/[meta-cvs]/meta-cvs/F-B3689DBB46386B16F4B2331934B69223
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Revision 1.169 - (show annotations)
Wed Apr 16 05:12:21 2003 UTC (11 years ago) by kaz
Branch: MAIN
Changes since 1.168: +1 -1 lines
Merging from mcvs-1-0-branch.

New command, remote-filt.

* code/mcvs-main.lisp (*remote-filt-options*): New option constant.
(*mcvs-command-table*): Entries for new command added.
(*usage*): Help text added.

* code/filt.lisp (filt-select-map): New keyword parameter for
specifing repository module. CVS up -p or co -p command generated
accordingly. Also, little glitch fixed: the local case descends
into the MCVS directory, to avoid a warning message that occurs
when CVS is used in server mode.
(mcvs-filt-loop): New function, contains most of the old mcvs-filt
function body.
(mcvs-filt): Calls new mcvs-filt-loop to do actual filtering work.
(mcvs-remote-filt, mcvs-remote-filt-wrapper): New functions.

* code/clisp-unix.lisp (with-input-from-program): Macro changed
to include debug tracing of the invoked command.
1 Release for Meta-CVS
2
3 Release ?.??, 200?-??-??:
4
5 All Lisp symbols are in a package.
6
7 Release 1.0.6, 2003-04-14:
8
9 The create command detects the existence of text editor backup files (or
10 other junk) in the MCVS directory after the editor is invoked on the
11 TYPES file. The user is prompted regarding their removal. If these files are
12 not removed, cvs import will bring them into the repository.
13
14 When Meta-CVS has to split a large CVS command into two or more
15 invocations with shorter argument lists, it now does not stop when one of
16 these invocations is unsuccessful; it does all of them, and combines
17 their termination indications by a logical AND. There was a bug in this
18 logic also which caused, upon termination failure, a cvs command to be
19 repeated for the same list of files.
20
21 Synchronization logic has been revamped. Unnecessary synchronizations
22 have been removed, which will make some commands run faster.
23 Synchronizations now have specific directions; for instance before
24 a CVS commit or update, changes are pushed from the directory tree to the MCVS
25 directory only, and after the CVS operation, in the reverse direction only.
26
27 Meta-CVS will no longer re-create missing F- files by linking from the
28 directory tree. Doing this causes two problems. One is that if a user
29 manually removes a F- file and do ``mcvs up'', she wants CVS to fetch a clean
30 copy and push it into the tree. She does not want the file to be restored
31 from the tree prior to the CVS update. Secondly, sometimes CVS itself
32 removes files. If we re-create the files, CVS will consider them to
33 be ``in the way''.
34
35 Failures to read from the MAP or MAP-LOCAL files are treated as interactive,
36 continuable errors. By continuing, the user agrees that the behavior will
37 be as if an empty map were read.
38
39 The grab command uses less memory for performing move analysis.
40
41 Release 1.0.5, 2003-02-25:
42
43 Bugfix: some one-argument command line options of CVS must be
44 specifies as a single parameter, with no separation between the
45 option letter and the argument characters. For example:
46
47 cvs log -r rev-1::rev-2 # invalid
48 cvs log -rrev1::rev2 # correct
49
50 Meta-CVS accepts either syntax, but it was generating the first form
51 when calling CVS. Now, *all* one-letter options that have an argument
52 are formatted in the second manner.
53
54 Bugfix: one more waitpid() issue was fixed; on fast machines, under
55 Linux, it was observed that from time to time Meta-CVS would get
56 a -1/ECHILD when waiting for the CVS process.
57
58 Release 1.0.4, 2003-02-20:
59
60 Fix remaining occurences of the CVS ``No child processes'' abort
61 problem, affecting the list-branches command, merge command
62 and the -r option of the filt command.
63
64 Release 1.0.3, 2003-02-12:
65
66 ! THIS RELEASE IS WITHDRAWN. It was accidentally created from the
67 ! experimental main trunk of the Meta-CVS codebase, rather than
68 ! the 1.0 branch. But 1.0.4 does contain all of the changes
69 ! described here.
70
71 Fix for the CVS ``No child processes'' abort problem. It turns out
72 that CLISP sets the signal handling action for the SIGCHLD signal
73 to SIG_IGN, which is inherited by child processes across the
74 fork() and execvp() calls used in our mcvs_spawn() function.
75 We correct the problem by resetting the signal handler to SIG_DFL
76 just before executing the new process image.
77
78 New feature, --up option. The argument is a nonnegative integer value
79 (default is zero) which specifies how many sandbox nesting levels to
80 escape out of when locating the sandbox root. This helps work with
81 nested Meta-CVS sandboxes.
82
83 Release 1.0.2, 2003-02-10:
84
85 Bugfix in waitpid logic in the C library for running external processes;
86 we were not dealing with an interrupted waitpid.
87
88 Behavior of mcvs tag is changed: when there are no filename arguments,
89 the whole tree is tagged including the metafiles. In other words, it
90 now works like the commit command.
91
92 Release 1.0.1, 2003-01-30:
93
94 Hard link sync optimization: update of a subset of files, commit, and
95 other operations like log and diff don't need to synchronize all
96 hard links, just the ones operated on.
97
98 The merge and remerge commands support -k option for overriding
99 CVS keyword expansion mode.
100
101 Fixes to getcwd error handling.
102
103 Improvement in install.sh script's logic for locating CLISP installation
104 directory.
105
106 Release 1.0, 2003-01-01:
107
108 NOTE: It's not possible to upgrade to this release via mcvs-upgrade,
109 because it adds some new C functions to the Lisp executable.
110
111 Security fix: read-time evaluation was not suppressed when reading
112 structured data, like MCVS/MAP and MCVS/TYPES. This means that it
113 was possible for Alice to check in something that would execute
114 arbitrary code on Bob's computer.
115
116 Optimization: use fork and exec to launch CVS rather than CLISP's
117 run-program function, which indirects through the shell interpreter.
118 (On Cygwin, the spawnvp function is used).
119
120 Performance fix: stat() was being called superfluously by the
121 hard synchronization code, twice for each file.
122
123 Build fix: install.sh works when CLISP executable is called ``lisp.exe'',
124 which is the case under Cygwin with newer CLISP releases.
125
126 Release 0.99, 2002-11-17:
127
128 New link command for creating symbolic links.
129
130 Global option -n (dry run---don't modify filesystem) is processed
131 internally now, not just passed to CVS.
132
133 Failure to invoke text editor is handled.
134
135 The -r option of filt is fixed; it has been broken since the change to the
136 new MAP format, because it was reading the raw map representation, not
137 passing it through the right conversion steps that are needed now.
138
139 Bugfix to purge and remap commands: they were fooled by CVS-generated
140 files in the MCVS/CVS directory. Specifically, files having F- names, and a
141 the suffix ,t.
142
143 Bugfix to add logic in directory restructuring: there was the possibility
144 of mistakingly taking a clobbered local file to be a new local version of
145 the added file, instead of replacing it. This could happen if the local
146 file had a future timestamp relative to the one coming from the repository.
147
148 The prop command does not synchronize or write out map if no options are
149 specified.
150
151 Help text added for move and branch commands. Help text for grab rewritten.
152
153 The CVSEDITOR and VISUAL environment variables are now checked, not
154 only EDITOR.
155
156 Release 0.98, 2002-10-13:
157
158 The prop command was mistakenly reading from MAP-LOCAL and writing to MAP,
159 which could cause information loss if the two differ. It now reads from MAP
160 and writes to MAP. (The property changes propagate to MAP-LOCAL by the
161 update operation invoked by prop, as before).
162
163 Invocation of external programs included in debug trace.
164
165 The filt command does not filter F- names if they are immediately preceded by
166 the MCVS/ prefix; such occurences are clearly concrete, sandbox-relative
167 references to the actual F- links, rather than abstract references.
168
169 The update command now supports the -C option, to fetch the repository
170 copy, throwing away local changes. It also now honors the --metaonly
171 and --nometa options.
172
173 The export command has been added, for checking out documents without creating
174 a working copy (no MCVS directory in the root of the checkout).
175
176 The watch command has been added. Note that its syntax differs from that
177 of CVS.
178
179 The watchers, editors, edit, and unedit commands have been added.
180
181 A script called mcvs-upgrade is now included, and installs alongside the mcvs
182 script. This allows the Meta-CVS Lisp image to recompile and patch itself,
183 giving users of binary distributions an easy way to upgrade from source
184 code.
185
186 Release 0.97, 2002-10-06:
187
188 Meta-CVS now builds and runs on Microsoft Windows, under Cygwin
189 (www.cygwin.com). It still relies on hard links, which requires
190 Windows 2000 or XP, and the NTFS filesystem. It probably won't
191 work over FAT.
192
193 New --debug option for verbose output.
194
195 Cleaned up of error messages. Error messages don't specify prefixes like
196 ``mcvs-add:'' or ``mcvs-grab:'' any more. Rather, the error handler adds the
197 ``mcvs:'' prefix when printing the messages in a situation when the error is
198 not continuable.
199
200 Fixed bug introduced in release 0.13: mcvs add -R was adding only
201 directories, effectively ignoring arguments that are regular files.
202 The error-continuation behavior of mcvs add has been revised.
203
204 Trying to rename an object onto itself, or to move the sandbox root
205 directory are no longer silent no-ops, but produce an error.
206
207 The remap command now preserves property lists, and picks up changes
208 in executable permission.
209
210 The grab command now notices when a file changes from having execute
211 permission to not having execute permission.
212
213 Operations on the path . now work in a partial sandbox.
214
215 Release 0.96, 2002-09-21:
216
217 The restore command was left broken during the change to the new
218 filemap format. It is now fixed.
219
220 The grab command now handles execute permission bits properly.
221
222 Some more commands have detailed help.
223
224 There is now a global option -i which specifies a script to be
225 executed. This allows Meta-CVS to be scripted using Lisp. For
226 instance suppose you have the following script and call it
227 list-matching:
228
229 #!/usr/local/bin/mcvs -i
230 (in-sandbox-root-dir
231 (let ((mapping (mapping-read *mcvs-map*))
232 (test-func (eval (read-from-string (pop *args*)))))
233 (dolist (entry mapping)
234 (with-slots (path raw-plist) entry
235 (when (funcall test-func raw-plist)
236 (format t "~a~%" path))))))
237
238 Then to list the names of files whose "importance" property is
239 a value greater than two, run:
240
241 ./list-matching '(lambda (plist)
242 (let ((imp (getf plist :importance)))
243 (and imp (> imp 2))))'
244
245 WARNING: Scripting accesses the guts of Meta-CVS directly, so scripts may
246 break as Meta-CVS is maintained. There is currently no published set of
247 stable interfaces.
248
249 Release 0.95, 2002-09-16:
250
251 The install.sh script no longer uses a borrowed copy of the clisp-link script
252 or the linkkit directory; these have been removed. These materials
253 are available at every CLISP installation; install.sh now finds them
254 and uses them. Users of non-x86 machines ran into problems because of this
255 because linkkit/clisp.h contains architecture-dependent information.
256
257 A bug in mcvs filt was fixed; it wasn't handling F- names that aren't found
258 in the map.
259
260 A more detailed help system now exists, though it's not complete. The ``mcvs
261 help'' command acts just like ``mcvs --help'' without any arguments. If given
262 an additional parameter which specifies a Meta-CVS command, it produces more
263 detailed documentation for that comand. Help exists already for a few
264 commands.
265
266 The release number is being warped to 0.95, which means that Meta-CVS is now
267 in beta. It is only five updates away from a 1.0 release.
268
269 Release 0.24, 2002-09-08:
270
271 The mapping entries for both symlinks and files have extensible property
272 lists now. These are stored in the optional fourth and fifth list elements,
273 respectively of the :FILE and :SYMLINK map entries.
274
275 Versioning of the execute permission of files is supported, represented as
276 the :EXEC property of a :FILE mapping entry.
277
278 Some lame syntax is provided for manipulating properties:
279
280 mcvs prop --set foo --clear bar --remove baz main.c list.c
281
282 will set the property FOO to true, set the property BAR to false,
283 and remove the property BAZ, in the files main.c and list.c.
284 The execute permission is represented by the property EXEC.
285
286 Release 0.23, 2002-09-02:
287
288 Bugfix: the grab command notices edited symlinks and incorporates the
289 changes into the mapping.
290
291 The grab command now figures out moved symlinks. Moved symlinks are those
292 whose pathname has changed, but which continue to point to the same object
293 (which may also have been moved).
294
295 Release 0.22, 2002-08-31:
296
297 Symbolic links are now versioned objects. The format of the MAP file
298 changes to accomodate this; the new Meta-CVS will read old MAP
299 files; when it writes it will write the new format. Old Meta-CVS won't
300 read the new format.
301
302 When a new module is created from an existing file tree, symbolic
303 links will be recognized and added. The add command will also add
304 symbolic links. Symbolic links can be renamed and moved; this does
305 nothing with their contents. They can point outside of the sandbox
306 using relative or absolute paths.
307
308 TODO:
309
310 There doesn't exist yet a special command to create symbolic links, nor to
311 retarget them; retargetting a link can be done manually by editing MCVS/MAP
312 and updating. Retargetting a link using the ln -s command, won't
313 backpropagate to the MAP file; an update will clobber the link.
314
315 The grab command does not yet compute symbolic link moves; a moved symbolic
316 link is treated as a remove and add. This will be easy to fix.
317
318 The remap command ignores symlinks.
319
320 Release 0.21, 2002-08-04:
321
322 Syntax of grab command changed. The branch is no longer specified as an
323 argument, but using the -r command option. If no revision is specified with
324 -r, then a -A must be specified to make the grab go to the main trunk. This
325 is a safety feature, since grabbing foreign snapshots to the trunk is almost
326 always wrong, though it could be useful during backup recovery, or for fixing
327 mistakes.
328
329 The way operating system functions are targetted has changed. Instead of
330 relying on the ``linuxlibc6'' module provided by CLISP, Meta-CVS now
331 has its own module for calling foreign functions. This module is portable;
332 it does not depend on the layout of glibc data structures. So Meta-CVS
333 is in theory now portable to other Unixes (provided they have /dev/urandom).
334
335 Release 0.20, 2002-07-27:
336
337 The commit command does a true global commit when given no file or directory
338 parameters, and not given the --metaonly option. This means commiting all
339 changes in the MCVS directory, even if they are in F-files that are not
340 currently mapped.
341
342 Release 0.19, 2002-07-16:
343
344 When moving multiple files or directories to a subdirectory, a
345 restart is now provided to skip over bad ones and continue.
346
347 Grab no longer scans files if there are only added files, or only removed
348 files. There are no moves to deduce in that case.
349
350 Restore properly creates lost+found at the root of a partial sandbox,
351 rather than at the abstract root of the module.
352
353 Some other algorithmic improvements made.
354
355 The first few sections of a user guide have been written.
356
357 Release 0.18, 2002-07-07:
358
359 Cool new feature: checkout takes an extra argument, which specifies a
360 subdirectory of the project. Specifying a subdirectory results in a ``partial
361 sandbox'', whose root directory is the specified subdirectory of the larger
362 project. The rest of the project is ``invisible'' to that sandbox. A
363 subdirectory argument can also be given to mcvs grab, which will cause it to
364 integrate the new source tree against a subtree of the Meta-CVS project
365 rather than the entire project. The subtree doesn't have to exist; in
366 that case you get an empty sandbox. Adding files to this sandbox will cause
367 the tree to exist in the project.
368
369 Bugfix: mcvs grab was not computing moves properly over small file sets,
370 wrongly treating them as removes and adds.
371
372 Release 0.17, 2002-07-02:
373
374 The create command no longer takes a vendor branch. Instead the symbol
375 ``Created-by-Meta-CVS'' is used as the vendor tag to satisfy CVS.
376
377 The grab command no longer does useless synchronization on files that
378 are about to be deleted.
379
380 New purge command; does ``cvs rm'' on deleted files, that is to say, F- files
381 that have no mapping.
382
383 New restore command; re-enters deleted files into the mapping, under
384 the ``lost+found'' directory, using their F- names as sandbox names.
385
386 Bugfix: when a checkout bails because it is requested over top of an existing
387 working copy, it must not delete that working copy's MCVS sub directory.
388
389 Release 0.16, 2002-06-29:
390
391 Added new heuristics to grab command. Paths are analyzed to determine
392 move distance. Greater distances reduce the confidence in a move.
393 These rules help sort out grabs in a project where similar or
394 duplicate files are subject to parallel moves, the ambiguity being
395 resolved by favoring shorter moves. Word comparisons are case-insensitive
396 now. Common words (those that appear in many files) are ignored when
397 comparing files.
398
399 New options, --meta and --metaonly. This area of Meta-CVS is cleaned
400 up a little bit. Most reporting commands like log or diff no longer
401 operate on meta files by default; they must be explicitly told to do
402 so with --meta or --metaonly. Only the commit command implicitly includes
403 metafiles by default, and so if this is not wanted, --nometa must be
404 selected. The update command remains special; if it is given file
405 arguments, it does not include meta files. If given no arguments, it
406 does a global CVS up across the entire project.
407
408 Release 0.15, 2002-06-25:
409
410 Optimized a string splitting routine which is used heavily for processing
411 paths; the result is a noticeable performance improvement in some commands
412 that process large numbers of files.
413
414 Renamed ``import'' command to ``create''.
415
416 Bugfix: checkout and create showed errors when removing directory, due to
417 broken :postorder support in directory walking function.
418
419 Bugfix: on failure, checkout was failing to delete the MCVS directory when
420 the checkout was directed to an existing directory.
421
422 New feature: ``mcvs grab'' command imports third-party snapshots to a
423 branch. This is invoked in the root directory of the source tree to import.
424 It determines what files have been added and removed in the snapshot, and
425 tries to compute which removes and adds are actually moves. This is done by
426 analyzing the actual contents of the files according to a crude algorithm to
427 do fuzzy comparisons, so that even files which were modified as well as moved
428 are discovered.
429
430 Release 0.14, 2002-06-21:
431
432 Bugfix: mcvs add was broken for files that have no suffix, causing
433 the underlying cvs add to fail. This was broken in 0.7 when type
434 handling was added.
435
436 Release 0.13, 2002-06-06:
437
438 Sandbox synchronization now handles the case of two files having
439 the same timestamp. An error is signaled, with interactive resolution
440 to synchronize either way, or do nothing.
441
442 If a file must be deleted on update, and this cannot be done, it
443 is now a continuable error.
444
445 Bugfix: pass -I ! to cvs import so that it won't ignore some F- files
446 whose suffix is one of the ones cvs ignores by default.
447
448 New command: mcvs remap. The user can move or delete files directly without
449 going through Meta-CVS. When mcvs remap is invoked, it will hunt down the
450 moves and deletions, and reconstruct the mapping accordingly; that is,
451 it remaps the new structure. This command uses inode numbers to identify
452 files; if a file is copied and then the original is deleted, that won't
453 be recognized as a move.
454
455 Release 0.12, 2002-04-18:
456
457 Bugfix: remove was broken in 0.10, fixed now.
458
459 Bugfix: status, diff, etc. work in empty project rather than complaining
460 ``. not known to Meta-CVS''.
461
462 The checkout operation now can now populate an existing directory, including
463 the current working directory (mcvs co -d . modulename). Of course, the
464 target directory cannot be an existing Meta-CVS sandbox.
465 This is a useful feature, which allows sandboxes to blend with an
466 existing directory structure.
467
468 Checkout now uses the same function for generating the sandbox
469 structure as does update. This is now necessary, because local files
470 can be clobbered by the checkout.
471
472 Release 0.11, 2002-04-12:
473
474 Bugfix: when branch invokes rtag, it now takes the CVSROOT information
475 from CVS/Root and passes it via -d. This is necessary because rtag does not
476 look at a local CVS subdirectory for this information, only the
477 -d option or the environment variable.
478
479 Command for listing branches added (list-branches or lb). Also shows
480 what sticky tag the sandbox is updated to.
481
482 Command for switching branches added (switch or sw).
483
484 Merge detects that working copy is on non-branch tag and bails.
485
486 Absolute paths can now be specified as file arguments. These are
487 based from the root directory of the sandbox, not the actual filesystem root
488 directory.
489
490 Release 0.10, 2002-04-03:
491
492 Automatic merging implemented. Branch is created using branch command,
493 and merging from another branch is done using simple merge command.
494 Meta-CVS maintains the tags to keep track of what has been merged
495 from what branch to what branch.
496
497 Bugfix: checkout -d foo bar was complaining about directory bar already
498 existing, even though it should only care about foo.
499
500 The remove command now requires explicit -R option to recursively remove
501 a directory. It has more detailed error reporting.
502
503 The move command has better error reporting.
504
505 Release 0.9, 2002-03-14:
506
507 Bugfix: the .cvsignore file is now subject to tagging, status, etc,
508 (unless --nometa is specified, of course).
509
510 The mcvs filt command takes -r <revision> or -D <date> parameters.
511 This means to retrieve the MAP file as of the specified revision or
512 date and use that mapping to perform the filtering translation,
513 rather than using MAP-LOCAL.
514
515 The mcvs update command takes filename arguments now and also
516 supports the -p option.
517
518 Release 0.8, 2002-03-13:
519
520 Bug fixed in mcvs add; it was not ignoring files that are already
521 listed as :ignore in MCVS/TYPES.
522
523 Bug fixed in mcvs move: a target with a trailing slash is now treated
524 as a directory (if it does not already exist and is a non-directory).
525
526 The -d option of mcvs checkout can now be used to override the checkout
527 directory, which is normally the same as the module name.
528
529 The global options --version, --help, -q, -Q and -e are now supported.
530
531 New global options --error-continue and --error-terminate to disable
532 interactive error handling in two different ways.
533
534 Log level of many messages has changed; many messages have been
535 relegated to debug level.
536
537 The import command now creates a .cvsignore file containing the name
538 MAP-LOCAL.
539
540 Release 0.7, 2002-03-09:
541
542 The import command collects a list of the file suffixes and brings up
543 a text editor to allow the user to edit their CVS keyword expansion
544 behavior. This information is kept in a new metafile called TYPES. The
545 add command also updates TYPES; it identifies any suffixes which are new,
546 and brings up an editor. The F- files now carry suffixes, which
547 simplifies interfacing with CVS, and also allows cvswrappers to work.
548
549 Recursive add works (mcvs add -R ...).
550
551 New command line option --nometa allows metafiles to be excluded from
552 diff, tag, and other commands; without the option they are inserted
553 into the list of files to be processed.
554
555 The commit option now takes an optional list of files or directories,
556 just like tag, diff, and others.
557
558 Release 0.6, 2002-02-16:
559
560 The add operation was horribly broken in 0.5, it is fixed.
561
562 User can interactively select whether to clobber local files or leave
563 everything alone. Effects on the mapping file of a mcvs move are undone,
564 if the restructuring is rolled back, or raises a condition that leads
565 to termination.
566
567 Meta-CVS now keeps a new meta-file called MCVS/TYPES. This is created
568 during import, and specifies the CVS keyword expansion mode for files
569 having given suffixes, and can also tell Meta-CVS to ignore certain files
570 when importing or adding.
571
572 Release 0.5, 2002-02-10:
573
574 Much improved error handling. Filesystem rearranging code performs
575 sanity checks to prevent adds and moves from accidentally clobbering
576 local files. A rearranging gone bad can be rolled back. Effects
577 of a failed mcvs add can also be rolled back.
578
579 MAP-LOCAL is now sorted in the same way as MAP.
580
581 Release 0.4, 2002-02-04:
582
583 CVS is invoked using internal function resembling the xargs utility,
584 which ensures that multiple command lines are generated if necessary to
585 avoid surpassing the operating system limit on argument and environment
586 vector size. This is important when someone wants to diff or stat a
587 subdirectory, which requires Meta-CVS to pick out the individual files
588 at the CVS level.
589
590 The tag, log, status and annotate commands are now available.
591
592 The MAP file is sorted on F- file names now, not path names. This
593 improves merging, since files do not move within the file when
594 they are renamed.
595
596 Release 0.3, 2002-02-02:
597
598 Process termination done is properly in top level handler, by a nonlocal
599 exit. The program properly indicates failed termination when it exits
600 due to an error condition.
601
602 Corrections are made in the command line option processing. If z is an
603 option that takes an argument, and the argument is -zx, then x is
604 treated as the argument to the option. Long options arguments are
605 recognized properly, according to the --opt=arg convention. The option
606 processing is restructured. Most of the commands now take the
607 appropriate cvs command-specific options.
608
609 The update algorithm performs dupe checking over the map, which could
610 happen during a merge.
611
612 Some more bugfixing has been done to the move command. It was still not
613 handling right some cases of an unversioned file being clobbered. Also,
614 it wasn't renaming a directory containing just one file.
615
616 I did some performance investigation for larger file sets, and
617 ended up rewriting the code that computes filesystem restructuring
618 changes and map duplicates.
619
620 Release 0.2, 2002-01-30:
621
622 Changed official name from MCVS to Meta-CVS. The move command now
623 performs some filesystem tests so it does the right thing when a versioned
624 file is moved over a non-versioned file, or when a file is moved into
625 a directory not known to Meta-CVS. Factored out reading and writing of
626 map files into functions.
627
628 Release 0.1, 2002-01-28:
629
630 Support for mcvs diff -u added. The -R option works for mcvs add command.
631 Bug fixed in mcvs mv command; it wasn't working analogously to the Unix
632 mv command when copying a directory to an existing directory.
633
634 Release 0.0, 2002-01-27:
635
636 This is alpha software. It is not complete, and lacks documentation.
637 However, it is already usable in its present state and is being used for
638 version control by its author. If you can program in Common Lisp and would
639 like to help, take a look through the TODO file. Send me patches, ideas,
640 feature requests.

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