1-changes

功能丰富的串口通讯程序

    * Cleaned the script module a bit and also the routine for
      detecting the zmodem auto-download signature.
    * Revised the interface for the settings window. Seyon now changes
      the parameters as soon as the user clicks on them instead of
      waiting until the 'Ok' button is pressed. A bit less efficient
      perhaps, but more natural. You can now keep the settings window
      open and try out different settings without having to close the
      window in order to effect your changes.
    * Transient windows no longer concealed by their parents, even if
      they don't have the input focus. Didn't you just hate it when
      those windows used to disappear behind their parents and you had
      to move their parents in order to see them? No longer.
    * The exit and cancel buttons are no longer hidden when they are
      inactive. Instead, they are now visible all the time, but greyed
      out when inactive. Looks better this way.
    * When you choose f.delete (twm/mwm) or QUIT (olwm/olvwm) on
      Seyon's top window (the command center), Seyon now exits
      gracefully as if you clicked on the exit button (but with no
      confirmation). Seyon will beep if you try to do that while
      you're not allowed to exit though. Even though it is safe to do
      so, I do not recommend this as the way to exit Seyon. Also,
      never do this on any other Seyon window (like the dialing
      directory) or Seyon won't exit gracefully. (In general, if Seyon
      gets stuck and you have to kill it, do that by

           kill <lowest-seyon-pid> 

      from another xterm. Seyon will quit gracefully this way as
      well).
    * Added two new script commands: flush and purge. The first
      flushes the mdoem, i.e. discards data written to the modem but
      not transmitted and data received but not read. The second Reads
      and discards all data coming from the modem for the duration of
      one second.
    * The manual page now has a listing of all the keywords the script
      command 'set' accepts.
    * Revised the idle guard routine so that the idleGuardInterval is
      now observed properly.
    * New default font. I suspect most people will hate it, so it may
      be removed from the next version if I hear many gribes about it.
    * New error popups. Now Seyon pops up an dialog box with an
      explanation of the error, possible causes, and suggested action
      when an error occurs. Not all errors are handled this way yet,
      but the most severe ones are. Please do give this version some
      abuse (e.g. invoking it with no modem, wrong modem, locked
      modem, incorrect command-line switch, or even doing something as
      evil as 'kill -SEGV <lowest-seyon-pid>').
    * Seyon now has an icon. Try iconifying the command center (or the
      dialing directory) to see it.
    * Arnold is out, a pretty face is in.

Version 1.8:
    * The transfer window has been completely revamped, just like the
      dialing directory (see below). Only the protocol titles now
      appear in the window (those can be as descriptive as you like).
    * Since the dialing directory and transfer console no longer show
      the actual phone and protcols files but only a pretty summary,
      the syntax of those files has been made much more flexible. They
      now accept whole-line comments and blank lines, so you can put
      as much comments there as you like. Examples are provided.
    * Provided examples for the phone and protocols files with
      extensive documentation (thanks to the new syntax fexibility).
      Please look at them to take full advantage of the convenience
      they provide.
    * The dialing directory have been completely revamped. No more
      ugly keywords on the display, replaced by a standard, concise,
      and informative dialing directory. The keywords still work of
      course, it's just that you see only their summary on the dialing
      directory, rather than the phone file syntax itself.
    * For the new dialing directroy, added the resource dialDirFormat.
      This is a string that specifies the format of the dialing
      direcotry. The default is '%-15s %-15s %6s %1c%1c%1c %1c%1c %s'.
      Briefly: the fields represent the host name, number, the baud
      rate, bits, parity, stop bits, whether there is a custom prefix,
      suffix, and the script name. You can understand more what each
      field refers to by comparing with dialing directory, fields that
      use the current setting (via the keyword CURRENT) are designated
      by a question mark. Notice that you cannot change the order the
      items in the dialing directory appear at, only the format.  For
      example, since the numbers I call are all 7-digits, my host
      names are short, and I never use baud rates above 9600, my own
      format string is %-10s %-8s %5s-%1c-%1c-%1c %1c%1c %s, the
      default is just too wide for my taste, and I like dashes between
      the bits, parity, ans stop bits fields.
    * Renamed the resources dialAutoOpen and dialAutoClose to
      dialDirAutoOpen and dialDirAutoClose, respectively, to reflect
      their functions more precisely.
    * Add an important feature: the ability to completely specify the
      communication parameters by number of bits (charcter size),
      parity, and stop bits. Like eeverything else in Seyon, you can
      set those in about a half dozen ways. First, the resources
      defaultBIts (default is 8, valid arguments are 5, 6, 7, and 8),
      defaultParity (default is 0, valid arguments are 0 (no parity),
      1 (odd parity), and 2 (even parity), and defaultStopBits
      (defaults is 1, valid arguments are 1 and 2). You can set them
      in a script through the keywords bits (e.g. set bits 8), parity,
      and stopBits. You can also set them in the dialing directory by
      specifying the fileds BITS, PARITY, and STOPB (you can also give
      the argument 'CURRENT' to those fields. Finally, you can set
      them interactively under the settings window (in two ways,either
      directly or via a short cut).
    * The resource sevenBitMask and the script keyword 7bit are gone.
      they superseded by the above.
    * Added a new button: 'About'. Among other things it tells you
      exactly what revision number of Seyon you're using. The help
      button is moved under About.
    * Some cosmetic changes; for example, Seyon messages in the status
      area are now centered.
    * Added support for fallback resources. Seyon no longer need its
      app-defaults file except for color (using color in fallback is
      not a good idea).
    * Added a new button under the 'Misc' window: Suspend. This just
      suspends the terminal and runs a local shell in the terminal
      window. 
    * Seyon now supports two new speeds: 56700 and 115200 bps. This is
      avialable only for linux, as there is no portable way of doing
      it. This feature is not guaranteed to stay.
    * Added a new script command: send_break. Should be obvious what
      it does.
    * Fixed a nasty bug (race condition) when Seyon is invoked with
      the -script switch. That should work fine now.
    * New resource: dialAutoOpen. If set to on, the dialing directory
      is automatically poped up when Seyon is started.
    * The resource funMessages is now used to specify the messages
      only. Use the new resource showFunMessages to enable or disble
      the display of those messages (defaults to on).
    * Added a new feature: the ability to send a string when the
      session (user's input to the terminal) is idle longer than a
      specicified amout onf time. The string is sent automatically at
      that regular interval to keep the session alive (e.g. avoid
      auto-logout). The resources governing this feature are:
      idleGuard (default is off), idleGaurdInterval(default is 300
      seconds), and idleGuardString (default is " ^H", i.e. space then
      backspace). The corresponing script keyword is idleGuard (you
      can only enable or disable it in a script). The string is sent
      with the current translations, so it would be <Spc><del> if
      backspaceTranslation is on.
    * You can now put '~' in 'transmit' to effect a pause of 1 second,
      i.e. transmit "ATZ~~ATS0=0" is equivalent to
                    transmit "ATZ"
                    pause 2
                    transmit "ATS0=0"
    * Changed the default color for toggles to look better with Xaw3d.
      If you're not using Xaw3d, I advice to get it and link Seyon
      with. Seyon looks much "cooler" with Xaw3d.

Version 1.7:
    * Revied the location of transient popups. No more dangling
      windows. Now transiet windows pop up at a small offset from the
      the top of the parent window instead of its buttom.
    * New resource: dialAutoClose. If set to 'on', the dialing
      directory will be automatically closed after a successful dial.
      Defaults to 'off'.
    * The baud and port dialogs in the settings window now popup
      instead of cluttering the window and causing it to be too large. 
    * Added a new keyword for the dialing directory BPS and BITS
      fields: CURRENT (can be abbreviated to CUR). If this is used,
      the current baud rate and/or bit mask will be used for that
      host. Not sure if this would be useful. Notice that if the BPS
      or BITS field is missing, the default values (as specified in
      the resources) would be used.
    * Added two new fields in the dialing directory: PREFIX and
      SUFFIX. If either is present, it overrides the default specified
      in the resources. See examples in the included phonelist file.
      These fields also accept the CURRENT  keyword as above.
    * All script commands and keywords are now case sensitive.
    * Revised newline translation. Three translation modes are now
      available: no translation, newline to carraige return, and
      newline to carraige return / line feed. Consequently, the
      resource newlineTranslation is changed from boolean to string,
      whith three possible keywords corresponding to the above: nl,
      cr, and cr/lf. The script keyword nl is also changed to
      newlineTranslation to coincide with the resource, and accepts
      the same keywords.
    * Added 'View Log' under the misc window, but currently does
      nothing. 
    * New script command 'echo'. This just behaves as the usual echo
      shell command and prints its argument to the terminal (does not
      send it to the modem, use 'transmit' for that). This command
      supercedes the old command under the same name, which is now
      more appropriatetly called 'debug'.
    * Essentially got rid of the busy waits in the program -- even for
      systems that do not have usleep -- by using Seyon's own usleep
      if the system doesn't have one. (written by [e-mail]). 
    * Seyon now does not allow the user to exit the program while it
      is executing an externala command until that command is finished.
      (this is a feature, since exiting while a child process is still
      running can lead to a lot of trouble).
    * The default color for monochrome displays is now black on white.
      Earlier versions tried to use color even if none is vailable, so
      the color combination led to unreadable menus on monochrome
      displays. Note that if you have a color display you must put
      something like:
                #ifdef COLOR
                *customization:         -color
                #endif
      in your Xdefaults file, or Seyon (as well as other X
      applications) will be monochrome even on your color setup (but
      you already know that, don't you :-).
    * Various changes to accomodate SunOS 4.1 (thanks to Peter Davies
      for pointing most of those problems).
    * New configuration script. This script probes your system looking
      for the functions your system has and automatically writes
      config.h for you. Tested only under bash and ksh, not sure if it
      would run under plain old regular sh. Give it a try.
    * YADBC, yet another default background color. This one is more
      reminiscent of Motif.

Version 1.6
    * You can now change the modem device interactively from the 'Set'
      console. You can even do that in a script, use the keyword
      'port'.
    * Support for the environment variable MODEM has been dropped.
      You can set the modem device on startup either via the resources
      or at the commend line.
    * Running a script by the switch '-script' in startup was broken
      (apparently for some time but nobody told me, I found out by
      accident). It has now been fixed.
    * You can now start a script interactively from the command
      center. Use 'Script' under the 'Misc' button.
    * Fixed the lock routines. Seyon now supports two types of lock
      files: ascii (compatible with HDB uucp), and binary (for other
      uucp programs). You choose which type of lock interface by
      defining the appropriate flag in config.h before compiling.
      Thanks to [e-mail] for supplying information about the
      different types of lock methods. Anthony Rumble originally
      pointed out the problem.
    * Added a new resource, hayesHangup. If this set to on, Seyon will