GNU Diff, Diff3, SDiff and Cmp Version 2.0
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                     Amiga Port by Carsten Steger
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Hi everyone!

I recently got back from a 2 months' holiday and discovered that there
was a new version of GNU Diff, so I decided to port it right away.

In this directory you  will find the complete source code of GNU Diff.
All the modifications  I had to make to get it to compile and run with
SAS/C 6.1  are bracketed by  '#ifdef AMIGA' constructions. I also have
included a  diff  file  (generated by diff 2.0,  of  course :-) ) that
contains the context diffs to the original distribution.

Diff and cmp should run  under any OS version.  There's one difference
to diff under UN*X:  You can't use the '-l' resp.  '--paginate'  flag.
This is due  to the fact that a) I have found no  pr program available
on the Amiga, b) I didn't want to port one, since I'm not going to use
this feature, c) the SAS/C fork(l|ve) routines crash the system if you
set the  stdout file of the child process  to the stdout of the parent
process (which you have to, so that these options make any sense), and
d) if you  use the DOS 'System' call to start an asynchronous process,
it closes its  std(in|out) files upon exit, in  which case the  parent
process  can't  use  the  stdout  file  after  that.   If  you  really
absolutely have to use a feature like that, you can easily achieve the
same  effect  by piping  the  output of diff  through pr or  a similar
utility: diff options file1 file2 | pr.

NB: The files in the '-x' resp. '--exclude' option are specified  with
UN*X wildcards (as stated in the maunual): Use *.o to get  #?.o! (This
is because  the  exclusion is  done  internally using the  GNU  regexp
library.)

Diff3  only runs under OS 2.0 or higher. This is because I  had to use
the 'System' call  to  run the two child processes that  diff3 spawns.
Again, the SAS/C routines crash the system.

Sdiff, too, only runs  under  OS 2.0  or higher for the same reason as
above. Please note that if you break the program with C-c or by typing
the  'q' command within sdiff, it  might take some time to  clear  the
pending pipe in- and output. Otherwise the  program should run exactly
as described in the  maual.   The default  editor  that  sdiff uses is
memacs from the good old Workbench. You should  have  it  somewhere in
your path.  Otherwise you have to set the EDITOR environment variable:
setenv EDITOR <your favourite editor>.

To  install the programs  you  just copy them to a  directory  in your
path: copy c/#? <directory>

The documentation  is included  in  the  diff.texi  file. Because  not
everybody has  the  texinfo package,  I  also have  included a  TeX-ed
version  of the manual.  You  can  print  diff.dvi (with a TeX printer
driver) to get a hardcopy of the manual. If you use emacs on the Amiga
you should install the #?.info#? files in GNUEMACS:info. You will have
to make an appropriate entry in the dir file.

If you  have  any  problems that you think are  specific to the  Amiga
version of diff, e.g. you get a different result on the Amiga than the
result you get on a  UN*X machine,  you should report them to  me.  My
E-mail address is:

carsten.steger@informatik.tu-muenchen.de

If you think you have found any  other bugs, you should report them to
the GNU project. Their address is:

bug-gnu-utils@prep.ai.mit.edu



Have fun!

Carsten