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History

Mark Murray eac4bdcca4 Get this area compiling with the highest WARNS= that it works with. Obsolete WFORMAT= junk also removed where possible. OK'ed by: obrien Tested on: sparc64, alpha, i386		2003-06-13 07:04:02 +00:00
..
test
buf.c	Consistently use __FBSDID	2002-06-30 05:13:54 +00:00
cbc.c	Make ed compile in the NOCRYPT case.	2003-06-03 17:03:48 +00:00
ed.1	Fix a broken reference to locale(5) and point to re_format(7) too for an	2003-05-03 20:26:11 +00:00
ed.h	Modernise. Use libcrypto for DES instead of libcipher.	2003-06-02 19:06:28 +00:00
glbl.c	Consistently use __FBSDID	2002-06-30 05:13:54 +00:00
io.c	Correct typos, mostly s/ a / an / where appropriate. Some whitespace cleanup,	2003-01-01 18:49:04 +00:00
main.c	Quiet warnings about copyright[].	2003-05-01 16:58:57 +00:00
Makefile	Get this area compiling with the highest WARNS= that it works with.	2003-06-13 07:04:02 +00:00
POSIX
re.c	Consistently use __FBSDID	2002-06-30 05:13:54 +00:00
README
sub.c	Consistently use __FBSDID	2002-06-30 05:13:54 +00:00
undo.c	Consistently use __FBSDID	2002-06-30 05:13:54 +00:00

README

$FreeBSD$

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		- to add encryption support (requires crypt(3))
NO_REALLOC_NULL	- if realloc(3) does not accept a NULL pointer
BACKWARDS	- for backwards compatibility
NEED_INSQUE	- if insque(3) is missing

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.