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- GNU Diff, Diff3, SDiff and Cmp Version 2.1
- ------------------------------------------
-
- Amiga Port by Carsten Steger
- ----------------------------
-
- Hi everyone!
-
- 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 6.2 are bracketed by '#ifdef AMIGA' constructions. I also have
- included a diff file (generated by diff 2.1, of course :-) ) that
- contains the context diffs to the original distribution.
-
- Diff should run under any OS version with one exception: If you use
- the '-l' resp. '--paginate' flag you have to have OS 2.0 or higher.
- This is due to the fact that I had to use the 'System' call to run pr.
- For those of you that don't have pr: it is obtainable by ftp at
- amiga.physik.unizh.ch. Download the file amiga-textutils-1.3.lha that
- comes with David Gay's brilliant port of GNU Emacs.
-
- There's a couple of minor differences to diff under UN*X: The current
- directory is referred to by "". So if you want to diff a directory
- <dir> against the current directory, type 'diff <dir> ""'. If you
- want to change the line- and line-group-format, here's how it's done
- on the Amiga (see also the sections 'Line Formats', 'Line Group
- Formats', and 'Detailed If-then-else' in the manual):
-
- On UN*X you would type:
-
- diff \
- --old-line-format='-%l
- ' \
- --new-line-format='|%l
- ' \
- --unchanged-line-format=' %l
- ' \
- old new
-
- On the Amiga you have to type this as (type <RETURN> after each '+'):
-
- diff "--old-line-format=-%l+
- " "--new-line-format=|%l+
- " "--unchanged-line-format= %l+
- " old new
-
- Summing up: if you want to insert a newline into an argument, type '+'
- followed by <RETURN>. This seems to be the only way to do this with
- the Commodore shell.
-
- 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.
-
- 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>.
-
- Cmp runs under any OS version.
-
- 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. For those of you that don't
- have TeX: An excellent port of TeX for the Amiga by Georg Hessman
- (PasTeX) is obtainable by ftp at ftp.uni-passau.de.
-
- If you have the infamous Am*gaGuide, I highly recommend that you use
- MakeInfo by Sebastiano Vigna and Reinhard Spisser (on Fish disk 787 or
- by ftp at amiga.physik.unizh.ch) and convert diff.texi into the
- Am*gaGuide format for online documentation.
-
- If you use GNU Emacs on the Amiga you might want to install the
- #?.info#? files in GNUEMACS:info too. You will have to make an
- appropriate entry in the dir file in this case.
-
- 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
-