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Contents of /meta-cvs/F-B3689DBB46386B16F4B2331934B69223

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Revision - (show annotations)
Tue Feb 3 11:49:12 2004 UTC (10 years, 2 months ago) by kaz
Branch: mcvs-1-0-branch
Changes since +4 -0 lines
* code/convert.lisp (mcvs-convert): Ensure that the converted
project has TYPES and .cvsignore files, not just a MAP, and that
these have all the branch and version tags.  This is important,
because users might end up independently adding these on branches
and end up with merge problems.
1 Release Notes for Meta-CVS
3 Release 1.0.13, 2004-02-??:
5 The ``mcvs convert'' command now creates the TYPES and .cvsignore files.
7 Release 1.0.12, 2004-01-31:
9 Fixes various bugs in ``mcvs convert'', so that it is
10 actually useable now, albeit still far from a perfect CVS
11 migration tool.
13 The remap command can now purge the MAP of entries that refer to non-existent
14 F- files, which is useful for cleaning up after the convert algorithm,
15 if necessary.
17 Release 1.0.11, 2004-01-28:
19 Fixes breakage of list-branches command introduced in last release.
21 Fixes failures in grab command when pulling new baseline over
22 partial sandbox. Renamed symlinks, and execute permissions of files
23 were being accessed using abstract instead of real path.
25 Release 1.0.10, 2004-01-09:
27 Builds on CLISP 2.32. The lb command no longer produces bogus warning
28 when working copy is sticky to a version tag.
30 Release 1.0.9, 2003-11-24:
32 Failures to open terminal for reasons other than non-existence
33 of the object are handled (e.g. ``no such device'', etc).
35 The --nometa option now works properly in those commands that
36 operate on the whole project when no file arguments are given
37 (tag, update, commit). Also, these commands no longer implicitly
38 include the meta files when file arguments *are* given.
39 These files can be included explicitly with the --meta global option.
41 Release 1.0.8, 2003-06-03:
43 The Cygwin /dev/tty problem is partially addressed. The program
44 won't fail if /dev does not exist, but emits a warning message,
45 and disables interactive error handling. The workaround is to use
46 ``mkdir /dev''. This is a CLISP issue; its OPEN function expects the
47 full path to a file to actually exist, but on Cygwin, there are fake
48 /dev/* paths even though /dev does not exist. If a real /dev directory
49 does in fact exist, it does not interfere with these magic paths.
51 The ``mcvs fi'' command no longer performs expansion on F- names
52 that are preceded by a slash.
54 Release 1.0.7, 2003-04-23:
56 New commands sync-to-cvs and sync-from-cvs expose the hard link
57 synchronization algorithm.
59 Revamped error recovery logic. To continue in an error situation now
60 consistently means ``take the bold action that may erase data''
61 or ``proceed in the most obvious way to finish the specified job''.
62 It never means ``roll back the operation and bail'', which was
63 confusing.
65 Termination is no longer unsafe; the `T' menu command, and the
66 equivalent --error-terminate global option perform all necessary
67 restoration and cleanup.
69 Errors that have more information to print, like a list of files or
70 whatever, now indicate it in a standard way which translates to the
71 `I' menu command.
73 Chatter output goes to standard error rather than standard output,
74 as do all error messages.
76 The interactive error menu now talks to the user using the controlling
77 tty, meaning that it will work even if the input or output of the
78 mcvs command are redirected. If no controlling tty is available,
79 then interactive error handling is disabled; the default behavior
80 is then like --error-terminate but can of course be overridden by
81 --error-continue.
83 Release 1.0.6, 2003-04-14:
85 The create command detects the existence of text editor backup files (or
86 other junk) in the MCVS directory after the editor is invoked on the
87 TYPES file. The user is prompted regarding their removal. If these files are
88 not removed, cvs import will bring them into the repository.
90 When Meta-CVS has to split a large CVS command into two or more
91 invocations with shorter argument lists, it now does not stop when one of
92 these invocations is unsuccessful; it does all of them, and combines
93 their termination indications by a logical AND. There was a bug in this
94 logic also which caused, upon termination failure, a cvs command to be
95 repeated for the same list of files.
97 Synchronization logic has been revamped. Unnecessary synchronizations
98 have been removed, which will make some commands run faster.
99 Synchronizations now have specific directions; for instance before
100 a CVS commit or update, changes are pushed from the directory tree to the MCVS
101 directory only, and after the CVS operation, in the reverse direction only.
103 Meta-CVS will no longer re-create missing F- files by linking from the
104 directory tree. Doing this causes two problems. One is that if a user
105 manually removes a F- file and do ``mcvs up'', she wants CVS to fetch a clean
106 copy and push it into the tree. She does not want the file to be restored
107 from the tree prior to the CVS update. Secondly, sometimes CVS itself
108 removes files. If we re-create the files, CVS will consider them to
109 be ``in the way''.
111 Failures to read from the MAP or MAP-LOCAL files are treated as interactive,
112 continuable errors. By continuing, the user agrees that the behavior will
113 be as if an empty map were read.
115 The grab command uses less memory for performing move analysis.
117 Release 1.0.5, 2003-02-25:
119 Bugfix: some one-argument command line options of CVS must be
120 specifies as a single parameter, with no separation between the
121 option letter and the argument characters. For example:
123 cvs log -r rev-1::rev-2 # invalid
124 cvs log -rrev1::rev2 # correct
126 Meta-CVS accepts either syntax, but it was generating the first form
127 when calling CVS. Now, *all* one-letter options that have an argument
128 are formatted in the second manner.
130 Bugfix: one more waitpid() issue was fixed; on fast machines, under
131 Linux, it was observed that from time to time Meta-CVS would get
132 a -1/ECHILD when waiting for the CVS process.
134 Release 1.0.4, 2003-02-20:
136 Fix remaining occurences of the CVS ``No child processes'' abort
137 problem, affecting the list-branches command, merge command
138 and the -r option of the filt command.
140 Release 1.0.3, 2003-02-12:
142 ! THIS RELEASE IS WITHDRAWN. It was accidentally created from the
143 ! experimental main trunk of the Meta-CVS codebase, rather than
144 ! the 1.0 branch. But 1.0.4 does contain all of the changes
145 ! described here.
147 Fix for the CVS ``No child processes'' abort problem. It turns out
148 that CLISP sets the signal handling action for the SIGCHLD signal
149 to SIG_IGN, which is inherited by child processes across the
150 fork() and execvp() calls used in our mcvs_spawn() function.
151 We correct the problem by resetting the signal handler to SIG_DFL
152 just before executing the new process image.
154 New feature, --up option. The argument is a nonnegative integer value
155 (default is zero) which specifies how many sandbox nesting levels to
156 escape out of when locating the sandbox root. This helps work with
157 nested Meta-CVS sandboxes.
159 Release 1.0.2, 2003-02-10:
161 Bugfix in waitpid logic in the C library for running external processes;
162 we were not dealing with an interrupted waitpid.
164 Behavior of mcvs tag is changed: when there are no filename arguments,
165 the whole tree is tagged including the metafiles. In other words, it
166 now works like the commit command.
168 Release 1.0.1, 2003-01-30:
170 Hard link sync optimization: update of a subset of files, commit, and
171 other operations like log and diff don't need to synchronize all
172 hard links, just the ones operated on.
174 The merge and remerge commands support -k option for overriding
175 CVS keyword expansion mode.
177 Fixes to getcwd error handling.
179 Improvement in install.sh script's logic for locating CLISP installation
180 directory.
182 Release 1.0, 2003-01-01:
184 NOTE: It's not possible to upgrade to this release via mcvs-upgrade,
185 because it adds some new C functions to the Lisp executable.
187 Security fix: read-time evaluation was not suppressed when reading
188 structured data, like MCVS/MAP and MCVS/TYPES. This means that it
189 was possible for Alice to check in something that would execute
190 arbitrary code on Bob's computer.
192 Optimization: use fork and exec to launch CVS rather than CLISP's
193 run-program function, which indirects through the shell interpreter.
194 (On Cygwin, the spawnvp function is used).
196 Performance fix: stat() was being called superfluously by the
197 hard synchronization code, twice for each file.
199 Build fix: install.sh works when CLISP executable is called ``lisp.exe'',
200 which is the case under Cygwin with newer CLISP releases.
202 Release 0.99, 2002-11-17:
204 New link command for creating symbolic links.
206 Global option -n (dry run---don't modify filesystem) is processed
207 internally now, not just passed to CVS.
209 Failure to invoke text editor is handled.
211 The -r option of filt is fixed; it has been broken since the change to the
212 new MAP format, because it was reading the raw map representation, not
213 passing it through the right conversion steps that are needed now.
215 Bugfix to purge and remap commands: they were fooled by CVS-generated
216 files in the MCVS/CVS directory. Specifically, files having F- names, and a
217 the suffix ,t.
219 Bugfix to add logic in directory restructuring: there was the possibility
220 of mistakingly taking a clobbered local file to be a new local version of
221 the added file, instead of replacing it. This could happen if the local
222 file had a future timestamp relative to the one coming from the repository.
224 The prop command does not synchronize or write out map if no options are
225 specified.
227 Help text added for move and branch commands. Help text for grab rewritten.
229 The CVSEDITOR and VISUAL environment variables are now checked, not
230 only EDITOR.
232 Release 0.98, 2002-10-13:
234 The prop command was mistakenly reading from MAP-LOCAL and writing to MAP,
235 which could cause information loss if the two differ. It now reads from MAP
236 and writes to MAP. (The property changes propagate to MAP-LOCAL by the
237 update operation invoked by prop, as before).
239 Invocation of external programs included in debug trace.
241 The filt command does not filter F- names if they are immediately preceded by
242 the MCVS/ prefix; such occurences are clearly concrete, sandbox-relative
243 references to the actual F- links, rather than abstract references.
245 The update command now supports the -C option, to fetch the repository
246 copy, throwing away local changes. It also now honors the --metaonly
247 and --nometa options.
249 The export command has been added, for checking out documents without creating
250 a working copy (no MCVS directory in the root of the checkout).
252 The watch command has been added. Note that its syntax differs from that
253 of CVS.
255 The watchers, editors, edit, and unedit commands have been added.
257 A script called mcvs-upgrade is now included, and installs alongside the mcvs
258 script. This allows the Meta-CVS Lisp image to recompile and patch itself,
259 giving users of binary distributions an easy way to upgrade from source
260 code.
262 Release 0.97, 2002-10-06:
264 Meta-CVS now builds and runs on Microsoft Windows, under Cygwin
265 (www.cygwin.com). It still relies on hard links, which requires
266 Windows 2000 or XP, and the NTFS filesystem. It probably won't
267 work over FAT.
269 New --debug option for verbose output.
271 Cleaned up of error messages. Error messages don't specify prefixes like
272 ``mcvs-add:'' or ``mcvs-grab:'' any more. Rather, the error handler adds the
273 ``mcvs:'' prefix when printing the messages in a situation when the error is
274 not continuable.
276 Fixed bug introduced in release 0.13: mcvs add -R was adding only
277 directories, effectively ignoring arguments that are regular files.
278 The error-continuation behavior of mcvs add has been revised.
280 Trying to rename an object onto itself, or to move the sandbox root
281 directory are no longer silent no-ops, but produce an error.
283 The remap command now preserves property lists, and picks up changes
284 in executable permission.
286 The grab command now notices when a file changes from having execute
287 permission to not having execute permission.
289 Operations on the path . now work in a partial sandbox.
291 Release 0.96, 2002-09-21:
293 The restore command was left broken during the change to the new
294 filemap format. It is now fixed.
296 The grab command now handles execute permission bits properly.
298 Some more commands have detailed help.
300 There is now a global option -i which specifies a script to be
301 executed. This allows Meta-CVS to be scripted using Lisp. For
302 instance suppose you have the following script and call it
303 list-matching:
305 #!/usr/local/bin/mcvs -i
306 (in-sandbox-root-dir
307 (let ((mapping (mapping-read *mcvs-map*))
308 (test-func (eval (read-from-string (pop *args*)))))
309 (dolist (entry mapping)
310 (with-slots (path raw-plist) entry
311 (when (funcall test-func raw-plist)
312 (format t "~a~%" path))))))
314 Then to list the names of files whose "importance" property is
315 a value greater than two, run:
317 ./list-matching '(lambda (plist)
318 (let ((imp (getf plist :importance)))
319 (and imp (> imp 2))))'
321 WARNING: Scripting accesses the guts of Meta-CVS directly, so scripts may
322 break as Meta-CVS is maintained. There is currently no published set of
323 stable interfaces.
325 Release 0.95, 2002-09-16:
327 The install.sh script no longer uses a borrowed copy of the clisp-link script
328 or the linkkit directory; these have been removed. These materials
329 are available at every CLISP installation; install.sh now finds them
330 and uses them. Users of non-x86 machines ran into problems because of this
331 because linkkit/clisp.h contains architecture-dependent information.
333 A bug in mcvs filt was fixed; it wasn't handling F- names that aren't found
334 in the map.
336 A more detailed help system now exists, though it's not complete. The ``mcvs
337 help'' command acts just like ``mcvs --help'' without any arguments. If given
338 an additional parameter which specifies a Meta-CVS command, it produces more
339 detailed documentation for that comand. Help exists already for a few
340 commands.
342 The release number is being warped to 0.95, which means that Meta-CVS is now
343 in beta. It is only five updates away from a 1.0 release.
345 Release 0.24, 2002-09-08:
347 The mapping entries for both symlinks and files have extensible property
348 lists now. These are stored in the optional fourth and fifth list elements,
349 respectively of the :FILE and :SYMLINK map entries.
351 Versioning of the execute permission of files is supported, represented as
352 the :EXEC property of a :FILE mapping entry.
354 Some lame syntax is provided for manipulating properties:
356 mcvs prop --set foo --clear bar --remove baz main.c list.c
358 will set the property FOO to true, set the property BAR to false,
359 and remove the property BAZ, in the files main.c and list.c.
360 The execute permission is represented by the property EXEC.
362 Release 0.23, 2002-09-02:
364 Bugfix: the grab command notices edited symlinks and incorporates the
365 changes into the mapping.
367 The grab command now figures out moved symlinks. Moved symlinks are those
368 whose pathname has changed, but which continue to point to the same object
369 (which may also have been moved).
371 Release 0.22, 2002-08-31:
373 Symbolic links are now versioned objects. The format of the MAP file
374 changes to accomodate this; the new Meta-CVS will read old MAP
375 files; when it writes it will write the new format. Old Meta-CVS won't
376 read the new format.
378 When a new module is created from an existing file tree, symbolic
379 links will be recognized and added. The add command will also add
380 symbolic links. Symbolic links can be renamed and moved; this does
381 nothing with their contents. They can point outside of the sandbox
382 using relative or absolute paths.
384 TODO:
386 There doesn't exist yet a special command to create symbolic links, nor to
387 retarget them; retargetting a link can be done manually by editing MCVS/MAP
388 and updating. Retargetting a link using the ln -s command, won't
389 backpropagate to the MAP file; an update will clobber the link.
391 The grab command does not yet compute symbolic link moves; a moved symbolic
392 link is treated as a remove and add. This will be easy to fix.
394 The remap command ignores symlinks.
396 Release 0.21, 2002-08-04:
398 Syntax of grab command changed. The branch is no longer specified as an
399 argument, but using the -r command option. If no revision is specified with
400 -r, then a -A must be specified to make the grab go to the main trunk. This
401 is a safety feature, since grabbing foreign snapshots to the trunk is almost
402 always wrong, though it could be useful during backup recovery, or for fixing
403 mistakes.
405 The way operating system functions are targetted has changed. Instead of
406 relying on the ``linuxlibc6'' module provided by CLISP, Meta-CVS now
407 has its own module for calling foreign functions. This module is portable;
408 it does not depend on the layout of glibc data structures. So Meta-CVS
409 is in theory now portable to other Unixes (provided they have /dev/urandom).
411 Release 0.20, 2002-07-27:
413 The commit command does a true global commit when given no file or directory
414 parameters, and not given the --metaonly option. This means commiting all
415 changes in the MCVS directory, even if they are in F-files that are not
416 currently mapped.
418 Release 0.19, 2002-07-16:
420 When moving multiple files or directories to a subdirectory, a
421 restart is now provided to skip over bad ones and continue.
423 Grab no longer scans files if there are only added files, or only removed
424 files. There are no moves to deduce in that case.
426 Restore properly creates lost+found at the root of a partial sandbox,
427 rather than at the abstract root of the module.
429 Some other algorithmic improvements made.
431 The first few sections of a user guide have been written.
433 Release 0.18, 2002-07-07:
435 Cool new feature: checkout takes an extra argument, which specifies a
436 subdirectory of the project. Specifying a subdirectory results in a ``partial
437 sandbox'', whose root directory is the specified subdirectory of the larger
438 project. The rest of the project is ``invisible'' to that sandbox. A
439 subdirectory argument can also be given to mcvs grab, which will cause it to
440 integrate the new source tree against a subtree of the Meta-CVS project
441 rather than the entire project. The subtree doesn't have to exist; in
442 that case you get an empty sandbox. Adding files to this sandbox will cause
443 the tree to exist in the project.
445 Bugfix: mcvs grab was not computing moves properly over small file sets,
446 wrongly treating them as removes and adds.
448 Release 0.17, 2002-07-02:
450 The create command no longer takes a vendor branch. Instead the symbol
451 ``Created-by-Meta-CVS'' is used as the vendor tag to satisfy CVS.
453 The grab command no longer does useless synchronization on files that
454 are about to be deleted.
456 New purge command; does ``cvs rm'' on deleted files, that is to say, F- files
457 that have no mapping.
459 New restore command; re-enters deleted files into the mapping, under
460 the ``lost+found'' directory, using their F- names as sandbox names.
462 Bugfix: when a checkout bails because it is requested over top of an existing
463 working copy, it must not delete that working copy's MCVS sub directory.
465 Release 0.16, 2002-06-29:
467 Added new heuristics to grab command. Paths are analyzed to determine
468 move distance. Greater distances reduce the confidence in a move.
469 These rules help sort out grabs in a project where similar or
470 duplicate files are subject to parallel moves, the ambiguity being
471 resolved by favoring shorter moves. Word comparisons are case-insensitive
472 now. Common words (those that appear in many files) are ignored when
473 comparing files.
475 New options, --meta and --metaonly. This area of Meta-CVS is cleaned
476 up a little bit. Most reporting commands like log or diff no longer
477 operate on meta files by default; they must be explicitly told to do
478 so with --meta or --metaonly. Only the commit command implicitly includes
479 metafiles by default, and so if this is not wanted, --nometa must be
480 selected. The update command remains special; if it is given file
481 arguments, it does not include meta files. If given no arguments, it
482 does a global CVS up across the entire project.
484 Release 0.15, 2002-06-25:
486 Optimized a string splitting routine which is used heavily for processing
487 paths; the result is a noticeable performance improvement in some commands
488 that process large numbers of files.
490 Renamed ``import'' command to ``create''.
492 Bugfix: checkout and create showed errors when removing directory, due to
493 broken :postorder support in directory walking function.
495 Bugfix: on failure, checkout was failing to delete the MCVS directory when
496 the checkout was directed to an existing directory.
498 New feature: ``mcvs grab'' command imports third-party snapshots to a
499 branch. This is invoked in the root directory of the source tree to import.
500 It determines what files have been added and removed in the snapshot, and
501 tries to compute which removes and adds are actually moves. This is done by
502 analyzing the actual contents of the files according to a crude algorithm to
503 do fuzzy comparisons, so that even files which were modified as well as moved
504 are discovered.
506 Release 0.14, 2002-06-21:
508 Bugfix: mcvs add was broken for files that have no suffix, causing
509 the underlying cvs add to fail. This was broken in 0.7 when type
510 handling was added.
512 Release 0.13, 2002-06-06:
514 Sandbox synchronization now handles the case of two files having
515 the same timestamp. An error is signaled, with interactive resolution
516 to synchronize either way, or do nothing.
518 If a file must be deleted on update, and this cannot be done, it
519 is now a continuable error.
521 Bugfix: pass -I ! to cvs import so that it won't ignore some F- files
522 whose suffix is one of the ones cvs ignores by default.
524 New command: mcvs remap. The user can move or delete files directly without
525 going through Meta-CVS. When mcvs remap is invoked, it will hunt down the
526 moves and deletions, and reconstruct the mapping accordingly; that is,
527 it remaps the new structure. This command uses inode numbers to identify
528 files; if a file is copied and then the original is deleted, that won't
529 be recognized as a move.
531 Release 0.12, 2002-04-18:
533 Bugfix: remove was broken in 0.10, fixed now.
535 Bugfix: status, diff, etc. work in empty project rather than complaining
536 ``. not known to Meta-CVS''.
538 The checkout operation now can now populate an existing directory, including
539 the current working directory (mcvs co -d . modulename). Of course, the
540 target directory cannot be an existing Meta-CVS sandbox.
541 This is a useful feature, which allows sandboxes to blend with an
542 existing directory structure.
544 Checkout now uses the same function for generating the sandbox
545 structure as does update. This is now necessary, because local files
546 can be clobbered by the checkout.
548 Release 0.11, 2002-04-12:
550 Bugfix: when branch invokes rtag, it now takes the CVSROOT information
551 from CVS/Root and passes it via -d. This is necessary because rtag does not
552 look at a local CVS subdirectory for this information, only the
553 -d option or the environment variable.
555 Command for listing branches added (list-branches or lb). Also shows
556 what sticky tag the sandbox is updated to.
558 Command for switching branches added (switch or sw).
560 Merge detects that working copy is on non-branch tag and bails.
562 Absolute paths can now be specified as file arguments. These are
563 based from the root directory of the sandbox, not the actual filesystem root
564 directory.
566 Release 0.10, 2002-04-03:
568 Automatic merging implemented. Branch is created using branch command,
569 and merging from another branch is done using simple merge command.
570 Meta-CVS maintains the tags to keep track of what has been merged
571 from what branch to what branch.
573 Bugfix: checkout -d foo bar was complaining about directory bar already
574 existing, even though it should only care about foo.
576 The remove command now requires explicit -R option to recursively remove
577 a directory. It has more detailed error reporting.
579 The move command has better error reporting.
581 Release 0.9, 2002-03-14:
583 Bugfix: the .cvsignore file is now subject to tagging, status, etc,
584 (unless --nometa is specified, of course).
586 The mcvs filt command takes -r <revision> or -D <date> parameters.
587 This means to retrieve the MAP file as of the specified revision or
588 date and use that mapping to perform the filtering translation,
589 rather than using MAP-LOCAL.
591 The mcvs update command takes filename arguments now and also
592 supports the -p option.
594 Release 0.8, 2002-03-13:
596 Bug fixed in mcvs add; it was not ignoring files that are already
597 listed as :ignore in MCVS/TYPES.
599 Bug fixed in mcvs move: a target with a trailing slash is now treated
600 as a directory (if it does not already exist and is a non-directory).
602 The -d option of mcvs checkout can now be used to override the checkout
603 directory, which is normally the same as the module name.
605 The global options --version, --help, -q, -Q and -e are now supported.
607 New global options --error-continue and --error-terminate to disable
608 interactive error handling in two different ways.
610 Log level of many messages has changed; many messages have been
611 relegated to debug level.
613 The import command now creates a .cvsignore file containing the name
616 Release 0.7, 2002-03-09:
618 The import command collects a list of the file suffixes and brings up
619 a text editor to allow the user to edit their CVS keyword expansion
620 behavior. This information is kept in a new metafile called TYPES. The
621 add command also updates TYPES; it identifies any suffixes which are new,
622 and brings up an editor. The F- files now carry suffixes, which
623 simplifies interfacing with CVS, and also allows cvswrappers to work.
625 Recursive add works (mcvs add -R ...).
627 New command line option --nometa allows metafiles to be excluded from
628 diff, tag, and other commands; without the option they are inserted
629 into the list of files to be processed.
631 The commit option now takes an optional list of files or directories,
632 just like tag, diff, and others.
634 Release 0.6, 2002-02-16:
636 The add operation was horribly broken in 0.5, it is fixed.
638 User can interactively select whether to clobber local files or leave
639 everything alone. Effects on the mapping file of a mcvs move are undone,
640 if the restructuring is rolled back, or raises a condition that leads
641 to termination.
643 Meta-CVS now keeps a new meta-file called MCVS/TYPES. This is created
644 during import, and specifies the CVS keyword expansion mode for files
645 having given suffixes, and can also tell Meta-CVS to ignore certain files
646 when importing or adding.
648 Release 0.5, 2002-02-10:
650 Much improved error handling. Filesystem rearranging code performs
651 sanity checks to prevent adds and moves from accidentally clobbering
652 local files. A rearranging gone bad can be rolled back. Effects
653 of a failed mcvs add can also be rolled back.
655 MAP-LOCAL is now sorted in the same way as MAP.
657 Release 0.4, 2002-02-04:
659 CVS is invoked using internal function resembling the xargs utility,
660 which ensures that multiple command lines are generated if necessary to
661 avoid surpassing the operating system limit on argument and environment
662 vector size. This is important when someone wants to diff or stat a
663 subdirectory, which requires Meta-CVS to pick out the individual files
664 at the CVS level.
666 The tag, log, status and annotate commands are now available.
668 The MAP file is sorted on F- file names now, not path names. This
669 improves merging, since files do not move within the file when
670 they are renamed.
672 Release 0.3, 2002-02-02:
674 Process termination done is properly in top level handler, by a nonlocal
675 exit. The program properly indicates failed termination when it exits
676 due to an error condition.
678 Corrections are made in the command line option processing. If z is an
679 option that takes an argument, and the argument is -zx, then x is
680 treated as the argument to the option. Long options arguments are
681 recognized properly, according to the --opt=arg convention. The option
682 processing is restructured. Most of the commands now take the
683 appropriate cvs command-specific options.
685 The update algorithm performs dupe checking over the map, which could
686 happen during a merge.
688 Some more bugfixing has been done to the move command. It was still not
689 handling right some cases of an unversioned file being clobbered. Also,
690 it wasn't renaming a directory containing just one file.
692 I did some performance investigation for larger file sets, and
693 ended up rewriting the code that computes filesystem restructuring
694 changes and map duplicates.
696 Release 0.2, 2002-01-30:
698 Changed official name from MCVS to Meta-CVS. The move command now
699 performs some filesystem tests so it does the right thing when a versioned
700 file is moved over a non-versioned file, or when a file is moved into
701 a directory not known to Meta-CVS. Factored out reading and writing of
702 map files into functions.
704 Release 0.1, 2002-01-28:
706 Support for mcvs diff -u added. The -R option works for mcvs add command.
707 Bug fixed in mcvs mv command; it wasn't working analogously to the Unix
708 mv command when copying a directory to an existing directory.
710 Release 0.0, 2002-01-27:
712 This is alpha software. It is not complete, and lacks documentation.
713 However, it is already usable in its present state and is being used for
714 version control by its author. If you can program in Common Lisp and would
715 like to help, take a look through the TODO file. Send me patches, ideas,
716 feature requests.

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