NetBSD

History

alm c91a4017da Repeating a search requires only `/' (or` ?'), not `//' (or` ??') But `s/' is still invalid, use `s//' instead. If first regex is invalid, regex pointer is now set to NULL so that repeating the search correctly reports "No previous pattern".		1993-08-30 02:20:18 +00:00
..
test	Make paths explicit to handle case where . is not in PATH.	1993-08-02 20:43:57 +00:00
buf.c	Add RCS identifiers.	1993-08-01 18:49:50 +00:00
cbc.c	Add RCS identifiers.	1993-08-01 18:49:50 +00:00
ed.1	Makefile	1993-08-02 17:15:26 +00:00
ed.c	Repeating a search requires only `/' (or` ?'), not `//' (or` ??')	1993-08-30 02:20:18 +00:00
ed.h	Repeating a search requires only `/' (or` ?'), not `//' (or` ??')	1993-08-30 02:20:18 +00:00
Makefile	Repeating a search requires only `/' (or` ?'), not `//' (or` ??')	1993-08-30 02:20:18 +00:00
POSIX	fixed undo within a global command (would corrupt the buffer)	1993-07-02 10:02:26 +00:00
re.c	Repeating a search requires only `/' (or` ?'), not `//' (or` ??')	1993-08-30 02:20:18 +00:00
README	fixed regex initialization	1993-06-16 07:36:51 +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:
GNU_REGEX	- use with GNU regex(3)
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.