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Revision 1.192 - (show annotations)
Mon Jul 26 05:39:38 2004 UTC (9 years, 9 months ago) by kaz
Branch: MAIN
Changes since 1.191: +5 -0 lines
Merging from mcvs-1-0-branch.
1 Release Notes for Meta-CVS
3 Release 1.1.1, 2004-??-??:
5 Fix for build problem on CLISP patch revisions that have a third version
6 number, for example "2.32.1".
8 Release 1.1.0, 2004-03-12:
10 All Lisp symbols are in a package. Compiling and loading is simplified,
11 and more portable.
13 Release 1.0.13, 2004-03-12:
15 The ``mcvs convert'' command now creates the TYPES and .cvsignore files.
17 Release 1.0.12, 2004-01-31:
19 Fixes various bugs in ``mcvs convert'', so that it is
20 actually useable now, albeit still far from a perfect CVS
21 migration tool.
23 The remap command can now purge the MAP of entries that refer to non-existent
24 F- files, which is useful for cleaning up after the convert algorithm,
25 if necessary.
27 Release 1.0.11, 2004-01-28:
29 Fixes breakage of list-branches command introduced in last release.
31 Fixes failures in grab command when pulling new baseline over
32 partial sandbox. Renamed symlinks, and execute permissions of files
33 were being accessed using abstract instead of real path.
35 Release 1.0.10, 2004-01-09:
37 Builds on CLISP 2.32. The lb command no longer produces bogus warning
38 when working copy is sticky to a version tag.
40 Release 1.0.9, 2003-11-24:
42 Failures to open terminal for reasons other than non-existence
43 of the object are handled (e.g. ``no such device'', etc).
45 The --nometa option now works properly in those commands that
46 operate on the whole project when no file arguments are given
47 (tag, update, commit). Also, these commands no longer implicitly
48 include the meta files when file arguments *are* given.
49 These files can be included explicitly with the --meta global option.
51 Release 1.0.8, 2003-06-03:
53 The Cygwin /dev/tty problem is partially addressed. The program
54 won't fail if /dev does not exist, but emits a warning message,
55 and disables interactive error handling. The workaround is to use
56 ``mkdir /dev''. This is a CLISP issue; its OPEN function expects the
57 full path to a file to actually exist, but on Cygwin, there are fake
58 /dev/* paths even though /dev does not exist. If a real /dev directory
59 does in fact exist, it does not interfere with these magic paths.
61 The ``mcvs fi'' command no longer performs expansion on F- names
62 that are preceded by a slash.
64 Release 1.0.7, 2003-04-23:
66 New commands sync-to-cvs and sync-from-cvs expose the hard link
67 synchronization algorithm.
69 Revamped error recovery logic. To continue in an error situation now
70 consistently means ``take the bold action that may erase data''
71 or ``proceed in the most obvious way to finish the specified job''.
72 It never means ``roll back the operation and bail'', which was
73 confusing.
75 Termination is no longer unsafe; the `T' menu command, and the
76 equivalent --error-terminate global option perform all necessary
77 restoration and cleanup.
79 Errors that have more information to print, like a list of files or
80 whatever, now indicate it in a standard way which translates to the
81 `I' menu command.
83 Chatter output goes to standard error rather than standard output,
84 as do all error messages.
86 The interactive error menu now talks to the user using the controlling
87 tty, meaning that it will work even if the input or output of the
88 mcvs command are redirected. If no controlling tty is available,
89 then interactive error handling is disabled; the default behavior
90 is then like --error-terminate but can of course be overridden by
91 --error-continue.
93 Release 1.0.6, 2003-04-14:
95 The create command detects the existence of text editor backup files (or
96 other junk) in the MCVS directory after the editor is invoked on the
97 TYPES file. The user is prompted regarding their removal. If these files are
98 not removed, cvs import will bring them into the repository.
100 When Meta-CVS has to split a large CVS command into two or more
101 invocations with shorter argument lists, it now does not stop when one of
102 these invocations is unsuccessful; it does all of them, and combines
103 their termination indications by a logical AND. There was a bug in this
104 logic also which caused, upon termination failure, a cvs command to be
105 repeated for the same list of files.
107 Synchronization logic has been revamped. Unnecessary synchronizations
108 have been removed, which will make some commands run faster.
109 Synchronizations now have specific directions; for instance before
110 a CVS commit or update, changes are pushed from the directory tree to the MCVS
111 directory only, and after the CVS operation, in the reverse direction only.
113 Meta-CVS will no longer re-create missing F- files by linking from the
114 directory tree. Doing this causes two problems. One is that if a user
115 manually removes a F- file and do ``mcvs up'', she wants CVS to fetch a clean
116 copy and push it into the tree. She does not want the file to be restored
117 from the tree prior to the CVS update. Secondly, sometimes CVS itself
118 removes files. If we re-create the files, CVS will consider them to
119 be ``in the way''.
121 Failures to read from the MAP or MAP-LOCAL files are treated as interactive,
122 continuable errors. By continuing, the user agrees that the behavior will
123 be as if an empty map were read.
125 The grab command uses less memory for performing move analysis.
127 Release 1.0.5, 2003-02-25:
129 Bugfix: some one-argument command line options of CVS must be
130 specifies as a single parameter, with no separation between the
131 option letter and the argument characters. For example:
133 cvs log -r rev-1::rev-2 # invalid
134 cvs log -rrev1::rev2 # correct
136 Meta-CVS accepts either syntax, but it was generating the first form
137 when calling CVS. Now, *all* one-letter options that have an argument
138 are formatted in the second manner.
140 Bugfix: one more waitpid() issue was fixed; on fast machines, under
141 Linux, it was observed that from time to time Meta-CVS would get
142 a -1/ECHILD when waiting for the CVS process.
144 Release 1.0.4, 2003-02-20:
146 Fix remaining occurences of the CVS ``No child processes'' abort
147 problem, affecting the list-branches command, merge command
148 and the -r option of the filt command.
150 Release 1.0.3, 2003-02-12:
152 ! THIS RELEASE IS WITHDRAWN. It was accidentally created from the
153 ! experimental main trunk of the Meta-CVS codebase, rather than
154 ! the 1.0 branch. But 1.0.4 does contain all of the changes
155 ! described here.
157 Fix for the CVS ``No child processes'' abort problem. It turns out
158 that CLISP sets the signal handling action for the SIGCHLD signal
159 to SIG_IGN, which is inherited by child processes across the
160 fork() and execvp() calls used in our mcvs_spawn() function.
161 We correct the problem by resetting the signal handler to SIG_DFL
162 just before executing the new process image.
164 New feature, --up option. The argument is a nonnegative integer value
165 (default is zero) which specifies how many sandbox nesting levels to
166 escape out of when locating the sandbox root. This helps work with
167 nested Meta-CVS sandboxes.
169 Release 1.0.2, 2003-02-10:
171 Bugfix in waitpid logic in the C library for running external processes;
172 we were not dealing with an interrupted waitpid.
174 Behavior of mcvs tag is changed: when there are no filename arguments,
175 the whole tree is tagged including the metafiles. In other words, it
176 now works like the commit command.
178 Release 1.0.1, 2003-01-30:
180 Hard link sync optimization: update of a subset of files, commit, and
181 other operations like log and diff don't need to synchronize all
182 hard links, just the ones operated on.
184 The merge and remerge commands support -k option for overriding
185 CVS keyword expansion mode.
187 Fixes to getcwd error handling.
189 Improvement in install.sh script's logic for locating CLISP installation
190 directory.
192 Release 1.0, 2003-01-01:
194 NOTE: It's not possible to upgrade to this release via mcvs-upgrade,
195 because it adds some new C functions to the Lisp executable.
197 Security fix: read-time evaluation was not suppressed when reading
198 structured data, like MCVS/MAP and MCVS/TYPES. This means that it
199 was possible for Alice to check in something that would execute
200 arbitrary code on Bob's computer.
202 Optimization: use fork and exec to launch CVS rather than CLISP's
203 run-program function, which indirects through the shell interpreter.
204 (On Cygwin, the spawnvp function is used).
206 Performance fix: stat() was being called superfluously by the
207 hard synchronization code, twice for each file.
209 Build fix: install.sh works when CLISP executable is called ``lisp.exe'',
210 which is the case under Cygwin with newer CLISP releases.
212 Release 0.99, 2002-11-17:
214 New link command for creating symbolic links.
216 Global option -n (dry run---don't modify filesystem) is processed
217 internally now, not just passed to CVS.
219 Failure to invoke text editor is handled.
221 The -r option of filt is fixed; it has been broken since the change to the
222 new MAP format, because it was reading the raw map representation, not
223 passing it through the right conversion steps that are needed now.
225 Bugfix to purge and remap commands: they were fooled by CVS-generated
226 files in the MCVS/CVS directory. Specifically, files having F- names, and a
227 the suffix ,t.
229 Bugfix to add logic in directory restructuring: there was the possibility
230 of mistakingly taking a clobbered local file to be a new local version of
231 the added file, instead of replacing it. This could happen if the local
232 file had a future timestamp relative to the one coming from the repository.
234 The prop command does not synchronize or write out map if no options are
235 specified.
237 Help text added for move and branch commands. Help text for grab rewritten.
239 The CVSEDITOR and VISUAL environment variables are now checked, not
240 only EDITOR.
242 Release 0.98, 2002-10-13:
244 The prop command was mistakenly reading from MAP-LOCAL and writing to MAP,
245 which could cause information loss if the two differ. It now reads from MAP
246 and writes to MAP. (The property changes propagate to MAP-LOCAL by the
247 update operation invoked by prop, as before).
249 Invocation of external programs included in debug trace.
251 The filt command does not filter F- names if they are immediately preceded by
252 the MCVS/ prefix; such occurences are clearly concrete, sandbox-relative
253 references to the actual F- links, rather than abstract references.
255 The update command now supports the -C option, to fetch the repository
256 copy, throwing away local changes. It also now honors the --metaonly
257 and --nometa options.
259 The export command has been added, for checking out documents without creating
260 a working copy (no MCVS directory in the root of the checkout).
262 The watch command has been added. Note that its syntax differs from that
263 of CVS.
265 The watchers, editors, edit, and unedit commands have been added.
267 A script called mcvs-upgrade is now included, and installs alongside the mcvs
268 script. This allows the Meta-CVS Lisp image to recompile and patch itself,
269 giving users of binary distributions an easy way to upgrade from source
270 code.
272 Release 0.97, 2002-10-06:
274 Meta-CVS now builds and runs on Microsoft Windows, under Cygwin
275 (www.cygwin.com). It still relies on hard links, which requires
276 Windows 2000 or XP, and the NTFS filesystem. It probably won't
277 work over FAT.
279 New --debug option for verbose output.
281 Cleaned up of error messages. Error messages don't specify prefixes like
282 ``mcvs-add:'' or ``mcvs-grab:'' any more. Rather, the error handler adds the
283 ``mcvs:'' prefix when printing the messages in a situation when the error is
284 not continuable.
286 Fixed bug introduced in release 0.13: mcvs add -R was adding only
287 directories, effectively ignoring arguments that are regular files.
288 The error-continuation behavior of mcvs add has been revised.
290 Trying to rename an object onto itself, or to move the sandbox root
291 directory are no longer silent no-ops, but produce an error.
293 The remap command now preserves property lists, and picks up changes
294 in executable permission.
296 The grab command now notices when a file changes from having execute
297 permission to not having execute permission.
299 Operations on the path . now work in a partial sandbox.
301 Release 0.96, 2002-09-21:
303 The restore command was left broken during the change to the new
304 filemap format. It is now fixed.
306 The grab command now handles execute permission bits properly.
308 Some more commands have detailed help.
310 There is now a global option -i which specifies a script to be
311 executed. This allows Meta-CVS to be scripted using Lisp. For
312 instance suppose you have the following script and call it
313 list-matching:
315 #!/usr/local/bin/mcvs -i
316 (in-sandbox-root-dir
317 (let ((mapping (mapping-read *mcvs-map*))
318 (test-func (eval (read-from-string (pop *args*)))))
319 (dolist (entry mapping)
320 (with-slots (path raw-plist) entry
321 (when (funcall test-func raw-plist)
322 (format t "~a~%" path))))))
324 Then to list the names of files whose "importance" property is
325 a value greater than two, run:
327 ./list-matching '(lambda (plist)
328 (let ((imp (getf plist :importance)))
329 (and imp (> imp 2))))'
331 WARNING: Scripting accesses the guts of Meta-CVS directly, so scripts may
332 break as Meta-CVS is maintained. There is currently no published set of
333 stable interfaces.
335 Release 0.95, 2002-09-16:
337 The install.sh script no longer uses a borrowed copy of the clisp-link script
338 or the linkkit directory; these have been removed. These materials
339 are available at every CLISP installation; install.sh now finds them
340 and uses them. Users of non-x86 machines ran into problems because of this
341 because linkkit/clisp.h contains architecture-dependent information.
343 A bug in mcvs filt was fixed; it wasn't handling F- names that aren't found
344 in the map.
346 A more detailed help system now exists, though it's not complete. The ``mcvs
347 help'' command acts just like ``mcvs --help'' without any arguments. If given
348 an additional parameter which specifies a Meta-CVS command, it produces more
349 detailed documentation for that comand. Help exists already for a few
350 commands.
352 The release number is being warped to 0.95, which means that Meta-CVS is now
353 in beta. It is only five updates away from a 1.0 release.
355 Release 0.24, 2002-09-08:
357 The mapping entries for both symlinks and files have extensible property
358 lists now. These are stored in the optional fourth and fifth list elements,
359 respectively of the :FILE and :SYMLINK map entries.
361 Versioning of the execute permission of files is supported, represented as
362 the :EXEC property of a :FILE mapping entry.
364 Some lame syntax is provided for manipulating properties:
366 mcvs prop --set foo --clear bar --remove baz main.c list.c
368 will set the property FOO to true, set the property BAR to false,
369 and remove the property BAZ, in the files main.c and list.c.
370 The execute permission is represented by the property EXEC.
372 Release 0.23, 2002-09-02:
374 Bugfix: the grab command notices edited symlinks and incorporates the
375 changes into the mapping.
377 The grab command now figures out moved symlinks. Moved symlinks are those
378 whose pathname has changed, but which continue to point to the same object
379 (which may also have been moved).
381 Release 0.22, 2002-08-31:
383 Symbolic links are now versioned objects. The format of the MAP file
384 changes to accomodate this; the new Meta-CVS will read old MAP
385 files; when it writes it will write the new format. Old Meta-CVS won't
386 read the new format.
388 When a new module is created from an existing file tree, symbolic
389 links will be recognized and added. The add command will also add
390 symbolic links. Symbolic links can be renamed and moved; this does
391 nothing with their contents. They can point outside of the sandbox
392 using relative or absolute paths.
394 TODO:
396 There doesn't exist yet a special command to create symbolic links, nor to
397 retarget them; retargetting a link can be done manually by editing MCVS/MAP
398 and updating. Retargetting a link using the ln -s command, won't
399 backpropagate to the MAP file; an update will clobber the link.
401 The grab command does not yet compute symbolic link moves; a moved symbolic
402 link is treated as a remove and add. This will be easy to fix.
404 The remap command ignores symlinks.
406 Release 0.21, 2002-08-04:
408 Syntax of grab command changed. The branch is no longer specified as an
409 argument, but using the -r command option. If no revision is specified with
410 -r, then a -A must be specified to make the grab go to the main trunk. This
411 is a safety feature, since grabbing foreign snapshots to the trunk is almost
412 always wrong, though it could be useful during backup recovery, or for fixing
413 mistakes.
415 The way operating system functions are targetted has changed. Instead of
416 relying on the ``linuxlibc6'' module provided by CLISP, Meta-CVS now
417 has its own module for calling foreign functions. This module is portable;
418 it does not depend on the layout of glibc data structures. So Meta-CVS
419 is in theory now portable to other Unixes (provided they have /dev/urandom).
421 Release 0.20, 2002-07-27:
423 The commit command does a true global commit when given no file or directory
424 parameters, and not given the --metaonly option. This means commiting all
425 changes in the MCVS directory, even if they are in F-files that are not
426 currently mapped.
428 Release 0.19, 2002-07-16:
430 When moving multiple files or directories to a subdirectory, a
431 restart is now provided to skip over bad ones and continue.
433 Grab no longer scans files if there are only added files, or only removed
434 files. There are no moves to deduce in that case.
436 Restore properly creates lost+found at the root of a partial sandbox,
437 rather than at the abstract root of the module.
439 Some other algorithmic improvements made.
441 The first few sections of a user guide have been written.
443 Release 0.18, 2002-07-07:
445 Cool new feature: checkout takes an extra argument, which specifies a
446 subdirectory of the project. Specifying a subdirectory results in a ``partial
447 sandbox'', whose root directory is the specified subdirectory of the larger
448 project. The rest of the project is ``invisible'' to that sandbox. A
449 subdirectory argument can also be given to mcvs grab, which will cause it to
450 integrate the new source tree against a subtree of the Meta-CVS project
451 rather than the entire project. The subtree doesn't have to exist; in
452 that case you get an empty sandbox. Adding files to this sandbox will cause
453 the tree to exist in the project.
455 Bugfix: mcvs grab was not computing moves properly over small file sets,
456 wrongly treating them as removes and adds.
458 Release 0.17, 2002-07-02:
460 The create command no longer takes a vendor branch. Instead the symbol
461 ``Created-by-Meta-CVS'' is used as the vendor tag to satisfy CVS.
463 The grab command no longer does useless synchronization on files that
464 are about to be deleted.
466 New purge command; does ``cvs rm'' on deleted files, that is to say, F- files
467 that have no mapping.
469 New restore command; re-enters deleted files into the mapping, under
470 the ``lost+found'' directory, using their F- names as sandbox names.
472 Bugfix: when a checkout bails because it is requested over top of an existing
473 working copy, it must not delete that working copy's MCVS sub directory.
475 Release 0.16, 2002-06-29:
477 Added new heuristics to grab command. Paths are analyzed to determine
478 move distance. Greater distances reduce the confidence in a move.
479 These rules help sort out grabs in a project where similar or
480 duplicate files are subject to parallel moves, the ambiguity being
481 resolved by favoring shorter moves. Word comparisons are case-insensitive
482 now. Common words (those that appear in many files) are ignored when
483 comparing files.
485 New options, --meta and --metaonly. This area of Meta-CVS is cleaned
486 up a little bit. Most reporting commands like log or diff no longer
487 operate on meta files by default; they must be explicitly told to do
488 so with --meta or --metaonly. Only the commit command implicitly includes
489 metafiles by default, and so if this is not wanted, --nometa must be
490 selected. The update command remains special; if it is given file
491 arguments, it does not include meta files. If given no arguments, it
492 does a global CVS up across the entire project.
494 Release 0.15, 2002-06-25:
496 Optimized a string splitting routine which is used heavily for processing
497 paths; the result is a noticeable performance improvement in some commands
498 that process large numbers of files.
500 Renamed ``import'' command to ``create''.
502 Bugfix: checkout and create showed errors when removing directory, due to
503 broken :postorder support in directory walking function.
505 Bugfix: on failure, checkout was failing to delete the MCVS directory when
506 the checkout was directed to an existing directory.
508 New feature: ``mcvs grab'' command imports third-party snapshots to a
509 branch. This is invoked in the root directory of the source tree to import.
510 It determines what files have been added and removed in the snapshot, and
511 tries to compute which removes and adds are actually moves. This is done by
512 analyzing the actual contents of the files according to a crude algorithm to
513 do fuzzy comparisons, so that even files which were modified as well as moved
514 are discovered.
516 Release 0.14, 2002-06-21:
518 Bugfix: mcvs add was broken for files that have no suffix, causing
519 the underlying cvs add to fail. This was broken in 0.7 when type
520 handling was added.
522 Release 0.13, 2002-06-06:
524 Sandbox synchronization now handles the case of two files having
525 the same timestamp. An error is signaled, with interactive resolution
526 to synchronize either way, or do nothing.
528 If a file must be deleted on update, and this cannot be done, it
529 is now a continuable error.
531 Bugfix: pass -I ! to cvs import so that it won't ignore some F- files
532 whose suffix is one of the ones cvs ignores by default.
534 New command: mcvs remap. The user can move or delete files directly without
535 going through Meta-CVS. When mcvs remap is invoked, it will hunt down the
536 moves and deletions, and reconstruct the mapping accordingly; that is,
537 it remaps the new structure. This command uses inode numbers to identify
538 files; if a file is copied and then the original is deleted, that won't
539 be recognized as a move.
541 Release 0.12, 2002-04-18:
543 Bugfix: remove was broken in 0.10, fixed now.
545 Bugfix: status, diff, etc. work in empty project rather than complaining
546 ``. not known to Meta-CVS''.
548 The checkout operation now can now populate an existing directory, including
549 the current working directory (mcvs co -d . modulename). Of course, the
550 target directory cannot be an existing Meta-CVS sandbox.
551 This is a useful feature, which allows sandboxes to blend with an
552 existing directory structure.
554 Checkout now uses the same function for generating the sandbox
555 structure as does update. This is now necessary, because local files
556 can be clobbered by the checkout.
558 Release 0.11, 2002-04-12:
560 Bugfix: when branch invokes rtag, it now takes the CVSROOT information
561 from CVS/Root and passes it via -d. This is necessary because rtag does not
562 look at a local CVS subdirectory for this information, only the
563 -d option or the environment variable.
565 Command for listing branches added (list-branches or lb). Also shows
566 what sticky tag the sandbox is updated to.
568 Command for switching branches added (switch or sw).
570 Merge detects that working copy is on non-branch tag and bails.
572 Absolute paths can now be specified as file arguments. These are
573 based from the root directory of the sandbox, not the actual filesystem root
574 directory.
576 Release 0.10, 2002-04-03:
578 Automatic merging implemented. Branch is created using branch command,
579 and merging from another branch is done using simple merge command.
580 Meta-CVS maintains the tags to keep track of what has been merged
581 from what branch to what branch.
583 Bugfix: checkout -d foo bar was complaining about directory bar already
584 existing, even though it should only care about foo.
586 The remove command now requires explicit -R option to recursively remove
587 a directory. It has more detailed error reporting.
589 The move command has better error reporting.
591 Release 0.9, 2002-03-14:
593 Bugfix: the .cvsignore file is now subject to tagging, status, etc,
594 (unless --nometa is specified, of course).
596 The mcvs filt command takes -r <revision> or -D <date> parameters.
597 This means to retrieve the MAP file as of the specified revision or
598 date and use that mapping to perform the filtering translation,
599 rather than using MAP-LOCAL.
601 The mcvs update command takes filename arguments now and also
602 supports the -p option.
604 Release 0.8, 2002-03-13:
606 Bug fixed in mcvs add; it was not ignoring files that are already
607 listed as :ignore in MCVS/TYPES.
609 Bug fixed in mcvs move: a target with a trailing slash is now treated
610 as a directory (if it does not already exist and is a non-directory).
612 The -d option of mcvs checkout can now be used to override the checkout
613 directory, which is normally the same as the module name.
615 The global options --version, --help, -q, -Q and -e are now supported.
617 New global options --error-continue and --error-terminate to disable
618 interactive error handling in two different ways.
620 Log level of many messages has changed; many messages have been
621 relegated to debug level.
623 The import command now creates a .cvsignore file containing the name
626 Release 0.7, 2002-03-09:
628 The import command collects a list of the file suffixes and brings up
629 a text editor to allow the user to edit their CVS keyword expansion
630 behavior. This information is kept in a new metafile called TYPES. The
631 add command also updates TYPES; it identifies any suffixes which are new,
632 and brings up an editor. The F- files now carry suffixes, which
633 simplifies interfacing with CVS, and also allows cvswrappers to work.
635 Recursive add works (mcvs add -R ...).
637 New command line option --nometa allows metafiles to be excluded from
638 diff, tag, and other commands; without the option they are inserted
639 into the list of files to be processed.
641 The commit option now takes an optional list of files or directories,
642 just like tag, diff, and others.
644 Release 0.6, 2002-02-16:
646 The add operation was horribly broken in 0.5, it is fixed.
648 User can interactively select whether to clobber local files or leave
649 everything alone. Effects on the mapping file of a mcvs move are undone,
650 if the restructuring is rolled back, or raises a condition that leads
651 to termination.
653 Meta-CVS now keeps a new meta-file called MCVS/TYPES. This is created
654 during import, and specifies the CVS keyword expansion mode for files
655 having given suffixes, and can also tell Meta-CVS to ignore certain files
656 when importing or adding.
658 Release 0.5, 2002-02-10:
660 Much improved error handling. Filesystem rearranging code performs
661 sanity checks to prevent adds and moves from accidentally clobbering
662 local files. A rearranging gone bad can be rolled back. Effects
663 of a failed mcvs add can also be rolled back.
665 MAP-LOCAL is now sorted in the same way as MAP.
667 Release 0.4, 2002-02-04:
669 CVS is invoked using internal function resembling the xargs utility,
670 which ensures that multiple command lines are generated if necessary to
671 avoid surpassing the operating system limit on argument and environment
672 vector size. This is important when someone wants to diff or stat a
673 subdirectory, which requires Meta-CVS to pick out the individual files
674 at the CVS level.
676 The tag, log, status and annotate commands are now available.
678 The MAP file is sorted on F- file names now, not path names. This
679 improves merging, since files do not move within the file when
680 they are renamed.
682 Release 0.3, 2002-02-02:
684 Process termination done is properly in top level handler, by a nonlocal
685 exit. The program properly indicates failed termination when it exits
686 due to an error condition.
688 Corrections are made in the command line option processing. If z is an
689 option that takes an argument, and the argument is -zx, then x is
690 treated as the argument to the option. Long options arguments are
691 recognized properly, according to the --opt=arg convention. The option
692 processing is restructured. Most of the commands now take the
693 appropriate cvs command-specific options.
695 The update algorithm performs dupe checking over the map, which could
696 happen during a merge.
698 Some more bugfixing has been done to the move command. It was still not
699 handling right some cases of an unversioned file being clobbered. Also,
700 it wasn't renaming a directory containing just one file.
702 I did some performance investigation for larger file sets, and
703 ended up rewriting the code that computes filesystem restructuring
704 changes and map duplicates.
706 Release 0.2, 2002-01-30:
708 Changed official name from MCVS to Meta-CVS. The move command now
709 performs some filesystem tests so it does the right thing when a versioned
710 file is moved over a non-versioned file, or when a file is moved into
711 a directory not known to Meta-CVS. Factored out reading and writing of
712 map files into functions.
714 Release 0.1, 2002-01-28:
716 Support for mcvs diff -u added. The -R option works for mcvs add command.
717 Bug fixed in mcvs mv command; it wasn't working analogously to the Unix
718 mv command when copying a directory to an existing directory.
720 Release 0.0, 2002-01-27:
722 This is alpha software. It is not complete, and lacks documentation.
723 However, it is already usable in its present state and is being used for
724 version control by its author. If you can program in Common Lisp and would
725 like to help, take a look through the TODO file. Send me patches, ideas,
726 feature requests.

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