXT, OS/2, RS/6000.

Monday Oct 12 --

Removed a lot of superfluous, test-oriented sunos41xx entries from the
makefile.

Discovered that I broke the TRANSMIT command a couple days ago by applying
the file bytesize mask before checking for the eof return code.  Fixed in
ckuus4.c.

A couple more updates for OS-9 from Christian Hemsing.

Changed SET LINE command for OS/2 to accept 1..4 and synonyms for COM1..COM4,
rather than treating them as file handles.  Preserved the file handle business
by allowing "_" (underscore) as a prefix, e.g. "SET LINE _4" -- in which case
C-Kermit simply strips the prefix (however, this last bit doesn't seem to
work -- "set port _4" just says "doesn't match keyword").  ckuus7.c.

New makefile entry for SunOS 5.1 == Solaris 2.1 (Alpha 3.2) from Patrick Wolfe
<[e-mail]>.

Tuesday --

Fixes to OS/2 CONNECT-mode hangup procedure from Kai Uwe Rommel.  ckocon.c.

Installed DEC TCP/IP support in the VMS version, mostly from Lee Tibbert at
DEC.  This was based on edit 181, and required some rather careful
reconciliation with the current edit.  Cleaned up some of the conditional
compilation -- now all the items that DEC, Wollongong, and TGV have in common
are lumped together under VMSTCPIP.  Also another updated version of
CKVKER.COM, the build procedure, from Lee.  Also a new CKVKER.MAK from James
Sturdevant, that follows CKVKER.COM.  I updated all of these to include a
new header file, CKVIOC.H, and a new module, CKVIOC.C -- ioctl() simulation
for DEC TCP/IP only.

Lee, as well as Bill Patterson (who was also working on this), complained that
the first file transfer initiated from VMS C-Kermit after it had made a TCP/IP
connection over UCX didn't work.  I also received a similar complaint from
Chris Green in England about SunLink X.25 connections.  In the VMS case, this
was traced to VMS C-Kermit invariably losing the first few characters of the
first ACK to its S or I packet.  This most likely has something to do with
netflui() and/or nettchk().  The DEC TCP/IP version of nettchk() always
returned 0, which was wrong -- I fixed it to return the number of characters
in the internal buffer (ttibn).  But that didn't do it.  However, this
revealed a flaw in the input() routine in system-independent protocol code:
the Kermit on the other end, having sent its ACK for packet 0, is now awaiting
packet 1.  It doesn't come, so it sends a NAK for packet 1.  Until now,
C-Kermit improperly treated this as equivalent to an ACK for packet 0.  But S
and I packets are a special case, because their data fields contain crucial
negotiation information.  So I (a) fixed a stupid bug in input() in which it
calculated the previous packet number incorrectly, and (b) made it treat
missing ACKs to S or I packets specially -- retransmitting the S or I packet,
rather than going ahead and transmitting the next packet without knowing what
parameters had been agreed to.  This works around the problem by handling the
missing ACK correctly, but it's not the real cure -- why are the characters
chopped off in the first place?  nettchk() and netflui() still need some work.
ckcfn2.c.

A strange discovery: When Kermit is built with DEC TCP/IP, it works on a
system that has TGV MultiNet TCP/IP!  Terminal connection and file transfer
both work...  (Later, Terry says that MultiNet has a UCX-emulation mode.)

Wed Oct 14 --

Rewrote CKVKER.COM again, to allow a consistent way of selecting (or disabling)
network support.  CKVKER.COM, CKVKER.UPD.

Fiddled with DEC TCP/IP nettchk() in CKCNET.C.  Enabled the use of the
FIONREAD ioctl, which seems to work just fine.  However, the FIONBIO ioctl
doesn't seem to work all the time, but -- as far as I can tell -- it's not
needed for DEC TCP/IP.  It was used in nettchk() only so the MultiNet code
could tell if a connection dropped, but apparently the DEC code can, so that
part of nettchk() is #ifdef'd out for DEC TCP/IP.  Now that nettchk() works,
CONNECT goes fast, and file transfer seems to be OK (it's hard to tell because
the network is badly clogged today).  Goes fast with localhost.  But we still
have the problem in which the first incoming packet is sometimes beheaded.
Changed sipkt() in ckcfn2.c to skip the ttflui() call if ttchk() says no
characters are waiting, since this seemed to be the sticking point before, but
is not a total cure.

------------------------------
5A(183) Sun Aug 23 16:04:02 1992

OS/2

A new version of C-Kermit for OS/2, based on edit 182, from Kai Uwe Rommel at
the Technical University of Munich, Germany.  His notes:

  - "curses" support for OS/2, uses the MYCURSES VMS code. This is far
    fast enough for OS/2, which has a very fast ANSI interpreter.
  - signal() return value fixed.
  - Different 8.3 and HPFS file name (esp. backup file name) handling
    with detection/translation of invalid FAT (8.3) names and
    transparent names on HPFS.
  - Preliminary changes for 32-bit compilers (not working yet, but
    pretty close, I think). I will finish that next.
  - Additional file transfer progress display. "Poor man's" curses
    display, i.e. only one line of incremented counters. Enabled by
    "SET FILE DISPLAY SIMPLE". Uses only CR and overwriting.
  - Network support for DECnet LAT for OS/2. New module ckonet.c where
    other networks support can go into too (TCP/IP). New header
    ckolat.h.
  - Hooks for LAN Manager named pipe network support (has to be added yet).
  - Fixed terminal-emulator/command-mode console mode switching (ttres()
    calls) and interrupt handling (SIGINT, SIGBREAK).
  - Added ESC sequence detection and protection from character set
    translation for OS/2 CONNECT mode.
  - Priority adjustments for communication threads (should make transfer
    in background more reliable and reduce lost characters).
  - New ckoker.mak with already added targets for 32-bit compiles (not
    working yet).
  - More correct settings for predefined system-dependent variables
    (e.g. \v(host) etc.).
  - Made command line option handling (open file descriptors) conforming
    to Unix version.
  - Fixed maximum dial timeout (see my comment in ckudia.c).
  - Added two fields for raw througput for STATISTICS display.
  - Made default tty CON, although that makes no sense for OS/2, but
    specifying any of the COMx ports causes error messages for some
    people who have their mouse on that port.
  - Added dummy "EXTPROC" command. This allows selfrunning
    Kermit-scripts, just like #!kermit under Unix by specifying
    "EXTPROC CKERMIT" as the first line in a .CMD batch file.
  - Added a few missing prototypes for recent additions.
  - Added More? prompting for OS/2.
  - Prototype for OS/2 zchdsk again changed to int argument instead char
    (some compilers warn in this case).
  - Fixed a few int/long mismatches.
  - Control-Space could not be distinguished from normal Space.  This
    annoys remote Emacs users. This does now work as expected.
  - The +-*/ and ENTER keys on the PC numeric keypad could also not be
    distinguished from their normal counterparts. Also fixed.
  - No key could be set to send the NUL character (for Emacs users).
    My current solution is somewhat ugly but I have no other idea.

  Planned features:

  - 32-bit gcc version.
  - LAN Manager named pipe network support.
  - TCP/IP (I don't have access to TCP/IP yet). Far away.
  - Auto parity detection.
  - Keyboard timeout emulation.
  - Kanji support (?). Far away.
  - Enhance terminal emulation (full VT-102, VT-320 ?).
  - Tektronix emulation (?). Far away.

Over the weekend, we sent changes and files back and forth like mad, so
now the OS/2 version is totally up to date with edit 183.

Later, I installed OS/2 on my PC as well as Microsoft C 6.00 SDK.  Fixed
various bugs in ckocon.c, made some cosmetic changes, added Kanji file
transfer support, added Alt-key command equivalents for many of the Ctrl-]*
CONNECT-mode escapes, and then added SET TERMINAL { ARROW-KEYS, KEYPAD-MODE,
TYPE, WRAP } for OS/2.  Also discovered that there was no code at all to make
numeric keypad mode work, so I added it.  ckuus[457].c, ckuusr.h, ckocon.c.

Still later, Kai Uwe took my changes back and added more of his own:

- Some debugging support in ckcdeb.h for IBM C (helped me find the
  maclvl bug).

- Changed prototype and added defines for OS/2 in ckcdeb.h.

- Changed text to tell the difference between modem and DTR hangup
  in ckudia.c.

- Fixed home directory in ckufio.c, for OS/2, it depends on sysinit()
  in ckotio.c.

- Added (untested) support for 76800 and 115200 baud for OS/2 2.0. I
  can't test it since none of my COM drivers supports it. Perhaps it
  is only supported on IBM's Model 90/95 with their DMAing COM ports.
  However, it is documented and should work.

- Fixed SET KEY bug with single characters (caused \-1) in ckuus3.c.

- Fixed maclvl bug in ckuus5.c in xwords().

- Fixed off-by-one error in MYCURSES code for fullscreen file transfer
  display.

- Changed stack size and data allocation in makefile for MS C.

- Changed some IBM C options in makefile and added debug target for it.

- Fixed (thanks to Michael Godfrey) some bugs for CONNECT mode and
  IBM C.

- Increased scrollback buffer to 240 lines. Added support for linewise
  scrolling with Ctrl-PageUp/Down and "goto top" with Home. Note: 240
  is the upper limit for the 16-bit version, because that requires
  nearly a 64k buffer. Increasing it further would require large
  changes. For the 32-bit version, it could simply be increased
  further.

- Fixed XON/XOFF handshaking. It was really buggy and seems to work
  fine now with my V.32/V.42bis modem at 19200 DTE speed.

- Added RTS/CTS handshaking. I have learned a lot about this in OS/2
  while implementing it! BTW, when it is turned off, RTS is still kept
  on, in case some modem requires it.

- The handshaking support is (from my point of view) now clean and
  working.

- Added CARRIER detection (i.e. implementation for SET CARRIER).
  Requires SET CARRIER OFF, of course, when the SCRIPT or CONNECT
  commands are used to talk to the modem before dialing and
  establishing a connection.

- To make that useful, keyboard timeout was implemented, so CONNECT
  closes automatically when carrier is lost (and SET CARRIER is not
  OFF).

- Minor changes to some status line texts.

- Minor adjustment to cursor on/off optimization.

- Added some messages for reason of closing CONNECT.

- Fixed screen blinking problem for fullscreen usage and some bright
  colors.

- Fixed some return values from conect().

- Made DECnet network support compilable with 32-bit IBM C. Completely
  untested, don't have that at home. I will be able to test this in
  about two weeks only. (However, continues to work as ever with MS C,
  i.e. 16-bit version).

- Fixed DTR hangup.

- Added Codepage recognition for FILE CHARACTER-SET default.

- Added "home" directory, where C-Kermit was loaded from.

- Fixed keyboard interrupts, i.e. added SIGBREAK too.

- Fixed ttpkt() and ttvt().

- Fixed BREAK sending functions according to OS/2 docs.

- Added separate \127 scan code for backspace key and \639 for
  Control-Backspace. Keypad keys (including Enter) also have separate
  scan codes (as before already).

- Added alarm() implementation for IBM C and rewrote the MS C version
  for efficiency. Required for DIAL timeout, SCRIPT timeout and the
  mentioned keyboard timeout.

- Added popen() and pclose() for IBM C, but still untested.

Bugs remaining on my list:

- Some other keys in CONNECT mode, Help/Hangup etc.

- Any kind of printing??? PrintScreen?? Print commands?

- Tabulators?

- READ / OPEN don't work.

- Auto parity detection not implemented. I don't think that this is
  really important. Difficult.

- Network support for TCP/IP and named pipes could be added.

- VT-102: some bugs?

Later, changed sysinit() in ckotio.c to add terminator to startup directory
so \v(home) would work right, e.g. \v(home)ckermit.ini.

Still later, fixed two more bugs: (1) the READ command did not work right
(fixed by opening the READ file in "rb" mode in ckufio.c), and (2) handling
of tabs by the terminal emulator was badly messed up (fixed in ckocon.c).


MACINTOSH

From Paul Placeway <[e-mail]>:

I recently got a high speed modem (a Digicom Scout Plus v.32bis/v.42bis;
inexpensive and works well), which motivated me to look just a bit harder
at the screen drawing code, speed things up a bit, and fix a few bugs.

This version:
    Fixes the problem that caused Kermit to bomb while drawing to a
    window while the user tries to scroll back.

    Fixes a couple of long-standing bugs in the insert and delete
    multiple characters code.

    Fixes a few problems with the jump-scroll logic and code.

    Implements double-width characters the right way internally,
    including correct behavior for copy and paste.

    Can keep up catting /etc/termcap, running on a Mac IIcx with a
    mono full-page display, running a 67 line window in Courier
    12pt, connecting through a v.32bis/v.42bis modem connection
    with the terminal set at 56 kpbs.

    Does file transfers to the Mac a bit faster by doing
    background file cache flushes every couple of Ks, which keeps
    the Mac from saving it all up and doing it all at once.

    Fixes the transfer thermometer when sending from the Mac, and
    makes this code less incestuous with the ckc* file management
    code.

When built with the final edit 183 sources, the file transfer display was
messed up again: no filename, no as-name, no file size, no percent done, no
thermometer.  The display is OK when receiving files.  The code is in
ckmscr.c -- I took a look at it, but couldn't see anything obviously wrong.
So I put back the earlier version of ckmscr.c (from edit 182) and everything
is fine (the only reason Paul changed ckmscr.c was to work around bugs in
the mainline code, bugs which I had already fixed behind his back).

UNIX

Added support for 4.4BSD-Alpha, whose terminal driver is a wonder to behold: a
mixture of System V, POSIX, and 4.3BSD.  Compiles cleanly and runs OK on a
68040 machine, but I had no way to test if SET LINE or DIAL work.  Remote-mode
file transfer is OK, TELNET works fine.  Includes (untested) SET FLOW RTS/CTS.
Mostly ckutio.c.

The alleged controllability of RTS/CTS via ioctl() in System V R4/386 appears
to be a hoax.  Tested on Dell UNIX, found to do nothing, and verified with
Dell engineers -- that's how it comes from USL, so probably all SVR4/386
implementations lack this capability, despite the existence of <termiox.h> and
the related system calls.

Reshuffled overlays for 2.11BSD after the DIAL command got too big.
Still works!  And we still have about 2K left in the last overlay.

On the AT&T 6300 and 3B1, it was found that using the curses display made
console i/o slow and jerky thereafter.  Turns out that curses (at least on
these systems) makes stdout block-buffered.  Andy Fyfe
<[e-mail]> discovered this and sent in code that can be
included (on System V systems) by defining CK_NEWTERM, which substitutes
newterm() for initscr(), and gives a duplicated file descriptor to curses, so
when we come back from curses, it hasn't messed with stdout.  Andy suggests
that CK_NEWTERM might be a good default for all System-V based implementations.

Added a makefile entry for AT&T 6300 UNIX PC with curses and shared library,
called sys3upcshcc.  Peter Mauzey.

The SUN version, during CONNECT mode on a serial line, was no longer popping
back to the prompt when the remote hung up.  It seems the new buffered CONNECT
code was not checking the return code from ttxin().  It also seems ttxin()
was not returning a failure code in the myread() case.  Both of these problems
were corrected, but we still don't pop back.

Aha, discovered that edit 182, in commenting out all the directory-related
stuff from ckutio.c, I ruined the creation of the symbol BSD42, which in turn
is based on MAXNAMLEN, which comes from a directory-related header file, and
this, in turn, caused MYREAD to not be defined.  Uncommented these includes.
ckutio.c.

The close(open()) business in ttopen() neglected to set O_NDELAY (as it does
in tthang()), causing Kermit to hang on the open call (on some systems).
Diagnosis and cure by Dave Johnson, Gradient Technologies <[e-mail]>.

Made some changes in ttoc() to try to eliminate the core dumps that were
occurring on some systems (which I can't reproduce), particularly during
network connections.  Also added debug() calls everywhere in ckutio.c that
calls alarm() or signal(SIGALRM,xxx).  ckutio.c.

Fixed up the sunos41gcc entry in the makefile.  The resulting wermit
executable is 42K smaller than with SUN cc.  It doesn't seem to work if curses
is added, several routines from the termcap library can't be found (this is
apparently size-related).

In UNIX C-Kermit, I now enable hardware flow control during CONNECT (ttvt) as
well as file transfer (ttpkt).  No reason not to, right?  I moved all
hardware-flow-control-related code into a new internal routine, tthflow(), in
ckutio.c.  Also, enabled RTS/CTS for SunOS 4.1 (normal BSD make) by doing a
System V call (in tthflow), and defining CK_RTSCTS for SunOS 4.1 in ckcdeb.h.
Also, merged the UTEK hardflow() routine into tthflow(), and fixed the UTEK
code to use DTR/CTS handshaking once again (I think I must have broken it a
few edits ago).

Removed the horrible hack by which SET FLOW RTS/CTS was implemented on the
NeXT because it only worked if the SET FLOW command was given *before* the
SET LINE command.  ckuus7.c, ckcdeb.h.

Added a bunch of #undef's to the SunOS System V make to get rid of the
"duplicate definition" errors caused by several Sun header files defining the
same symbols (e.g. termio.h and ioctl.h).  ckutio.c.

Added a makefile entry for Motorola MVME147 System V/68 R3 V5.1 from
Eigil Krogh Sorensen <[e-mail]>.

New makefile entry and support for 386BSD (Jolix) from Hellmuth Michaelis
<[e-mail]>, Hanseatischer Computerservice GmbH, Hamburg.

New makefile entry for ICL DRS6000 DRS/NX from Phil Race <[e-mail]>
at ICL.

VAX/VMS

Fix for fencepost error in CKVFIO.C: when uploading a text file to VMS, and
a line break occurs exactly at the end of the 32K output buffer, a carriage
return is lost.  From James Harvey at Indiana/Purdue University.

Defined IFDEBUG for VMS.  Adds less than 5K to the .EXE file, and speeds up
file transfer by anywhere from 6% to 31% (according to my measurements).
Also, this seems to have fixed the UCX problem (in which it wasn't possible to
send packets longer than 76 to C-K/VMS if you were accessing the VAX via
TELNET and it was running UCX or CMU/Tek TCP/IP).  Later, it turns out that
it fixed the UCX problem only for people coming in over relatively low-speed
WAN connections, but not for high-speed LAN connections.  Fundamental changes
are needed.  ckvker.mak, ckvker.mms, ckvker.com.

VMS Makefile now reads C compiler options from logical name LOCALOPTS, so now
you don't have to edit the makefile to alter the compilation options.  Terry
Kennedy.

Made KANJI support the default for VMS C-Kermit.  Only adds a few K and
doesn't hurt anything.  Without this, Japanese sites that don't have C
compilers would have no way to configure Kanji support.  ckvker.{mak,com,mms}.

Removed current directory from VMS init-file search list.

DATA GENERAL AOS/VS

For the first time in the C-Kermit 5A development cycle, we have a Data
General AOS/VS version, thanks to Eugenia Harris of Data General, complete
with TCP/IP support.


OTHER UPDATED VERSIONS

Atari ST, from Bruce J Moore.  Now supports tilde notation in filenames,
but only for "self", not other users.  Environment variable HOME must be
present.  SET FILE COLLISION UPDATE bugs fixed.

Amiga... ???

OS-9: Another new ck9fio.c from Christian Hemsing.  Chris's notes: When a
remote server command created more than one child process and the command was
cancelled prematurely, zclosf() only killed the forked process even though a
whole process tree might have been created in the meantime by the remote
command.  Then several processes were simply left over (under OS-9).  They
didn't do any harm except using memory, but would have to be killed by hand
eventually.  Now Kermit cleans up all processes.

Also, a fix to the OS-9 CONNECT command, relating to flow control upon
escaping back to prompt.  Plus new versions of the build files, ck9ker.mak
and ck9ker.gcc.

FILE TRANSFER DISPLAY

Adapted Kai Uwe's "simple" display to take up a bit less screen space (and
memory) and renamed it to "crt", since it works on any CRT, and the word
"simple" might upset some people.  Made a lot of adjustments to handle odd
cases like zero-length files, unknown-length files, files whose sizes change
when you transfer them (e.g. text files between VMS and UNIX), etc etc, to
prevent bizarre-looking transfer rates and percents (like 125% and still
going, or 37% and complete).  Later, even more refinements from Kai Uwe.
ckuusx.c.

Changed the serial display to print a dot for every K transferred, rather
than for every 4 packets.  This involved only slightly more arithmetic,
and it gives a much better indication of how the transfer is progressing.
The number of dots shown for a particular file is now always the same, no
matter what the packet size.  ckuusx.c.

Simplified and consolidated the "crt" and "serial" display code, so now
hopefully it's easier to understand and modify.  ckuusx.c.

Fulvio Marino noticed that during multifile transfers, the "remaining time"
shown in the fullscreen display was pretty strange for files after the first
one.  Diagnosis: the elapsed time returned by gtimer() was based on the entire
file group, not the current file.  Cure: keep track of when the current file
started.  ckcfns.c, ckuusx.c.

Moved "Time remaining" in fullscreen display to its own field for increased
legibility.  Made the time remaining, percent done, and several other fields
update themselves less frequently.  At end of transfer, show total elapsed
time.  Various other bits of tuning to the fullscreen display.  (At least) one
tiny problem remains: System V curses endwin() always seems to put the cursor
at the bottom of the screen, no matter where Kermit leaves it, so when the
prompt is issued after a file transfer, the display scrolls up one line -- a
minor annoyance.  With the BSD curses library, the display stays put.
ckuusx.c.

Fixed the "double error screen" problem, in which an E packet caused the
curses screen to be closed, and then reopened, usually so fast you couldn't
see the error message.  Also, improved the output-file opening code to show
the actual system error string in the error message, but only for BSD4 and
ATTSV, since I don't know which other versions support errno and sys_errlist[].
Several modules.

Added code from Andy Fyfe to show seconds remaining instead of CPS in
CRT display, but did not activate it.  It's within #ifdefs that aren't turned
on.

DIALING AND COMMUNICATIONS

Added a new flow-control option, KEEP, and made it the default.  KEEP
means don't touch or change flow control.  This lets users set flow control
on the login terminal or SET LINE device outside of Kermit, and lets Kermit
use it, whatever it is.  Previously, Kermit would always try to accomplish the
current FLOW-CONTROL setting (default Xon/Xoff) whenever you CONNECTed or
entered packet mode.  ckcdeb.h, ckuus3.c, ckuus4.c, ck[uvwo]tio.c.

Added support for CCITT V.25bis modem dialing: SET MODEM CCITT, based on
information from Fernando Cabral in Brasilia <[e-mail]> who sent in
some code for it based on C-Kermit 4C.  Adapted the code to 5A dialing
conventions and augmented it from my copy of V.25bis in the CCITT Blue Book.
Totally untested, but it doesn't seem to break the other modem types.
ckudia.c.  Later, got confirmation from Brazil (after sending the entire new
C-Kermit source code by e-mail!) that the CCITT support works.  Still later,
got a few corrections to it from Fernando.

Added support for Telebit T1600 and T3000, based on T3000 modem and manual.
What a nightmare.  These modems are grossly incompatible with the original
Trailblazer in terms of the commands they accept.  I'm assuming that the T1600
is the same as the T3000, based on info from Fernando Cabral.  Unfortunately,
I have little idea about the T1000 or T2500 or other models.  Rather than add
a whole raft of new commands, I ask the modem its model number with ATI.
Trailblazer reports "962", T3000, T1600, and WorldBlazer report "965", T2500
reportedly reports "972".  For now, if the modem responds with anything else
(or doesn't respond at all), I skip the model-dependent commands.  ckudia.c,
ckcker.bwr.

In the process of adding the new Telebit support, I also fixed a problem
reported by Charlie Finan <[e-mail]>: if an AT-command-set modem
was in No-Echo (E0) Non-Verbal (V0) mode, its responses were not read
correctly.  Fixed in getok(), ckudia.c.  All 4 combinations -- E1V1, E1V0,
E0V1, E0V0 -- should now work.

New Telebit / Hayes / timing-out code tested with original Trailblazer, T3000,
original Hayes 1200, Rolm 244PC (Hayeslike), and Rolm DCM.

Changed SET DIAL TIMEOUT to accept a default of 0, meaning "auto".  ckuus7.c.

Removed restriction on DIAL command that it can only be done on a serial
connection.  It should now be possible to (for example) SET HOST to a reverse
terminal server to get a dialout modem, and then dial it, provided you give
the commands in this order:

  SET HOST <ip-host>
  SET MODEM HAYES (or whatever)
  DIAL <phone-number>

Suggested by Bill Davidson at Cray Research.  Completely untested.  The way
this is presently accomplished is not great.  The same variable is used for
modem type and network type -- if it's positive, it's the modem type, if it's
negative, it's a network type.  Separating the two quantities into separate
variables is not feasible right now, since it would mean rewriting and testing
the system-dependent code for all eight C-Kermit implementations.  The way it
is now, if you SET HOST after SET MODEM, it writes over the modem setting.

Changed SET DIAL DIRECTORY to open the file and keep it open, rather than just
checking its existence and recording the name.  The DIAL command now uses the
open file descriptor, rewinding the file, rather than trying to open it by
name, which would fail if the user had CD'd to another directory since giving
the SET DIAL DIR command without an absolute pathname.  SET DIAL DIR with no
filename closes the file, as does EXIT.  ckudia.c, ckuusr.h, ckuus[67].c.

  NOTE: There is still no command to display the directory, other than TYPE.
  Another approach would be to read the directory into a structure in memory.
  Then we could have various commands to deal with the structure: list the
  whole directory, display certain entries, and even put the entry names into
  a keyword table so "DIAL ?" would list them.  But that would be yet another
  potentially memory-hungry addition to an already overly memory-consumptive
  program.  Of course, it would only use lots of memory if the user had a
  huge dialing directory.  A large-enough directory could cause malloc() to
  fail, whereas the file-rewinding approach can handle directories of any
  size at all.

Fixed dialing directory lookup to work with abbreviations of directory
entries.

Fixed oversights in the dialing directory code, noticed by Kai Uwe Rommel:
tabs were not recognized as field separators, and line terminators were
not stripped.

Later, fixed a bug in the routine that breaks the dialing directory entry
into separate words, also noticed by Kai Uwe.  ckuus5.c.

Jay Rouman reported bizarre behavior on a SUN dialing out with a Hayes modem
when the remote hung up.  Traced to new mdmhup() routine.  It neglected to put
the device back into "DIALING" mode, i.e. to make it ignore carrier, before
trying to output characters (like <sec>+++<sec>ATH0<CR>) to the modem dialer,
resulting in i/o errors, which in turn made CONNECT send beeps to the screen.
Fix installed, but I don't have the configuration to test it here.  Later,
Jay confirmed it works OK.

Also changed CKUCON.C to call mdmhup only if the user explicitly requested
hangup via <esc-char>H.  If the other side disconnected, there's no need for
mdmhup.  ckucon.c.

Added mdmhup() feature to VMS CONNECT command.  ckvtio.c.

There was one case in getok() (the modem command response reader) in ckudia.c
that returned without turning off the timeout alarm.  Found by Dave Wexelblat.
The symptom was a core dump when he did ^\H (hangup in connect mode).
The problem was there all along, but was never noticed till now, because
^\H calls mdmhup(), which uses getok() to read the modem's response to ATH0
or whatever.

Added support for SET DIAL KERMIT-SPOOF to Microcom modem type.  Untested.
Left in COMMENT section.  Not only do I not know if it works, but it might
work on some Microcom models, but upset other models.  ckudia.c.

Added S7 carrier-wait support for Courier HST.  Not tested.  ckudia.c.

Added new response messages for Rolm CBX software release 9005.  ckudia.c.

In the process of testing the new Telebit support, found that the timeouts
were really screwed up.  Sometimes the dial timeout would never occur.  Tidied
this up in several ways -- made sure that ttoc() saved and restored the
current alarm and alarm handler, and ditto for ttinc(), when called with a
timeout interval.  Removed a bunch of unnecessary alarms() and signal()'s from
ckudia.c, and tried not to have a SIGALRM handler active unless it was needed.
Changed sysinit() in ckutio.c to include "signal(SIGALRM,SIG_IGN)" so that
when we save and restore alarms, we start out with something sensible.
Also changed ttinc() and ttoc() to save and restore the previous alarm value.
ckutio.c.

FIXES

Oops, missed one of the unquoted #includes in ckcmai.c.  Peter Mauzey.

Discovered a truly horrible bug.  If you started C-Kermit without an
initialization file, the CD command (when given with no argument) crashes
the program.  Fixed in ckuus5.c.

And another: the \Feval() function would core dump if you used it to divide
by zero.  Now it returns -1.  ckuus5.c.

And another: the negotiated sliding window size was only effective for the
first file of multifile transfer.  After the first file, the window size
would drop back to 1 and stay there.  Fixed in ckcpro.w.

And fixed a related bug, reproduced as follows: SET WINDOW 4 on both ends,
then transfer files using 4 window slots, then SET WINDOW 1 on both ends, then
send a file from C-Kermit.  It uses 4 window slots even though the other
Kermit asked for 1.  Fixed by initializing wslotn (the negotiated window size)
to 1 in tinit().  Also made sure that C-Kermit sent "!" (= 1) in the S-packet
under these conditions (previously it sent a blank).  ckcfns.c.

Fixed a lingering protocol problem.  C-Kermit gets an S-packet (containing
protocol parameters), ACKs it, and then releases the send-buffer, so the ACK
is gone.  Then the S-packet comes again, e.g. because the other Kermit didn't
get the ACK.  The old ACK is no longer there to be retransmitted, so C-Kermit
sent an empty ACK packet which would, of course, screw up everything that
comes after because the two sides have different ideas about which parameters
were negotiated.  So now C-Kermit saves a copy of its init string so if it has
to retransmit the ACK to an S or I packet, the ACK contains the right data.
(I thought I had fixed this in an earlier edit by adding code to rpar() and
resend() -- which I did -- but the resend() routine was not being called at
the place in the input() routine where the problem occurred.)  ckcfn2.c.

Fixed SET FILE BYTESIZE to work when sending files.  ckcfns.c.

Fixed SHOW CHARACTER-SETS and SHOW TERMINAL.  The shotcs() routine was looking
in the wrong table for the terminal character set name.  Also changed it to
skip synonyms and show the primary name (e.g. "macintosh-latin" rather than
"apple-quickdraw").  ckuus5.c.

Chris Hemsing discovered why the file size in the file transfer display is
sometimes clobbered when sending files (apparently it is *always* clobbered in
some implementations, like OS-9, and definitely on the Mac).  fsize was
getting set to -1 in resetc(), after fsize was set earlier when we got the
info about the file.  (Kai Uwe noticed this too in the OS/2 version.)  This
fixes the file transfer thermometer on the Mac.  ckcfns.c.

The following kind of construction never worked right:

  IF blah command
  ELSE IF bleh command
  ELSE command

You couldn't have more than one ELSE because if "blah" was true, the first
ELSE was skipped, which means the 2nd IF is also skipped, which means the 2nd
ELSE is diagnosed as not following an IF, causing an error.  Fixed by allowing
ELSEs to also follow ELSEs.  ELSE not following an IF or an ELSE still causes
an error (as it should), but a dangling ELSE (e.g. and IF followed by 2 ELSEs)
does not -- but it does no harm either (it's treated like a comment).  So now
you can make big long chains of IF-ELSEs, like:

  define foo if not def \%1 error,-
  else if not numeric \%1 error {"\%1" - Not a number},-
  else if = \%1 0 echo zero,-
  else if = \%1 1 echo one,-
  else if = \%1 2 echo two,-
  else if = \%1 3 echo three,-
  else if = \%1 4 echo four,-
  else if = \%1 5 echo five,-
  else if = \%1 6 echo six,-
  else if = \%1 7 echo seven,-
  else if = \%1 8 echo eight,-
  else if = \%1 9 echo nine,-
  else echo I dunno

From James Sturdevant, fixes to INPUT and REINPUT that prevented them from
finding "abababc" in "ababababc".  ckuus4.c.

Andy Fyfe discovered that if you define a new macro whose name is an
unambiguous prefix of an existing macro, the existing macro is deleted.
Fixed in ckuus5.c.

Rearranged SET SPEED keyword table to be alphabetical again, after addition
of several new line speeds.  ckuus3.c.

OTHER CHANGES

Added MSLEEP / MPAUSE command.  Like PAUSE / SLEEP, except milliseconds
instead of seconds.  ckuusr.[ch], ckuus6.c.

Added WRITE ERROR <text> command.  Just like WRITE SCREEN, except it
writes to stderr.  ckuusr.h, ckuusr.c.

Added SET TERMINAL CR-DISPLAY { CRLF, NORMAL } to control the display of
incoming carriage returns on the screen.  Like SET TERMINAL NEWLINE, but in
the opposite direction.  Done at the request of various people who use C-Kermit
to connect to devices (lab instruments) that only send CRs at line end.
ckuusr.h, ckuus[257].c, ckucon.c, ckvcon.c, ckocon.c, ckdcon.c.

Added SET TELNET NEWLINE-MODE { ON, OFF }.  Just like SET TERMINAL NEWLINE,
but applies only to TELNET connections.  Default is ON, i.e. Kermit sends
CRLF when you type CR.  When OFF, Kermit sends CR and NUL, as required by the
TELNET specification, RFC854.  ckuusr.h, ckuus[234].c, ckucon.c, ckvcon.c.
Didn't do ckdcon.c -- it appears to be way behind, needs a lot of work.

Also made the TELNET NEWLINE-MODE apply to file transfer packets.  If C-Kermit
has a TELNET connection, and the packet terminator is CR, a LF or a NUL is
sent after the CR, according to the TELNET NEWLINE-MODE setting.  ckcfn2.c.

Added SET INPUT SILENCE <seconds>.  The longest interval of silence that
will be tolerated by the INPUT command.  Can be used to cause INPUT to fail
before the specified timeout on the search string.  ckuusr.[ch], ckuus[457].c.

Changed INPUT command to accept a null search string, in which case it waits
for any character at all.  ckuus4.c.

Added a new variable, \v(inchar), which holds the last character that was
read by the INPUT command (whether it succeeded or not).  ckuusr.h, ckuus4.c.

Changed INPUT to ignore NUL characters coming from communication device.
They aren't stored in the INPUT buffer, and they don't figure into string
comparisons.  However, an arriving NUL still counts as a character if the
search string itself is null.  This change allows string operations to work
on the \v(input) variable.

Added SET FILE INCOMPLETE as a synonym for SET INCOMPLETE.  ckcker.h,
ckuus7.c.

Fixed IF DEFINED to not report that certain quantities (such as "\a") were
defined.  ckuus6.c.

Changed xxstring() to recursively evaluate the contents of the parentheses
in \$(xxx), \v(xxx), and \m(xxx) constructions.  This allows, for example,
variables to hold environment variable, builtin variable, or macro names,
and their use in constructions such as "if defined \m(\%a)".  ckuus4.c.

Disabled handling of "mail" disposition for incoming files for AOS/VS,
OS/2, Mac, etc.  So now C-Kermit will refuse incoming mail right away, rather
than receiving the file and then complaining afterwards that it couldn't
mail it.  ckcfn3.c.

Changed the method for parsing macros.  Previously, if a top-level keyword
parse failed, we stuffed "DO " into the beginning of the command buffer and
forced a reparse.  This worked, but resulted in much confusion when the user
edited the command, allowing (for example) deletion into the prompt.  Now we
take care of this in a different place, and instead of stuffing "DO ", we
simply pretend the user typed the DO command and go try to process it.  If the
first word in the buffer is not a macro name, cmkey says "?No keywords match".

Changed DO command in a very small way: IF the DO command fails, it sets the
FAILURE flag (as before), but if it succeeds, it does not touch the FAILURE
flag.  This lets us write macros that begin with IF SUCCESS or IF FAILURE,
and use them to test the preceding command, for example:

  DEFINE CHKERR IF FAIL STOP 1 \%1

ckuusr.c.

In the few cases where it was possible, I made the default FILE CHARACTER-SET
be the normal character set for: NeXT, DG AOS/VS, Macintosh, A/UX.  ckuxla.c,
ckmxla.c.

Defining NODEBUG no longer removes session-debugging capability; SET DEBUG
SESSION now works even if C-Kermit was built with NODEBUG.  Suggested by
Peter Mauzey.  ckuusr.c, ckuus3.c.  Added help text for SET DEBUG.  ckuus2.c.

At the suggestion of Bo Kullmar, C-Kermit now prints "Type X or E to cancel"
(or the System-V equivalent) when the user gives any REMOTE command that might
generate a prolonged reply, such as REMOTE DIR, REMOTE TYPE, REMOTE HOST.
ckuus7.c

Changed the keyword help-giver to show all the (visible) commands that start
with the characters typed so far, even when the characters typed so far
identify a complete keyword.  Previously, if you typed (for example) "c?",
it would only show you "c", which is a synonym for CONNECT.  Now it shows
you all the commands that start with C.  ckucmd.c.

Discovered that the new built-in ERROR macro (edit 182) did not work as
intended.  The END 1 in its definition applied to the ERROR macro itself, not
to any macro or TAKE file that happened to be calling it!  ckuus5.c.

Changed the STOP and END commands to allow an optional text string after the
numeric return code.  If given, it is printed.  Now STOP and END do what the
FATAL and ERROR macros were supposed to do, and they do it faster.  FATAL
is still available and still works.  ckuusr.c.

Updated malloc() debugging package, ckcmdb.c, from Howie Kaye at Columbia.
Use with "mermit" makefile entry to build a version of C-Kermit that traps
malloc() errors.  Untested.

Made '-s' command-line option call zchki() on each file for all
implementations, not just UNIX, so "kermit -s xxx" would fail immediately
when xxx doesn't exist or is not readable.  ckuusy.c.

Changed the TRANSMIT command, when FILE TYPE is BINARY and TRANSMIT ECHO is ON
and TERMINAL ECHO is REMOTE, to use ttchk() to decide whether to read and echo
characters, rather than doing an unconditional 1-second timed read, which
slows TRANSMITs down tremendously if the remote end is not echoing and the
user didn't know to SET TRANSMIT ECHO OFF or TERMINAL ECHO LOCAL.  ckuus4.c.

Moved a big chunk of code from opena() to gattr() -- the code that sets text
or binary mode based on the incoming Attribute packet when receiving files.
This allows the file mode to be displayed correctly when rpack() gets the
first data packet.  ckcfn3.c

Replaced CP850/Latin-1 and CP437/Latin-1 translation tables with new versions
that leave the C0 controls alone.  Never actually tried to use the vanilla
IBM CDRA tables before, but it's not pretty when you're stuck with them, as
in OS/2 C-Kermit -- Ctrl-T, Ctrl-U, etc, don't work.  ckuxla.c.

Changed CONNECT module to send TELNET AYT and IP in a single write, rather
than each character singly.  ckucon.c.

Removed unneeded "extern int parflg" from ckcfns.c.

There was a conflict between the stupid DIALING and CONNECT symbols, which
were used to overload the flow-control parameter to ttpkt(), and symbols that
were defined for certain obscure types of hardware flow control.  I got rid of
the the DIALING and CONNECTED symbols entirely, and defined new FLO_xxxx
symbols (with unique values) to take their place.  ckcdeb.h, ckudia.c,
ckutio.c.

Removed #undef CK_RTSCTS etc from ckcdeb.h so they can be defined in
CFLAGS (not that defining these flow control symbols will necessarily result
in anything useful).

Improved formatting of SHOW MACROS to separate each definition with a blank
line, to indent continued lines, and to indicate continued with dashes.
At Andy Fyfe's suggestion.  ckuus5.c.

Fixed Ctrl-C at prompt level to give prompt on new line.  This was broken
by fullscreen file transfer display changes.  ckuusx.c.

At the suggestion of Alan Robiette and Peter Higgenbotham at Oxford
University in the UK, changed the server startup message to account for the
fact that some people are not using local Kermit programs that need to be
escaped back to (e.g. Mac Kermit).  Hopefully the new wording won't break too
many scripts, because in the new scheme of things, arbitrary text can precede
the "KERMIT READY TO xxx..." message.

Added prototypes for Kanji-related functions to ckcker.h.

------------------------------
5A(182) Sat Jul  4 23:50:26 1992

NEW FEATURES

Added CHECK command to check whether a feature is configured.  This command
is available in all interactive versions, regardless of what features might
have been left out:

  CHECK <feature-name>

If the feature is available, the command succeeds, otherwise it fails.
If the CHECK command was issued from top level, a message is printed telling
whether the feature is available.  If it is issued from a command file or
macro and the feature is not available, it fails.  If you have the script
programming language configured, you can use IF FAILURE to check the results.
If not, you can use SET TAKE ERROR ON to quit the command file immediately.
The feature-names are:

Feature-name:          Feature and/or commands:
  DEBUG                  LOG DEBUG
  CHARACTER-SETS         SET { FILE, XFER } CHARACTER-SET, TRANSLATE, etc
  CYRILLIC               Cyrillic character-set translation
  DIAL                   DIAL, SET DIAL, and SET MODEM commands
  FULLSCREEN-DISPLAY     SET FILE DISPLAY FULLSCREEN
  HELP                   Built-in help
  IF                     Script programming language (IF, GOTO, etc etc)
  JOB-CONTROL            SUSPEND, Z, handling of suspend signal
  KANJI                  Kanji character-set translation
  LATIN1                 Latin-1 character-set translation
  LATIN2                 Latin-2 character-set translation
  NETWORK                SET HOST command
  PUSH                   PUSH, RUN, !, @ commands, shell escapes, etc.
  SCRIPT                 SCRIPT command
  SERVER                 SERVER, SET SERVER commands
  SHOW                   SHOW command
  TRANSMIT               TRANSMIT command

This commands lets us check availability of features without having to
depend on the IF command or other script programming language features, and
therefore allows a standard initialization file for all interactive versions,
even minimally configured ones.  For example, an initialization file that
defines a bunch of macros could do this just before the macro definitions
section:

  SET TAKE ERROR ON
  CHECK IF
  SET TAKE ERROR OFF

If the script programming language (including macros) is not configured in
Kermit, the TAKE file terminates immediately, otherwise it keeps going.
Afterwards, once we know we have a script language (including an IF command),
we can check for other features this way:

  CHECK FULLSCREEN
  IF SUCCESS SET FILE DISPLAY FULLSCREEN

ckuusr.h, ckuusr.c, ckuus3.c.

Added a dialing directory, compatible with MS-DOS Kermit 3.11.  The only
new command is SET DIAL DIRECTORY <filename>.  Many modules.  Directory is
a plain text file, one line per entry.  Entries look like this:

  name number speed parity comments

If you have specified a dialing directory file, the DIAL command reads it and
tries to match the dial-string with a name in the file.  When there is a
match, the associated number is substituted and the speed and parity, if
specified in the entry, are changed.  The dial-string is used as given if it
is not found in the directory.

The dialing directory fields are separated by one or more spaces or tabs.  A
field can include spaces if it is surrounded by curly braces.  The speed
and/or parity fields can be omitted, in which case the current speed and
parity settings are not changed.  You can also put an "=" sign in the speed
or parity field to leave it unchanged.  Example:

  digital   1-800-2341998 2400   none   The DIGITAL Store
  rolm      93,7654321    2400   none   The Rolm CBX
  telenet   93,9876543    2400   mark   SprintNet
  nospeed   8765432       =      even   Leave speed alone but set parity
  noparity  9876543       2400   =      Leave parity alone but set speed
  {my sun} {93,854 1824}  2400   none   With word grouping

For Hayes and Telebit dialing, changed C-Kermit to set modem register S7
according to the calculated (or user-specified) dial timeout.  ckudia.c.

Changed Hayes's "wake-string" from "AT" to "ATQ0" to make sure result codes
are displayed.  ckudia.c.

Added four new elements to the modem-info structure: escape sequence (e.g.
Hayes "+++"), escape sequence guard time, hangup sequence, and pointer to
function to read modem response string to non-dialing commands (e.g. Hayes
"OK").  This is to let commands like HANGUP not only drop DTR, but also
escape back to the modem and give it its particular hangup command.
Added mdmhup() routine to ckudia.c to do modem-specific hangup.

These elements were filled in for Hayes, US Robotics, and Telebit modem types
(the ones that have AT command sets), as well as the Racal-Vadic VA4492E (info
from manual).  People who know about the other types should fill in this info
for their modems too.  This involves the four new structure members, plus
writing a routine to parse modem responses, if this is done differently from
Hayes (see the getok() routine for Hayes).

The new mdmhup() routine is used in the following ways:

 1. During dialing, if DIAL HANGUP is ON, we call mdmhup() first, and then
    we call tthang() only if mdmhup() failed to get a positive response
    from the modem, including the case where no hangup string is defined for
    the modem.

 2. During CONNECT, same deal for <esc-char>H.  ckucon.c.

 3. Same deal for HANGUP command.  ckuusr.c.

Hopefully this will clear up a lot of the problems we have been having with
tthang() by simply not calling it in many cases.  If it causes problems,
you can easily revert to the old way by including -DNOMDMHUP in your CFLAGS.
Tested with Hayes 1200, Telebit Trailblazer, and Rolm 244PC, as well as on
several modem types for which the new procedure was not defined.  Not tested
on the Racal-Vadic modem.

Terry Kennedy implemented modem-signal sensing for the VMS version.  Now
SHOW MODEM and WAIT <n> <modem-signals> work.  ckvtio.c.

Terry Kennedy substituted a couple short, simple routines for the curses
library on VMS.  Now the fullscreen display works repeatedly, and consumes far
less memory and CPU.  This should be done in the UNIX version too, maybe in
the next edit.  Ideally, we wouldn't use any libraries at all, to eliminate
the multiple-makefile entry problem.  Instead, just grab the few needed escape
sequences from (where???).  There doesn't seem to be any good way to do this.
Deferred till next time.

Terry Kennedy also wrote a VMSINSTAL kit for C-Kermit:
CKVKIT.COM and CKVMSI.COM.

Changed the built-in FATAL macro to hangup if Kermit is in local mode.
ckuus5.c.

Changed name of ERROR command (which sends an E-packet) to E-PACKET.  ckuusr.c.

Added a built-in ERROR macro, which prints error message, then does END 1.
ckuus5.c.

Online documentation files reorganized:

  CKCCFG.DOC - C-Kermit configuration info for all versions
  CKUINS.DOC - UNIX installation instructions
  CKVINS.DOC - VMS installation instructions

  CKCKER.BWR - General "beware" file
  CKUKER.BWR - UNIX-specific beware file
  CKVKER.BWR - VMS-specific beware file
  etc.

FIXES

TELNET CONNECT fix.  It often happened that when opening a TELNET connection
to a remote host, the login: prompt did not appear.  The problem was that the
screen output buffer wasn't getting dumped if a TELNET negotiation option
arrived at just the wrong time.  Now the CONNECT code dumps the screen output
buffer before it handles any TELNET negotiation.  ckucon.c (UNIX), ckvcon.c
(VMS).

Fixed divide-by-zero in "Estimated time remaining" calculation in fullscreen
display.  Bug noticed and fix provided by Fulvio Marino.  ckuusx.c.

Fixed FOR, WHILE, and XIF macros, broken in edit 181.  From Fulvio Marino.
ckuus5.c.

Fixed LOG blah file APPEND to return SUCCESS when it succeeds, rather than
always returning FAILURE.  Fulvio Marino.  ckufio.c.

Fixed HANGUP on network connection to return SUCCESS when it succeeds, rather
than always returning FAILURE.  Fulvio Marino.  ckutio.c.

Several other dereferences of null pointers found and fixed.  Various modules.

SET TAKE ERROR ON never worked if Kermit was built without the script
programming language option (i.e. if it was built with -DNOSPL).  Fixed.
ckuus5.c.

Fixes to VMS file i/o from Terry Kennedy.  Edit 181 broke the sending of
binary files (all fixed-format files were erroneously considered text), with
the most obvious fault being the inability to send VMS .EXE files correctly.
zopeni() in ckufio.c.  Also, the automatic sensing of binary vs text files was
busted -- who knows for how long!  Code (re-?) added to sattr() in ckcfn3.c
to handle it.

Changes from William Bader so CKVTIO.C will compile under VMS 4.4.

Changes from James Sturdevant to allow WIN/TCP code to compile on systems that
objected to the WINTCP #include syntax (unquoted filenames) in edit 181.
ckcdeb.h, ckcnet.[ch], ckudio.c, ckuscr.c, ckuus[4x].c, plus new versions of
CKVKER.COM and CKVKER.MAK.  The idea is to define VAXC$INCLUDE to search the
TWG include files first, and then change "#include foo" to "#include <foo.h>"
in all the source modules so other compilers won't complain.

New CKVKER.MMS from Piet Plomp to include WIN/TCP.  Modified locally to
incorporate James's changes.  Includes curses.

Fixed curses display for VAX/VMS version, based on suggestions from James
Sturdevant and William Bader -- basically, never call endwin() (seems risky,
but also seems to work OK).  The real fix is to replace curses calls with
SMG$ (VMS screen manager) calls.  ckuusx.c.

Later, eliminated CURSES library altogether from VMS version.  Terry Kennedy
pointed out that VMS only supports VT52 and VT100 and later CRT terminals,
so we do the VMS fullscreen display using simple built-in routines,
eliminating a lot of overhead and memory consumption.  ckvtio.c, ckuusx.c,
ckuus7.c, ckvker.mak.  Also, William Bader sent in an SMG$ (VMS Screen
Manager) version.

Still later...  It turned out that the do-it-yourself VMS curses replacement
spent too much time updating the screen (because there was no optimization).
This, in turn, caused VMS to lose characters from incoming packets when the
buffer size was small (e.g. when using the typeahead buffer, whose size, by
default, is 78 chars) because its back was turned too often.  So I put in
William's SMG$ code, leaving the other two methods also intact.  Any one of
the three can be activated by the appropriate #define in the "screenc" section
of ckuusx.c (but if you want to go back to using VAXCCURSE, you'll have to
change the build procedures to link with the VAXCCURSE library).  Using SMG$
does indeed solve the problem with file transfers because it optimizes screen
writes very nicely.

Changed Amiga source code to use the full-blown UNIX character-set stuff,
so the next time it is compiled, it will include it.

Fixed multiline GET *again*, to compile correctly if NOSPL is defined.
Steven M. Schultz.  ckuus6.c.

Changed packet-length display in SHOW PROTOCOL to be less confusing, suggested
by Mike Normile of DG: the send-packet size is now shown to be the negotiated
length.  Ditto in the STATISTICS command.  ckuus4.c.

Fixed yet another X.25 glitch (a symbol in ckuusr.h was defined wrong).

Improved some of the HELP commands.

Bob Babcock <[e-mail]> reported that CRs were
echoed as LFs, rather than CRLF on Convex/OS 9.1.  This was traced to the
turning off of IEXTEN ^O/^V processing, which is apparently misimplemented on
the Convex.  Added a new CFLAGS symbol NOIEXTEN to make Kermit leave it alone,
and put it in the Convex makefile entry.  makefile, ckutio.c, ckuver.h,
ckuus5.c.

Changed OUTPUT to behave like CONNECT on a TELNET connection, i.e. to send
CRLF when asked to send CR.  Ditto when TERMINAL NEWLINE-MODE is ON.
ckuus5.c.

Removed all the directory-related #includes from ckutio.c.  I have no idea
why they were ever there in the first place.

Fixed ttpkt() to turn off t_eofc and t_brkc characters in tchars structure.
This was interfering with file transfer on NeXT OS 2.0.  Thanks to Joe Bearly,
[e-mail].  I hope this doesn't destroy compilations anywhere.  It
seems there is no cure for System A that is not also poison for Systems B, C,
and D...  If these structure members come up as undefined during compilation,
add -DNOBRKC to your CFLAGS and let me know.  ckutio.c.

2.11BSD version didn't work any because one of the overlays got too big (by
128 bytes).  Adjusted the overlays, also changed the makefile to pass the name
of the extracted-string file to ckustr.c via a symbol, rather than making the
user edit the ckustr.c file.  It runs very slow and jerky.  Tried adding
-DNOSETBUF to the CFLAGS, but it didn't make any difference.

Still more SCO UNIX (ODT) fixes.  It seems that the data type for pid is
not always "short" in ODT 2.0.  Changed the relevant makefile entries to say
-DPID_T=pid_t, rather than -DPID_T=short, since pid_t should be available
as a typedef on all these systems.

Added more -DNOxxx CFLAGS to the coherentmi entry in one last attempt to
make an interactive version that fits in 64K.  makefile.

------------------------------
5A(181) Sat Jun 20 16:53:20 1992

Added INTRODUCTION command.  ckuus[hr2].c.

Fixes to fixes to concb(), conbin(), ttvt(), ttpkt() for System V from David
Wexelblat, AT&T Bell Labs <[e-mail]>.  The DGUX 4.30 fixes
introduced in edit 180 broke Kermit for most System-V based systems.  ckutio.c.
Tested OK on SUN (make sunos41s5, which failed in edit 180), ...

Fixed typo in ckuus3.c: "tmpbuf[1] - '\0';" in line 582, minus should be
equals.  Spotted by Bo Kullmar.

Added SET LANGUAGE FRENCH OE-digraph support for DGI, Apple, and NeXT
character sets.  ckuxla.c.

Fixes and tuneups to curses display.  ckuusx.c.

Changed the word "curses" to "fullscreen", but left "curses" as an invisible
synonym.  #ifdef'd FILE DISPLAY table for Mac.  ckuus[2457].c.

Changed "set file display fullscreen" to call tgetent() to check whether
terminal type is known before letting them use fullscreen display.  If it
isn't, initscr() exits back to the operating system, killing Kermit and
leaving the terminal modes messed up.  So now we check first by making a
direct call to a termcap routine, tgetent(), before initializing curses.  This
might be tricky because it is only simulated in System V.  Tested OK on SUNOS,
NeXT, Dell SVR4, RS/6000.  ckuus7.c.

Enabled lockf() code for all SVR4+HDBUUCP systems, blessed by AT&T and Dell.
Governing symbol is LOCKF.  You can also add -DLOCKF to your CFLAGS if you
want it on any other system.  ckutio.c.

Minor changes to ckcnet.c for OSF/1 and POSIX (in SO_OOBINLINE section) from
Michael Pins <[e-mail]>.

A couple #endif trailers were not comments, noticed by Michael Pins and
others.  ckcnet.c, ckutio.c.

Fixed a couple typos in ckuus3.c in the flow-control keyword table, flotab[],
and removed the special stuff for UTEK (Tom Kloos).

Some tiny tweaks to the protocol in ckcfn2.c to see if we can clear up some
"resend error" and "can't allocate receive buffer" messages.

Numerous tiny fixes to messages and statistics counters, etc.

Added new messages at start of remote-mode packet operations:

  KERMIT READY TO xxx...

where "xxx" is SERVE, SEND, or RECEIVE.  These are the new "standard" Kermit
messages, and have also been added to the new release of IBM mainframe Kermit,
4.2.4.  They should also be added to all other Kermit programs that can
function in remote mode.  This way, script writers will always know what to
look for and will not have to depend on idiosyncratic messages.  The old
messages are still there, preceding the new ones.

Added support for Wollongong WIN/TCP for VAX/VMS from Ray Hunter
<[e-mail]> and Steve Smail at Wollongong.  Instructions for building
are in ckuins.doc.  Ray made a proper version of contti() for use with WIN/TCP
-- no polling loop.  This code also works with Multinet, and it makes CONNECT
mode *much* faster, and as an added benefit, does not drive the VAX crazy.
Unfortunately, file transfer on Multinet connections is still very, very, VERY
slow.  I don't know how fast it is on WIN/TCP connections.

Rewrote ttinl() for VMS again.  Added the "Doomsday Kermit" business to the
network portion of it.  But I could not allow a printable SOP for the serial
line case because VMS is doing input based on the termination character.  But
in any case, the network version will now read packets based on their length
field.

But file transfer over a VMS Multinet (and presumably WIN/TCP) connection was
just as slow as ever.  Hours of staring at ttinl() and the various routines in
ckcnet.c (netinc, ttbufr, and nettchk) finally produced the answer: netflui()
was the culprit -- it was trying to read too many bytes from the network, and
so sat there forever, or until the other Kermit timed out and retransmitted.
And then netflui would eat parts of the new packet.  Hence the 10-20 second
interval between each packet.  The totally simple and obvious solution was
to have netflui() clear the internal before *before* calling ttchk(), rather
than after!  Now file transfer goes at a respectable speed.  ckcnet.c.

The Wollongong changes broke CONNECT mode for serial lines.  Fixed by setting
the mask for sys$wflor() correctly before calling it.  contti() in ckvtio.c.
We still get the %SYSTEM-W-DATAOVERUN errors during file transfer (especially
when C-Kermit is receiving) and also during CONNECT when screenfulls of text
are being blasted at C-Kermit.  Also, C-Kermit/VMS fails to react properly
when a serial connection is hung up -- it prints an error message, but doesn't
return to the prompt.

Fixed bugs in VMS Kermit CONNECT-mode escapes: "break;" was missing in the
switch statement after the new options A and I.  A "break;" was also missing
in ckucon.c, so if you send a Telnet "Are you there?" you also sent a Long
BREAK.  Also fixed horribly messed-up CONNECT-mode escape help message.
CKVCON.C.

Changes to CKVTIO.C from Terry Kennedy to enable 8-bit communication in
CONNECT mode.  Apparently this was broken in edit 179 (CKVTIO.C 034).

Change to CKVFIO.C from William Bader via Terry Kennedy to allow for
fixed-length files that have record attributes.

Added SET TAKE ON/OFF as an invisible synonym for SET TAKE ECHO ON/OFF, for
compatibility with MS-DOS Kermit.  ckuus3.c.

Fixed multiline GET, again.  This time to make sure it expands variables in
the second and third line when reading from a TAKE file or macro definition.
Problem noticed by James Sturdevant.  Required decomposing and modularizing a
*lot* of code in ckuus5.c, and then changing doget() in ckuus6.c to use the
new routines: getncm() (get next command from macro) and getnct() (get next
command from takefile).  Now, not only can multiline GET be used in TAKE files
and macros, and not only can the 2nd and 3rd lines contain variables, but all
the other rules are observed too, e.g. line continuation, trailing comments,
leading and trailing whitespace, etc.

Fixes to several modules to allow successful building with -DNOSPL.

Compiled OK on SUN, Dell SVR4, RS/6000 AIX 3.1, NeXT...

Changed makefile to let user specify the make program to be used on the
make command line, e.g.

  make irix40 "MAKE=smake"

or:

  make sunos41 "MAKE=make -P"

Fixed a bug in window-size renegotiation, noticed by Christian Hemsing.
ckcpro.w, ckuus3.c.

Changed conchk() in ckutio.c (for UNIX) to return 0 if the backgrd flag
is set.  Doing the input-buffer-checking ioctl's while Kermit is not in the
foreground apparently causes serious problems on some systems, such as
Olivetti X/OS, where it suspends Kermit.  Fulvio Marino, Olivetti.
*** This change should also be added to the VMS version as part of fixing its
rendition of conint() ***

Permanently disabled BYE for the Data General AOS/VS server, since it can't
log out its own job.  ckcmai.c, ckuusr.c, ckuus6.c.

Some more minor Data General changes from Eugenia Harris.  ckcxla.h, ckuusx.c.

Added two include files for VAX/VMS WIN/TCP: domain.h and protosw.h, from
James Sturdevant.  Also from James, ckvker.com was updated to also build the
WIN/TCP version automatically, as it already did for MultiNet.  Also from
James, ckvker.mak updated for WIN/TCP.

Added ttsndlb() (send Long BREAK) to VMS version.  ckvtio.c, ckcdeb.h,
ckucon.c, ckvcon.c, ckuus5.c, ckaplm.doc.

Fixed handling of carriage returns at the keyboard on TELNET connections
for UNIX (ckucon.c) and VMS (ckvcon.c).  Now you can have a normal TELNET
session to a VMS CMU/TEK or UCX system (previously CRs would sometimes not
be noticed by the VMS host).  So the rule is: *always* send keyboard CR
as CRLF on TELNET connections, regardless of which side is echoing (previous
edits of C-Kermit sent CRLF only if it was echoing locally).

Totally rewrote the communications input routines for VMS C-Kermit: ttinc,
ttinl, ttxin, ttchk, and ttflui, to be fully buffered, using an underlying
buffer-filling routine, txbufr(), for serial devices similar to what is used
by the network code.  Later, Terry Kennedy went over this work and cleaned
it up, and made it work in a couple cases where it didn't: fixed parity
(again), fixed "getty babble" problem, friendlier error handling and messages,
automatic popping back to prompt on serial connection if remote hangs up,
and added code to properly hang up a LAT connection.  Still to be done:

 . Fix contti() to allow keyboard to interrupt sustained input from port
   when lots of port chars are buffered.

 . Integrate network buffers with ttxbuf[] and make ttinc() into a macro.

 . Get rid of ttinl.  Move ttinl() code to rpack().

 . Get rid of ttxin.  Don't need it any more.  Or else change it do do
   a memcpy or whatever.

 . Clean up ckvcon.c.

 . Add UCX support (Terry).

Fixed (via kludge) a problem in VMS C-Kermit: if you DISABLE CD, it wouldn't
let you GET any files at all even if they were in your current directory.
Added zchkdir() to ckvfio.c and called it from openi() in the VMS case only.

Added definitions for CK_LBRK (can send Long BREAK) to ckcdeb.h for all
versions except OS-9.

Corrected miscellaneous typos noticed by Tim Theisen <[e-mail]>.

Added "AOS/VS" to the list of strings returned by \v(system).  ckuus4.c.

Added \v(day) variable: day of week "Sun", "Mon", etc.  If underlying C
library version of asctime() (or whatever) returns non-English day names as
the first 3 characters of the string (see ztime() in ck?tio.c), then the
non-English day names are returned.  Also added \v(nday): day of week.
0=Sunday, 1=Monday, etc, but this one depends on underlying English day names.
ckuus4.c, ckuusr.h.

Added \v(local) == 1 if C-Kermit is in local mode, 0 if in remote mode.
ckuus4.c, ckuusr.h.

Added \v(cmdsource), command source: "prompt", "macro", or "file".
Also \v(cmdfile) = name of current command file, if any, else null string.
Also \v(macro) = name of current macro, if any, else null string.
Also \v(exitstatus) = current exit status value.
ckuus4.c, ckuusr.h.

Changed SHOW VARIABLES to use "more?" prompting, since we have more than a
screenful of them now.  ckuus5.c.

Ensured that \fcharacter(n) works only for 0 <= n <= 255.  ckuus4.c.

Fixed a bug that prevented the failure flag from being set when a GET
command was interrupted.  ckcfns.c, ckcpro.w.

Added SET TELNET ECHO { REMOTE, LOCAL } to set initial TELNET echoing state,
which is LOCAL by default, according to the NVT specification.  This is to get
around problems caused by echo-mode switching upon initial connection.  And
SET TELNET TERMINAL-TYPE [ <string> ] to let the user specify a terminal type
to be sent to the remote telnet server during terminal-type negotiation, to
override the normal behavior of sending the value of the TERM environment
variable.  ckcnet.c, ckuusr.h, ckuusr.c, ckuus3.c.

Changed SET TERMINAL ECHO to accept LOCAL and REMOTE as synonyms for ON and
OFF, and made ON and OFF invisible keywords for compatibility with MS-DOS
Kermit.  Changed SHOW TERMINAL to report ECHO as "local" or "remote" rather
than "on" or "off".  ckuus7.c, ckuus5.c.

Made G a special abbreviation for GET, and made SET FILE DISPLAY QUIET
a synonym for SET FILE DISPLAY NONE (for compatibility with MS-DOS Kermit).
ckuusr.c, ckuus7.c.

Uncommented the ERROR command.  It seems to work OK now.  ckuusr.c.

Added LATIN2 transfer character set for Albanian, Czech, Hungarian, Polish,
Romanian, Serbian, Croation, Slovak, Slovene.  New transfer character-set:
LATIN2.  New file character-sets: CP852 and LATIN2.  Works nicely with a PC
that has DOS 5.0 with the new Eastern Europe code page.  It is still possible
in C-Kermit to translate any-to-any.  Latin-2 support is included unless you
put -DNOLATIN2 on the cc command line.  Adds about 3-4K.  ck[cu]xla.h,
ckuxla.c, ckuus4.c, ckucon.c, ckuins.doc.  In the process of doing this, I
took out all the nested #ifdef's.  Now we have constant numbers assigned to
each character set, no matter which groups (CYRILLIC, KANJI, etc) are selected
at compile time.  This makes it a lot easier to add new character sets, like
Hebrew and Arabic, which probably come next.

Added SHOW CHARACTER SETS.  ckuusr.h, ckuusr.c, ckuus4.c, ckuus5.c.

Allow SET TRANSFER LOCKING-SHIFT to be operational, even if built with
-DNOCSETS.  ckuusr.c.

Chopped off the end of this file because it was getting too big to edit.
Old material placed in cku179.upd.

Fixes for SCO UNIX 3.2.4 and ODT 2.0 for the stupid "I think I'm in the
background" problem from Warren Tucker.  The problem was that SCO changed
pids from ints to shorts, and the call to the ioctl() that takes the address
of a terminal process group was malformed.  makefile, ckucon.c, ckutio.c.

Split SHOW VERSION into two commands: SHOW VERSION and SHOW FEATURES.
ckuusr.h, ckuusr.c, ckuus5.c, ckuus6.c.

New ck9fio.c module from Christian Hemsing.  Commands using (simulated)
popen() now display their error messages as well as standard output.
DIRECTORY command now shows file size and attributes.

------------------------------
5A(180) Fri Jun  5 13:34:42 1992

SHOW KEY's "Press key:" prompt also needed an fflush()...

Added SET TERMINAL ECHO { ON, OFF } as a synonym for SET DUPLEX, SET
LOCAL-ECHO, ...  ckuus7.c, ckuusr.h.

Added nicer messages for CONNECT, SHOW TERMINAL, SET ESCAPE.  They now show
the ASCII name of the CONNECT-mode escape character.  ckuusx.c, ckuus3.c,
ckuus5.c, ckucon.c.

Added modem signal display to CONNECT-mode status message, ckucon.c.  Moved
shomdm() from ckuus4.c to ckuusx.c so it could be called from the command-line
only version.

Added SPEED and CARRIER settings to SHOW DIAL.  ckuus5.c.

Cleaned up SET FLOW table to only allow keywords that are valid on the
given system.  Added symbols to ckcdeb.h for this.

Changed setlin() to substitute appropriate NeXT device name if RTS/CTS
flow control selected.  ckuus7.c

Rearranged the STATISTICS display.  ckuus4.c.

Added a new state-input combination to ckcpro.w: <serve>N.  If the server
gets a NAK while in command-wait state, it probably means the client gave
a RECEIVE command instead of GET.  So now the server sends back an error
packet saying "Did you say RECEIVE instead of GET?".  Previously the message
said "Unimplemented server function".

Added a default question, " Yes or no? ", for GETOK.  ckuus6.c.

Added SET FLOW RTS/CTS for Commodore Amiga.  ckcdeb.h + new ckitio.c
from Steve Walton.

Changed argument declarations in cmkey(), cmkey2(), and cmsavp() to use
pointers rather than arrays, to make MetaWare High C R2.3x on NCR MiniTower
happy.  Checked with GNU C -Wall, seems OK.

Discovered that the INPUT and REINPUT commands fail (and always have failed)
to match strings in certain contexts, for example to find "abc" in "ababc".
That's because when it rewound its search string in the middle of a partial
match, it failed to check the source string again.  Fixed in doinput(),
doreinput().  ckuus4.c.

It was bugging me that long macro definitions could not be commented, so
I found a way to remove the restriction, at least for command files.
For example:

define ibm set parity mark,- ; Parity for IBM mainframe
  set duplex half,-          ; Use local echoing
  set flow none,-            ; No full-duplex flow control
  set handshake xon          ; XON line turnaround handshake

Now the rule is:  A trailing comment begins with a semicolon or number sign
preceded by at least one space or tab.  If a trailing comment is encountered,
it is removed, and trailing blanks are trimmed.  If the final character of the
result is '-', the line is to be continued.  Thus, the continuation character
comes BEFORE the comment, not after it.  ckuus5.c.

Also, fixed gtword() to trim trailing blanks before deciding whether a word
ended in the continuation character.  Only affects continued lines typed at
the prompt.  ckucmd.c

Installed SunLink X.25 fixes from Gary Mills, U of Manitoba.  ckuus7.c,
ckucon.c, ckutio.c.

Narrowed down the cause of the Sys V Telnet bug in which the first character
you type after CONNECT is misinterpreted as the CONNECT-mode escape character.
When the WILL ECHO telnet message is received from the remote, the lower
CONNECT fork signals the upper one to change its echoing status, using SIGUSR2.
In System V, this interrupts the pending read() in the lower fork, making it
return -1 with errno set to EINTR, which means "a signal was caught during the
read system call".  coninc() thinks this means that the user typed the escape
character.  But that should only be happening during the local-mode file
transfer display.  Finally realized: a System V read() will fail with EINTR
if *any* signal is caught while the read() is pending.  This happens,
naturally, when the lower CONNECT fork signals the upper one about the echoing
mode change.  Wrote a new version of coninc() to check for this and retry the
read() when it happens.  Seems to work ok.  ckutio.c.

Added IF FOREGROUND (== IF NOT BACKGROUND).  ckuus6.c.

Added OS/2 changes from Kai Uwe Rommel: bug fixes, new SET TERMINAL CURSOR
{ UNDERLINE, HALF, FULL } command.  ckocon.c, ckotio.c, ckufio.c, ckuus7.c,
ckuusr.h.

Added \Fright(text,length), is replaced by rightmost "length" characters of
"text".  ckuusr.h, ckuus4.c.

Changed ECHO and WRITE SCREEN commands to be like OUTPUT, ASK, etc -- To allow
enclosing braces, which are stripped, but which prevent normal stripping of
leading and trailing spaces.  ckuusr.c.

Changed server message not to say "close the connection".  ckcmai.c.

Fixed SET COUNT to fail and print an error message if given a non-numeric
argument.  ckuus3.c.

....ckb....

Fixed caseless string comparisons.  xxstrcmp() had a stupid bug.  ckuus6.c.

Fixed bug in GOTO in macros.  It would go to the first label that matched the
target label, even if the target label was only a substring of the GOTO label.
For example, if there were labels XX and XXX, GOTO XX would go to label XXX if
it came before XX.  Ditto for GOTO in TAKE files.  ckuus6.c.

The following kind of command did not work:

    asg \%9 \fexec(lookup \%1)

because the variable name buffer and pointer were global, rather than
automatic variables, and the LOOKUP macro defined some other variables, thus
overwriting the name from the ASG command.  When \fexec() finally returned,
its value was assigned to some random variable.  Fixed by making vnambuf[] an
automatic variable in doincr() and dodef().  ckuus6.c.  Also made vnambuf[]
automatic in cmdini(), just in case.  ckuus5.c.

Nested FOR loops did not work.  The problem was that FOR and WHILE loops are
macros that work by defining themselves and then executing themselves.  When
loops are nested, the inner loop saves the outer loop's definition, replaces
it, defines a new one, executes it, then restores the old one.  So far so
good, but now the restored version of the outer loop is very likely at a
different location in memory than the original, so the "macp" pointer is
referencing random garbage.

Solution: (1) Define a new built-in variable, \v(cmdlevel), and define FOR and
while loops using its name, e.g. _FOR0, _FOR1, etc.  (2) Create two new
commands for internal use only: _ASSIGN and _DEFINE.  They are just like
ASSIGN and DEFINE except that they evaluate the name of the macro to be
defined before defining it, for example:

  _ASSIGN _for\v(cmdlevel) blah blah blah

If the command level is 1, this makes a macro called "_for1".  Now nested
FOR loops work.

Same fix for WHILE and XIF commands.

Next problem (this has been with us all along): RETURN from within a FOR,
WHILE, or XIF had no effect.  That's because its return value was not passed
along through the enclosing macros.  Unfortunately, this one is not so easily
fixed.  These commands can pass along their return values easily enough
(RETURN \V(RETURN)), but that's not good enough.  If a RETURN command is given
in one of these macros, the final _PUTARGS command won't be executed and the
\%0..9 variables could be screwed up, and anyway, the return value is for the
_FORx macro, not for the macro that contains the FOR loop.  So for now, it
still seems the best course is to avoid RETURN commands inside FOR, WHILE, and
XIF command lists.

Added makefile entry for Linux from Bengt Andersson of ABC-Klubben in Sweden
<[e-mail]>, via Bo Kullmar.  Apparently, needs more work.

Changed sco3r2lai makefile entry to include -Di386 because
/usr/include/sys/netinet/in.h requires this definition to declare htons()
correctly for endian order.  Xenix cc does not provide this (but SCO UNIX
cc does).  From [e-mail] (Rodney Brown).

Added support for Sperry/UNISYS 5000 UTS V 5.2 (Sys V R2) by forcing
redefinition of S_ISREG and S_ISDIR macros in ckufio.c, like for Olivetti
X/OS and Amdahl UTSV.  Also added a makefile entry, "unisys5r2".

Correction to Finnish / Latin-1 table from Vesa Gynther in Finland.  ckuxla.c.

Added PING command.  Just runs PING in a fork.  If ping is not in user's
path, or is protected, the command won't work.  Which is as it should be.
ckuusr.[ch], ckuus2.c.  Doesn't work too well on VAX using MultiNet PING,
which, by default, pings repeatedly.  Ctrl-C doesn't make it stop (even though
VMS gets the Ctrl-C and prints "Cancel" in reverse video), Ctrl-Y kills not
only PING, but Kermit itself.

Changed OUTPUT command to allow \B and \L for BREAK and Long BREAK, rather
than requiring two backslashes, for compatibility with MS-DOS Kermit.  Two
backslashes still work.  Also fixed dooutput() NOT to send BREAK if
it sees \\b after the command has been processed, which should mean to send
a backslash followed by a b.  ckuusr.c, ckuus5.c.

Added \fcode() function.  Returns the null string if its argument is null,
otherwise the numeric character code of (the first character of) its argument.
This is the opposite of fchar(), which returns the character corresponding to
its numeric argument, 0-255 (works only for single-byte chars).  ckuusr.h,
ckuus4.c.  Done at the request of a guy who needed to calculate checksums in
scripts for talking to some kind of fancy online beeper dialer that needs
checksums in its commands.

Added a new CONNECT-mode escape command: A.  It is available only on
network-configured versions, and works only on TELNET connections.  It sends
a TELNET "Are You There?" command.  When the remote TELNET server gets one
of these, it is supposed to send back "[Yes]".  Suggested by John Klensin.
ckucon.c.

Added <esc-char>I to send TELNET Interrupt Process on TELNET connections.
It was already there for X.25 connections.  ckucon.c.

Updated CONNECT-mode help message for the A and I.  ckucon.c.

changed HELP CONNECT to show the current escape character.  ckuus2.c.

Rewrote the CONNECT command, again.  Previously, it did not do buffered,
multicharacter port reads and screen writes on TELNET connections, or if
session debugging was on, or if SO/SI was being done, which made for very poor
performance especially on TELNET connections, which are supposed to be fast.
Created ckcgetc() and ckcputc() functions, and moved all the buffering to
inside them.  This eliminates tons of confusing, redundant code.  But why use
functions?  Because of TELNET...  When we see a TELNET IAC arrive, we call
tn_doop(), and tn_doop() reads the subsequent characters, whose number is not
known in advance.  Previously, tn_doop() read them directly from the
communication channel, which is why single-character reads were required for
TELNET connections.  Now, we pass a pointer to the character-input function as
an argument to tn_doop().  So when tn_doop() is called from CONNECT mode, this
is ckcgetc().  From elsewhere (e.g. from the SCRIPT and INPUT commands), it is
ttinc().  ckucon.c (CONNECT), ckuscr.c (SCRIPT), ckuus4.c (INPUT), ckcnet.c
(tn_doop()), ckcnet.h and ckcker.h (function prototypes), ckutio.c (remove the
call to nettchk(), which never did anything for UNIX, and let ttchk() check
the input buffer).  Compiled and tested on SUN, NeXT, Dell Sys V R4, and
DEC MIPS/RISC box with Ultrix 4.2.  Speedup is approximately 750% on the NeXT
(in a 'terminal' window).

Adapted VAX/VMS CONNECT module to new scheme.  There is a very noticeable
improvement in CONNECT performance, especially on MultiNet.  It's still a bit
jerky, but the jerks are fewer and farther between.  We're still using
contti(), with its polling loop that drives the poor VAX crazy and eats up
tons of CPU, but we're using it less.  We really need something like select()
to do this right.  File transfer is still agonizingly slow on MultiNet
connections, but nothing has changed there.  It's not too bad on serial
connections, though, but that hasn't changed either.  ckvcon.c

Changed all routines in ckcnet.c to send TELNET negotiations as strings with a
single write() call, rather than in one write() per byte.  Not only does this
speed things up a bit, but also seems to clear up some TELNET protocol
problems that occurred when the negotiations did not arrive in a single TCP
packet.  Suggested by Eugenia Harris at DG.  ckcnet.c.  Later reports indicate
this cleared up a problem with talking to a VCP-200 reverse terminal server.

Changed TELNET subnegotiation reader in tn_doop() to break out of reading a
subnegotiation if an IAC comes followed by anything but SE or another IAC.
This prevents C-Kermit from hanging if the terminating IAC SE never comes, for
example because the telnet server is broken or there is a network glitch.  As
part of this, IAC IAC within subnegotiation data is now recognized as a quoted
IAC, as specified in RFC 855.  The unexpected TELNET command is lost, but at
least now we don't hang forever waiting for the IAC SE.  ckcnet.c.

DG/UX uses mailx and lp rather than mail and lpr.  Eugenia Harris.  ckufio.c.

Fixed ttinl() prototype for OS-9.  Christian Hemsing.  ckcdeb.h.

Prevented ASKMORE double definition. Christian Hemsing.  ckuusx.c.

Added code to opent() to change transfer mode to text.  This was preventing
REMOTE commands from working right when client had SET FILE TYPE BINARY
and it had nonstandard line terminators, as OS-9 does.  Problem noted by
Christian Hemsing and this fix tested OK by him also.  ckcfn3.c.

Changed getpkt() and all calls to it to make sure that C-Kermit never
constructs a packet whose *total length* is greater than the receive
packet-length given by the receiver.  Previously, the receive packet-length
was taken to mean the biggest "length field".  Now we take it to mean the
total packet length, to avoid overrunning the receiver's input buffer.  This
is especially important for use with Kermit-370 in "Doomsday" mode.  ckcfns.c.

Changed fnparse() to put a null element at the end of file filespec list.
This should fix the problem of spurious files being sent in response to GET
commands.  ckuusx.c.

Added a new Kermit designator for the Japanese EUC transfer character set:
I14/87/13.  C-Kermit accepts this as an alternate form when receiving a file,
but continues to send the old form, I14/87E.  Later, the I14/87E designator
will be demoted to an alternate form, and eventually retired.  The rationale
for this is to have meaningful character-set designators.  The new form means
Japanese Roman (ISO 14) is designated to G0, JIS X 0208 (ISO 87) to G1, and
Katakana (ISO 13) to G2 (and therefore invoked by SS2).  ckuxla.c.

(Later that day...)  By agreement among all parties (Hiro, John, Joe, me),
exchanged the two Japanese EUC designators, simultaneously with MS-DOS Kermit
3.12 and Kermit-370 4.2.3, so now all three will send I14/87/13, but will
accept both forms.  ckuxla.c.

Added a new block-check type: SET BLOCK BLANK-FREE-2.  Also used by MS-DOS
Kermit 3.12 and Kermit-370 4.2.3.  Just like type 2 block-check, but with 1
added to each byte so the block check will not contain any blanks.  Part of
the "Doomsday Kermit" protocol, used (e.g.) when a 3270 protocol converter
strips trailing blanks from packets.  ckuus3.c, ckcfns.c, ckcfn2.c, ckcfn3.c,
ckuus4.c.  Tested with MS-DOS Kermit 3.12.  Needs more testing.

Moved the logic for ignoring echoed packets from input() to rpack().  This
allows echoed packets to be ignored even if they are corrupted and their
checksum is wrong, so we don't wind up sending NAKs for crunched echoes, which
can result in a hideous slowdown.  Another feature of Doomsday Kermit.
ckcfn2.c.

More Doomsday Kermit work...  (1) Treat incoming ACKs and NAKs as echoed
packets if we are the file receiver (this handles the case where the 3270
protocol converter echoes packets in a different order than Kermit sent them
-- it happens!).  (2) Don't resend() the first ACK if we don't still have a
copy of it -- it will be missing the Send-Init data, and the resent version
might easily have the wrong kind of block check.  (3) Accept E packets with
Type 1 block checks always.  ckcfn2.c.

Numerous changes to resend() to make it work better, etc etc.  ckcfn[s2].c.
See comments in resend().

Tested all of this against Kermit-370 4.2.3 on VM/CMS through two types
of nontransparent 3270 protocol converters and it works great.  Slow, but
solid.  The slowness is because, among other things, each packet sent to
the mainframe gets echoed not once, but twice.

Changed ttinl() to call parchk() only once per protocol operation, not on
every packet.  Previously, parchk() was called on every packet if Kermit's
parity was set to was NONE and the packets contained no parity bits.  This
improvement was accomplished by setting a global (to ckutio.c) flag in
ttpkt(), which is called at the beginning of each protocol operation.
ckutio.c.

Changed UNIX version of zrtol() to strip leading and trailing blanks and
controls from incoming filename to compensate for a bug in Norsk Data SINTRAN
Kermit.  ckufio.c

Added support for IEXTEN (^O/^V) processing in a general way, based on
the existence of the symbol IEXTEN, but for the specific benefit of BSDI/386.
Changes to tthang() for BSDI (and POSIX in general).  New makefile entry
for BSDI.  John T. Kohl, <[e-mail]>.

Changes to tthang() for the IBM RT PC and RS/6000.  Previously, after hanging
up a modem line, it was impossible to use it again, e.g. to dial another
number.  Thanks to Jamie Watson for extensive research into this problem, and
its solution.  ckutio.c.

Added support for advisory locks (lockf()) for SET LINE device for Dell
System V R4 only, in ttlock() and ttunlck(), from Donn Baumgartner, Dell.
ckutio.c.

Added support for nap() via syscall(3112,...) on SVR4 Intel-based systems
if -DNAPHACK is included in CFLAGS.  David Wexelblat <[e-mail]>.

Many prototype fixups from Tim Theisen <[e-mail]> -- mostly arrays
that were referred to as pointers in the prototypes.  Many header files and
modules.  Compiled OK with gcc -Wall.

Dynix PTX uses memcpy, doesn't have memmove.  ckcnet.c.

Added makefile entry for HP-UX 5.21 with WIN/TCP from John Dunlap.

Added support for Mark Williams Coherent 386, from Manfred Prange.

Minor Olivetti X/OS changes from Fulvio Marino.

Received new OS-9 ck9*.c modules from Christian Hemsing.

Discovered that ttflui() (flush communications input buffer) was a no-op for
TCP/IP network connections, at least on UNIX.  It called netflui(), which did
nothing.  Tried using regular ttflui() on a net connection, but the ioctl's
didn't work (at least not on my SUN).  So I filled in netflui() to call ttchk
to see if any chars were waiting to be read, and then to read that many.
Also added code to do this to ttflui() itself in the case where no system call
is available to flush the buffer.  ckutio.c, ckcnet.c.

Fixed code for reading multiline GET commands from TAKE files.  Previously
it failed to trim leading and trailing spaces and control characters.
ckuus6.c.

Added SET LANGUAGE FRENCH.  When translating from DEC MCS to ASCII or Latin-1,
this enables translation of OE digraph to O and E (both upper and lower case).
ckuxla.c.

Minor changes to ckcdeb.h, cdcfn3.c, ckcmai.c, ckcnet.c, ckuusr.c, and
ckuusx.c to support Data General AOS/VS, from Eugenia Harris at DG.
System-dependent modules for AOS/VS still to come.

Updated the Macintosh / Latin-1 translations in ckuxla.c and ckmxla.c
to put Icelandic Thorn and Eth in the same positions as used in the Macintosh
Icelandic character set.

New makefile entry for DEC OSF/1 on (MIPS) DECstation, plus one minor required
change to ckutio.c, from Bill Whitney <[e-mail]> at DEC.  Also
added special herald to ckuver.h, SHOW VERSION info to ckuus5.c.

Added a curses-style file transfer display for local-mode transfers, adapted
from a minimal bare-bones version sent in by Christopher Pratt, APV Baker, UK.
Rewrote it to produce a complete MS-DOS-Kermit-like file transfer display on a
24x80 screen.  Mostly in ckuusx.c, new routine screenc().  Also changed SET
FILE DISPLAY command to include a "curses" option, and SHOW FILE to show the
display mode, and words about it to HELP SET FILE.  This is elected only if
CK_CURSES is defined, which, in turn, is possible only if UNIX is defined.
Compiled and tested OK on SUN-4, Dell SVR4, NeXT, RS/6000, Ultrix 4.2, Encore,
and even VAX/VMS (but on VMS it works only once).  The curses and termcap
libraries add a lot of K to the core image: 491K vs 467K on SUN-4.  The
display is cute, even quite useful.  But on a fast connection (like TCP/IP),
it can slow the transfer down by as much as 100%.  On a serial connection, it
doesn't hurt at all.

Added (nonworking) support for DGUX 4.30 to makefile, ckutio.c, from Chris
Sylvain <[e-mail]>.  Also added herald to ckuver.h, etc.

------------------------------
5A(179) Mon Feb 17 12:46:36 1992

Edit 179 is the first BETA release.  After it was released to the private
C-Kermit Developers and Testers group on Feb 8, a few bugs were fixed and a
few system-dependent changes made.  These are listed in this section.  The
main version number and release date were not changed because of the massive
number of documentation and other files that refer to edit 179, but individual
module version numbers were updated for sanity.

Some minor changes were added within #ifdef GEMDOS (Atari ST) and #ifdef OS2
(OS/2).  The edit number and date have not been changed.

Also found one place in rcvfil() in ckcfns.c where we were storing into a
literal pointed to by cmarg2, which caused the Convex (POSIX) version to core
dump, and probably many other versions too (but naturally, none of the ones I
tested...)  Fixing this uncovered a place in the RECEIVE command parsing code
in ckuusr.c where we were actually strcpy'ing into cmarg2, which was usually
pointing to "".  Fixed that one too.  Bumped the edit number of ckcfns.c from
71 to 72 and ckuusr.c from 81 to 82, so we can tell the difference.

This change in edit 177 was removed:

  Relaxed the restriction on sliding windows that required the user to SET
  WINDOW n on both Kermits.  Now the receiver can determine the window size,
  just like with packet length.  ckcmai.c, ckcfns.c.

It turns out that this prevents C-Kermit from working with other Kermit
software that implements sliding windows incorrectly.  For example, a certain
commercial package always asks for 14 window slots, but then chokes if you
actually try to use them.  Furthermore, it doesn't give its users any way to
change the window size.  Therefore C-Kermit must allow its own SET WINDOW
command to take precedence over the other Kermit's bid.  The #ifdef COMMENT
and corresponding #endif directives were commented out in ckcfns.c and its
edit number was increased to 73.

Increased ttoc()'s timeout interval from 2 to 15 seconds.  For some reason
that I can't figure out, when a timeout actually occurs, AND Kermit is running
under cron under SUNOS, Kermit dumps core (this doesn't happen when it's
running interactively in the foreground, so it's not a bad system call).
Also, made sure the beeps try to come out only when Kermit is in the foreground
(since conoc() was mentioned in the adb $r register dump).

It seems the addition of the -C command-line switch broke the "application
file" feature, when the application file included a definition for a macro
and then executed the macro.  In fact, the -C feature didn't work quite right
either, e.g.:

  kermit -C "echo hi there, define xx echo hello from xx, do xx, echo bye"

The symptom was that when the macro was finished executing, Kermit would
wait for input from the keyboard instead of continuing with the application
file, command-line, or whatever.  Fixed by making a couple tiny changes to
ckuus5.c.

Some Olivetti OXOS changes from Fulvio Marino at Olivetti in Italy, all
within #ifdef OXOS..#endif.  ckufio.c, ckutio.c.

Rearranged #ifdef's in conres() in ckutio.c for sony_news.  Its return
statement, which restored the console Kanji mode, was not being reached.

Also, several minor changes to the makefile.  Added "make pyramid" (Graham
Jenkins, Australia), "make sco3r2lai" for SCO Xenix 2.3.3 with Lachman
Associates Inc TCP/IP (Bob Hain, [e-mail]), "make ptx13" for Sequent
DYNIX/PTX 1.3 (Mark Vasoll, OK State U), corrected "make install" to use
man page directory for the man page (Scott Kramer, SRI).

New 179-level executable for Amiga from Steve Walton.

Fix for whoami() in ckutio.c, in which Kermit could core dump if the user
who was running it did not have an entry in the passwd file (i.e. getwpnam
returned a null pointer).

Removed duplicate declaration of SUB from ckcasc.h.

Another new executable + cksfio.c for Atari ST.

Compiled and tested on SUN, NeXT, Aviion, PC with Sys V/386 R4, VAX/VMS, HP-UX
7.05, Encore 510 UMAX 4.3, Convex C210 OS 9.1 / POSIX, Macintosh, ...
Made new hex files for VMS, Mac.

Interactive Systems Corp fixes from Howard Weiss, Sparta Inc, Columbia, Md.

Released to the general public for testing 18 Feb 1992.

------------------------------
5A(179) Sat Feb  8 20:01:45 1992

Brainstorm: now that Kermit can read packets without terminators, it should
also be able to read packets with printable start-of-packet characters.
Tried it, it works!  Kermit file transfer with NO CONTROL CHARACTERS AT ALL.
This bodes well for the 3708...  ckuus7.c (all I had to change was the SET
{ SEND, RECEIVE } START-OF-PACKET command to accept characters in the
printable ASCII range.)

Changed sr10-bsd make entry from -DBSD4 to -DBSD43.  Added a missing (char *)
cast in ckcpro.w.  Moved unhex() prototype in ckucmd.c to top of file, so it
takes effect even if -DNOICP.  Michael Pins <[e-mail]>.

Changed ckcdeb.h to define UNIX if COHERENT or MINIX are defined, if
UNIX is not defined already.

Removed many unneeded and/or redundant extern declarations from ckuus4.c.
This lets the COHERENT compiler get a lot farther.  But not far enough...

Added some missing HELP commands.  ckuus2.c.

Fixed handling of input lines from command files that are too long for the
command buffer:
 1. Interactive: error message, back to prompt.
 2. TAKE file: error message, back to prompt.
 3. Redirected standard input: error message + "error in background..."
 4. Init file: error message, straight to prompt (or exit).
ckucmd.c, ckuus5.c.

Jay Rouman reported that edit 178 TELNET didn't work right with the MTS
(Michigan Terminal System) telnet server.  Changed Kermit to start out like
a real, vanilla half-duplex NVT.  Also discovered that MTS sends IAC GA, a
two-byte command, but tn_doop() always reads three bytes.  Hence the
screwed-up echo.  Fixed tn_doop() to read a third byte only if the command is
DO, DONT, WILL, WONT, or SB.  Result works fine on all systems previously
tested, as well as on MTS.  ckcnet.c (and msntnd.c -- same code, slightly
adapted, runs in MS-DOS Kermit).

Fixed askmore() to fflush() the "more?" prompt.  This appears to have been
the only casualty so far of -DNOSETBUF (see edit 177).  ckuusx.c.

Made it possible to pass an open file descriptor for a network connection
on the Kermit command line, just like for an open terminal device:

  -l name   = terminal device name, e.g. /dev/ttyh8 or ttx3:
  -l number = file descriptor for an open terminal device
  -j name   = IP network host name or (dotted numeric) address [:service]
  -j number = file descriptor for an open TELNET connection
  -X number = an X.25 address
  -Z number = file descriptor for an open X.25 connection

The -X and -Z are necessary to force the difference between an X.25 address,
which might be totally numeric, and an open file descriptor.  Also, in doing
this, discovered that "-l <number>" resulted in the line getting set to a
random speed.  Fixed this.  ckuusy.c, ckuus2,c and ttopen() in ckutio.c.

Discovered that a second remote disconnect during CONNECT on a pure Sys-V
system crashed the program because SIGUSR1 was armed but wasn't being caught
any more.  (How come this never showed up before?)  Changed conn_int() to
disarm the signal after it is caught.  It is re-armed when CONNECT mode is
entered again.  ckucon.c.

Joe Doupnik reported that when locking shifts are in effect, filenames can
become garbled.  Fixed in ckcfns.c.

Found a case where Kermit was not freeing a discarded packet-receive buffer,
namely when it detects it has read the echo of the packet it just sent (one --
maybe the only? -- source of the onerous "Receive window full" message).  Also
found that sent packets can be echoed more than once, e.g.  by a 3270 protocol
converter: once in place, then once again in the echo area.  Both fixed in
ckcfn2.c.  Now C-Kermit can transfer files with (a newly modified test
version) of IBM mainframe Kermit through a 3270 protocol converter that is
*not* in transparent mode!

Noticed that when C-Kermit is in packet mode, AND parity is not NONE, AND it's
a BSD-based implementation (not System V, etc): (a) ^C^C out of packet mode
does not work, and (b) ^Z suspends Kermit, but leaves the terminal modes
messed up.  Diagnosis: When parity is not NONE on BSD versions, ttpkt() puts
the terminal in CBREAK/NOECHO mode rather than RAW mode.  But it was
forgetting to disable the handling of the interrupt and quit characters.
Cure: Added this code to ttpkt() in ckutio.c (just copied it from the
now-defunct LPASS8 section).

Added -S command-line argument.  Means "Stay" in Kermit after executing
command-line action arguments, i.e. enter the interactive command parser
(if any), similar to MS-DOS Kermit's STAY command.  ckcmai.c, ckuusy.c.

Added -C command-line argument.  Takes a quoted string which is one or more
interactive commands.  The commands are defined as a macro called cl_commands
and are executed when Kermit starts up, after the init file, after the other
command-line arguments, before any "application file", and before entering
interactive mode.  The cl_commands macro remains defined for subsequent use if
desired.  Only #ifndef NOICP and NOSPL.  -C does not count as an "action
command", even if it contains interactive versions of action commands
(CONNECT, SEND, etc), so if no other action commands were given on the command
line, the interactive command parser is entered after these commands are
executed.  To defeat this behavior, include EXIT in the list of commands.
ckuusy.c, ckcmai.c.

Fixed bug in GET command noticed by Max Evarts.  In the multiline version of
GET, if a local filespec was given, it was erroneously converted to "bland
form" (e.g. lowercased) instead of being used literally.  Actually, that was
only one symptom.  In many cases, the "as-name" did not work at all during
file reception.  ckcfns.c.

Added support for Motorola CPU type symbols m68k and m88k for \v(cpu) from
Ron Heiby, Motorola.  ckuver.h, ckuus5.c.

temp buffer was being written into before it was allocated in ckucon.c.
Now fixed.  Noticed by Bruce J Moore.

genbrk() call in ckutio.c was lacking an argument (used by V7 only).
Also noticed by Bruce J Moore.

Got new ckiker.boo for Amiga (for edit 178) from Steve Walton.

Got C-Kermit 5A(178) for the Atari ST from Bruce J Moore <[e-mail]>.
New cksfio.c, ckstio.c, ckscon.c, plus minor changes to the ckc*.* and cku*.*
files, all within #ifdef GEMDOS..#endif.

Added makefile entries for Motorola Delta 68K and 88K systems from Ron Heiby
at Motorola.

Added makefile entry for Silicon Graphics Iris Indigo IRIX 4.0 from Nelson
Beebe at U of Utah.

Finally, against my better judgement, added a -DNOSHOW build option to remove
the SHOW command and all supporting code in a last-ditch attempt to get
ckuus4.c to compile for Coherent.  If that works, then maybe MINIX will work
too.  Added "coherentmi" (minimum interactive) entry to makefile that
deselects just everything possible, including SHOW.  ckuus[r245].c, makefile.

------------------------------
NOTE: The history of all version 5A edits prior to the Beta edit, 179, have
been moved to the (big) file CKU178.UPD.

------------------------------
END OF CKCKER.UPD