Read Me(Aegis)							Read Me(Aegis)

NAME
	aegis -	project	change supervisor
	Copyright (C) 1991, 1992, 1993,	1994, 1995, 1996, 1997,	1998, 1999,
	2000, 2001, 2002, 2003,	2004, 2005, 2006, 2007,	2008, 2009 Peter
	Miller

	Aegis is distributed under the terms of	the GNU	General	Public
	License.  See the LICENSE section, below, for more details.

	aegis (ee.j.iz)	n., a protection, a defense.

DESCRIPTION
	Aegis is a CASE	tool with a difference.	 In the	spirit of the UNIX
	Operating System, Aegis	is a small component designed to work with
	other programs.

	Many CASE systems attempt to provide everything, from bubble charts to
	source control to compilers.  Users are	trapped	with the components
	supplied by the	CASE system, and if you	don't like one of the
	components (it may be too limited, for instance), then that is just
	tough.

	In contrast, UNIX provides many	components of a	CASE system -
	compilers, editors, dependency maintenance tools (such as make),
	source control tools (such as RCS).  You may substitute	the tool of
	your choice if you don't like the ones supplied	with the system	- gcc,
	jove, cake, to name just a few.	 Aegis adds to this list with software
	configuration management, and true to UNIX philosophy, Aegis does not
	dictate	the choice of any of the other tools (although it may stretch
	them to	their limits).

	Enough hype, what is it	that Aegis does?  Just what is software
	configuration management?  This	question is sufficiently broad as to
	require	a book in answer.  In essence, Aegis is	a project change
	supervisor.  It	provides a framework within which a team of developers
	may work on many changes to a program independently, and Aegis
	coordinates integrating	these changes back into	the master source of
	the program, with as little disruption as possible.  Resolution	of
	contention for source files, a major headache for any project with
	more than one developer, is one	of Aegis' major	functions.

	It should be noted that	Aegis is a developer's tool, in	the same sense
	as make	or RCS are developer's tools.  It is not a manager's tool - it
	does not provide progress tracking or manage work allocation.

BENEFITS
	So why should you use Aegis?

	Aegis uses a particular	model of the development of software projects.
	This model has a master	source (or baseline) of	a project, and a team
	of developers creating changes to be made to this baseline.  When a
	change is complete, it is integrated with the baseline,	to become the
	new baseline.  Each change must	be atomic and self-contained, no
	change is allowed to cause the baseline	to cease to work.  "Working"
	is defined as passing it's own tests.  The tests are considered	part
	of the baseline.  Aegis	provides support for the developer so that an
	entire copy of the baseline need not be	taken to change	a few files,
	only those files which are to be changed need to be copied.

	In order to ensure that	changes	are unable to cause the	baseline to
	cease to work, Aegis mandates that changes be accompanied by at	least
	one test, and that all such tests be known to complete successfully.
	These steadily accumulated tests form an ever increasing regression
	test suite for all later changes.  There is also a mandatory review
	stage for each change to the baseline.	While these requirements may
	be relaxed per-change or even per-project, doing so potentially
	compromises the	"working" definition of	the baseline.

	The win	in using Aegis is that there are O(n) interactions between
	developers and the baseline.  Contrast this with a master source which
	is being edited	directly by the	developers - there are O(n!)
	interactions between developers	- this makes adding "just one more"
	developer a potential disaster.

	Another	win is that the	project	baseline always	works.	Always having
	a working baseline means that a	version	is always available for
	demonstrations,	or those "pre-release snapshots" we are	always forced
	to provide.

	The above advantages are all very well - for management	types.	Why
	should Joe Average Programmer use Aegis?  Recall that RCS provides
	file locking, but only for one file at a time.	Aegis provides the
	file locking, atomically, for the set of files in the change.  Recall
	also that RCS locks the	file the instant you start editing it.	This
	makes popular files a project bottleneck.  Aegis allows	concurrent
	editing, and a resolution mechanism just before	the change must	be
	integrated, meaning fewer delays for J.A.Programmer.

	Aegis also has strong support for geographically distributed
	development.  It supports both push and	pull models, and many
	distribution topologies.  Aegis' normal	development process is used to
	validate received change sets before committing	them.

ARCHIVE	SITE
	The latest version of Aegis is available by HTTP from:

		URL:	http://www.canb.auug.org.au/~millerp/
		File:	aegis.html	      #	the Aegis page
		File:	aegis.4.24.2.README   #	Description, from tar file
		File:	aegis.4.24.2.lsm      #	Description, in	LSM format
		File:	aegis.4.24.2.ae	      #	the complete source, aedist format
		File:	aegis.4.24.2.spec     #	RedHat package specification
		File:	aegis.4.24.2.tar.gz   #	the complete source

	This directory also contains a few other pieces	of software written by
	me.  Some are referred to in the Aegis documentation.  Please have a
	look if	you are	interested.

   Mirrors
	See http://www.canb.auug.org.au/~millerp/ for a	list of	mirror sites.

	Aegis is also carried by metalab.unc.edu in its	Linux archives.	 You
	will be	able to	find Aegis on any of its mirrors.

		URL:	ftp://metalab.unc.edu/pub/Linux/devel/vc/
		File:	aegis.4.24.2.README   #	Description, from tar file
		File:	aegis.4.24.2.lsm      #	Description, in	LSM format
		File:	aegis.4.24.2.spec     #	RedHat package specification
		File:	aegis.4.24.2.ae	      #	the complete source, aedist format
		File:	aegis.4.24.2.tar.gz   #	the complete source
	This site is extensively mirrored around the world, so look for	a copy
	near you (you will get much better response).

MAILING	LIST
	A mailing list has been	created	so that	users of Aegis may exchange
	ideas about how	to use Aegis.  Discussion may include, but is not
	limited	to: bugs, enhancements,	and applications.  The list is not
	moderated.

	The address of the mailing list	is
		aegis-users@auug.org.au
	Please DO NOT attempt to subscribe by sending email to this address.
	It is for content only.

   How To Subscribe
	To subscribe to	this mailing list, visit the Aegis-users mailing list
	page (http://www.auug.org.au/mailman/listinfo/aegis-users) and go
	through	the subscribe dialogue.

   Archive
	The mailing list is archived at	eGroups.  The URL is
	http://www.egroups.com/list/aegis-users/info.html

   No Files By EMail
	The software which handles this	mailing	list CANNOT send you a copy of
	Aegis.	Please use FTP or ftp-by-email,	instead.

BUILDING
	Instructions on	how to build and test Aegis are	to be found in the
	BUILDING file included in this distribution.

SOME HISTORY
	The idea for Aegis did not come	full-blown into	my head	in the shower,
	as some	of my programs do, but rather from working in a	software shop
	which used a simplistic	form of	something similar.  That system	was
	held together by chewing-gum and string, it was	written	in a
	disgusting variant of Basic, and by golly the damn thing worked
	(mostly).  Aegis is nothing like it, owes none of its code to that
	system,	and is far more	versatile.  It turns out that the system used
	is nothing new,	and is described in many SCM textbooks;	it is the
	result of systematically resolving development issues for large-ish
	teams.

	Since that company decided to close down our section (the company was
	under attack by	a hostile takeover bid)	we all moved on	simultaneously
	(all 60	of us),	sometimes working together, and	sometimes not, but
	always keeping in touch.  With suggestions and conversations with some
	of them	early in 1990, the manual entries for Aegis took shape,	and
	formed most of the design document for Aegis.

	Since getting the first	glimmerings of a functional Aegis late in 1990
	it is increasingly obvious that	I never	want to	be without it ever
	again.	All of my sources that I modify	are instantly placed under
	Aegis, as is anything I	distribute.  All code I	write for myself, and
	all new	code I write for my employer, goes under Aegis.	 Why?  Because
	it has fewer bugs!

	Example: one of	the sources I carry with me from job to	job is "cook",
	my dependency maintenance tool.	 Cook had existed for 3	years before
	Aegis appeared on the scene, and I used	it daily.  When	I placed cook
	under Aegis, I found 6 bugs!  Since then I have	found a	few more.  Not
	only are there now fewer bugs, but they	never come back, because the
	regression test	suite always grows.

   Branching
	In 1997	the full branching support was released	(it took nearly	18
	months to retro-fit.  The underlying data structures for projects and
	change sets need to be merged.	While I	noticed	back in	1990 that they
	were very similar, it wasn't until branch support design was well
	underways that they should have	been the same  data structure from the
	beginning.

   Geographically Distributed Development
	In 1999	a conversation on the aegis-users mailing list resulted	in the
	creation of aedist, a program which packages and unpackages Aegis
	changes	so they	can be sent by e-mail, or WWW or whatever.  With 20:20
	hindsight, this	could have been	done way back in 1991, because the
	basic idea builds on Aegis change process model.

Windows	NT
	Aegis depends on the underlying	security provided by the operating
	system (rather than re-invent yet another security mechanism).
	However, in order to do	this, Aegis uses the POSIX seteuid system
	call, which has	no direct equivalent on	Windows	NT.  This makes
	porting	difficult.  Single-user	ports are possible (e.g. using
	Cygwin), but are not usually what folks	want.

	Compounding this is the	fact that many sites want to develop their
	software for both Unix and Windows NT simultaneously.  This means that
	the security of	the repository needs to	be guaranteed to be handled in
	the same way by	both operating systems,	otherwise one can act as a
	"back door" into the repository.  Many sites do	not have the same
	users and permissions (sourced from the	same network register of
	users) on both Unix and	Windows	NT, making the mapping almost
	impossible even	if the security	models did actually correspond.

	Most sites using Aegis and Windows NT together do so by	running	Aegis
	on the Unix systems, but building and testing on the NT	systems.  The
	work areas and repository are accessed via Samba or NFS.

LICENSE
	Aegis is free software;	you can	redistribute it	and/or modify it under
	the terms of the GNU General Public License as published by the	Free
	Software Foundation; either version 3 of the License, or (at your
	option)	any later version.

	Aegis is distributed in	the hope that it will be useful, but WITHOUT
	ANY WARRANTY; without even the implied warranty	of MERCHANTABILITY or
	FITNESS	FOR A PARTICULAR PURPOSE.  See the GNU General Public License
	for more details.

	You should have	received a copy	of the GNU General Public License
	along with this	program. If not, see <http://www.gnu.org/licenses/>.

	It should be in	the LICENSE file included in this distribution.

AUTHOR
	Peter MillerE-Mail:   millerp@canb.auug.org.au
	/\/\*					  WWW:	 http://www.canb.auug.org.au/~millerp/

RELEASE	NOTES
	For excruciating detail, and also acknowledgments of those who
	generously sent	me feedback, please see	the etc/CHANGES.*  files
	included in this distribution.

   Upgrading
	In general, all	the machines on	your network need to be	running	the
	same release of	Aegis.	While the database format is backwards
	compatible, it is rarely forwards compatible in	the face of new
	capabilities.

   Version 4.24.2 (25-Jun-2009)
	* The branch fstate can	contain	fake transparent entries when a	change
	not yet	integrated modifies for	the first time in the branch a file.

	It is possible that such entries cause troubles	if the project is
	configured to write the	pfstate	file.  To avoid	such troubles the fake
	transparent entries are	stripped on the	fly when reading the pfstate
	file.

	The way	the the	pfstate	file is	written	is not modified.

	* The Italian translation of error messages is now available.

	* The Vietnamese and Dutch error messages has been updated.

	* The aerevml(1) command was incorrectly printing twice	user defined
	attributes. This behavior has been fixed.

	* The aeclean(1) command was incorrectly checking the patterns against
	the absolute name of the files.	 This behavior has been	fixed.

	* The aelock(1)	man page was incorrectly reporting the attribute name
	aelock use.  This has been fixed.

	* The aesub(5) man page	now reference aeuconf(5) in the	email address
	section.

	* The aedist(1)	command	is now more robust when	handling renamed
	files.

	* The t0228a-matt.sh test script has been made more robust with
	respect	to different behavior of libmagic.

	* The t0127a.sh	test script (aeimport vs. sccs)	has been fixed.

	* A number of memory related bugs has been fixed.

	* Some typo has	been corrected in the ae-repo-ci(1) man	page.

	* The build process has	been improved to give more informative
	messages when a	new aegis developer populate his repository for	the
	first time.

   Version 4.24.1 (24-Sep-2008)
	Security: [ #2079025 ] This update fix two security problems
	discovered by the Debian crew (Debian #496400 and #496402,
	CVE-2008-4938) You are encouraged to upgrade.

	Removed	functionalities: In response to	one of the two above security
	problem, the aegis.cgi program has been	removed.

	* Test 222 has been improved to	cope with some different ways SVN
	stores revision	information, remaining backwards compatible.

	* A bug	in the distributed development machinery has been fixed: it no
	longer add the file UUID to created files without an UUID in the
	remote repository.  This prevents the existence	of the same file with
	different UUIDs	in different repositories.

	* [ #1942614 ] Some build problem discovered by	the Debian crew	has
	been fixed.  Specifically: improve 'make clean'	(Debian	bug 442482),
	add a minor man-page (Debian patch), make test in ae_diff2htm portable
	(Debian	bug 464484), fix whoami	test in	etc/test.sh (Debian bug
	393624), add shell magic to ae-cvs-ci (Debian patch).

	* The aediff command now behave	as expected when invoked for a file
	that, due to a bug in aeipass, is present with two different UUIDs in
	the repository.	 Previously it used to generate	a diff between the
	empty file and the second revision of the file.

	* A bug	has been fixed in aefind, it no	longer segfaults when given
	the -baseline option.

	* A bug	has been fixed in aefinish: it no longer segfault if a branch
	was to be finished and it contained a transparent file.

	* A bug	has been fixed in the aecp -ind	-output	- option, it no	longer
	tries to set the permission mode of stdout.

	* A bug	has been fixed in aeib,	it no longer complains that
	transparent files have been tampered with.

	* A couple of memory leaks introduced with the time safe work has been
	plugged.

	* The makefile has been	changed	to use DESTDIR (advocated by GNU).

	* A test script	has been improved to work with older bzip2.

	* Small	improvement to test_funcs, reintroduce the chown invocation
	for the	directory under	$work/.

	* This change set modify the aefinish command to jump the project home
	path instead of	the user home directory	(since it may be inaccessible)

	* This aegis.spec file (used for RPM builds) has been improved.

   Version 4.24	(09-Mar-2008)
	* Numerous portability improvements.

	* Numerous improvements	to the history reconstruction code.

	* Numerous improvements	and bug	fixes to the distributed development
	code.  See aedist(1), aeget(1),	aetar(1) and aepatch(1)	for more
	information.

	* The site specific architecture information has been split into a
	separate file, maked with an entire-source-hide	attribute, so that new
	Aegis-under-Aegis projects don't have such bad architecture problems.

	* The license has been changed to GPLv3.

	* A bug	has been fixed the the change::pconf_get method	which
	sometimes caused segfaults.

	* A bug	has been fixed in aeclone which	caused aecp -delta to segfault
	when: a	change set whith a removed file	was cloned, and	the clone
	change set subsequently	integrated.

	* The aediff command is	now smarter about files	which may have moved.

	* A bug	has been fixed in the aeannotate command, it no	longer
	segfaults for some file	histories.

	* A Vietnamese error mesage translation	has been added.

	* There	is a new Portugese (Brazillian)	message	catalogue translation.

	* It is	now possible to	develop	begin undo and new change undo in a
	single command.

	* The ael(1) command now understands are much wider range of ways to
	specify	changes.

	* A segfault has been fixed in the use of --delta and --delta-data
	options.

	* This change set fix a	problem	in the aesvt(1)	checkout command that
	can fail to extract from a gzip	compressed archive.

	* A bug	has been fixed in the aechown(1) command, to stop a segfault
	when printing some error messages.

	* There	is a new aebisect(1) command which helps to find project
	regressions not	handled	by the test suite.

	* Many commands	now cope with renames in more situations.

	* A bug	has been fixed in aeclone(1) which caused aecp -delta to
	segfault when a	change set whith a removed file	was cloned, and	the
	clone change set subsequently integrated.

	* The aede-policy(1) manual page has been updated to document the
	aede-policy-line-length	file attribute.

	* A vietnamese translation has been added.

	* The aereport(1) command now understands more ways to specify
	changes.

	* There	is a new ${path_reduce}	substitution which may be used to
	remove redundant elements from path lists, such	as used	by the $PATH
	environment variable.

	* When the development directory style required	actions	to be perfomed
	on the development directory, the obsolete "creating symbolic links to
	baseline" message was produced.	This was confusing. A more generic
	message	is now used, which is intended to be less confusing.

	* The aecp(1) -delta command now follows the whiteout preference when
	copying	a "removed" file.  The test suite now runs much	faster.

	* A bug	has been fixed in the aedbu(1) command.	It no longer complains
	about permissions when the develop_begin_undo_command has been set.

	* A bug	has been fixed in the aeimport(1) command.  It no longer uses
	the Attic portion of filenames when populating the history directory
	tree.

	* The change details listing now prints	comments in a wide column when
	the comments are lengthy.

	* There	is a new $Active_Directory substitution, used to obtain	the
	development directory, or the integration directory, depending on the
	change state. This is rather like the default behaviour	of the aecd(1)
	command.

	* There	is a new ${project version} substitution.

	* The commands run by aeipass are now accompanied by more file name
	information, so	that you can know which	source file corresponds	to
	which UUID history file, if there is a failure in the history
	commands.

	* The aeca(1) command now checks for and discards duplicate
	architecture names. This fixes a bug with unsatifiable architecture
	dependencies.

	* The aeb(1) command has been improved,	it no longer keeps running the
	project_file_comand over and over again.

	* A bug	has been fixed in the aenf(1) command; it now preserves
	existing file contents if new files already exist in the development
	directory.

	* A bug	has been fixed in the "aet -regression"	command, it no longer
	reports	free()ing a non-existent string.

	* A bug	has been fixed in the aed(1) command, it no longer reports a
	bug when a cross branch	merege is attempted for	a file independently
	created	in both	branches.

   Version 4.23
   Version 4.22.2 (18-Oct-2007)
	This is	an update for the 4.22 stable release, it is meant to help
	Aegis users while the next release cycle ends.

	* [ 1684820 ] Fixed a bug in aeclone that caused aecp -delta
	segfaults.

	* The symlink farm now handle derived files registered within Aegis
	more like normal derived files.

	* The change_pconf_get function	no longer looks	for historical
	versions of files, if it can help it.  This makes many things go
	faster and solved the problem of configuration fields redefinition.
	While this change does not make	Aegis more time	safe, it cures one of
	the symptoms.

	* Fixed	test 222 to work with recent releases of subversion.

	* The aepconf(5) has been improved.

	* [ Debian 435422 ] The	reference manual was wrongly referring to
	-Page-Headings instead of -Page-Header.	 The documentation has been
	updated	to match the source code.

	* The test/02/t0257a-walt.sh script has	been back-ported from the
	development branch (4.23) to prevent bug #...... to appear in the
	stable branch.

	* [ 1704108 ] The aecp(1) -delta command now follows the whiteout
	preference when	copying	a "removed"file.

	* [ 1685304 ] A	bug has	been fixed that	caused aecp(1) -delta X	to
	copy in	a change also a	file with the old name of a file aemv(1)ed
	before delta X.

	* The generated	Makefile now installs aelock(1)	with the correct
	permissions.

	* A bug	has been fixed in the aetar(1) command,	it no longer creates
	tarballs that cause BSD	tar to complain	like this: tar:	End of archive
	volume 1 reached tar: Unexpected EOF on	archive	file

	* The configure	script now handle correctly the	datadir	substitution.

   Version 4.22.1 (14-Apr-2007)
	* Test t0247a-walt.sh has been fixed, it was not exporting
	AEGIS_TEST_DIR.	 This make aeintegratq(1) leaving stuff	in the home
	directory of the user.

	* Some minor fix that prevented	Aegis to build on RPM based
	distributions has been fixed.

	* The t0011a.sh	test script failed when	lex(1) was missing, since it
	is not required	to build Aegis the test	script has been	modified to
	pass even when lex(1) is missing.

	* aedist(1) now	handle certain renamed files correctly when receiving
	branches or entire-source.

	* The t0011a.sh	test script failed when	lex(1) was missing, since it
	is not required	to build Aegis the test	script has been	modified to
	pass even when lex(1) is missing.

	* aedist(1) now	handle certain renamed files correctly when receiving
	branches or entire-source.

	* [ 1691122 ] Newer versions of	the autoconf tools introduced a	new
	@datarootdir@, and complained loudly if	it wasn't used.	 Aegis
	configure does not trigger anymore those warnings.

	* The test suite does not use anymore diff(1) -u because not all
	systems	have gnu diff, so the use of gnu diff's	-u option is nor
	portable, and will give	false negatives	on some	systems.

	* The test suite does not use anymore diff(1) -u because not all
	systems	have gnu diff, so the use of gnu diff's	-u option is nor
	portable, and will give	false negatives	on some	systems.

	* aedist(1) -rec now save the UUID as the user defined original-UUID
	if the UUID is already present in the repository.  This	is especially
	useful when receiving changes in the same repository.

	* aeclone(1) now preserve the the UUID of the original change as the
	original-UUID user defined attribute of	the new	change.	It also	copy
	any other used-defined attribute.

	* Test 89 has been disable on HP-UX-10 because that system has a
	"vendor	specific" (i.e.	broken)	cpio(1)	archive	format.

	* Test 95 has been improved to be less sensitive to libmagic(3)
	differences.

	* Test 207 has been changed to be less sensitive to sort(1)
	differences.

	* The project_specific setenv:*	variables are now exported only	once.

	* [ 1674882 ] The following bug	as been	fixed: if a file is created
	and renamed within a single branch, and	that branch is integrated,
	then the file is not included in the output of 'aedist -send -es' from
	subsequent branches.

	* A bug	has been fixed in the aedbu(1) command.	 It no longer
	complains about	permissions when the develop_begin_undo_command	has
	been set.

	* The aedist(1)	-rec command now better	handles	file renamed (not
	aemved)	to match the local repository state.

	* A bug	has been fixed that caused the change_pconf_get	function
	terminate aegis(1) with	a fatal	error if applied to a branch without a
	config file (e.g. if the trunk does not	contain	any closed branch).

	* The aenpr(1) -keep command now set the administrator recursively.

	* A bug	has been fixed in the ${project-specific} substitution,	it now
	works correctly	with the aesub(1) -bl command.

	* aedist(1) -received has been modified	to set the user	defined
	attribute foreign-copyright to true when receiving a remote change
	set.  This in order to avoid aede-policy(1) complain about incorrect
	copyright notice at aede(1) time.0

	* A bug	has been fixed that caused an aemv(1) followed by an aenf(1)
	to generate two	different files	with the same UUID.

	* Avoid	the "multiple permission set" error on quit.

	* A bug	has been fixed in the UUID generating code; it was running out
	of file	descriptors.

	* A bug	has been fixed in the aet(1) -regression command, it no	longer
	reports	free()ing a non-existent string.

	* A bug	has been fixed in the aed(1) command, it no longer reports a
	bug when a cross branch	merge is attempted for a file independently
	created	in both	branches.

	* A bug	has been fixed which caused aeipass(1) to assign UUID to files
	at branch integration pass time. This can happen if the	files was
	created	and integrated with an old Aegis release, lacking support for
	file's UUID.  This bug make it possible	to have	the history for	a file
	split into two part, one accessible via	the file_name, the other
	accessible using the UUID.

	* A segfault in	aeannotate(1) has been fixed.

	* A bug	has been fixed related to the use of the
	unchanged_file_integrate_pass_policy=remove policy described in
	aepconf(5).  In	this case aeipass failed to reset the locked_by	field
	from the project fstate	file, this prevented subsequent	changes	to
	modify the removed file.

	* A bug	has been fixed in the handling of the symlink farm, for
	development directory styles which use them for	derived	files.
	Derived	files in the baseline directory	which were formerly source
	files, but then	aerm-ed, are now included in the development directory
	when copy/link styles are used.

	* A bug	has been fixed in the aenf(1) command; it now preserves
	existing file contents if new files already exist in the file
	development directory.

	* The ./configure script has been improved to stop with	a fatal	error
	if the bzip2 library is	not available.

   Version 4.22	(29-Mar-2006)
	* A bug	has been fixed in the aeclean(1) command, it now correctly
	resets the change build	and test times.

	* A bug	has been fixed in writing of tar and cpio data,	in cases where
	there was one byte too much padding.

	* A bug	has been fixed in the aeintegratq(1) command, it no longer
	ignores	change number zero.

	* A bug	has been fixed in the aepromptcmd(1) comand, it	now
	understands that when the build	command	is "exit 0" then no build is
	required.

	* The aede(1) comand now runs the review_pass_notify_command (instead
	of the develop_end_notify_command) for projects	configured to skip the
	being reviewed state.

	* A bug	has been fixed in the aeannotate(1) command, it	no longer uses
	the wrong timestamp when creating histories for	completed branches.

	* A bug	in the aed(1) command has been fixed, it no longer reports a
	bug when trying	to merge a file	that has been renamed.

	* A bug	has been fixed in the aet(1) command, it now correctly handles
	multiple architectures being reported for batch	test results.

	* A bug	has been fixed in the aet -regression command, the batch_-
	test_command now correctly handles multiple architectures in the
	results.

	* The notification scripts distributed with Aegis have been fixed,
	they now correctly substitute recipients' email	addresses.

	* A bug	has been fixed in the aediff(1)	command, the -change option is
	now ablew to cope with degenerate forms	of the delta name in cases
	like aediff -change D001 and similar.

	* A bug	has been fixed in the aenc(1) command, it now takes more
	notice of project testing default settings.

	* A bug	has been fixed in the aeget(1) interface, the adjective	for
	the alternate listing link at the bottom of the	Integration Histogram
	pages has been inverted.

	* A bug	has been fixed in the aeget(1) command,	is is now always
	possible to see	the error produced by a	script when the	noerror
	modifier is specified.

	* A bug	has been fixed in the aeget(1) web interface, it now provides
	the correct links to the more and less detailed	file history pages.

	* The aeget(1) web interface no	longer emits broken links to removed
	source files.

	* A bug	has been fixed in the aenbr(1) command,	the protect_database
	project	attribute is now correctly inherited from the parent branch.

	* A bug	has been fixed the the RSS feed, where HTML special characters
	were not rendered correctly.

	* A bug	has been fixed in the aeipass(1) command, it no	longer fails
	if the history_create_command was not set, it uses the history_put_-
	command	instead, as it is supposed to.

	* A bug	has been fixed in the aedist -send command, it no longer
	attempts to include the	source of removed files.

	* A bug	has been fixed in the aedist(1)	command, it no longer
	segfaults when compiled	with DEBUG defined.

	* A bug	has been fixed in the aedist -replay command, it no longer
	downloads change sets more than	once.

	* A bug	has been fixed in the aedist -send command, it no longer
	obtains	the wrong version of the project files when building patches
	for files which	have been renamed.

	* A bug	has been fixed in the aedist(1)	command, no longer attempts to
	include	the source of removed files.

	* A bug	has been fixed in the aedist -pending command, it now resolves
	project	aliases.

	* A bug	has been fixed in the aedist(1)	command, it no longer
	segfaults on IRIX.

	* A bug	was fixed which	caused the development_directory of a branch
	to be recorded as an absolute path in the Aegis	meta-data, rather than
	relative to the	home of	the project.  This problem make	it difficult
	to move	a project to a different location in the filesystem.

	* There	is a new open source project example on	the web	site, which
	allows tarballs	to be unpacked and turned into an Aegis	project	in
	less than 30 minutes.

	* There	is a new aefinish(1) command which may be used to read the
	state of a change set and then run all of the Aegis commands necessary
	to to end development.	See aefinish(1)	for more information.

	* The aexml(1) command now understands ".bz" output file suffix, in
	addition to the	".gz" suffix it	already	understood.  The man page has
	been updated to	cover the -output opion.

	* The aerevml -send command is now able	to produce bzip2 compressed
	output.

	* The restrictions on project alias names have been eased.  It is now
	possible to have any alias name	you like, so long as it	doesn't
	contain	any shell special characters.

	* It is	now possible to	set change attributes from the command line,
	without	going via an editor.  See aeca(1) for more information.

	* The aetar -send command is now able to produce bzip2 compressed
	output.

	* There	is an new aetar	-exclude command line option, allowing you to
	exclude	files from the tarball being unpacked and used to for the
	change set.  This is typically necessary when a	tarball	includes
	derived	files (e.g. the	./configure script in most open	source
	projects).

	* There	is a new aetar -exclude-auto-tools option, which can be	used
	to exclude derived files commonly found	in open	source projects	using
	the GNU	Autoconf and GNU Automake tools.

	* There	is a new aede-policy(1)	command	which may be invoked by
	develop_end_policy_command to enforce additional local policies.  See
	aede-policy(1) for more	information.

	* When symlinking files	(source	or derived) into the development
	directory, the last-modified time of the link is set to	the last-
	modified time of the file being	linked to, when	the underlying
	filesystem supports it.

	* The aefa(1) command now accepts name=value attribute assignments on
	the command line.

	* The aet(1) command now understands name=value	pairs on the command
	line, and passes them unchanged	to the test command.  The -force
	option implies a force=1 variable setting.

	* The aepatch -send command is now able	to produce bzip2 compressed
	output.

	* The aesvt(1) command now uses	the bzip2(1) algorithm by default.
	There is a aesvt -compression-algorithm=gzip option for	forwards
	compatibility.

	* There	is a new ae-repo-ci(1) command which may be used in an
	integrate_pass_notify_command to do a parallel check-in	of a change
	set into a second parallel repository.	It understands CVS and SVN at
	the moment; it is easy to extend to understand more repository types.
	The old	ae-cvs-ci(1) script now	invokes	the ae-repo-ci(1) command.

	* The build step of the	development process can	now be made optional.
	Configuring a build_command of "exit 0"	will tell Aegis	your project
	does not need to be built.

	* The aedist --replay command now adds a compatibility modifier	to all
	of the downloads URLs, so that the change set received will be
	compatible with	the version of aedist at the receiving end.

	* The aedist -send command now accepts a -no-mime-header option, to
	make it	easier to validate the aedist(1) output	against	the real
	cpio(1)	command.

	* The aedist -send command is now able to produce bzip2	compressed
	output.

	* There	is a new entire-source-hide file attribute which may be	used
	to omit	site-specific files from aedist	-send change sets.

	* The aetar -remove-path-prefix	option now also	accepts	a numeric
	argument.

	* The aeannotate(1) command now	understands the	-change	and -delta
	options.

	* The aedb(1) command has been enhanced	to check that directory
	permissions above the development directory will be traversable	by the
	integrator and the reviewers.

	* The aecpu(1) comand now understands the -read-only option to mean
	uncopy all of the insulation files.

	* There	is a new aelock(1) command, which may be used to take read-
	only locks.  This can be useful	for backups, and other activities
	outside	Aegis' scope which require a constant project state to operate
	correctly.

	* The aedist command can now perform file merges with better results.

	* The aedist -receive command now looks	to see if the executing	user
	has project admin priviledges, and if so does not cancel testing
	exemptions.

	* The aedist -receive command now applies patches using	the patch(1)
	command, rather	than doing it less well	itself.

	* The aedist -replay command now attempts to use the same change
	number as on the remote	system.	 A bug has been	fixed in the way it
	looked for change numbers.

	* There	is a new unchanged_file_integrate_pass_policy field in the
	project	configuration file, which controls what	to do when a change
	set contains an	unchanged file at integrate pass time.

	* It is	now possible for developers to edit a change description when
	a change is in the awaiting development	state, if the project has
	developers_may_create_changes enabled.

	* The aed(1) command is	now optional.  Configuring a diff_command of
	"exit 0" will tell Aegis your project does not need to be differenced.

	* The aeget(1) interface now places HTML anchors in description	text
	where it recognizes them.

	* There	is a new aeget:inventory:hide change attribute,	which may be
	used to	prevent	strictly local change sets from	being advertised in
	the aeget(1) change set	inventory.

	* The aeget(1) web interface file listings pages now link the edit
	numbers	to file	versions. When history is available there are also
	links to the previous verion, and the arrow is linked to a diff	page.

	* The aeget(1) presentation of file history has	been improved to
	highlight renaming of files.

	* The aeget(1) web interface now has a recursive option	on its project
	integration history pages.

	* The aebuffy(1) command is now	able to	run the	tkaer(1) command from
	more states, and it now	accepts	'q' to quit.  The display of changes
	with double quotes (") in their	brief description has been improved.

	* A build problem with libcurl not being present has been fixed.

	* A bug	has been fixed which caused errors when	Aegis was compiled
	with g++ 4.1

	* A build problem has been fixed on Solaris.

	* A build problem related to bison(1) using libintl(3) has been	fixed.

	* The ./configure script has been improved to correctly	detect
	installation of	the OSSP UUID library.

	* A build problem on HP/UX has been fixed.

	* A build problem on MacOS X has been fixed.

	* A build problem has been fixed where libraries required by the
	./configure script are located under /usr/local/lib or some other non-
	standard place.

   Version 4.21	(10-Nov-2005)
	You must have the Gnome	libxml2	library	(http://xmlsoft.org/)
	installed in order to build Aegis.  Please install the xml2 library
	version	1.8.17 or later.  You do not have to install the rest of
	Gnome, the library can be used on its own.  If you are using a package
	based install, you will	need the libxml2-devel or libxml2-dev package
	in addition to the libxml2 package.

	Ideally, you would also	install	the libmagic package, used to
	determine file types, just as file(1) does.  (This is not to be
	confused with the libmagic6 image manipluation library.	 If you	are
	using a	package	based install, you will	need the libmagic-devel	or
	libmagic-dev package in	addition to the	libmagic package.

	* A bug	has been fixed in the aecp -independent	-output	option,	which
	resulted in an error when Aegis	tried to chmod nothing.

	* The auto file	promote	feature	previously available in	aed(1) has
	been added to the aeb(1), aecp(1), aerm(1) and aenf(1) commands.

	* The aedist -pending and aedist -missing commands now print the
	number of changes in the remote	inventory.

	* A bug	was fixed in the aecp command which caused a segfault
	sometimes when the user	tries to copy a	removed	file.

	* The aedist -replay command now accepts a -maximum option, which
	includes change	sets not yet completed in the local change set
	inventory when considering what	to download.

	* There	is a new develop_end_policy_command field in the project
	configuration file. It can be used to add addition constrains to
	change sets before they	can complete aede(1) successfully.

	* The aedist -receive command now annotates remote change sets
	(typically, change sets	downloaded via the aedist -replay command)
	with their origin URL.

	* A bug	has been fixed in the aebuffy command where it would display
	incorrectly when the brief_description of a change contained double
	quotes.

	* It is	now possible to	attach a comment to all	commands which involve
	a change state transition, e.g.	aenc, aede, etc.  This is done using
	the -reason command line option, just as you are able to do for	review
	fail, etc.

	* A bug	has been fixed in aenc,	where it did not correctly copy	user
	defined	attributes.

	* There	is a new aelcf(1) command to efficiently generate lists	of
	change source files for	use by your build tool.

	* There	is a new aelpf(1) command to efficiently generate lists	of
	project	source files for use by	your build tool.

	* There	is a new cache of state	information attached to	each delta,
	the project file state at the time of the delta. This has the
	potential to accelerate	aecp -delta, and all other
	project_file_roll_forward-based	operations.  Large projects may	want
	to turn	this off, because each delta will produce another large
	project	file state cache.

	* There	is support for generating RSS feeds from Aegis.	 See the Aegis
	project	pages on the Aegis web interface for an	example.  See
	aepconf(5) and aeget(1)	for more information.

	* The ${change delta_uuid} substitution	now allows access to the
	delta_uuid in the being	integrated state.

	* The "wrong file" error message from aedist has been improved,	to say
	what was expected.

	* There	is a new optional $filename substitution for the history_put_-
	command, so that you can attach	the current name of the	check-in to
	the history file meta-data.  There is a	new optional $uuid
	substitution for history_put_command, so you can attach	that as	mete-
	data, too.

	* There	is a new history tool bundled with Aegis.  See aesvt(1)	for
	more information.

	* There	is a new default_regression_test_exempt	project	attribute.

	* The aedist -receive delta selection mechanism	has been improved:
	previously the edit-origin-UUID	attribute was considered in favour of
	the original-UUID attribute, with this change it is used the change
	set, bounded to	the edit-origin-UUID or	to original-UUID, more
	recently integrated.  This should reduce the frequency of logical
	conflicts.

	* There	is a new aerevml(1) command, which can be used to send change
	sets in	the RevML format.  See aerevml(1) for more information.	 The
	aeget(1) web interface is also able to serve change sets in this
	format.

	* A problem has	been fixed which caused	Aegis to fail on the hppa port
	of Debian.

	* The aetar -receive program now uses the archive name as the brief
	description.

	* A bug	was fixed in aedist -send which	caused segfaults when
	processing some	files.

	* A bug	was fixed which	caused aedist -send to produce an archive that
	can not	be aedist -receive because of an operation impossible to
	replicate in a change set.

	* There	is an implementation of	Robert Collins'	subunit	testing
	framework available.  See aesubunit(1) for more	information.

	* A bug	was fixed in aedist that caused	an error when receiving	a
	branch's archive generated with	the aedist -send -entire-source
	option.

	* A bug	has been fixed in aedist -receive that caused a	segfault in
	the rename handling code.

	* The aedist -missing listing (and the aedist -replay behaviour) now
	check for branch UUIDs as well,	just in	case someone fetched a branch
	as a change set	and applied it.	 However, aeget	does not report	these
	UUIDs, because that would be too confusing.

	* It is	now possible to	specify	any sufficiently unique	leading	prefix
	of a UUID rather than the full 36 characters.

	* There	is a new ${History_Path} substitution available.  It gives you
	the path name of the history file corresponding	to the given
	filenames.

	* A bug	in aedist -receive which caused	incorrect delta	selection has
	been fixed.

	* There	is a new aedist	-pending option	which can print	the list of
	local change sets missing from a remote	repository.

	* The aedist -receive command is now able to use the edit-origin-UUID
	attribute to copy modified files from the right	origin.

	* A bug	has been fixed in aedist -send where some types	of incomplete
	changes	would fail an assert.

	* There	is a new aexver(1) command which can be	used to	view
	historical versions of files in	an Aegis repository.  See aexver(1)
	for more information.

	* A bug	as been	fixed which caused aemv(1) to incorrectly rename a
	file to	an existing directory

	* It is	now possible to	specify	user-defined user attributes in	the
	~/.aegisrc file.

	* The aenf(1) command now gives	a warning if you specify the "config"
	file without the "-config" option. This	is the old name	for the
	project	configuration file, the	new name is "aegis.conf".

	* The aefind(1)	command	now understands	{+} to mean the	resolved file
	name, and {-} as the unresolved	file name.

	* There	was a bug where	Aegis would exit with a	fatal error if one of
	the directories	on the AEGIS_PATH was read-only. Such directories are
	now ignored.

	* The aetar(1) command has been	improved to process modified and
	created	files in a batched way;	this improves the speed.

	* Additional explanatory text has been added to	the message printed
	when error message translation files can't be found.

	* The aenf(1) command now understands the -keep	and -no-keep options,
	to explicitly control the creation of new files	in the development
	directory.

	* A bug	has been fixed in aemv(1) which	failed to check	the new	name
	against	the filename charset, etc.

   Version 4.20	(28-Jan-2005)
	Please Note: Users are advised to check	the history command settings
	in their project configuration files.  With the	advent of file UUIDs,
	the history mechanism now decouples source file	names from history
	file names.  In	particular, the	assumption that	the history file
	basename is the	same as	the source file	basename is no longer true.
	Correct	settings may be	found in the lib/config.example/ directory of
	the source distribution.

	* The defaulting rules for the change number (if none was specified on
	the command line) have been altered. the current directory now takes
	precedence over	the "only one" rule.  This seems to meet user
	expectations better.

	* A bug	has been fixed in the aecvsserver(1) command which caused to
	to fail	when accessed by some clients.

	* A bug	has been fixed which caused many of the	programs to leave
	temporary files	behind.

	* A bug	has been fixed in the aedist -send -entire-source command
	where it would hang for	some cases.  (Actually,	it would dump core
	after using up all available swap space	on an infinite recursion).

	* A bug	has been fixed in the aedist command (and other	places)	where
	the open of the	project	configuration file could fail, due to not
	properly reconstructing	in historical circumstances.

	* A bug	has been fixed in the integration build	which was removing
	files it should	not, for during_build_only = true work area styles.

	* The aeb command now complains	much less about	"directory not empty"
	when using the link farm.

	* A bug	has been fixed in the aetar -send -entire-source command where
	some files were	missing	when asking for	a complete set of historical
	sources.

	* A bug	has been fixed in the aedist -send -entire-source where	some
	files were zero	length when asking for a complete set of historical
	sources.

	* A bug	in aedist(1) has been fixed, it	was forcing regression test on
	the receiving side even	if the change set does not require it and
	default_test_exemption was set to true.	 It was	annoying especially if
	the test suite take a long time	to run completely.

	* Some bugs have been fixed in aediff(1) which caused it to mis-parse
	the command line in some cases,	and it was also	barfing	on the
	expected exit status 1 when an actual difference was found.

	* A bug	has been fixed in the aecpu(1),	aemtu(1), aemvu(1), aenfu(1),
	aentu(1) and aermu(1) commands.	They were not repairing	the symlinks
	(etc) required by the development_directory_style settings.

	* A bug	has been fixed in the Change_Files listing; it was not showing
	the locked-by information.

	* A bug	has been fixed in the code which updates the development
	directory symlinks.  It	was failing to make all	the directories
	required.

	* A bug	has been fixed in the aedist -send -entrie-source command,
	where it would segfault	in some	cases.

	* A bug	has been fixed in reading plain	diff(1)	format patches.	 This
	was particularly obvious because aeannotate(1) uses this form of diff
	by default.

	* A bug	has been fixed in aeget(1) where it was	showing	removed	source
	files as available for download.

	* A bug	has been fixed in aeget(1) where it produced invalid output if
	the SCRIPT_NAME	environment was	not set.

	* A bug	has been fixed in aeget(1) where it would sometimes ignore
	modifiers.  This was particularly noticable in the download pages.

	* A bug	has been fixed in the aeimport(1) command.  It was using the
	old work area style configuration file parameters, instead of the new
	development_directory_style settings.

	* A memory leak	has been fixed in the symbol table code.

	* A bug	has been fixed in the project_file_find_by_uuid	function.  In
	some cases it would SEGFAULT, particularly once	the memory leak	in the
	symbol table code was fixed.

	* Several build	problems have been fixed.

	* The aeintegratq(1) command has a new -loop options, which causes it
	to keep	processing changes that	become available while it is running.

	* The aet(1) command has a new -sugest-limit option which runs as many
	regression tests as possible (from most	relevant to least relevant)
	but stops after	the given number of minutes.  This is a	way for
	running	the most relevant tests	in a limited time.  For	example, this
	option could be	used if	a project has so many integrations in a	day
	that it	can only afford	20 minutes of integration testing for each
	one.

	* The aed(1) man page has been updated to better describe the
	behaviour around the merge command.

	* The aetar -send command now accepts an -include-build	option that
	also add build files, registered with aegis -new-file -build, to the
	ouput archive.	A -not-include-build option is also accepted.

	* The aetar -receive command now avoids	copying	build files from the
	baseline because this operation	is forbidden and the error stops the
	processing.

	* There	is a new ${Change_Attribute} substitution, which is replaced
	by the values of the change attributes named.

	* The history recapitulation code (project_file_roll_forward) now
	indexes	by UUID	rather than by file name (with backwards compatibility
	for UUID-less repositories).  The user visable result is that file
	history	reports	and listings now accurately track renames.

	* The aet -nopersevere option now also stops for no result as well as
	fail.

	* The aedist --receive command now understands file UUIDs.  This means
	that it	will operate on	the correct file even when one or the other
	repository has renamed the file.

	* The aedist -receive command has been enhanced	to perform file	merges
	if necessary.

	* There	is a new aedist	-replay	option.	 When used in with an aeget(1)
	server,	it can be used to synchronize two repositories.	 The aedist
	-missing option	may be used to show what would be downloaded.

	* The aefa(1) command, with the	-edit option, now shows	you the
	content	type, rather than adding it silently.

	* There	is a new aediff	--command option, allowing you to specify the
	command	you want to use	to display the difference.  For	example, you
	could use tkdiff(1) or mgdiff(1) to display the	change graphically.

	* The aediff(1)	command	now adds labels	when it	is producing a context
	or unified diff	output.

	* There	is a new optional review_policy_command	field in the project
	confioguration file.  This allows for customised review	policies for
	each project, including	multiple reviewers and specific	reviewers for
	portions of the	sources.

	* There	is a new ${Change_Reviewer_List} substitution, which is
	replaced by a space separated list of reviewers	of the current change,
	since the last develop end. This is of particular use to the review_-
	policy_command field of	the project configuartion file.

	* There	is a new ${Change_Developer_List} substitution,	which is
	replaced by a space separated list of all the developers of the
	current	change.

	* There	is a new ${quoted_email_address} substitution, which replaces
	it arguments with the email addresses of the names users.  See
	aesub(5) for more information.

	* The notification scripts have	been updated to	use the	new ${quoted-
	email-address} substitution.

	* The remaining	aegis.cgi(1) functions have been reproduced in
	aeget(1).  The aegis.cgi(1) script is now deprecated.

	* When the UUID	of a change is cleared it (because some	operation on
	the change set invalidates it) is saved	in a change attribute named
	original-UUID.

	* The aedist -receive command is now able to use the original-UUID
	attribute of the incoming change set to	select the delta to merge
	with.

	* The "path unrelated" error message has been updated to make it more
	informative.

	* All attribute	names (project,	change and file) are now case-
	insensitive.

	* The aedist -receive command has been enhanced	to allow you to	select
	the branch of the delta	to merge with.

	* Several classes within the source have been refactored.

   Version 4.19	(30-Sep-2004)
	Please Note: Users are advised to check	the history command settings
	in their project configuration files.  With the	advent of file UUIDs,
	the history mechanism now decouples source file	names from history
	file names.  In	particular, the	assumption that	the history file
	basename is the	same as	the source file	basename is no longer true.
	Correct	settings may be	found in the lib/config.example/ directory of
	the source distribution.

	* There	is a new development_directory_style field of the project
	configuration file.  This allows CVS-style and Arch-style work areas,
	in addition to the BCS-style and viewpath work areas already
	supported.  These new work area	styles permit many existing projects
	to use Aegis with no change to their build systems.  The libsndfile
	and OpenLDAP projects, for example, have been imported and built
	without	modification.  See aepconf(5) and the Dependency Maintenance
	Tool chapter of	the User Guide for more	information.

	* There	is a new aediff(1) command, which may be used to obtain	a
	diff(1)	listing	of a file for different	deltas.

	* There	is a new aepromptcmd(1)	command, used with bash's
	PROMPT_COMMAND environment variable.  It can be	used to	obtain a
	colored	prompt,	simulating the process described in Kent Beck's	book
	Test Driven Development.

	* There	is a new signed_off_by field of	the project configuration
	file.  Set it to true if you want "Signed-off-by" lines	appended to
	change set descriptions	as the changes pass through the	Aegis process.
	The aede(1) and	aerpass(1) commands now	understand two new -signed-
	off-by and -no-signed-off-by options, to override the project setting.
	The aedist -send and aepatch -send commands also understand the	new
	-signed-off-by option, to add the "Signed-off-by" line to the outgoing
	change set description.	 Conforming to:	http://www.ussg.iu.edu/-
	hypermail/linux/kernel/0405.2/1301.html	and http://www.osdl.org/-
	newsroom/press_releases/2004/2004_05_24_dco.html

	* The aet(1) command has been enhanced to allow	integrators to run
	specific tests.

	* The aesub(1) command can now read the	text to	be substituted from a
	file or	standard input.

	* It is	now possible to	use the	project-specific attributes to specify
	environment variables to be set	for commands executed by Aegis.	 This
	can be used to set a predictable PATH, for example.

	* It is	now possible to	customize the aeget(1) web interface using
	project	specific attributes.

	* The ael(1) command and the aeget(1) web interface now	have file
	inventory pages, for the project file inventory	and the	change file
	inventory.

	* There	is a new "change set inventory"	listing	available via the
	ael(1) command and the aeget(1)	web interface, which lists changes and
	their corresponding UUIDs, and links to	an aedist download for each
	change.	The idea is that the aeget(1) pages may	be used	to automate
	downloading change set your repository does not	yet have.

	* There	are two	new history commands in	the project configuration
	file, the history_transaction_begin and	history_transaction_end
	fields.	 It is not an error if these fields are	absent.	 If you	need a
	transaction key, use the $version substitution.

	* The aedist(1)	command	now runs all tests required for	the change
	set, and honors	test exemptions.

	* The aedist(1)	command	now sleeps for a second	to ensure that the
	last-time-modified of derived files will be strictly later than	source
	files, and that	the aeb(1) timestamp will also be strictly later then
	the last-time-modified for the source files.

	* The tkdiff(1)	man page has been updated to say how to	use mgdiff(1)
	instead	of tkdiff(1).

	* All commands which accept the	-change	option may now be given	a
	change set UUID.  You can discover a change's UUID using the ael cd
	(list change details) or ael inventory listings.

	* The aed(1) command now restores source file from backups (,B)	when a
	merge fails.  Previously this was not the case and subsquent aed
	invocations failed because the source file was missing.

	* The aetar -send command now has an -add-path-prefix option, so that
	you can	add a path prefix to all of the	files in a tarball.  The
	aeget(1) CGI interface now adds	a path prefix to generated tarballs by
	default.

	* Whenever you edit file attributes, there is a	Content-Type attribute
	added automagically if none was	there already.	The idea is that this
	could be used by scripts to differentiate file types.

	* The aepatch(1) command now uses diff -u by default.

	* A number of build problems on	different systems have been fixed.

	* A number of minor problems with tests	on different systems have been
	fixed.

	* A bug	has been fixed in the aepatch command; it was not parsing
	simple diff patches correctly.

	* The example history commands have been updated to work better	with
	the new	UUID code.

	* A bug	has been fixed in aecp -delta, where it	would fetch the	wrong
	version	of a file in some cases.

	* A bug	has been fixed in the handling of the executable bit.

	* A bug	has been fixed in aede(1), where is did	not permit branches to
	end when they had a removed file (without a UUID) which	has been
	subsequently recreated (with a UUID).

	* A bug	has been fixed in the aeget(1) command for file	contents.  It
	was giving a "multiple permissions set (bug)" error message.

	* A bug	in the aedist -receive command,	where it was not accurately
	manipulating the incoming change set UUID.

	* A bug	has been fixed in aed(1) which caused it to SEGFAULT.

	* A bug	has been fixed in the aede(1) command, where it	failed to copy
	the UUID when it promoted a file from "create" to "modify"
	automatically.

	* A bug	has been fixed in the $date substitution, it was not advancing
	properly when used in progress messages.

	* A bug	has been fixed in the command line processing of the aefa(1)
	command.

	* A bug	has been fixed in the aegis -review-begin command; it was not
	operating correctly when the change was	in awaiting_review but the
	project	was in goto_being_reviewed.

	* A bug	has been fixed in the $basename	substitution; it now functions
	exactly	like basename(1) command.

	* A bug	has been fixed in the aet -bl command; it erroneously stated
	that the $Search_Path_Executable substitution was mandatory, when it
	actually optional.

   Version 4.18	(10-Jun-2004)
	* A number of build problems have been fixed, particularly concerning
	GCC 3.3	and later.

	* The aemv(1) command has been enhanced	to accept more than two	file
	names.	You are	now able to move serveral files	in the one command.

	* The aedist -receive command has been enhanced	to process move
	operations in a	batched	way.  This improved performance	when receiving
	a change that renames many files.

	* The ./configure script has been changed to take note of the
	--sysconfdir option, used to specify the location of the /etc
	directory.

	* A bug	has been fixed in the aepatch(1) command.  It would SEGFAULT
	when a non-source file was patched.

	* A bug	has been fixed in the aemeasure(1) command.  It	would SEGFAULT
	when no	files were named on the	command	line.

	* The Russian error message catalogue has been updated.

	* A subtle bug in the change file out-of-date tests have been fixed.
	It did not adequately address the transition case for projects
	containing files with and without UUIDs.

	* The ./configure --sysconfdir option is now honored.  It is very
	important to set it to /etc when you configure Aegis.

   Version 4.17	(3-Jun-2004)
	* Each new change set is now assigned a	Universally Unique Identifier
	(UUID) to allow	it to be tracked across	geographically distributed
	development.  The aedist(1) and	aepatch(1) commands now	send the
	change set UUIDs, and preserve them on receipt.

	* Each file now	has a Universally Unique Identifier (UUID) which
	allows tracking	files across renames, even on geographically separate
	sites.	(The aedist(1) and aepatch(1) commands send the	file UUIDs,
	the next release will take advantage of	them on	receipt.)

	* The history filename used to remember	file history is	now based in
	the file UUID, if the file has a UUID.	This simplifies	continuity of
	history	across renames (this fucntion always been present in Aegis,
	but harder to access).

	* As a consequence of the UUID being used to generate history file
	names, there is	no longer the restriction that new files may not be
	named after the	directory portion of a deleted file (or	vice versa).

	* There	is a new aecvsserver(1)	command, which presents	Aegis projects
	and change sets	as CVS modules.	 All of	the core CVS functions are
	supported.  This code needs to be exersized and	tested by users.

	* It is	now possible to	specify	arbitrary attribute names and value
	for each source	file.  The aefa(1) command may be used to edit file
	attributes.  The aedist(1) and aepatch(1) send these attributes; a
	future release will take advantage of the information on receipt.

	* It is	now possible to	attach arbitrary attribute names and values to
	change sets.  For example, you can use this to remember	the bugzilla
	tracking number	for a change.

	* The aepatch(1) command now includes change set meta-data as a
	compressed BASE64 encoded block	at the top of the patch, after the
	human-readable text but	before the files.  This	means that aepatch(1)
	can be as effective as aedist(1) is transmitting chaneg	sets.  Patches
	without	meta-data still	work as	before.

	* There	is a new report	script which writes change logs	in Debian
	format.

	* The aeget(1) web interface has been improved.	 The aepatch(1)
	download now accepts compat=N modifier,	and there is a new Project
	Staff page.

	* There	is a new ae-cvs-ci(1) support script which may be used as an
	integrate_pass_notify_command to commit	change sets to CVS in
	parallel.

	* There	is more	documentation in the User Guide	about using GNU	Diff,
	particularly using diff	-U to provide whole-file listings with "change
	bars" on the left hand side.

	* The files view of the	aeget(1) web interface now accepts options to
	control	the page contents.  The	simplest view allows recursive fetch
	of project sources using wget or similar, with no extraneous links to
	confuse	the results.  Previous behavior	is preserved by	the aeget-
	generated links.

	* You now receive a warning when you are seeing	the short version of
	the error messages.  These are terse and often quite cryptic. the long
	form of	the error messages is to be preferred.

	* The behaviour	of the aedeu(1)	command	has changed slightly.  When
	changes	are in the being reviewed state, and Aegis has been configured
	to use the awaiting review state, the aedeu(1) command will now	report
	an error.  This	is so that reviewers don't waste their time reviewing
	changes	which have already been	returned to the	being developed	state.
	Think of the change as "belonging" to the reviewer while in the	being
	reviewed state.

	* The aedist -send command has a new -compatibility option, use	to
	indicate the version of	the receiving aedist program.  This, in	turn,
	selects	the features which may be added	to or omitted form the
	generated .ae file.

	* There	is a new config	file usage, and	a corresponding	aenf
	-configure command line	option.	 It is now possible to move project
	configuration files.  It is now	possible to remove project
	configuration files, provided there is at least	one left.  The
	aeimport(1) command now	avoids files which have	the same name as the
	default	project	configuration file ("aegis.conf" or "config") and will
	use something else.

	* The aeipass(1) command now adds a symlink from the delta directory
	to the baseline	once it	has been integrated.  This helps lots of
	(idiotic) compilers which insist on burying absolute paths into
	executables.

	* It is	now possible to	assign to some project configuration file
	array fields more than once.  This can be useful where the
	configuration file is split into several pieces	on several branches.

	* The source language has been changed from C to C++.  Future releases
	will take advantage of this.

	* Several bugs have been fixed in the aeget(1) web interface where it
	would display "-42" instead of "0" for changes and branches numbered
	zero.

	* A bug	has been fixed in the aed(1) command when merging files	which
	have been renamed.  It now recognises they need	merging.

	* A bug	has been fixed in the aenf(1) command.	It now correctly
	ignores	difference files when given a directory	name.

	* A bug	has been fixed in aedist(1) where one of the aegis -new-file
	commands was missing a -no-template argument.  Under some
	circumstances, this resulted in	change sets which could	not be aedist
	-received.

	* A bug	has been fixed in the way invalid sequences of multi-byte
	characters are handled by the internationalization code.  This
	potentially affected all reports, listings and error messages.	The
	symptom	was that aeannotate listings could sometimes have a blank
	source code column.

	* A bug	has been fixed in the aepatch(1) command.  It was creating
	empty patches for some changes in completed project branches.  This
	also affected aedist -send and aecp -delta and aecp -rescind in	some
	cases.	It was caused by a subtle flaw in the non-detailed case	for
	the project_file_roll_forward function.

	* A bug	has been fixed in the handling of the MANPATH enviromnet
	variable by the	profile	and cshrc scripts.

	* A bug	has been fixed in the aedist -receive and aepatch -receive
	commands has been fixed.  There	were cases where these commands	could
	access off the end of an array and SEGFAULT.

	* A bug	has been fixed in the aede(1) command when it received pre-
	config-usage change sets.  It used to try to remove the	last project
	configuration file, which is a fatal error, and	made it	impossible to
	receive	the change set.

	* A bug	has been fixed which caused the	aetar(1) command to hang
	(actually, any thing which consulted LDAP or NIS) because the reserved
	symbol "send" was being	overloaded.  The reserved symbol "clone" was
	also being overloaded.	Both have been fixed.

	* A bug	has been fixed which caused the	aedist(1) command to reprt the
	wrong error when the input file	did not	exist.

	* A bug	has been fixed in the aenbru(1)	command	which made project
	aliases	disappear.

	* A bug	has been fixed in the aede command.  It	would fail with	new
	build files already in the baseline.

   Version 4.16	(14-Jan-2004)
	* There	is a new aecp -keep option, causing aecp(1) not	to overwrite
	file contents in the development directory.

	* The aedist -receive option now understands changing the type of a
	file.

	* It is	now possible to	specify	a URL to the -file option on the
	command	line of	aedist(1), aepatch(1) and aetar(1).  The data will be
	downloaded and applied.

	* More work has	been done towards making the code compilable by	a C++
	compiler.

	* The project list (see	ael(1),	aeget(1), etc) is now sorted in	a
	slightly more natural way, as are the version statistics at the	end of
	an aeannotate(1) listing.

	* A bug	has been fixed in aede(1) for branches,	where Aegis would
	complain about build source files (created by the aenf -build command)
	being out-of-date.  This, of course, was difficult or impossible to
	fix, and unnecessary because the next build would fix them.

	* A bug	has been fixed in the aecp -independent	command, where it did
	not preserve the execute bit, nor honour the user's umask.

	* The missing aemt and aemtu alias ve been added to the	profile.

	* More detail has been added to	aepconf(5) detailing how to create the
	project	configuration file for the first time.

	* A bug	has been fixed in aedist(1) and	aepatch(1) which would cause
	an assertion failure (or segfault) when	you tried to aedist -send
	-delta -es files which did not exist at	that delta.

	* A bug	has been fixed in aedist(1) and	aepatch(1) which caused	an
	assert failure (or segfault) when you tried to send a file which had
	been created and removed in a branch, and after	the branch was
	integrated only	a remove record	exists in the parent branch.

	* The problem with test	134 failing has	been fixed.

	* A bug	has been fixed in aeipass(1) which prevented changing a	file's
	usage from being as straight-forward as	it should have been.

	* The source RPM (and the spec file) now has Build Prequisites
	specified.

	* The -Change option now accepts more than just	a change number.  It
	now accepts many forms similar to those	used by	the ${version}
	substitution, allowing its output to be	used directly as command line
	input; forms such as -c	1.2.C34	and --c=5.6.D78	are now	understood to
	imply a	-branch	option as well as either -change or -change-from-
	delta, respectively.  In addition, you may prepend a project name, to
	imply the -project option as well; form	such as	-c aegis.4.15.C28 are
	understood.

	* The aemeasure(1) program now also generates Halstead metrics.

	* A bug	has been fixed in the symbolic link handling code.  In some
	cases it would report "multiple	user permissions (bug)"	and not
	complete correctly.

	* A bug	has been fixed in the test of aedist(1)	for moved files.
	There was nothing wrong	with aedist(1),	the test itself	was broken.

   Version 4.15	(17-Nov-2003)
	* A bug	has been fixed in "ael cf".  It	used to	fail an	assertion when
	there were no files in the change.

	* A bug	has been fixed which caused aeipass to segfault	when adjusting
	file modification time stamps in some circumstances.

	* A bug	has been fixed in the cross branch merging code.  It would
	sometime erroneously complain about files no longer being in the
	baseline.

	* A bug	has been fixed which caused aedist(1) and aeannotate(1)	to
	segfault.  It was caused by the	roll forward history mechanism
	ignoring some branches in some cases.

	* A  bugs has been fixed in the	aenrv -Descend_Project_Tree option,
	which was free()ing a project twice, sometimes causing segfaults.

	* The aeget CGI	interface is now able to retrieve historical versions
	of files.

	* The aeget CGI	interface now has support for file metrics.

	* The aeget CGI	interface has been enhanced to provide more
	information about project files	and change files: activity, conflicts,
	history.

	* The aeipass(1) command now sets the AEGIS_INTEGRATION_DIRECTORY
	environment variable before running the	integrate_pass_notify_command,
	so that	you can	add a symlink for compilers which insist on placing
	absolute paths into debugging information in object files.

	* The aeget CGI	interface has been enhanced to provide more
	information about project files	and change files - activity,
	conflicts, history.

	* The aeget CGI	interface now reports more project information.

	* The aeget CGI	interface now has download links in many of its	menus,
	allowing more and better downloads than	the old	aegis.cgi(1) script.

	* The way aenf(1) and aent(1) work have	been made more generous.  It
	is now possible	to aerm(1) a file and then aenf(1) or aent(1) the same
	file in	the same change.  This is useful for changing the type of a
	file.  Previously this has to be done as two consecutive changes.

	* The aecp -independent	command	has been enhanced to allow you to
	extract	versions of built files	(created with aenf -build and
	maintained at aeipass(1) time).

	* Documentation	has been added to aer(5) for the try/catch mechanism.

	* There	was a disagreement between the aereport(1), aeannotate(1),
	aedist(1), aefind(1), aeimport(1), aels(1), aepatch(1),	aerect(1),
	aetar(1) and aexml(1) man pages	and the	commands themselves about the
	existence of the -version option.  The commands	now behave as
	documented.

	* There	is a new Project_Branch_Dates report, which may	be used	to see
	when branches of a project were	begun and completed.

   Version 4.12	(29-Sep-2003)
	* A bug	has been fixed in aedist(1) where it handled moved files
	incorrectly.

	* There	is a new experimental aeget(1) program.	 It is a potentially
	faster,	potentially more capable replacement for the aegis.cgi(1)
	script.	 At the	moment it isn't, it's experimental.

	* A bug	has been fixed in aedist(1) where it would sometimes segfault
	when sending transparent files.

	* Command completion now works for the aemt(1) and aemtu(1) commands.

	* A bug	has been fixed where the symbolic link farm could point	to the
	wrong place when change	files are transparent.

	* Change file notification commands have been added for	the aemt(1)
	and aemtu(1) commands.	See aepconf(5) for more	information.

	* A bug	has been fixed in aefind(1) command where it could report
	files which had	been removed.

	* A bug	has been fixed in the aecp(1) command where it would scramble
	the aet	-reg exemption.

	* A bug	has been fixed in the aede(1) command.	The problem manifested
	as an aet -reg command which terminated	early.

	* There	is a new aexml(1) command.  You	can now	obtain various pieces
	of the Aegis database as XML.  See aexml(1) for	more information.

	* The the new_file_command, copy_file_command and remove_file_command
	fields of the project config file are now defaulted correctly.

	* Theer	is a new $change_files substitution.  See aesub(5) for more
	information.

	* The project config file has a	new architecture_discriminator_command
	field.	Now you	can use	an arbitrary command (rather than uname(2)
	information) to	determine the architecture.  See aepconf(5) for	more
	information.

	* The Russian message translation has been updated.

	* The German message translation has been updated.

	* The ael(1) command now has a new incomplete listing.	It lists
	changes	between	awaiting review	and being integrated. inclusive.

	* The ael(1) command now accepts arguments for the listings.  The
	default-change,	default-project, outstanding-changes and user-changes
	lists now accept a user	name argument.

	* The aemt(1) command now understand the -UNCHanged option, so that
	files which are	in the branch, but unchanged from the deeper branch,
	may be made transparent.

	* A bug	has been fixed in the wecp(1) command where the	-OverWrite
	option did not honor the presence/absence of the -ReadOnly flag.

	* There	is a new aeedit	script.	 See aeedit(1) for more	information.

	* A bug	has been fixed in the file history mechanism (as used by the
	-delta options,	aeannotate(1), aedist(1), aepatch(1), etc) which did
	not correctly understand transparent files.

	* The aeclean(1) command now touches all of the	source sfiles.	It
	also accepts a -NoTouch	option.

	* There	is a new $change_files substitution.  See aesub(5) for more
	information.

	* The aeclean command now touches the source files as well.  Use the
	now -no-touch option if	you don't want this.

	* There	have been several improvements to the output of	the aegis.cgi
	script and the web site.

	* For Aegis developers:	all of the K&R insulation has been removed;
	you now	need an	ANSI C compiler	to build Aegis.	 Some preparation has
	also been done to get the source ready for a C++ compiler.

   Version 4.11	(29-Jan-2003)
	* For Aegis developers:	the developer build now	uses sudo(8) to
	simplify and automate the tricky bit.  The regular distribution	build
	is unchanged.

	* A bug	has been fixed where the 'aet -reg' command could not find any
	tests to run, cause by inconsistencies in the view path	handling for
	project	file searches.

	* A partial Romainian translation has been added.

	* A Spanish localization has been added.  It needs work	by a human.

	* The French localization has been improved.

	* The aedist(1)	command	now preserves the executable bit on files.

	* There	is a new -descend-project-tree option for the aena(1),
	aera(1), aend(1), aerd(1), aeni(1), aeri(1), aenrv(1), aerrv(1)	and
	aepa(1)	commands, to apply the action to all descendant	branches of
	the project.

	* A bug	has been fixed in tkaer(1) which stopped it working on some
	systems.

	* The aeintegratq(1) command now copes better with changes leaving the
	awaiting integration state.

	* A bug	has been fixed in the aeimport(1) command which	misunderstood
	RCS branches.

	* A bug	has been fixed where there aenf(1) command would use the new
	config file about to be	created, which was almost always wrong.

	* There	is a new ${substr} substitution.  See aesub(5) for more
	information.

	* The aeclone(1) command now understands transparent files.

	* The aecpu(1) command now restores test exemptions in some cases.

	* There	is a new aemeasure(1) command, which procudes simple file
	metrics	for use	with Aegis.

	* There	is a new project ancestors report.

	* Trunk	version	number no longer have a	leading	dot.

	* Command line completion now works for	zsh(1).

	* The aetar(1) command now preserves the executable bit	on files.

	* A bug	has been fixed which caused aetar(1) to	hang.

	* The aereport(1) and aesub(1) commands	now gave the same email
	address	for users.

	* The aeannotate(1) command now	olny prints caption columns if their
	value changes.	This highlights	the differences, and is	less
	distracting.

   Version 4.10	(24-Dec-2002)
	* There	is a new aemt(1) command, used to make branch files
	"transparent".	This is	like an	aecpu(1) command for branches, but
	done through the agency	of a change set.

	Note: The behaviour of the view	path in	the presence of	transparent
	files is complete, however full	support	for aecp -delta	and reports is
	not.  Support will be present in the next release.  File transparency
	information stored by this release will	be able	to be used by aecp
	-delta and reports in the next release.

	* There	is a new aemtu(1) command, to undo the effects of the aemt(1)
	command.

	* It is	now possible to	use the	aeclone(1) command on changes in the
	awaiting development state.

	* The problematics directory permissions check has been	removed	from
	the aeintegratq(1) command.

	* A bug	has been fixed in aecp(1) when retrieving deltas before	files
	were removed.

	* There	are new	${split} and ${unsplit}	substitutions for manipulating
	search paths (etc).  See aesub(5) for more information.

	* A bug	has been fixed where test time stamps were not updated for
	batch tests which covered multiple architectures.

	* The aedist(1)	program	now includes a change number, which will be
	used on	receipt	if possible.  Note that	this produces .ae files	which
	are not	backwards compatible; the -nopatch option will suppress
	inclusion of the change	number in the archive.

	* A German translation of Recursive Make Considered Harmful has	been
	added, courtesy	of CM Magazin.

	* A bug	with aeimport(1) and removed files has been fixed.

	* A problem has	been fixed with	the transition case when a project
	changed	from develop_end_action	= goto_being_reviewed to
	goto_awaiting_review while having changes in the being reviewed	state.

	* A problem with long command lines has	been fixed in the aedist
	-receive, aepatch -receive and aetar -receive commands.

	* A problem with aeimport(1) and binary	files has been fixed.

   Version 4.9 (23-Oct-2002)
	* The aepatch(1) and aetar(1) commands now accept -add-path-prefix and
	-remove-path-prefix options, for manipulating the filenames when
	unpacking an creating a	change set.  The aepatch(1) documentation has
	been significantly improved.

	* There	is a new aecp -rescind option, which may be used to rescind
	(roll back) a completed	change.	 See aecp(1) for more information.

	* The Debian /etc/mailname file	is now understood by the ${user	email}
	substitution.

	* There	is a new project_gantt report, which produces comma-separated-
	value (CSV) output, for	extracting data	to import into Ms. Project.
	Unfortunately, Mr. Project does	not yet	know how to import CSV files.

	* It is	now possible to	provide	a comment to the aerpass(1) command,
	just as	you always could to the	aerfail(1) command.

	* The aet(1) program now has a -progress option, to tell you where it
	is up to.  See aet(1) for more information.

	* The Russian error messages have been updated.

	* The aeimport(1) program now understands the CVS Attic	directory.

	* There	are new	perl, PLural_Forms, capitalize,	downcase and upcase
	substitutions.	See aer(5) for more information.

	* A work-around	for the	aeimport/delta bug has been added, for
	projects which were imported with the buggy aeimport.

	* Aegis	developers will	need to	upgrade	to GNU Autoconf	2.53 or	later,
	as the GNU Autoconf files have been updated to work with that version.
	This does not affect normal users.

	* Many typos have been fixed in	the documentation, and some
	improvements have been made.

	* Some build problems have been	fixed.

	* Numerous improvements	have been made to the web interface.

   Version 4.8 (19-Aug-2002)
	* A bugs has been fixed	in the aetar -receive command, where it
	incorrectly complained about shorty input files.

	* Numerous changes have	been made to the web interface.	 They now use
	cascading style	sheets,	have more navigation links, and	inclde tarball
	downloads.

	* Several build	issues have been resolved.

	* A bug	has been fixed in the aeimport(1) command.  The	symptom	was
	that the aecp -delta command misbehaved.  The probelm was that the
	first delta needed a timestamp prior to	the first change set taken
	from the import	sets.

	* A bug	has been fixed in the aepatch -send command, where it would
	add Index lines	for files with no differences.

	* A bug	has been fixed in the protect_development_directory = true;
	handling, where	it would cause a "multiple user	permissions setting"
	error message.

   Version 4.7 (6-Aug-2002)
	* The aefind(1)	command	now has	-resolve as the	default.  To get the
	previous behaviour, use	the -NoResolve option.

	* In the aeca -e and aepa -e commands, it is now possible to quote
	strings	with at-signs (@) instead of double quotes.  This type of
	string allows newlines within the string.  See aegis(5)	for more
	information.

	* For the benefit of Aegis developers, there is	now HTML documentation
	genaretd by Doxygen (if	you have Doxygen installed).  When developing
	an Aegis change, in your development directory,	point your browser at
	doxygen-html/index.html.  The common/str.h file	is an example of the
	style desired, should you wish to contribute to	the effort to get all
	of the header files suitably annotated.	 Also, the removal of the K&R
	C support has started, see the files in	common/*.[ch] for examples.
	Also <varargs.h> is not	longer used anywhere.

	* The aedist(1)	command	has two	new options, -patch and	-nopatch,
	which may be used to control how and when aedist uses patches.	See
	aepatch(1) for more information.

	* A bug	has been fixed inthe strncasecmp function.  This only affected
	you if your system did not have	a native version of this function.

	* The aeca(1) command now accepts a -fix-architecture option.  This
	option may be used to correct the architecture list of a change
	automatically.

	* The aedist -receive command now runs the aeca	-fixarch command when
	a change set arrives which modified the	project	config file.  This
	should fix many	of the "architecture not in project configuration
	file" problems when seeding new	projects.

	* Some deficiencies on the "How	to Become a Developer "	instructions
	have been addressed.  The native Aegis build (but not the Makefile.in)
	now builds the "tags" and "TAGS" files so that it easier to navigate
	the sources.

	* There	is a new aetar(1) command.  It may be used to send and receive
	tarballs as Aegis change sets.	See aetar(1) for more information.

	* Missing documentation	on the aepconf(5) man page about the fine
	grained	file change notification commands has been added.

	* Some changes have been made to the Aegis web interface, with more
	back links.  Also uses html2diff(1) if available.

	* It is	now possible for reviewers to use the aet(1) command to	run
	tests against the changes they are reviewing.

	* The command completion for the aet(1)	command	now works better; it
	now completes project test names as well as change test	names.

	* The aepatch(1) and aedist(1) commands	now cope with a	wider range of
	input vagueries, including some	weird things done by MTAs and more
	content	transfer encoding synonyms.

   Version 4.6 (11-Jul-2002)
	* The aeipass(1) command now sleeps, rather than issue the rather
	alarming "warning: file	modification times extend into the future"
	message.  There	is a new project config	file field, build_time_adjust,
	which controls this behaviour, but it is strongly recommended that you
	leave it on the	default	setting.

	* There	is a new ${base_relative} substitiontion, almost the inverse
	of ${source}.  See aesub(5) for	more information.

	* A bug	has been fixed with the	aeca and aepa -edit option.  It	was
	caused by the change in	the previous release which added editor	user
	preferences.

	* A few	build problems have been fixed.

	* A bugs has been fixed	in the tkaepa script.  It would	sometimes fail
	the "OK" button.

	* A bug	has been fixed in the "user changes" list.  It was not
	explicitly passing the project name when it accessed the list of user
	owned changes.

   Version 4.5 (26-Jun-2002)
	* It is	now possible to	set pager and editor preferences in your
	.aegisrc file.	See aeuconf(5) for more	information.

	* A bug	in aepatch -receive has	been fixed, where it would sometimes
	misapply a patch. The search used to determine the patch position
	(when it needs to be offset) has been improved.

	* The aedist(1)	and aepatch(1) commands	now accept -delta and -delta-
	date options.

	* The integrate_q.sh shell script has been replaced by the
	aeintegratq(1) Perl script.  It	can now	lots more useful things.  See
	aeintegratq(1) for more	information.

	* A bug	has been fixed in the date parsing code	(used by the -delta-
	date option).  There was the potential to mis-calculate	dates after
	February 2000.

	* A bug	has been fixed in aepatch -receive, where it sometimes
	complain of "no	uudecode data in file",	for files which	did not
	require	uudecoding.

	* There	are more change-specific substitutions available.  See
	${change ...}  within aesub(5) for more	information.

	* The aepatch(1) command now understands ordinary diff listings, in
	addition to the	context	and unified differences	it already understood.

	* There	is a new aeannotate(1) command,	used to	produce	annotated
	source file listings.  See aeannotate(1) for more information.

   Version 4.4 (12-May-2002)
	* It is	now possible to	specify	system wide user preferences.  See
	aeuconf(5) for more information.

	* The aepatch(1) command now understands the quoted-printable content
	transfer encoding.

	* The aepatch(1) is more robust	when receiving patches that want to
	use a change number that has already been used.

	* The Dutch error message translations have been updated.

	* There	was a problem with the way the install directory for aegis.cgi
	was being determined.  The aegis.cgi script is now installed into
	$bindir	by default.  There is a	aegis.cgi.i helper script to find your
	web server's cgi-bin directory and copy	aegis.cgi there, but this is
	not done automatically.	 See aegis.cgi(1) for more information.

	* Another change has been made to cope with still more Bison changes.

	* A French error message translation has been contributed.

	* A problem with aedist	-receive has been fixed, where the new
	configuration_directory	could interact with the	order of file
	creation.

	* A big	has been fixed in the uuencode output, which could
	occasionally miss the "begin" line.

	* A bug	has been fiexed	in the context diff parsing, where it would
	get the	last hunk wrong	if it was a hunk which deleted lines, due to
	incorrect end-of-file handling.	 This affected both aepatch -receive
	and aedist -receive, because aedist(1) now includes patches for	better
	merge behaviour.

	* Numerous issues concenting the new GNU Gettext versions have been
	addressed.

	* A number of Solaris build problems have been fixed, and one genuine
	bug buried in the warning messages (change completion time was wrong
	for changes not	yet completed).

	* More information about the "mod times	extend into the	future"
	warning	issued by aeipass(1) has been added to the man page.

	* Some improvements have been made to the web pages.

   Version 4.3 (16-Apr-2002)
	* The notification shell scripts all now use sendmail consistently.
	Autoconf support for locating sendmail is not yet present.

	* A problem which caused a core	dump on	Cygwin has been	fixed.

	* The aede(1) command now gives	a more informative error message when
	files in a branch require merging.

	* There	is now an interconnection between the aeib(1) and the aeb(1)
	command.  When you specify a minimum integrate begin, you also get a
	minimum	integrate build.

	* A bug	has been fixed which caused aenf(1) to dump core if you	used
	the file name accept pattern.

	* The executability or otherwise of each source	file is	now
	remembered.  If	any of the execute bits	are set	at aede(1) time, the
	file is	remembed as executable.	 When an executable file is copied
	into an	integration directory or development directory,	all of the
	execute	bits (minus the	project	umask) are set.

	* A bug	has been fixed in the "aecp -ind" command, where it would give
	a "there is no development directory" error when you tried to extract
	a file version from history of a completed branch.

	* Many of the web pages	have been updated to provide a more consistent
	and intuitive interface.  It is	also possible to get patches, via the
	aepatch	command.

	* Interrupts are now ignored during database writes.  This should
	alleviate some of the problems induced by Ctrl-C.  (It would be	nice
	to find	the actual cause.)

	* The aedist(1)	command	has been enhanved to include a patch fragment
	for modified files, as well as the whole source	files.	On receipt, if
	the patch applies cleanly the whole source is ignored.	If the file
	does not exist at the receiving	end, or	the patch does not apply
	cleanly, the whole source file is included.  The incrimental cost is
	very low, because all of the patch pieces appear in the	source file,
	and thus compress exceptionally	well.  The net result is to greatly
	reduce merge costs on recipt of	.ae files.  However, this change to
	aedist(1) is only backwards compatiple.	 Previous versions of
	aedist(1) will give a fatal error if they see a	.ae file generated by
	this version of	aedist(1).

	* File name resolution is now more robust in the face of permission
	problems.

	* Some error message translations have been improved.

	* A small bug has been fixed in	the history labeling.

	* You can now use shell	(#) and	C++ (//) comments in your project
	config file, if	you prefer them	to C comments.

	* A bug	has been fixed in the maintenance of the symlink farm.	It
	would often fail to make all of	the necessary symlinks.

	* There	is a new project attribute, protect_development_directory,
	which when true	causes the development directory to be read-only in
	states between awaiting_review and being_integrated.

	* A problem has	been fixed where some reports would fail is users had
	made their .aegisrc files unreadable.

	* A number of small build problems have	been fixed.

	* Command completion has been added for	the aeb(1), ae_c(1), aeca(1),
	aecd(1), aechown(1), aeclean(1), aecp(1), aecpu(1), aedb(1), aedbu(1),
	aede(1), aedeu(1), aedn(1), aeib(1), aeibu(1), aeipass(1), aeifail(1),
	aena(1), aencu(1), aend(1), aenf(1), aenfu(1), aeni(1),	aenrv(1),
	aentu(1), ae_p(1), aepa(1), aera(1), aerb(1), aerbu(1),	aerd(1),
	aerfail(1), aeri(1), aerm(1), aermu(1),	aerpass(1), aerpu(1), aerrv(1)
	and aet(1) commands.  More will	be added in the	future.

	* It is	now possible to	specify	a directory to contain project config
	file fragments.	 These fragments are then read in as if	catenated as a
	single project config file.  See aepfonf(5) for	more information.

   Version 4.2 (26-Feb-2002)
	* There	is a new "--No-Page-Headers" option which may be used to
	suppress page and column headers in listings and reports.

	* There	is a new "aecp -delta-from-change" option, allowing the
	specification of a delta number	by specifying the number of a
	completed change.

	* The "aecp -ind -delta" command now omits files which did not exist
	at the given delta.

	* There	is a new history_label_command which may be used to label your
	history	files at each integration.  See	aepconf(5) for more
	information.

	* The code which guesses which change you are working on, based	on
	your current directory,	has been enhanced to cover far more cases.  It
	can recognize the integration directory, too.

	* There	is a new Change_Log report, which generates reports in the
	style of common	Internet change	logs.

	* The web interface is now able	to show	you file differences between
	deltas.

	* A bug	has been fixed in the "aecp -delta" command (for all delta
	variants).  The	problem	occurred when you wanted to copy a version of
	the file before	the file has been modified by the branch (but it
	wasonly	a problem for files modified later in the branch, files	never
	modified by the	branch were OK).  As a side-effect of the bug fix,
	"aecp -delta" now goes significantly faster (N times faster, where N
	is the number of files you are copying).

	* Build	problems caused	by new Bison releases have been	fixed.

	* A number of oversights in handling the new awaiting review state
	have been corrected.

	* The ${expr} substitution has been enhanced to	include	modulo,
	logical	not and	the six	relative operators.  All using the usual C
	syntax and precedences.	 See aesub(5) for more information.

	* There	is a new ${switch} substitution, see aesub(5) for more
	information.

	* A Russian localization of the	error messages has been	contributed.

	* A bug	has been fixed in the "aecp -output" code, which sometimes
	incorrectly created directories.

	* A bug	has been fixed in the symbolic link maintenance	code.  It now
	repairs	links which point to a file which is too deep in the ancestor
	tree, and has been subsequently	replaced.  It now uses a single	pass,
	rather than two	passes.

	* The change_file_command field	of the project config file is now
	available at a finer granularity.  There are 8 new commands (the
	copy_file_command, copy_file_undo_command, new_file_command, new_-
	file_undo_command, new_test_command, new_test_undo_command, remove_-
	file_command and remove_file_undo_command fields) which	may be
	individually configured.  They default to the previous behaviour, for
	backwards compatibility.  See aepconf(5) for more information.

	* A bug	has been fixed in the aepatch(1) command, which	prevented it
	form constructing patches for changes on completed branches.

	* The aeipass(1) command now issues an error message if	the build
	changes	a source file.	(Previously it erroneously reported that the
	history	tool had done the damage.)

	* A bug	has been fixed in "aecpu -unchanged" in	the case where the
	change had no files.  (It tried	to uncopy a file called	the empty
	thring.)

	* The missing aemvu(1) man page	has been added.

   Version 4.1 (6-Dec-2001)
	Note: You will need to upgrade all of your Aegis machines
	simultaneously for this	release.  It introduces	database changes which
	older Aegis release will not be	able to	cope with.

	* A bug	has been fixed in aed(1), which	tried to access	a nonexistent
	files under some circumstances.

	* A bug	has been fixed in aede.	 When two changes created the same
	file, the second change	received a misleading message from aede.

	* There	is a new German	message	translation.

	* There	is a new tkaepa(1) command, giving GUI access to the aepa(1)
	command.

	* The aeclone(1) command now runs the change_file_command and
	project_file_command from the project config file.  This is in order
	to be more consistent withthe aecp(1) command.

	* The "time safe" property described by	Damon Poole mostly applies to
	Aegis' operation.  One last area related to future times and the
	--delta	options.  There	is now a warning in the	instance where non-
	time-safe behavior may occur.

	* The history_put_command and history_create_command field of the
	project	config file are	strongly recommended to	be identical.  It is
	now possible to	only specify the first one, and	the second will
	default	to it.

	* A bug	has been fixed in the aeib(1) command, when the	link_-
	integration_directory field in the project config file is false.

	* There	is a new awaiting review state,	and new	aerb(1)	and aerbu(1)
	commands to go with it.	 It is now possible to configure your project
	to have	changes	enter the awaiting review state	after aede(1), rather
	than the being reviewed	state.	It is also possible to skip the	review
	states altogether and immediatelt enter	the awaiting integration
	state.

	* There	is a new modeP field for the specification of architectures in
	the project config file.  The means that you can designate some
	architectures as mandatory and some as optional.  See aepconf(5) for
	more information.

	* The aenbr(1) command now populates the new branch's baseline with
	symlinks if the	project	config file is set so that they	would remain
	after an integration build.  This is more consistent with the aedb(1)
	behaviour in the same situation.

	* There	have been a number of changes to the web pages,	accompanying
	the move to SourceForge, along with some corrections.

	* There	is a new aels(1) command, which	may be used to list
	directories, annotated with Aegis' file	attribute information.

	* The aeclean(1) command now accepts the -Keep option, so that it
	reports	what it	would do, rather than actually do anything.

	* A problem with the CGI interface, which reported a bug to the	user,
	has been fixed.

   Version 3.29	(31-Oct-2001)
	* The aeimport(1) command can now import CVS repositories which
	contain	binary files.

	* There	is a new ${Read_File_Simple} substritution.  It	is like
	${Read_File}, but is does not substitute into the file contents.

	* The aecp -independent	command	now accepts a -output option.

	* There	is a new ${environment}	substitution, allowing you to access
	environment variables within substitutions.  See aesub(5) for more
	information.

	* There	is a new ${project-specific} substitution, allowing you	to
	define project specific	value to be inserted into various commands.
	See aesub(5) and aepconf(5) for	more information.

	* The aefind(1)	command	now works with completed change.  It searches
	the baseline.

	* A problem with using the ${source} substitution within the
	integrate_pass_notify_command has been fixed.  It was getting the path
	wrong.

	* The batch test command is only ever invoked of there are tests to
	run.  (This fixes a problem where it would simethimes run with no
	arguments.)

	* The web reports now bahave themselves	when the names of non-longer-
	here user appear.

	* A number of errors and typos have been fixed in the documentation.

   Version 3.28	(21-Aug-2001)
	* There	is a new aepatch(1) program, which may be used to send an
	receive	changes	using the classic open source patch format.  See
	aepatch(1) for more information.

	* The general output mechanism (for listings and reports) has been
	rewritten to be	significantly faster.

	* Numerous small things	have been improved in and around the
	./configure script and the Makefile.

	* The web interface has	been improved.	It should result in better
	save file locations being suggested for	.ae files.  cgi	vs downloads

	* Aegis	now takes a baseline read lock during tests, so	that the
	baseline doesn't move out from under your tests, causing mysterious
	failures.

	* A bug	has been fixed in the subst function of	the report generator.
	It was free()in	a string twice.

	* There	is a new ${developer email} substitution, for inserting	users'
	preferred email	addresses into commands.  Useful for the state
	transition notification	commands.

	* There	is now more text in the	aepconf(5) man page, explaining	how
	each of	the pattern fields are applied to file names.  It is now
	explicit when patterns applied to whole	file names, and	when they only
	applied	to path	name elements.

	* A segfault has been fixed in the removed file	whiteout code.

	* The aesub $source substitution now works in combination with the
	-BaseLine option.

	* The aegis.spec file now mentions the executables again.

   Version 3.27	(26-Jun-2001)
	* A bug	has been fixed in the aesub(1) $delta substitution.  It	now
	works correctly	for completed changes.

	* A bug	has been fixed in aermu(1), when used in combination with the
	symlink	farm.  It no longer complains about "multiple user permissions
	set".

	* A serious bug	has been fixed in the locking code.  The bug meant
	that only one build per	project	could happen at	a time.	 (There	was
	never any risk of repository or	Aegis database damage.)

	* A bug	has been fixed in the aedist(1)	command.  It failed to
	correctly recognise files produced using the aedist -send -no-ascii-
	armour option.

	* The aecpu -unch command now deals more gracefully with files which
	have been removed from the project in the mean time.

	* There	is a new change	file history listing, similar to the file
	history	report.	 It is much faster, much more informatuve, and less
	selective.

   Version 3.26	(21-Jun-2001)
	* Some optimizations have been done to the input parsing.  Depending
	on your	architecture, this will	or won't be noticable.

	* The locking has been changed so that aeipass(1) takes	precedence
	over new development builds, so	that there is a	guarantee that
	aeipass(1) will	succeed	in finite time.	 Current development builds
	will run to completion,	but new	development builds will	block until
	the aeipass(1) gets the	basline	lock and subsequently completes.

	* The "file format error" bug in aedist(1) has been fixed.

	* There	is a new project activity report, which	is useful to project
	leaders	to see what has	been happing in	the project, sorted by time
	and then by user name.

	* Aegis	can now	transparently cope with	binary files, even if the
	history	tool cannot.  It does this by using a MIME encoding for	binary
	files.	(This can be configured	away, if your history tool correctly
	handles	binary files.)	See aepconf(5) and the User Guide for more
	information.

	* There	is a fix for the "file unrelated" error	commonly seen on
	Solaris	and BSD	when combined with an automounter, in come cases.  It
	relies on the bash(1) behaviour	which sets the $PWD environment
	variable.  (GNU	libc does this internally to the getcwd(3) function,
	not all	libcs do.)

	* The aer(1) report generator now has access to	the project config
	file fields, through a new config field	in the report generator's
	concept	of the project state.

	* There	is a new aer(1)	$comdir	substitution, which gives access to
	the shared state directory, configured at build	time.

	* The aebuffy(1) now accepts a project name on the command line.

	* There	is a new build_covers_all_architectures	field in the project
	config file, so	that you can tell Aegis	that the build tool builds all
	architectures wimultaneouasly.	See aepconf(5) for more	information.

	* The tkaer(1) command now has a comment editor, so that you can edit
	your review fail comments from within the GUI.

	* A bug	has been fixed which was caused	aenbru(1) to delete one
	directory level	too deep when the branch was removed.

	* There	is a new getuid() function in the report generator.

	* This change fixed a bug in aede(1) where it would not	allow a
	branch,	created	with aeimport(1), with new files which had
	subsequently been modified to end development, when those files	had
	never existed in the baseline.

	* It is	now possible for project administrators	to nominate the
	developer in the tkaenc(1) dialog.  You	are presented with a pick
	list.

	* There	is a new aesub(1) $history_directory substitution.  This may
	be used	in scripts which access	the history tool's files directly.

	* There	is a new change_file_undo_command field	of the project config
	file.  It is similar to	the change_file_command	field (it defaults to
	it if unset), but is executed by all of	the "undo" file	commands.

	* The aede(1) command no longer	cancels	your build and test time
	stamps.	 This means that you don't need	to re-build if you don't
	change anything, after aedeu(1)	or aerfail(1).

   Version 3.25	(3-Apr-2001)
	* It is	now possible to	remove users who's accounts have been removed
	(the affects the aera(1), aerd(1), aeri(1) and aerrv(1)	commands).

	* There	is a new --description-only option to the aeca(1) command.
	This is	useful for editing only	the descrioption, and also for use
	within scripts.

	* The --file option has	now been generalized to	accept "-" to mean the
	standard input.	 This is useful	in scripts.

	* There	is a new aebuffy(1) command, which may be used to see what
	changes	a user has outstanding.	 It needs X11 (Tk/Tcl) to work.	 Named
	after the xbuffy(1) command.

	* The tkaer(1) command now presents you	with a "detail"	button,	so
	that you may see the change details when pwerforming a review.

	* The restriction that placed the function name	at the start of	the
	command	line (e.g. the "-cp" of	aecp) has been relaxed.	 This may now
	appear anywhere	on the command line.

	* The Bourne / BASH shell aliases have been improved, so that they now
	preserve quoting of special characters and white space.	 This dates
	from the earliest days of Aegis.  It's wonderful to have it fixed at
	last.

	* There	is a new aemvu(1) command, which may be	used to	undo the
	effects	of an aemv(1) command.	This should prove less confusing than
	the previous method.

	* A big	has been fixed in the aemv(1) command.	It failed to accept
	the --base-relative option, even though	it was documented to do	so.

	* A bug	has been fixed in the quote_tcl() report function.  Is fixes
	the problem with getting the dollars sign into descriptions when using
	the tkaenc(1) command.

	* The SCCS section of the User Guide and example configurations	have
	been updated and confirmed to work correctly, however I've only	tested
	this with GNU CSSC.

	* A bug	in the file name handling has been fixed.  This	was most
	obvious	around the aecpu(1) command when you had create_symlinks_-
	before_build turned on and you were using an automounter, but it
	occured	at other times as well.

	* The aeimport(1) command now understands the SCCS format.  If the
	comments in GNU	CSSC are accurate, this	also means you can import
	BitKeeper repositories,	however	I am unable to confirm this.

   Version 3.24	(10-Mar-2001)
	* There	is a new aeimport(1) command, which may	be used	to import CVS
	archives into Aegis.

	* The cross branch merge has been improved so that it uses an earlier
	version	number than it was using, resulting in a more sensable merge.

	* A bug	has been fixed in the ${quote} substitution which incorrectly
	quoted the exclamation mark (!).  Unfortunately, quoting isn't at all
	simple,	because	you can't exclusively use single quotes	or double
	quotes or backslash.

	* There	is now a ${change description} substitution, allowing you
	access to the brief description	of a change in a substitution.	(The
	suggested RCS history command have been	changed	to use it.)

	* A Dutch localization of the error messages has been contributed.

	* Project administrators can also use the aeibu(1) command.  Handy for
	abandoned integrations which inconvenience everyone else.

	* There	is a new project config	file field, called build_covers_all_-
	architectures, which allows you	to tell	Aegis that your	build process
	can cover all architectures simultaneously.

	* The ${quote} substitution has	been fixed to correctly	quote more
	characters.  It	now prefers the	single quote (but is is	npt possible
	to use this exclusively).

	* The web site now uses	PDF files for documentation, rather than
	gzipped	PostScript.  This was for lots of reasons, including the fact
	theat many folks couldn't work out how to print	them, and also IE
	decompressed them "for free" but left the .gz suffix.

	* The report generator,	aereport(1), can now access fields of the
	.aegisrc file.	This is	important for accessing	the preferred email
	address	in various reports.  * The "aecp -delta" command now adds
	removed	files to the change as removed files instead of	adding them as
	copied-but-empty files.	 This should make reproducing projects more
	accurate, but you need to use aermu(1) to get rid of them ,rather than
	aecpu(1).

	* The aedist program now adds a	"Content-Disposition" header to	the
	files it generates.  This means	MIME programs will unpack it into a
	correctly named	file more often.

	Numerous build problems	have been fixed, both for Unix and for Cygwin
	(Windows).  There have benn some test script improvements, too.

	Contributions have started to roll in using the	"aedist" format.  This
	is very	encouraging.  The instructions for how to do this are
	contained in the "Howto", in the Developer section.

   Version 3.23	(29-Oct-2000)
	* A bug	has been fixed which caused the	report generator change_number
	function to give garbage answers for change number zero	(fortunalely,
	not very common).

	* There	is a new mtime function	in the report generator.

	* There	is a new aecomp	utility, which may be used to compare two
	active changes,	using tkdiff.

	* A bug	in "aesub ${dd}" which reported	the wrong directory when
	applied	to branches, has been fixed.

	* The project config file now contains two new fields, create_-
	symlinks_before_integration_build and remove_symlinks_after_-
	integration_build, which may be	used to	better control the behavior of
	the symlink farm at integration	time.  (Default	behavior is backwards
	compatible.)

	* A new	utility	called tkaer has been contributed.  It is for
	reviewing, and shows you lists of files.  When you click on one, it
	launches tkdiff(1) to examine it.  You're going	to like	this one,
	folks!

	* The aedist -receive command now preserves the	testing	exemptions, if
	possible.

	* A problem with very very large test runs and the --no-persevere
	option has been	fixed.

	* The aenf(1) and aent(1) commands now accept --template and --no-
	template options, to control the use of	new file templates.

	* A nasty Catch-22 in the aedist(1) command has	been fixed, involving
	the (unnecessary) use of new file templates, when the actual template
	files don't yet	exist in the --receive development directory.

   Version 3.22	(13-May-2000)
	* Please Note: Some code has been added	to Aegis to assist in
	diagnosing problems when restoring projects from backups.  If you see
	a message "aegis: project-path:	has been tampered with (fatal)"	this
	means there are	problems with the project file ownerships.  The
	project	owner needs to be >= AEGIS_UID (defaults to 100), and the
	project	group needs to be >= AEGIS_GID (defaults to 10).  Use chown -R
	and/or chgrp -R	to fix these problems.

	* The aesub(1) command now accepts the ${arch} substitution in
	combination with the -baseline option.

	* A bugs has been fixed	in the aedist -receive command,	when one of
	the files was also locked for review.

	* A bug	in aeclone(1) has been fixed, where it dropped file move
	information.

	* The aeib(1) command now correctly validates that youare actually
	allowed	to do this integration.	 This may win the prize	for the	oldest
	Aegis bug.

	* There	is a new ${search_path_executable} substitution.  See aesub(5)
	and aet(1) for more information.

	* Line wrapping	in reports works properly again	for lines with no
	white space.  The previous release broke it when the wide output
	generalization was added.

	* The aet -nopersever option works again.  The previous	release	broke
	it when	the batch test support has implemented.

	* A problem with the aeb(1) command which made it difficult to use
	with th	symbolic link farm (in some cases) has been fixed.

	* A new	report is available from the web interface, showing a change-
	of-state histogram over	time for all state transitions (not just the
	integrate pass transitions).

	* A problem with the aenf(1) command which made	it difficult to	use
	with th	symbolic link farm (in some cases) has been fixed.

	* The aeipass(1) command now preserve file mod times across history
	updates, if the	history	tool gratuitously changes them.

	* The Solaris and IRIX build problems (wputc, et al) has been fixed.

	* Numerous documentation patches were received and have	been applied.

   Version 3.21	(12-Mar-2000)
	* A couple of minor bugs have been fixed in aedist, especially the
	problem	with sending an	baseline image while a change is being
	reviewed.

	* A couple of bugs have	been fixed in the tkae*	commands, in
	partucular they	no longer leave	temporary files	lying around.

	* Lots of stuff	has been added to the HOWTO: a cheat sheet, how	to
	change a project's owner, how to use distributed development, how to
	become a developer.

	* The problem which caused `aesub ${copyright_years}' to contain
	duplicates has been fixed.

	* There	have been Y2K fixes: the date parsing for the -delta-date
	option has been	fixed, and the web page	data has also been fixed.

	* The aet(1) command can now run more than one test at once, if
	configured appropriately.  This	is of most use on systems with more
	than one CPU.

	* The -UNFormatted option no longer truncates column values.

	* The aesub(1) command now accepts the -baseline option, so that you
	can get	project-specific substitution in shell scripts.

	* A bug	has been fixed in tkaenc(1) which gave incorrect testing
	ssttings.  It now also tracks the project testing exemptions.

	* A bug	in aenf(1) has been fixed which	allowed	multiple instances of
	the same file to be created.

	* A bug	has been fixed which caused `aesub ${search_path}' to fail in
	some cases.

	* A bug	has been fixed in aenf(1) which	allowed	you to create the same
	file multiple times, corrupting	Aegis' database	and causing aede(1) to
	report mysterious errors.  Use aenfu(1)	multiple times to untangle
	things.

	* Information has been added to	the section 5 manual pages, detailing
	how to access state information	from within the	report generator.
	This should make writing report	scripts	a little easier.

	* A bug	has been fixed which caused Aegis to misbehave when launched
	by some	versions of cron(8) or at(1).

   Version 3.20	(19-Oct-1999)
	* The aeib command is now more robust about "foreign" files in the
	baseline (e.g. root-owned core files).

	* A bug	has been fixed in the ${administrator_list} substitution.

	* A bug	has been fixed in the aedist --delta option, which caused it
	to dump	core.

	* There	is now a section in the	History	Tool chapter of	the User Guide
	describing how to add checksums	to your	history	files, in order	to
	detect file corruptions.  It is	a general technique which applies to
	most history tools (including RCS).

	* A bug	has been fixed which caused aeclone to misbehave badly when
	dealing	with removed files.

	* There	is now an embryonic "How To" document for Aegis.  Please feel
	free to	contribute subjects.

	* You can now say "-BRanch -" as a synonym for the "-TRunk option, for
	those commands which accept it.

	* The report generator now copes with more types of empty lists.

	* A bug	has been fixed which caused a core dump	instead	of a useful
	error message if you tried to create an	alias with an illegal name.

	* A bug	has been removed which left undeletable	branch aliases if a
	branch was removed.

	* A bug	has been fixed in aenbru which failed to remove	the branch
	development directory .

	* The aenf(1) command now behaves better when you do horrible things
	like turn the files you	created	into directories without telling Aegis
	first.

	* A couple of small bugs have been fixed in the	aenpa(1) command, both
	in error situations.

	* A bug	with the -interactive option has been fixed.  It will actually
	ask you, now.

   Version 3.19	(4-Aug-1999)
	* You can now run a command to generate	new file templates if you
	want, rather than using	a simple string	substitution.  See aenf(1),
	aent(1)	and aepconf(5) for more	information.  The existing
	functionality is still there.

	* There	is a new ${SUBSTitute} substitution, which provides regular
	expression substitutions.  This	is useful in new file templates.

	* A bug	has been fixed which allowed aede of a branch when there were
	some kinds of outstanding changes.

	* The automatic	change number guessing has been	improved slightly, and
	will cope with some more variation in the
	development_directory_template field.

	* There	are two	new commands, aenpa(1) and aerpa(1) for	creating and
	removing project aliases.  This	means that you can give	project
	branches more meaningful names.

	* There	is a new aesub(1) command.  It substitutes its arguments and
	prints them, rather like the echo(1) command.  This is useful when you
	need access to the Aegis substitutions in a script.

	* The command line option "--" is now understood.  It means "the rest
	of the arguments on the	command	line are filenames or strings".
	Because	this makes the options on the command line more	"order
	sensitive" than	usual, use with	care.

	* There	is a new tkaenc(1) command, allowing you to create new change
	via a Tcl/Tk GUI.  (And	a problem with TCL special characters in
	description text has been fixed.)

	* The aenf(1) command now does the right thing with directories	named
	on the command line.  In particular, you can now use "aenf ." to
	import whole directory trees.

	* There	is a new State-File-Name list type, useful when	writing
	cookbooks or makefiles to keep a web page in sync with a change.

	* There	is a new ${capitalize} substitution, useful for	putting	in new
	file templates.

	* A bug	has been fixed which caused aeclean to delete the development
	directory of changes with no files.

   Version 3.18	(8-Jul-1999)
	* A bug	has been fixed which caused aecp -delta	to dump	core in	some
	cases.

	* A bug	has been fixed which caused the	create-symlinks-before-build
	functionality to create	symlinks to deleted files.

	* Still	more typos and minor errors have been corrected	in the
	documentation.

	* The aerp(1) man page has been	moved to aerpass(1).  Similarly	for
	aerfail(1), aeipass(1) and aeifail(1).	This should make things	easier
	for users to find the man pages.

   Version 3.17	(22-Jun-1999)
	* Another aedist bug has been fixed - unfortunately it was introduced
	while trying to	fix the	last one.

	* A Cygwin 20.1	portability bug	has been fixed.

	* There	is a new ${dirname_relative} substitution.  This is useful in
	new file templates, and	also some configured commands.

   Version 3.16	(15-Jun-1999)
	* There	is a new tkaeca	command.  It is	a GUI interface	to the aeca(1)
	command, using Tcl/Tk.

	* There	are two	new reports available: the Project-Branches and
	Project-Active-Branches	reports	may be used to query about branches
	within a project.

	* A bug	has been fixed in the aedist -receive duplicate	suppression
	code.  It was complaining about	user permissions.

	* A bug	has been fixed in aeb(1), which	did strange things if you
	tried to build an unbuildable change.

	* There	is a new -No-WhiteOut option for the aerm(1) and aemv(1)
	commands, letting you suppress the "whiteout" files, along with	some
	explanation in the man page about why they are there.  See aerm(1) for
	more information.

	* The default value of the "maximum_filename_length" field of the
	project	config file has	been raised from 14 to 255.  If	your project
	depends	on the old default value, you will need	to set it explicitly.

	* The aedist -receive command now accepts a -directory option, so you
	can specifiy the location of the development directory.

   Version 3.15	(2-May-1999)
	* The "aedist -receive"	command	now accepts a -delta option, allowing
	a received change set to be applied to an historical version.

	* There	is now some information	about managing super-projects and sub-
	projects in the	Branching chapter of the User Guide.

	* The aenpr(1) command now accepts a -keep option, so that you can re-
	attach projects	moved after using the aermpr -keep command.  See
	aenpr(1) for more information.

	* The aenpr(1) command now accepts -edit and -file options, allowing
	you to specify project attributes when creating	the project.  See
	aenpr(1) for more information.

	* If the project developers_may_create_changes attribute is true, the
	aencu(1) command now allows developers to destroy changes they
	created.

	* There	is a new add_path_suffix substitution, for manipulating	search
	paths.	See aesub(5) for more information.

	* There	are 3 new substitutions: ${bindir}, ${datadir} and ${libdir}.
	These are replaced by the ./configure options of the same name (or the
	values calculated, if none were	given to ./configure).	The old	${lib}
	substitution is	deprecated in favour of	the new	${datadir}
	substitution.  See aesub(5) for	more information.

	* Some changes have been made which increases portability,
	particularly the Linux libc5 vs	libc6 differences.

	* Some changes have been made which increases portability,
	particularly for Windows NT.  This isn't to say	Aegis works under
	Windows	NT yet,	but it helps the porting efforts.  Don't forget	to run
	the mkpasswd and mkgroup utilities included in the Cygwin system.

   Version 3.12	(26-Mar-1999)
	* The way the Apache configuration files are scanned for and read has
	been changed, to adapt to recent Apache	changes.  The ./configure
	script will now	find it	more often.

	* The "aedist -receive"	command	has been enhanced to be	more robust
	about change sets without headers (some	browsers generously strip them
	all off.

	* A bug	has been fixed in the "aedist -receive"	command	which
	sometimes caused decompression failures.  An unfortunate interaction
	with the Windows NT support caused CRLF	sequences in the compressed
	data to	be mangled in some cases.

	* The wrong include file was being used	for zlib.  This	has been
	fixed, so it should build more easily now.

	* The way MANPATH is handled on	Linux has been improved	in the chsrc
	and profile commands.  It will not over-ride /etc/man.config now.

	* The aegis.cgi	script has been	made more robust in coping with	aedist
	errors.

	* The symlink_exception	field of the project config file now accepts
	filename patterns, not simply literal filenames.

	* There	was a problem compiling	with gcc 2.8, involving	the <stdarg.h>
	header.	 This has been fixed.

   Version 3.11	(17-Mar-1999)
	* The aet(1) command now accepts a --force option, forcing tests to be
	run, even if Aegis doesn't think they need to.

	* The Aegis CGI	interface has been enhanced so that you	can download
	changes	from the generated web pages listing the changes, using	the
	aedist command.

	* The aedist --send command now	accepts	a --no-ascii-armor option,
	which leaves off the MIME base 64 encoding.  Useful for	binary
	distributions and web servers.

	* There	is a new trojan_horse_suspect field in the project config
	file.  This is used by aedist --receive	to check for files which could
	be abused to carry Trojan horse	attacks.

	* The aedist --receive command now accepts a --trojan option which
	treats the incoming change set as suspect, and a --no-trojan option
	which treats the incoming change set as	benign.

	* The aedist --receive command now quotes filenames (if	necessary)
	when executing commands, thus defending	against	filenames which
	contain	semicolons.

	* The aenbru(1)	command	has been implemented at	last.  At last!	 You
	no longer need to use the aedbu	work-around.

	* The aedbu(1) command now gives an error if you attempt to apply it
	to a branch.

	* The aermpr(1)	command	may now	be applied to a	project	with active
	branches, and will remove the branches as well (provided there are no
	active changes on any of the branches).

	* The dos_filename_required and	windows_filename_required fields of
	the project config file	have been enhanced to reject the brain-dead
	Windows	special	filenames such as "aux"	et al.

	* The ${user} and ${project} substitutions have	been enhanced to
	provide	additional information when given an additional	argument.
	Useful for file	templates.  See	aesub(5) for more information.

	* Several portability enhacements, notably the Windows filename
	incompatibility	has been fixed,	and also the Linux stdlib.h problem.

   Version 3.10	(6-Mar-1999)
	* As of	this release you must have zlib	installed before you can build
	Aegis.

	* There	is a new reuse_change_numbers project attribute, letting you
	control	whether	aenc fills in holes in the change number sequence.
	Defaults to true if not	set.  See aepattr(5) for more information.

	* There	is a new integrate_begin_exceptions field in the project
	config file.  This permits the user to specify file to be omitted when
	the integration	directory copy/link is performed.

	* The aet(1) command has been changed so that it does not exit with an
	error if you have a test exemption but no tests.  This is no longer an
	error.

	* There	is a new aedist(1) command, which may be used to send and
	receive	Aegis change sets via e-mail and the web.

	* The aeclone(1), aenbr(1), aenc(1) commands now accept	a -output
	option,	a file to contain the automatically generated change number.
	This greatly assists in	writing	scripts.  See the man pages for	more
	information.

	* The aent(1) command now accepts a -output option, a file to contain
	the automatically generated file name.	See the	man pages for more
	information.

	* There	is a new compres_database field	in the project attributes,
	allowing the Aegis database to be stored in a compressed form (using
	the GNU	Zip algorthm).	Unless you have	an exceptionally large
	project, coupled with fast CPUs	and high network latency, there	is
	probably very little benefit in	using this feature.  (The database is
	usually	less than 5% of	the size of the	repository.)  On slow
	networks, however, this	can sometimes improve the preformance of file-
	related	commands.

   Version 3.9 (7-Feb-1999)
	* A bug	in the merge command has been fixed.  It no longer deletes all
	of your	change source files if one of the merge	commands fails.

	* There	is a new tkaegis command, using	Tk/Tcl to give Aegis a GUI.
	Contributed by Graham Wheeler <gram@cdsec.com>.	 Please	report tkaegis
	bugs and suggestions to	Graham.

	* The integrate	pass command has been enhanced to cope with RCS	and
	SCCS expanding keywords	in source files	(modifying the repository) on
	check-in.  This	can be ignored,	or a warning can be issued, or it can
	be a fatal error (this is the default).	 See aeipass(1)	for more
	information.

	* The worked example in	the User Guide has (finally!)  been updated to
	use the	new branch numbering.  Numerous	spelling errors	have been
	corrected.

	* The developer	section	of the worked example chapter now also
	includes discussion of some common questions raised by folks
	evaluating Aegis.  It covers insulating	development directories	from
	the baseline, partial check-in and collaboration.

	* The aesub(5) man page	now brings attention to	the fact that the
	${Copyright_Years} substitution	contains spaces.  You often need to
	quote it.

	* The man pages	which mention filename limitations, now	also note that
	where underlying file-system has stricter filename length limitations
	than the filename_maximum_length field in the project config file, the
	file-system wins.  Mention of this is now also present in aedb(1),
	etc; Linux UMSDOS is highlighted as problematic.

	* Aegis	can now	collect	code metrics.  See aeb(1) and aeipass(1) for
	more information.

	* There	are three new report functions available: quote_url,
	quote_html and unquote_url.  These are all for use when	creating Aegis
	reports	for the	CGI interface.	See aer(5) for more information.

	* There	are several new	substitutions available.  These	include	subst,
	trim_extension,	trim_directory,	and trim_filename.  See	aesub(5) for
	more information.

	* The integrate_q.sh script now	works correctly	for branches.

	* Numerous configure, make and install problems	have been fixed	for a
	variety	of portability targets.

	* The RPM spec file has	been corrected to use appropriate file
	attributes.

   Version 3.8 (1-Oct-1998)
	* Some users were unable to build the previous release,	due to
	inconsistent wide character support by the various UNIX	vendors.  This
	has now	been fixed.

	* There	are two	new substitutions, trim_directory and trim_extension,
	which are useful for constructing file templates.  These can be	very
	useful in constructing skeletons of C++	classes.

	* Some changes have been made to pathname handling to better cope with
	automounters.  See aegis(1) for	more information (see discussion of
	the AEGIS_AUTOMOUNT_POINTS environment variable).  This	assumes	that
	paths below the	automounter's mount directory are echoes of paths
	without	it (e.g. /home is the trigger, and /tmp_mnt/home is where the
	NFS mount is performed,	with /home appearing to	be a symlink).

   Version 3.7 (22-Sep-1998)
	* The aeifail(1) and aerfail(1)	commands now have a new	--reason
	option,	to specify the failure reason on the command line, rather than
	in a file.

	* Some file operations are now faster.	Mostly,	this applies to
	operations which mention many files, and to projects with large
	numbers	of files.  Smaller projects may	not notice any improvement.

	* There	is a new --delta-date option to	the aecp(1) command, allowing
	deltas to be extracted by date.	 This change also had the side-effect
	of making extraction by	delta number more accurate on branches.

	* There	is a new --base-relative option	to most	of the file
	manipulation commands, aecp(1),	aenf(1), etc.  This option may be used
	to specify that	relative filenames are relative	to the base of the
	source tree, rather than the current directory.	 There is also a
	related	user preference, see aeuconf(5)	for more information.

	* There	is a new "aeclean" command.  It	can be used to clean your
	development directories	of non-source files.  See aeclean(1) for more
	information.

	* The aeb(1) command now passes	through	arguments of the form
	name=value, on the assumption that these are variable assignments for
	th ebuild tool.	 Previously, they were "resolved" as if	they were file
	names.

	* A serious bug	in the error and interrupt handling has	been fixed.
	This bug would sometimes case Aegis to hang, and eventually run	out of
	stack, when the	user attempted to interrupt Aegis using	^C.

   Version 3.6 (5-Jul-1998)
	* The diff3_command field of the project config	file has been replaced
	by a merge_command field.  It works exactly the	same way, but Aegis
	moves the files	around first, so that the output replaces the change
	source file.  This results in fewer "lost" merges.  Those of you who
	have been hacking the diff3_command to move the	files around will need
	to take	the moves out when you rename the diff3_command	field to be
	the new	merge_command field.

	* The columnizing functions used by the	report generator and the
	listings has been enhanced to understand international character sets.
	This allows native character sets to be	used in	comments and
	descriptions, without getting gibberish	(C escapes) in the output.

	* There	is a new shell_safe_filenames field in the project config
	file.  This field controls whether filenames are required to be	free
	of shell special characters.  This field defaults to true if not set,
	so if you are using any	"interesting" filenames, you may need to
	explicitly set this field to false.  (You still	can't use spaces or
	international characters in filenames.)

	* There	is a new ${quote} substitution for insulating shell special
	characters in filenames	in the commands	in the project config file.

	* A number of bugs relating to environment variables have been
	corrected; this	will make the aereport and aefind commands behave more
	consistently, with respect to the aegis	command.

	* A bug	has been fixed which caused the	final newline of new test
	files to be omitted.

	* A bug	which prevented	the "aeb -minimum" option from working in any
	non-trivial case has been fixed.

   Version 3.5 (28-May-1998)
	* A bug	was fixed in the lock waiting code.  Aegis will	now correctly
	wait for locks when there are several users blocking on	the same lock.

   Version 3.4 (22-May-1998)
	* There	is a new "aegis	-clone"	command, used to replicate changes
	across branches.  See aeclone(1) for more information.

	* There	is a new "-No-Wait" command line option, which asks for	a
	fatal error if a lock cannot be	obtained immediately; this applies to
	all commands which takes locks.	 See aeuconf(5)	for more information.

   Version 3.3 (4-Apr-1998)
	This release is	a bug fix release, and mostly install and portability
	bug, at	that.

	* The problem with errno defines messing up glue.c has been fixed.

	* Numerous fixes to the	wide character support,	to cope	with the
	vagueries of wide character support on many platforms.

	* The problem with the LINES and COLS environment variables messing up
	testing	have been fixed.  Some tests gave false	negatives because of
	this.

	* There	is a new aeb -minimum option, for use with symbolic links,
	only, which has	a minimal set of source	file links, rather than
	everything in the baseline.

   Version 3.2 (22-Mar-1998)
	* There	are some additional reports available via the web interface.
	They are mainly	to extract error causes	and trends from	the project
	history	statistics.

	* There	have been a number of minor bug	fixes concerning the handling
	of old 2.3 projects.  This should ease transition for users with
	existing 2.3 projects.

	* A bug	in aecp	-delta has been	fixed, where Aegis was trying to find
	change state files one branch level too	high.

	* There	is now a re-try	performed when a stale NFS file	handle error
	is detected.  This should make it easier for some sites	which are
	heavily	networked.

	* There	have been some improvements to the way Control-C is handled.
	It should be more responsive when waiting for locks.

	* Project administrators may now end development of a branch.  Since
	branches can endure for	months or years, the orginal branch creator
	may have moved on.  This copes with this situation.

   Version 3.1 (15-Jan-1998)
	Version	3.0 was	not used by many sites.	 It was	available as beta
	software for about a year, in numerous incarnations.  Version 3.1 is
	the first completely stable version since adding full branching
	support.

   Version 3.0
	Version	3.0 is fully backwards compatible with earlier versions,
	however	once a project has been	used under 3.0,	it will	not be
	possible to revert, e.g. to version 2.3, without restoring the
	project's "info" directory from	backup.	 While this was	generally true
	of previous releases, any additional state information was usually
	undo-able with vi(1).  This time the process is	much more involved
	because	the project state files	and the	change state files have	been
	combined as a necessary	step in	implementing branches.

   Version 3.0 Major New Features
	* Aegis	now has	a feature known	in the literature as long
	transactions, also known as branches.  This allows appropriately
	created	changes	to be treated as if they were projects,	and thus to
	have changes made to them.  This allows	a hierachy of changes within
	changes, to any	desired	depth.	See the	Branching chapter of the Aegis
	User Guide for more information.

	* The project state files have been merged with	the change state
	files.	This is	part of	the implementation of branching.  If you have
	written	your own reports, you may need to alter	them slightly.	For
	example, in version 2.3	and earlier, reports accessed the project
	state file using
		auto p,	ps;
		p = project[project_name()];
		ps = p.state;
	Because	the project state has been moved into a	change state, the
	state field above now points at	a change state description, and	most
	of the old project information is contained in the branch field	within
	it.  Reports access this information as
		auto p,	ps;
		p = project[project_name()];
		ps = p.state.branch;
	Except for files, which	were already present in	the cstate, so access
	to the project file list need not change.  See the new aecstate(5) for
	more information.

	* The new project command now creates branches to match	the version
	number specified.  See aenpr(1)	for more information.

	* The error messages of	Aegis have been	internationalized.  This
	affects	how you	build Aegis, and the environment Aegis runs in.	 See
	the BUILDING file for more information.	 The cshrc and profile shipped
	with this release set the LANG environment variable to "en" (for
	English) if you	have not set it; otherwise ther	error messages would
	be terse and uninformative.

	* The aet (1) command can now suggest tests to be run.	This is	done
	by correlating the source files	and test files from each change.  See
	aet(1) for more	information.

	* There	is now an aereport(1) command.	The separates out the report
	functionality from the main body of the	Aegis code, allowing the
	report generator to be used in places where more trust is required.

	* There	is an intranet Web interface, which is installed automaticly
	when the install script	discovers a web	server.	 This interface	allows
	browsing of much of the	Aegis meta-data, of all	publicly accessible
	projects.

	* There	is now an aefind(1) command.  This is very similar to the UNIX
	find(1)	command, except	that it	finds in the unified directory stack
	of a change and	its project.  The introduction of full branch support
	can sometimes mean that	finding	a file may require looking in more
	than two directories; the aefind(1) command makes this simple again.

   Version 3.0 Minor New Features
	* There	is now a -No_Pager option, to prevent listings and help	from
	being redirected to a pager.  There is also a user preference to more
	thoroughly disable paging, and a -PAGer	option to override it.	See
	aegis(1) and aeuconf(5)	for more information.

	* There	is now a -No_PErsevere option to aet(1), allowing you to
	request	that aet(1) stop after the first test failure.	There is also
	a user preference to set this permanently if desired, and a -PErsever
	option to override it.	See aet(1) and aeuconf(5) for more
	information.

	* The copyright	years attribute	has been moved from being a project
	attribute to a change attribute.  This is consistent with a number of
	other fields which have	transparently moved from the project state
	files into the change state files, as a	result of branching support.
	See aeca(1) and	aecattr(5) for more information.

	* There	is a new Search_Path substitution, to support builds on
	branches.  See aesub(5)	for more information.  As a side effect, you
	can also use it	in the test_command field of the project config	file,
	and thus have a	search path to look down for data files	for your
	tests.

	* Test times are now remembered, so that tests are only	run if they
	need to	be.  This allows you to	keep working on	a test,	and Aegis only
	runs those that	have not yet passed.

	* Aegis	now uses "fingerprints"	to tell	if files have changed, rather
	than simply relying on file modification time stamps.  While this
	makes Aegis more robust, there is one caveat: it is recommended	that
	3.0 be installed when there are	no changes in the 'being reviewed' or
	'awaiting integration' states, in any project.

	* There	is now a log file prefernces control, allowing users to	set
	their preferred	logging	behaviour.  See	aeuconf(5) for more
	information.

	* It is	now possible to	specify	the filename for new tests on the
	command	line.  See aent(1) for more information.

	* It is	not possible to	specify	a pattern for test filesnames.	See
	aepconf(5) for more information.

	* There	is now a -MAXimum option to the	aeib command, allowing you to
	keep obsolete derived files at integrate begin.	 This can avoid	long
	integration build times	for large projects.

   Version 3.0 Bug Fixes
	* Architecture names are now checked a `develop	end' time, to ensure
	there are no unknown variants.	This fixes the mysterious "you must
	build again" problem.

	* The aecp(1) and aed(1) commands now take a baseline read lock, to be
	more symetric with the aeb(1) command which has	always done so.	 The
	aeipass(1) command takes the complementary baseline write lock,
	ensuring the the baseline remains constant for the duration of builds,
	file copies, differences and merges.  The manual entries for these
	commands have all been improved	to document this behaviour.  See
	aeb(1),	aecp(1), aed(1)	and aeipass(1) for more	information.

	* There	are now	some reminder scripts in the library, which can	be run
	from crontab(1).  These	are installed into the /remind directory.
	These scripts can be used to remind users of changes in	various
	states,	such as	those being developed or being reviewed.

	* All of the commands which accept the -Edit option now	also accept a
	-Edit_BackGround option, allowing edit commands	to be piped in from
	the standard input.

	* The aecp(1) command now accepts a -INDependent option, allowing
	files to be copied independent of any change (similar to the
	-INDependent option of the command.)  See aecp(1) for more
	information.

	* The aecp(1) command now accepts a -Read_Only option, allowing	files
	to be copied into a change specifically	to insulate it from baseline
	changes.  Such files must be uncopied before development may end.  See
	aecp(1)	for more information.

	* The aenrls(1)	command	is now used only to convert pre-3.0 projects
	into post-3.0 projects.	 This is because the full branching support in
	3.0 makes it more useful to create a new release of a project by
	ending development on the branch of the	previous release and starting
	development of a new branch numbered for the new release.  See the
	Branching chapter of the User Guide for	more information.

   Version 2.3
	* The merging behaviour	of the aed(1) command has changed.  If any
	files require merging, it only merges.	In this	way, merged files are
	not lost in the	rest of	the output.  Also, there are now command line
	options	and user preferences so	that you can select to only merge or
	only difference.  See aed(1) and aeuconf(5) for	more nformation.

	* It is	now possible to	assign symbolic	names to project deltas.  This
	means that you may now recreate	earlier	project	baselines by name.

	* All commands which accept a -Edit option now check for most errors
	before commencing the edit.  This avoids wasted	edits in many error
	cases.

	* Fuzzy	file name matches are now used to improve the error messages
	from aecp, aerm, etc.

	* Version number separators in project names are preserved across new
	releases.  Particularly, you can use a minus ('-') between the name
	and the	major version number.

	* A new	"copyright_years" project attribute has	been added.  This is a
	list of	years maintained at integrate begin time, to automate the
	insertion of list of copyright years into copyright messages and
	documentation.	There is a new ${Copyright_Years} substitution and the
	copyright years	are also listed	in the "aegis -list version" listing.
	See aesub(5) and ael(1)	for more information.

	* It is	now possible to	specify	patterns for acceptable	and
	unacceptable filenames in the project configuration file.  See
	aepconf(5) for more information.

	* Four more functions have been	added to the report language: length,
	split, substr and wrap.	 See aer(5) for	more information.

	* The tests distributed	with  are now more stable on very fast hosts.
	See the	environment variables section of aeb(1)	for more information.

	* The lib/config.example directory of the distribution now contains
	files with example portions of the project config file.	 May thanks to
	David R	Shue <shue@ll.mit.edu> for this	suggestion.

	Changes	made in	the previous release included:

   Version 2.2
	This release of	Aegis provides 3 of the	most commonly requested
	features: support for heterogeneous development, support for a greater
	range of DMTs, support for user-defined	reports.

	* Aegis	now supports heterogeneous development.	 Now you can be	sure
	that your project not only always builds and tests sucessfully,	but
	that it	does so	across a configurable set of system or hardware
	architectures.	See the	Heterogeneous Development secion of the	Tips
	and Traps chapter of the User Guide for	more information.

	* Aegis	can now	cope with a wider range	of Dependency Maintenance
	Tools (DMTs).  It now has the ability to fill development directories
	with symbolic links to all files in the	baseline which are not present
	in the development directory.  This allows DMTs	to assume all files
	are present below the current directory, allowing DMTs such as cake
	and GNU	Make to	be used.  See the Dependency Maintenance Tool section
	of the User Guide and aeb(1) for more information.

	* Aegis	now has	a report generator, so you can create your own
	reports.  Many "canned"	reports	are included in	this distribution; of
	particular interest to many will be the	File_Activity report, which
	details	currently active files.	 See aer(1) for	more information.

	* Aegis	is now configured using	a shell	script called configure,
	distributed with the package.  This shell script is generated using
	GNU Autoconf.  See the BUILDING	file for more information.

	* The AEGIS environment	variable has been renamed AEGIS_PATH, to bring
	it in line with	the AEGIS_PROJECT and AEGIS_CHANGE environment
	variable names.	 The old name will keep	working	for some time, but
	aegis will warn	you.

	* Filename lengths are now configurable.  The 14 character portability
	limit is still the default, but	a higher limit is configurable for
	each project, up to the	filesystem filename limit.  See	aepconf(5) for
	more information.

	* It is	now possible to	specify	that filenames must be within the
	minimum	character set mandated by POSIX.  The default is as before, to
	allow any printing character.  See aepconf(5) for more information.

	* Limits on the	length of project names	have been relaxed.  Project
	names are now only limited by the filesystem filename limit.

	* It is	now possible to	specify	the command to run tests, allowing a
	project	to use a specialized test facility, rather than	be forced to
	use shell scripts.  See	aet(1) and for more information.

	* The commands which accept the	-Edit now preserve the edited text in
	the event of a failure.

	* The commands which delete files now accept a -Interactive option,
	which causes them to prompt the	user for confirmation of file
	deletion.  This	can be made the	default	by an appropriate setting of
	the aliases or individual users	preferences files.  See	aenfu(1),
	aentu(1), aecpu(1), and	aeuconf(5) for more information.

	* The aecp(1) command now accepts directory names, allowing whole
	directory trees	to be copied into a change.  The aecpu(1) command now
	has a -UNChanged option	which allows the unchanged files to be
	uncopied.

	* The aeb command now accepts file names, allowing partial builds to
	be performed.  See aeb(1) for more information.

	* There	is a new aechown(1) command to facilitate reassigning the
	developer of a change which is in the being developed state.

	* It is	now possible for project administrators	to assign changes to
	specific developers.  See aedb(1) for more information.

   Version 2.1
	* Can now ask for history to maintained	for file generated by the
	build.	This is	useful for generating patch files.

   Version 2.0
	* A new	command	has been added to facilitate changing the name of a
	file as	part of	a change.  See aemv(1) for more	information.

	* It is	now possible to	list the locks currently held.	See ael(1) for
	more information.

	* If no	other defaulting mechanism is specified, aegis will now
	attempt	to guess the project name and change number from the pathname
	of the current directory.  This	only works from	within development
	directories.

	* The aenc, aeca, aerfail, aeifail and aepa commands now accept	a
	-Edit command line argument.  See the relevant manual pages for	more
	information.

	* The aenpr command now	understands the	-MAJor and -MINOr options,
	allowing the initial version of	a project to be	something other	than
	1.0.

	* The aed command now understands the -ANticipate option.  See aed(1)
	for more information.

	* It is	now possible to	list all the outstanding changes of a project,
	or of all projects.  See ael(1)	for more information.

   Version 1.4
	* Support has been added for systems without the seteuid system	call,
	or those with crippled implementations.

	* Most of the unimplemented command variants have been finished.
	These include New Change Undo, Develop Begin Undo and ReMove PRoject.
	Most notable of	the exceptions is -ANticipate option for the
	-CoPy_file and -DIFFerence command.

	* The User Guide has been added	to, making it a	little more complete.
	It still needs more work, sigh.

	* The code to handle automounters has been made	more robust.

	* The command substitutions have been vastly improved, and are now
	documented.

Reference Manual		     Aegis			Read Me(Aegis)
