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History

Andrew Moore 5a5100e3af added (unsiged) cast to avoid int overflow removed REGEX directive		1993-08-09 21:34:11 +00:00
..
test	Use ./foo.sh, so scripts work if . is not in $PATH.	1993-08-02 16:42:08 +00:00
buf.c	Consolidate mark code - no functional changes or fixes.	1993-07-02 06:16:28 +00:00
cbc.c	POSIX ed version 0.6 by Andrew Moore (alm@netcom.com).	1993-06-18 13:00:14 +00:00
ed.1	fixed undo within a global command (would corrupt the buffer)	1993-06-26 06:47:21 +00:00
ed.h	added (unsiged) cast to avoid int overflow	1993-08-09 21:34:11 +00:00
Makefile	added (unsiged) cast to avoid int overflow	1993-08-09 21:34:11 +00:00
POSIX	fixed undo within a global command (would corrupt the buffer)	1993-06-26 06:47:21 +00:00
re.c	added (unsiged) cast to avoid int overflow	1993-08-09 21:34:11 +00:00
README	added (unsiged) cast to avoid int overflow	1993-08-09 21:34:11 +00:00

README

ed is an 8-bit-clean, POSIX-compliant line editor.  It should work with
any regular expression package that conforms to the POSIX interface
standard, such as GNU regex(3).

If reliable signals are supported (e.g., POSIX sigaction(2)), it should
compile with little trouble.  Otherwise, the macros spl1() and spl0()
should be redefined to disable interrupts.

The following compiler directives are recognized:
DES		- use to add encryption support (requires crypt(3))
NO_REALLOC_NULL	- use if realloc(3) does not accept a NULL pointer
BACKWARDS	- use for backwards compatibility

The file `POSIX' describes extensions to and deviations from the POSIX
standard.

The ./test directory contains regression tests for ed. The README
file in that directory explains how to run these.

For a description of the ed algorithm, see Kernighan and Plauger's book
"Software Tools in Pascal," Addison-Wesley, 1981.