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1995-08-22
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JP Software
4DOS Update Documentation
Version 5.51 -- August 22, 1995
Copyright 1988 - 1995, JP Software Inc., All Rights Reserved. Published
by JP Software Inc., P.O. Box 1470, E. Arlington, MA 02174 USA, (617)
646-3975.
Check through this file for a comprehensive list of what's changed since
version 5.5. Additional documentation on new features is in the online
help.
Some of the descriptions below may be more detailed than you need; if
you aren't using a feature, feel free to skip to the next item. If you
are new to 4DOS with version 5.51, you can skip this file entirely, and
begin with the 4DOS Introduction and Installation Guide.
This file is divided into the following sections:
General Features and Enhancements
Startup and Initialization
Command Changes
Variables and Variable Functions
Technical and Compatibility Changes
Bugs Fixed
Significant new features and those which affect most users are marked
with "**" in the lists below. Other items discuss smaller or more
technical changes.
This file is formatted at 58 lines per page, and contains form feeds and
page footers. It can be viewed with a file viewer such as the 4DOS LIST
command, or printed on most PC printers using the command:
copy updat551.doc prn
Printing it with a program that formats the pages is not likely to work
due to the formatting included in the file.
(8/95-5.51A)
4DOS 5.51 [8-22-95] UPDAT551.DOC page 1
4DOS 5.51 Change List
General Features and Enhancements
---------------------------------
=> ** 4DOS now supports beta versions of Windows 95 including long
filenames, LOCK and UNLOCK commands, and several other features.
See WIN95.DOC for additional details before using 4DOS under
Windows 95.
=> ** 4DOS now supports PC-DOS 7 REXX batch files. Any .BAT file with
"/*" at the beginning of the first line will be passed to
REXX.EXE for processing, just as it is under PC-DOS 7
COMMAND.COM.
=> 4DOS now supports batch file line continuation. Lines terminated
with an escape character (Ctrl-X) will have the escape character
removed and the next line appended.
Startup and Initialization
--------------------------
=> 4DOS will not inherit aliases, .INI settings, etc. from a primary
shell under Windows 95 if disk swapping is used in the primary
shell. This is because the file handle for the primary shell's
swap file cannot be passed properly to a secondary shell under
Windows 95. Also a message is now displayed when 4DOS starts as
a secondary shell under Windows 95 (as it did previously for Win
3.x).
=> Added two new .INI directives:
ListExit = Key (Esc): Allows you to map the keystroke used
to exit the LIST command.
RexxPath = Path: If RexxPath is set, 4DOS will look at .BAT
files to see if they're REXX files (begin with a /*); if they
are 4DOS will insert the program name specified in RexxPath
in front of the batch file name and reexecute it. If you're
running PC-DOS 7, 4DOS will default to using "REXX.EXE" for
the RexxPath directive.
Command Changes
---------------
=> ** COPY / DEL / MOVE / REN: When using the prompt (/P) option, an
ESCAPE will now cancel further processing for that argument,
rather than canceling prompting and continuing with the
operation.
4DOS 5.51 [8-22-95] UPDAT551.DOC page 2
=> DIR: Added the /X switch to display both the long and short
filenames (under Windows 95 only).
=> GOTO: Made a change to try to accommodate both the old label
style (first word only) and the new style that permits multi-word
labels.
=> IFF: Changed the way the command processor handles piping to
IFF. You can now pipe to an IFF and the pipe information will be
passed to the command(s) following the IFF (previously it was
ignored).
=> LIST: Now defaults to listing (all files ("*.*") if the argument
is a directory name. Also printing the file now displays a
header (filename, date, and time) on the first page.
=> LOCK, UNLOCK: Added these new Win95 commands. See the online
help for syntax and other details.
=> ON: Added a new ON ERRORMSG option. ON ERRORMSG is the same as
ON ERROR, but displays the usual error message before executing
the specified command (ON ERROR suppresses the error message).
=> SETDOS: You can now change the default description filename with
the SETDOS /D switch. If the /D is followed by a double quote,
the string inside the quotes will be used as the description
file. For example:
setdos /d"files.bbs"
The SETDOS /D[0|1] switch (to disable or enable description
processing) is still available.
=> TYPE: Will now check for a filename of "NUL" and allow it.
However TYPE will trap attempts to type any other character
device.
=> VER: Displays "(Win 95) DOS" under Windows 95.
Internal Variables and Variable Functions
-----------------------------------------
=> Added two new internal variables:
%_CI returns the insert-mode cursor shape, as a
percentage (see SETDOS /S)
%_CO returns the overstrike-mode cursor shape,
as a percentage
4DOS 5.51 [8-22-95] UPDAT551.DOC page 3
=> %_WIN: Now returns "30" under Windows NT and "40" under Windows
95.
=> @ATTRIB: Added an optional third argument. The new syntax is
%@ATTRIB[filename[,NRSHA[,p]]]. The 'p' tells ATTRIB to accept a
partial match; i.e. if the file has "RHA" attributes set:
%@ATTRIB[filename,R] fails, because @ATTRIB
wants an exact match
%@ATTRIB[filename,R,p] succeeds
=> @READSCR: Added offset capability when "+" and "-" are used in
the row and column (e.g., "READSCR[-2,0,10]"). The ofsset is
relative to the current cursor position.
=> @TIMER: Now separates the hundredths digits with the default
country decimal character, not a hard-coded decimal point.
Technical and Compatibility Changes
-----------------------------------
=> The version number now uses the default decimal separator for the
current country (e.g. "2,51" rather than "2.51" for Germany).
=> Improved compatibility with APPEND in OS/2 DOS sessions. See
APPNOTES.DOC for details.
Bugs Fixed
----------
=> Fixed a minor bug in UNKNOWN_CMD alias processing which caused
the command processor to remove the command argument if it was
(1) an existing file, and (2) not an executable file.
=> ?: Fixed a problem with the ? prompting command only displaying
the first word of the prompt.
=> DEL: Disabled "fast deletes" with /Q when /A:... is used to
specify attributes. Previously the /Q overrode the /A: and the
attribute settings were ignored.
=> DO: Fixed a problem with ITERATE inside nested IFFs inside DOs.
=> FFIND: Fixed a problem which sometimes caused FFIND to loop
endlessly printing blank lines; also fixed a problem with FFIND
not searching past the first 64K of the file in a text search.
=> INKEY: Fixed an obscure problem with combining the /P and /K
switches and then entering invalid input.
4DOS 5.51 [8-22-95] UPDAT551.DOC page 4
=> LIST: Fixed a problem with searching through very large pipes
with LIST /S.
=> SCRPUT / VSCRPUT: Now preserve leading quoted whitespace in the
text argument.
4DOS 5.51 [8-22-95] UPDAT551.DOC page 5