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1994-06-06
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SNOOPDOS HISTORY
----------------
Version 1.7, 16 December 1992
Fixed a small bug in startup code that would potentially crash under
AmigaDOS 1.3 if dos.library couldn't be opened. Someone on Usenet
(where else!) reported this to me; sorry, I've forgotten your name.
Added -zd option to send SnoopDos output to the debugging terminal
(usually connected to the serial port), alongside Enforcer and
Mungwall output. Thanks to Dave Parkinson for this suggestion.
Added -z+$ option to open file $ in append mode. This allows long
SnoopDos logs to be built up over a period of time. It also allows
you to display the logfile while SnoopDos is still active, which
can be quite useful.
When redirecting the output of SnoopDos to a non-interactive
device like a file, output is now buffered in 8K chunks. This
speeds up file operations by about 20%. If you would prefer
unbuffered output, use the new -n option.
The default window now sizes itself to suit the system font, so that
it always opens to a width of 77 characters by 13 lines if possible.
The background Snoopdos process now inherits the current directory
from the CLI so that log files end up in the correct location.
Changed embedded version string to more closely conform to CBM standard.
No longer adds carriage returns to end of line, unless they are turned
on with -s or output is to the serial device via -zd. This prevents
double-spacing on some systems.
----------------
Version 1.6, 19 August 1992
Fixed a small bug introduced in V1.5 which caused almost any program
run from the Shell to have its CurrentDir() and Lock() calls ignored,
due to improper string comparisons in the SnoopDos code. This made
the -i option fairly useless. Now, Lock() and CurrentDir() are ONLY
ignored for the CLI and Workbench.
Note: Someone started distributing a hacked version of SnoopDos 1.6
that included code to add a backdoor to the AmiExpress BBS if it
happened to be running on the same computer. For this reason, please
delete all copies of SnoopDos 1.6 that you come across.
----------------
Version 1.5, 7 July 1992
Another minor update to fix a bug reported by Matthias Scheler and
Jörg Höhle. DeleteFile() would sometimes return an incorrect value,
causing programs to think a delete had suceeded, even when it failed.
Thanks, Matthias and Jörg.
Also added a new option, -i, which tells SnoopDos to ignore Lock()
calls from the shell and CurrentDir() calls from either the shell
or Workbench(). This stops SnoopDos going into overdrive every time
the Shell tries to search the command path for a command or
Workbench decides to check up on all the mounted disk devices.
Finally, added some additional checking to the exit code to make it
more robust, since there was still the very occasional lockup if
there was a lot of file activity when you exited. My comment for
version 1.2 not withstanding, I think it's _really_ safe now! :-)
----------------
Version 1.4, 21 October 1991.
Very minor update -- fixed the -z option so that it doesn't crash the
system if you accidentally leave a space between the 'z' and the
filename. Instead, it works as you would expect.
----------------
Version 1.3, 8 February 1991.
Fixed small bug in startup code. Previously, running SnoopDos with a
command line like "RAM DISK:SnoopDos" would cause SnoopDos to treat
the "DISK:SnoopDos" portion of the command name as the first parameter.
Works fine now. Also reduced code size by about 2K.
----------------
Version 1.2, 27 January 1991.
The "deadlock when you quit SnoopDos" bug reared its ugly head again;
it turns out that the V1.1 fix still left a very small window where
deadlock could occur if you quit during heavy file activity. This time,
I think it's really gone for good.
----------------
Version 1.1, 30 October 1990.
Minor update. Previously, SnoopDos would occasionally deadlock if
you tried to remove it during heavy file activity. This has been
fixed. Also, there was a small bug which appeared when programs set
their current directory to the boot device (NULL lock). This has
also been corrected.
----------
Version 1.00, 9 September 1990.
First public release. After unexpectedly being sent to the US for
the summer (new job), I finally got around to tidying it up.
New features include monitoring of DeleteFile() and CurrentDir(),
support for alternative devices/files (such as the serial port),
colour now optional, a few other cosmetic changes.
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Version 0.93, 2 June 1990.
Added -X option to monitor Execute() calls and reworked assembly
language glue a bit to make it easier to modify in future.
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Version 0.92, 31 May 1990.
Strange bug seemed to manifest itself when Rez was used; the first
time a resident program was loaded, the display got messed up. Turns
out that Rez calls Open() from within LoadSeg(). Such nesting of
DOS calls is now indicated by prefixing the process name printed
for any nested operations with a '>'. When the nesting is completed,
'> Done' is displayed.
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Version 0.91, 29 May 1990.
Silly bug meant Snoopdos couldn't open its console window unless
Conman was installed. Now fixed.
Improved the way DOS library is patched to make it somewhat more
robust (it now works properly with UnixDirs).
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Version 0.9, 28 May 1990.
Initial Beta release. No doubt people will find lots of bugs.
----------