openbsd-src

mirror of https://github.com/openbsd/src.git synced 2024-12-21 23:18:00 -08:00

History

jsg 1ca96170b4 remove duplicate unistd.h include		2024-10-12 07:58:40 +00:00
..
USD.doc
buf.c	correct indentation; no functional change	2024-04-23 13:34:50 +00:00
ed.1	grammar fix; from S M	2022-06-19 05:49:51 +00:00
ed.h	Fix the SIGHUP signal race. ed's "event loop" operates a getchar(); check	2024-07-16 05:01:10 +00:00
glbl.c	Definitively choose the existing semantics for the scroll and null command.	2018-06-04 13:26:21 +00:00
io.c	Fix the SIGHUP signal race. ed's "event loop" operates a getchar(); check	2024-07-16 05:01:10 +00:00
main.c	remove duplicate unistd.h include	2024-10-12 07:58:40 +00:00
Makefile	Remove references to BACKWARDS.	2018-06-15 08:46:24 +00:00
POSIX	delete restricted ed. no one will ever use this. never documented or enabled.	2014-05-24 01:35:55 +00:00
re.c	Revert previous, there were some unintended beviour changes.	2018-06-19 12:36:18 +00:00
README	Remove references to BACKWARDS.	2018-06-15 08:46:24 +00:00
sub.c	Reimplement g flag for s commands. Got lost in previous commit.	2016-10-11 06:54:05 +00:00
undo.c	header cleanup	2016-03-22 17:58:28 +00:00

README

$OpenBSD: README,v 1.5 2018/06/15 08:46:24 martijn Exp $
$NetBSD: README,v 1.9 1995/03/21 09:04:33 cgd Exp $

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 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.