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Text File
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1991-05-20
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8KB
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177 lines
Wolf Faust
Am Dorfgarten 10
W-6000 Frankfurt 50
Germany
Tel.: ++49-69-5486556 CET (voice)
Fido 2:243/43.5 (Tel: ++49-6173-2544)
UUCP:cbmvax.commodore.com!cbmehq!cbmger!venus!wfaust
The files and programs that make up the Ed-Replacement are
Copyright ©1991, Wolf Faust. Ed-Replacement is freely
distributable and may be used in commercial products only by ASDG
Incorporated in any way.
The author and any other contributors take no responsibility for
the consequences of its use.
No charge may be made for it's distribution, except for a nominal
media fee.
Revisions
---------
01.01.91 Version 1.0 - not released
07.01.91 Version 1.0a - need for stack decreased
- free memory is checked for 195000Bytes
before starting CED
01.02.91 Version 1.0b - Sticky option improved
- New routine added: now CED environment gets
loaded with one exception...
- not released to public
03.02.91 Version 1.0d - Bugs in CED startup fixed
- not released to public
17.02.91 Version 2.0a - Pattern matching added
- a lot of smaller things got improved
- KS 2.0 calls added
22.02.91 Version 2.0b - Ed's strike on lowmem systems
with dormant CED is gone... ;-)
27.03.91 Version 2.0c - Ed sometimes didn't fully recognize given
patterns (nobody discovered anyway ;-)
27.03.91 Version 3.0 - Pattern matching is now internationalized
and allows accents (for both: KS 1.3 and KS 2.0!!)
12.05.91 Version 4.0 - bug in KS 1.3 pattern matching removed
- KS 1.3 "task held" if ED can't find CED removed
- new startup supports greater command lines
(only possible under KS 2.0...)
20.05.91 Version 4a - Startup changed
About Ed-Replacement
--------------------
"Ed-Replacement" is a program well designed for CEDPro version
2.12. It cures many problems with older versions of ED,
distributed by ASDG Inc.. Also many nice features have been
added. "Ed-Replacement" consist of following files:
ED - the executable
Ed.info - an icon? ;-)
Readme - this readme
Liesmich - the german readme
Improvements and Bugfixes
-------------------------
1. As described in the manual, the 'old' -Sticky option only
works with exactly(!) one given filename before the option:
"Ed filename -Sticky"
This behaviour has been changed because of the many problems
associated with calling programs like newsreaders and compilers.
Now you can specify -Sticky first and after this up to 10(!)
filenames. For compatibility reasons the old syntax is still
allowed, so following commands are equal:
"Ed filename -Sticky" == "Ed -Sticky filename"
also this one works now:
"Ed -Sticky filename1 filename2 filename3 filename4"
Please note: in case CEDPro is invoked with the -sticky option,
your default environment will not be loaded. In this case you
have to type <Amiga>-e to load your environment.
Also, if Ed is invoked with the -Sticky option and with more(!)
than one filename, Ed now changes a "" to "unknown". This must be
done because of the filename handling from CEDPro which easily
causes deadlocks... . So
> ED -Sticky "" file.c ===> is changed to ====> ED -Sticky unknown file.c
but >ED -Sticky "" is still unchanged...
2. Given options (-Sticky, -o, -r, -i) are now working as
descripted in the original handbook. The orginal Ed<->CEDPro
sometimes didn't recognize given options. Also "-keepio" now
results in an extra textview named -keepio. "-keepio" only works
with CED! In most cases the original Ed didn't allow filenames
with "-" at the beginning. This is now also improved. Any
filenames except the options (-i, -o, -r, -sticky) itself are now
allowed as valid filenames.
3. Before attempting to load CED, Ed now checks for enough
memory. So 'Ed' is getting more secure with low memory systems.
'ED' will start CED by using System() instead of Execute() under
KS2.0 (version >=36). System() fixes some bad behaviours of
Execute().
4. Ed is now reentrant, so you can make it resident. Some shells
(like WShell) check for purity. These shells will prompt you a
warning, saying ED is not pure. Ignore it by disabling the check
for purity (i.e. WShell users should make it resident with:
"resi Ed -ignore")
5. Ed now can do pattern matching! Ed uses the KS 2.0 pattern
matching routines if possible. Because of this, there are
different abilities under different Kickstart versions. Here are
the available tokens:
Kickstart 1.3 & Kickstart 2.0 (version < 37)
? Matches a single character.
#? Matches all expressions
* Same as #?; matches all expressions
Kickstart 2.0 (version > 36)
? Matches a single character.
# Matches the following expression 0 or more times.
(ab|cd) Matches any one of the items seperated by '|'.
~ Negates the following expression. It matches all strings
that do not match the expression (aka ~(foo) matches all
strings that are not exactly "foo").
[abc] Character class: matches any of the characters in the class.
a-z Character range (only within character classes).
% Matches 0 characters always (useful in "(foo|bar|%)").
* Synonym for "#?"
"Expression" in the above table means either a single character
(ex: "#?"), or an alternation (ex: "#(ab|cd|ef)"), or a
character class (ex: "#[a-zA-Z]"). The patterns are fairly
extensive, and approximate some of the ability of Unix/grep
"regular expression" patterns.
So "Ed #?.c" will load all your C sources in the current
directory. Sorry, because of size there are no logical functions
allowed under KS 1.3, but all tokens are upwards compatible.
6. Under KS 2.0 (1.3 too???), some versions of the original Ed
doesn't show up with a given file in "Ram Disk" because of the
space between "Ram" and "DISK". The new ED handles spaces right.
7. Accents (öäüß...) in a filename or path confused the original
Ed and two textviews appeared instead of one (bad Parser). Fixed
in the new Ed.
8. The originaly Ed got confused with a given filename: ""
This is fixed in the new Ed.
9. The option "-R" (load Ced and stay dormant) has been changed:
the behaviour of the original Ed was a bit irregular. Sometimes
an additional given file was loaded and sometimes not. Now "-R"
must be given as first parameter! Any given filename causes the
option "-R" to be ignored and the file(s) will be loaded in a
textview!
10. When to many long filenames+paths are given from the CLI, the
original Ed simply failed (no more than 132 chars allowed...).
This restriction is now removed and there are no restrictions!
11. The GetPath() routine in the original Ed had a bug which may
cause a Lock not to be unlocked. Fixed in the new Ed.
12. Communication between the original "ED" and "CED" may cause a
guru or faulty habits because of bad programing (no
Forbid()/Permit(), no GetMsg...). Fixed in the new Ed.