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Revision 1.196 - (show annotations)
Mon Mar 10 00:19:32 2008 UTC (6 years, 1 month ago) by kaz
Branch: MAIN
CVS Tags: HEAD
Changes since 1.195: +4 -0 lines
Get rid of dependency on lndir.

* configure: Do not check for lndir; do not symlink code
directory (just the Makefile using ln).

* Makefile: Use top_srcdir variable to refer to code.
1 Release Notes for Meta-CVS
2
3 Release 1.1.99, 2008-0?-??:
4
5 Build doesn't require lndir tool.
6
7 Release 1.1.98, 2008-03-07:
8
9 Support for old CLISP versions is dropped. The oldest CLISP version that
10 this release has been tested with is 2.38.
11
12 Support for POSIX as a general platform is dropped. Instead, specific
13 operating system implementations are targetted directly, directly using
14 entry points into their shared libraries. This is not only more efficient,
15 but makes Meta-CVS easier to install. No C compiling and linking of a
16 custom CLISP image is required. The only operating systems supported in
17 this release are Linux (glibc 2.3 or newer) and Cygwin (1.5.22-1 or newer).
18
19 The mcvs-upgrade script is gone.
20
21 A mcvs-debug command is now installed along with mcvs. This is just like
22 mcvs, but not compiled. If mcvs breaks, reproducing the problem using
23 mcvs-debug can be helpful.
24
25 A small bugfix was done to "mcvs filt", as well as a minor enhancement.
26 When CVS reports that a backup file was created having a name such as
27 1.1.#F-1ADF...391, the filter recognizes this .# prefix in front of the
28 F- and will not perform the substitution. Previously, the substitution
29 was performed, resulting in a misleading output from the filter, suggesting
30 that a backup copy of a file was created under the actual name.
31
32 It is now no longer necessary to pipe the output of mcvs through mcvs fi.
33 It is done automatically for most of the commands where doing so makes sense.
34 The filtering is done in a forked child process, but without exec'ing a new
35 process image, and it is only done around calls to cvs. It can be turned
36 off with a new global option --nofilt.
37
38 There was an issue building Meta-CVS with CLISP patch revisions that have a
39 third version number, for example "2.32.1". This was fixed in July 2004,
40 but never released. The fix doesn't exist any longer, since the CLISP
41 version check, and the code which depended on it, is completely gone.
42
43 New -x global option feature: takes an argument which is parsed as
44 a Lisp expression (in the MCVS package) and evaluated.
45
46 The -i option may appear more than once.
47
48 Release 1.1.0, 2004-03-12:
49
50 All Lisp symbols are in a package. Compiling and loading is simplified,
51 and more portable.
52
53 Release 1.0.13, 2004-03-12:
54
55 The ``mcvs convert'' command now creates the TYPES and .cvsignore files.
56
57 Release 1.0.12, 2004-01-31:
58
59 Fixes various bugs in ``mcvs convert'', so that it is
60 actually useable now, albeit still far from a perfect CVS
61 migration tool.
62
63 The remap command can now purge the MAP of entries that refer to non-existent
64 F- files, which is useful for cleaning up after the convert algorithm,
65 if necessary.
66
67 Release 1.0.11, 2004-01-28:
68
69 Fixes breakage of list-branches command introduced in last release.
70
71 Fixes failures in grab command when pulling new baseline over
72 partial sandbox. Renamed symlinks, and execute permissions of files
73 were being accessed using abstract instead of real path.
74
75 Release 1.0.10, 2004-01-09:
76
77 Builds on CLISP 2.32. The lb command no longer produces bogus warning
78 when working copy is sticky to a version tag.
79
80 Release 1.0.9, 2003-11-24:
81
82 Failures to open terminal for reasons other than non-existence
83 of the object are handled (e.g. ``no such device'', etc).
84
85 The --nometa option now works properly in those commands that
86 operate on the whole project when no file arguments are given
87 (tag, update, commit). Also, these commands no longer implicitly
88 include the meta files when file arguments *are* given.
89 These files can be included explicitly with the --meta global option.
90
91 Release 1.0.8, 2003-06-03:
92
93 The Cygwin /dev/tty problem is partially addressed. The program
94 won't fail if /dev does not exist, but emits a warning message,
95 and disables interactive error handling. The workaround is to use
96 ``mkdir /dev''. This is a CLISP issue; its OPEN function expects the
97 full path to a file to actually exist, but on Cygwin, there are fake
98 /dev/* paths even though /dev does not exist. If a real /dev directory
99 does in fact exist, it does not interfere with these magic paths.
100
101 The ``mcvs fi'' command no longer performs expansion on F- names
102 that are preceded by a slash.
103
104 Release 1.0.7, 2003-04-23:
105
106 New commands sync-to-cvs and sync-from-cvs expose the hard link
107 synchronization algorithm.
108
109 Revamped error recovery logic. To continue in an error situation now
110 consistently means ``take the bold action that may erase data''
111 or ``proceed in the most obvious way to finish the specified job''.
112 It never means ``roll back the operation and bail'', which was
113 confusing.
114
115 Termination is no longer unsafe; the `T' menu command, and the
116 equivalent --error-terminate global option perform all necessary
117 restoration and cleanup.
118
119 Errors that have more information to print, like a list of files or
120 whatever, now indicate it in a standard way which translates to the
121 `I' menu command.
122
123 Chatter output goes to standard error rather than standard output,
124 as do all error messages.
125
126 The interactive error menu now talks to the user using the controlling
127 tty, meaning that it will work even if the input or output of the
128 mcvs command are redirected. If no controlling tty is available,
129 then interactive error handling is disabled; the default behavior
130 is then like --error-terminate but can of course be overridden by
131 --error-continue.
132
133 Release 1.0.6, 2003-04-14:
134
135 The create command detects the existence of text editor backup files (or
136 other junk) in the MCVS directory after the editor is invoked on the
137 TYPES file. The user is prompted regarding their removal. If these files are
138 not removed, cvs import will bring them into the repository.
139
140 When Meta-CVS has to split a large CVS command into two or more
141 invocations with shorter argument lists, it now does not stop when one of
142 these invocations is unsuccessful; it does all of them, and combines
143 their termination indications by a logical AND. There was a bug in this
144 logic also which caused, upon termination failure, a cvs command to be
145 repeated for the same list of files.
146
147 Synchronization logic has been revamped. Unnecessary synchronizations
148 have been removed, which will make some commands run faster.
149 Synchronizations now have specific directions; for instance before
150 a CVS commit or update, changes are pushed from the directory tree to the MCVS
151 directory only, and after the CVS operation, in the reverse direction only.
152
153 Meta-CVS will no longer re-create missing F- files by linking from the
154 directory tree. Doing this causes two problems. One is that if a user
155 manually removes a F- file and do ``mcvs up'', she wants CVS to fetch a clean
156 copy and push it into the tree. She does not want the file to be restored
157 from the tree prior to the CVS update. Secondly, sometimes CVS itself
158 removes files. If we re-create the files, CVS will consider them to
159 be ``in the way''.
160
161 Failures to read from the MAP or MAP-LOCAL files are treated as interactive,
162 continuable errors. By continuing, the user agrees that the behavior will
163 be as if an empty map were read.
164
165 The grab command uses less memory for performing move analysis.
166
167 Release 1.0.5, 2003-02-25:
168
169 Bugfix: some one-argument command line options of CVS must be
170 specifies as a single parameter, with no separation between the
171 option letter and the argument characters. For example:
172
173 cvs log -r rev-1::rev-2 # invalid
174 cvs log -rrev1::rev2 # correct
175
176 Meta-CVS accepts either syntax, but it was generating the first form
177 when calling CVS. Now, *all* one-letter options that have an argument
178 are formatted in the second manner.
179
180 Bugfix: one more waitpid() issue was fixed; on fast machines, under
181 Linux, it was observed that from time to time Meta-CVS would get
182 a -1/ECHILD when waiting for the CVS process.
183
184 Release 1.0.4, 2003-02-20:
185
186 Fix remaining occurences of the CVS ``No child processes'' abort
187 problem, affecting the list-branches command, merge command
188 and the -r option of the filt command.
189
190 Release 1.0.3, 2003-02-12:
191
192 ! THIS RELEASE IS WITHDRAWN. It was accidentally created from the
193 ! experimental main trunk of the Meta-CVS codebase, rather than
194 ! the 1.0 branch. But 1.0.4 does contain all of the changes
195 ! described here.
196
197 Fix for the CVS ``No child processes'' abort problem. It turns out
198 that CLISP sets the signal handling action for the SIGCHLD signal
199 to SIG_IGN, which is inherited by child processes across the
200 fork() and execvp() calls used in our mcvs_spawn() function.
201 We correct the problem by resetting the signal handler to SIG_DFL
202 just before executing the new process image.
203
204 New feature, --up option. The argument is a nonnegative integer value
205 (default is zero) which specifies how many sandbox nesting levels to
206 escape out of when locating the sandbox root. This helps work with
207 nested Meta-CVS sandboxes.
208
209 Release 1.0.2, 2003-02-10:
210
211 Bugfix in waitpid logic in the C library for running external processes;
212 we were not dealing with an interrupted waitpid.
213
214 Behavior of mcvs tag is changed: when there are no filename arguments,
215 the whole tree is tagged including the metafiles. In other words, it
216 now works like the commit command.
217
218 Release 1.0.1, 2003-01-30:
219
220 Hard link sync optimization: update of a subset of files, commit, and
221 other operations like log and diff don't need to synchronize all
222 hard links, just the ones operated on.
223
224 The merge and remerge commands support -k option for overriding
225 CVS keyword expansion mode.
226
227 Fixes to getcwd error handling.
228
229 Improvement in install.sh script's logic for locating CLISP installation
230 directory.
231
232 Release 1.0, 2003-01-01:
233
234 NOTE: It's not possible to upgrade to this release via mcvs-upgrade,
235 because it adds some new C functions to the Lisp executable.
236
237 Security fix: read-time evaluation was not suppressed when reading
238 structured data, like MCVS/MAP and MCVS/TYPES. This means that it
239 was possible for Alice to check in something that would execute
240 arbitrary code on Bob's computer.
241
242 Optimization: use fork and exec to launch CVS rather than CLISP's
243 run-program function, which indirects through the shell interpreter.
244 (On Cygwin, the spawnvp function is used).
245
246 Performance fix: stat() was being called superfluously by the
247 hard synchronization code, twice for each file.
248
249 Build fix: install.sh works when CLISP executable is called ``lisp.exe'',
250 which is the case under Cygwin with newer CLISP releases.
251
252 Release 0.99, 2002-11-17:
253
254 New link command for creating symbolic links.
255
256 Global option -n (dry run---don't modify filesystem) is processed
257 internally now, not just passed to CVS.
258
259 Failure to invoke text editor is handled.
260
261 The -r option of filt is fixed; it has been broken since the change to the
262 new MAP format, because it was reading the raw map representation, not
263 passing it through the right conversion steps that are needed now.
264
265 Bugfix to purge and remap commands: they were fooled by CVS-generated
266 files in the MCVS/CVS directory. Specifically, files having F- names, and a
267 the suffix ,t.
268
269 Bugfix to add logic in directory restructuring: there was the possibility
270 of mistakingly taking a clobbered local file to be a new local version of
271 the added file, instead of replacing it. This could happen if the local
272 file had a future timestamp relative to the one coming from the repository.
273
274 The prop command does not synchronize or write out map if no options are
275 specified.
276
277 Help text added for move and branch commands. Help text for grab rewritten.
278
279 The CVSEDITOR and VISUAL environment variables are now checked, not
280 only EDITOR.
281
282 Release 0.98, 2002-10-13:
283
284 The prop command was mistakenly reading from MAP-LOCAL and writing to MAP,
285 which could cause information loss if the two differ. It now reads from MAP
286 and writes to MAP. (The property changes propagate to MAP-LOCAL by the
287 update operation invoked by prop, as before).
288
289 Invocation of external programs included in debug trace.
290
291 The filt command does not filter F- names if they are immediately preceded by
292 the MCVS/ prefix; such occurences are clearly concrete, sandbox-relative
293 references to the actual F- links, rather than abstract references.
294
295 The update command now supports the -C option, to fetch the repository
296 copy, throwing away local changes. It also now honors the --metaonly
297 and --nometa options.
298
299 The export command has been added, for checking out documents without creating
300 a working copy (no MCVS directory in the root of the checkout).
301
302 The watch command has been added. Note that its syntax differs from that
303 of CVS.
304
305 The watchers, editors, edit, and unedit commands have been added.
306
307 A script called mcvs-upgrade is now included, and installs alongside the mcvs
308 script. This allows the Meta-CVS Lisp image to recompile and patch itself,
309 giving users of binary distributions an easy way to upgrade from source
310 code.
311
312 Release 0.97, 2002-10-06:
313
314 Meta-CVS now builds and runs on Microsoft Windows, under Cygwin
315 (www.cygwin.com). It still relies on hard links, which requires
316 Windows 2000 or XP, and the NTFS filesystem. It probably won't
317 work over FAT.
318
319 New --debug option for verbose output.
320
321 Cleaned up of error messages. Error messages don't specify prefixes like
322 ``mcvs-add:'' or ``mcvs-grab:'' any more. Rather, the error handler adds the
323 ``mcvs:'' prefix when printing the messages in a situation when the error is
324 not continuable.
325
326 Fixed bug introduced in release 0.13: mcvs add -R was adding only
327 directories, effectively ignoring arguments that are regular files.
328 The error-continuation behavior of mcvs add has been revised.
329
330 Trying to rename an object onto itself, or to move the sandbox root
331 directory are no longer silent no-ops, but produce an error.
332
333 The remap command now preserves property lists, and picks up changes
334 in executable permission.
335
336 The grab command now notices when a file changes from having execute
337 permission to not having execute permission.
338
339 Operations on the path . now work in a partial sandbox.
340
341 Release 0.96, 2002-09-21:
342
343 The restore command was left broken during the change to the new
344 filemap format. It is now fixed.
345
346 The grab command now handles execute permission bits properly.
347
348 Some more commands have detailed help.
349
350 There is now a global option -i which specifies a script to be
351 executed. This allows Meta-CVS to be scripted using Lisp. For
352 instance suppose you have the following script and call it
353 list-matching:
354
355 #!/usr/local/bin/mcvs -i
356 (in-sandbox-root-dir
357 (let ((mapping (mapping-read *mcvs-map*))
358 (test-func (eval (read-from-string (pop *args*)))))
359 (dolist (entry mapping)
360 (with-slots (path raw-plist) entry
361 (when (funcall test-func raw-plist)
362 (format t "~a~%" path))))))
363
364 Then to list the names of files whose "importance" property is
365 a value greater than two, run:
366
367 ./list-matching '(lambda (plist)
368 (let ((imp (getf plist :importance)))
369 (and imp (> imp 2))))'
370
371 WARNING: Scripting accesses the guts of Meta-CVS directly, so scripts may
372 break as Meta-CVS is maintained. There is currently no published set of
373 stable interfaces.
374
375 Release 0.95, 2002-09-16:
376
377 The install.sh script no longer uses a borrowed copy of the clisp-link script
378 or the linkkit directory; these have been removed. These materials
379 are available at every CLISP installation; install.sh now finds them
380 and uses them. Users of non-x86 machines ran into problems because of this
381 because linkkit/clisp.h contains architecture-dependent information.
382
383 A bug in mcvs filt was fixed; it wasn't handling F- names that aren't found
384 in the map.
385
386 A more detailed help system now exists, though it's not complete. The ``mcvs
387 help'' command acts just like ``mcvs --help'' without any arguments. If given
388 an additional parameter which specifies a Meta-CVS command, it produces more
389 detailed documentation for that comand. Help exists already for a few
390 commands.
391
392 The release number is being warped to 0.95, which means that Meta-CVS is now
393 in beta. It is only five updates away from a 1.0 release.
394
395 Release 0.24, 2002-09-08:
396
397 The mapping entries for both symlinks and files have extensible property
398 lists now. These are stored in the optional fourth and fifth list elements,
399 respectively of the :FILE and :SYMLINK map entries.
400
401 Versioning of the execute permission of files is supported, represented as
402 the :EXEC property of a :FILE mapping entry.
403
404 Some lame syntax is provided for manipulating properties:
405
406 mcvs prop --set foo --clear bar --remove baz main.c list.c
407
408 will set the property FOO to true, set the property BAR to false,
409 and remove the property BAZ, in the files main.c and list.c.
410 The execute permission is represented by the property EXEC.
411
412 Release 0.23, 2002-09-02:
413
414 Bugfix: the grab command notices edited symlinks and incorporates the
415 changes into the mapping.
416
417 The grab command now figures out moved symlinks. Moved symlinks are those
418 whose pathname has changed, but which continue to point to the same object
419 (which may also have been moved).
420
421 Release 0.22, 2002-08-31:
422
423 Symbolic links are now versioned objects. The format of the MAP file
424 changes to accomodate this; the new Meta-CVS will read old MAP
425 files; when it writes it will write the new format. Old Meta-CVS won't
426 read the new format.
427
428 When a new module is created from an existing file tree, symbolic
429 links will be recognized and added. The add command will also add
430 symbolic links. Symbolic links can be renamed and moved; this does
431 nothing with their contents. They can point outside of the sandbox
432 using relative or absolute paths.
433
434 TODO:
435
436 There doesn't exist yet a special command to create symbolic links, nor to
437 retarget them; retargetting a link can be done manually by editing MCVS/MAP
438 and updating. Retargetting a link using the ln -s command, won't
439 backpropagate to the MAP file; an update will clobber the link.
440
441 The grab command does not yet compute symbolic link moves; a moved symbolic
442 link is treated as a remove and add. This will be easy to fix.
443
444 The remap command ignores symlinks.
445
446 Release 0.21, 2002-08-04:
447
448 Syntax of grab command changed. The branch is no longer specified as an
449 argument, but using the -r command option. If no revision is specified with
450 -r, then a -A must be specified to make the grab go to the main trunk. This
451 is a safety feature, since grabbing foreign snapshots to the trunk is almost
452 always wrong, though it could be useful during backup recovery, or for fixing
453 mistakes.
454
455 The way operating system functions are targetted has changed. Instead of
456 relying on the ``linuxlibc6'' module provided by CLISP, Meta-CVS now
457 has its own module for calling foreign functions. This module is portable;
458 it does not depend on the layout of glibc data structures. So Meta-CVS
459 is in theory now portable to other Unixes (provided they have /dev/urandom).
460
461 Release 0.20, 2002-07-27:
462
463 The commit command does a true global commit when given no file or directory
464 parameters, and not given the --metaonly option. This means commiting all
465 changes in the MCVS directory, even if they are in F-files that are not
466 currently mapped.
467
468 Release 0.19, 2002-07-16:
469
470 When moving multiple files or directories to a subdirectory, a
471 restart is now provided to skip over bad ones and continue.
472
473 Grab no longer scans files if there are only added files, or only removed
474 files. There are no moves to deduce in that case.
475
476 Restore properly creates lost+found at the root of a partial sandbox,
477 rather than at the abstract root of the module.
478
479 Some other algorithmic improvements made.
480
481 The first few sections of a user guide have been written.
482
483 Release 0.18, 2002-07-07:
484
485 Cool new feature: checkout takes an extra argument, which specifies a
486 subdirectory of the project. Specifying a subdirectory results in a ``partial
487 sandbox'', whose root directory is the specified subdirectory of the larger
488 project. The rest of the project is ``invisible'' to that sandbox. A
489 subdirectory argument can also be given to mcvs grab, which will cause it to
490 integrate the new source tree against a subtree of the Meta-CVS project
491 rather than the entire project. The subtree doesn't have to exist; in
492 that case you get an empty sandbox. Adding files to this sandbox will cause
493 the tree to exist in the project.
494
495 Bugfix: mcvs grab was not computing moves properly over small file sets,
496 wrongly treating them as removes and adds.
497
498 Release 0.17, 2002-07-02:
499
500 The create command no longer takes a vendor branch. Instead the symbol
501 ``Created-by-Meta-CVS'' is used as the vendor tag to satisfy CVS.
502
503 The grab command no longer does useless synchronization on files that
504 are about to be deleted.
505
506 New purge command; does ``cvs rm'' on deleted files, that is to say, F- files
507 that have no mapping.
508
509 New restore command; re-enters deleted files into the mapping, under
510 the ``lost+found'' directory, using their F- names as sandbox names.
511
512 Bugfix: when a checkout bails because it is requested over top of an existing
513 working copy, it must not delete that working copy's MCVS sub directory.
514
515 Release 0.16, 2002-06-29:
516
517 Added new heuristics to grab command. Paths are analyzed to determine
518 move distance. Greater distances reduce the confidence in a move.
519 These rules help sort out grabs in a project where similar or
520 duplicate files are subject to parallel moves, the ambiguity being
521 resolved by favoring shorter moves. Word comparisons are case-insensitive
522 now. Common words (those that appear in many files) are ignored when
523 comparing files.
524
525 New options, --meta and --metaonly. This area of Meta-CVS is cleaned
526 up a little bit. Most reporting commands like log or diff no longer
527 operate on meta files by default; they must be explicitly told to do
528 so with --meta or --metaonly. Only the commit command implicitly includes
529 metafiles by default, and so if this is not wanted, --nometa must be
530 selected. The update command remains special; if it is given file
531 arguments, it does not include meta files. If given no arguments, it
532 does a global CVS up across the entire project.
533
534 Release 0.15, 2002-06-25:
535
536 Optimized a string splitting routine which is used heavily for processing
537 paths; the result is a noticeable performance improvement in some commands
538 that process large numbers of files.
539
540 Renamed ``import'' command to ``create''.
541
542 Bugfix: checkout and create showed errors when removing directory, due to
543 broken :postorder support in directory walking function.
544
545 Bugfix: on failure, checkout was failing to delete the MCVS directory when
546 the checkout was directed to an existing directory.
547
548 New feature: ``mcvs grab'' command imports third-party snapshots to a
549 branch. This is invoked in the root directory of the source tree to import.
550 It determines what files have been added and removed in the snapshot, and
551 tries to compute which removes and adds are actually moves. This is done by
552 analyzing the actual contents of the files according to a crude algorithm to
553 do fuzzy comparisons, so that even files which were modified as well as moved
554 are discovered.
555
556 Release 0.14, 2002-06-21:
557
558 Bugfix: mcvs add was broken for files that have no suffix, causing
559 the underlying cvs add to fail. This was broken in 0.7 when type
560 handling was added.
561
562 Release 0.13, 2002-06-06:
563
564 Sandbox synchronization now handles the case of two files having
565 the same timestamp. An error is signaled, with interactive resolution
566 to synchronize either way, or do nothing.
567
568 If a file must be deleted on update, and this cannot be done, it
569 is now a continuable error.
570
571 Bugfix: pass -I ! to cvs import so that it won't ignore some F- files
572 whose suffix is one of the ones cvs ignores by default.
573
574 New command: mcvs remap. The user can move or delete files directly without
575 going through Meta-CVS. When mcvs remap is invoked, it will hunt down the
576 moves and deletions, and reconstruct the mapping accordingly; that is,
577 it remaps the new structure. This command uses inode numbers to identify
578 files; if a file is copied and then the original is deleted, that won't
579 be recognized as a move.
580
581 Release 0.12, 2002-04-18:
582
583 Bugfix: remove was broken in 0.10, fixed now.
584
585 Bugfix: status, diff, etc. work in empty project rather than complaining
586 ``. not known to Meta-CVS''.
587
588 The checkout operation now can now populate an existing directory, including
589 the current working directory (mcvs co -d . modulename). Of course, the
590 target directory cannot be an existing Meta-CVS sandbox.
591 This is a useful feature, which allows sandboxes to blend with an
592 existing directory structure.
593
594 Checkout now uses the same function for generating the sandbox
595 structure as does update. This is now necessary, because local files
596 can be clobbered by the checkout.
597
598 Release 0.11, 2002-04-12:
599
600 Bugfix: when branch invokes rtag, it now takes the CVSROOT information
601 from CVS/Root and passes it via -d. This is necessary because rtag does not
602 look at a local CVS subdirectory for this information, only the
603 -d option or the environment variable.
604
605 Command for listing branches added (list-branches or lb). Also shows
606 what sticky tag the sandbox is updated to.
607
608 Command for switching branches added (switch or sw).
609
610 Merge detects that working copy is on non-branch tag and bails.
611
612 Absolute paths can now be specified as file arguments. These are
613 based from the root directory of the sandbox, not the actual filesystem root
614 directory.
615
616 Release 0.10, 2002-04-03:
617
618 Automatic merging implemented. Branch is created using branch command,
619 and merging from another branch is done using simple merge command.
620 Meta-CVS maintains the tags to keep track of what has been merged
621 from what branch to what branch.
622
623 Bugfix: checkout -d foo bar was complaining about directory bar already
624 existing, even though it should only care about foo.
625
626 The remove command now requires explicit -R option to recursively remove
627 a directory. It has more detailed error reporting.
628
629 The move command has better error reporting.
630
631 Release 0.9, 2002-03-14:
632
633 Bugfix: the .cvsignore file is now subject to tagging, status, etc,
634 (unless --nometa is specified, of course).
635
636 The mcvs filt command takes -r <revision> or -D <date> parameters.
637 This means to retrieve the MAP file as of the specified revision or
638 date and use that mapping to perform the filtering translation,
639 rather than using MAP-LOCAL.
640
641 The mcvs update command takes filename arguments now and also
642 supports the -p option.
643
644 Release 0.8, 2002-03-13:
645
646 Bug fixed in mcvs add; it was not ignoring files that are already
647 listed as :ignore in MCVS/TYPES.
648
649 Bug fixed in mcvs move: a target with a trailing slash is now treated
650 as a directory (if it does not already exist and is a non-directory).
651
652 The -d option of mcvs checkout can now be used to override the checkout
653 directory, which is normally the same as the module name.
654
655 The global options --version, --help, -q, -Q and -e are now supported.
656
657 New global options --error-continue and --error-terminate to disable
658 interactive error handling in two different ways.
659
660 Log level of many messages has changed; many messages have been
661 relegated to debug level.
662
663 The import command now creates a .cvsignore file containing the name
664 MAP-LOCAL.
665
666 Release 0.7, 2002-03-09:
667
668 The import command collects a list of the file suffixes and brings up
669 a text editor to allow the user to edit their CVS keyword expansion
670 behavior. This information is kept in a new metafile called TYPES. The
671 add command also updates TYPES; it identifies any suffixes which are new,
672 and brings up an editor. The F- files now carry suffixes, which
673 simplifies interfacing with CVS, and also allows cvswrappers to work.
674
675 Recursive add works (mcvs add -R ...).
676
677 New command line option --nometa allows metafiles to be excluded from
678 diff, tag, and other commands; without the option they are inserted
679 into the list of files to be processed.
680
681 The commit option now takes an optional list of files or directories,
682 just like tag, diff, and others.
683
684 Release 0.6, 2002-02-16:
685
686 The add operation was horribly broken in 0.5, it is fixed.
687
688 User can interactively select whether to clobber local files or leave
689 everything alone. Effects on the mapping file of a mcvs move are undone,
690 if the restructuring is rolled back, or raises a condition that leads
691 to termination.
692
693 Meta-CVS now keeps a new meta-file called MCVS/TYPES. This is created
694 during import, and specifies the CVS keyword expansion mode for files
695 having given suffixes, and can also tell Meta-CVS to ignore certain files
696 when importing or adding.
697
698 Release 0.5, 2002-02-10:
699
700 Much improved error handling. Filesystem rearranging code performs
701 sanity checks to prevent adds and moves from accidentally clobbering
702 local files. A rearranging gone bad can be rolled back. Effects
703 of a failed mcvs add can also be rolled back.
704
705 MAP-LOCAL is now sorted in the same way as MAP.
706
707 Release 0.4, 2002-02-04:
708
709 CVS is invoked using internal function resembling the xargs utility,
710 which ensures that multiple command lines are generated if necessary to
711 avoid surpassing the operating system limit on argument and environment
712 vector size. This is important when someone wants to diff or stat a
713 subdirectory, which requires Meta-CVS to pick out the individual files
714 at the CVS level.
715
716 The tag, log, status and annotate commands are now available.
717
718 The MAP file is sorted on F- file names now, not path names. This
719 improves merging, since files do not move within the file when
720 they are renamed.
721
722 Release 0.3, 2002-02-02:
723
724 Process termination done is properly in top level handler, by a nonlocal
725 exit. The program properly indicates failed termination when it exits
726 due to an error condition.
727
728 Corrections are made in the command line option processing. If z is an
729 option that takes an argument, and the argument is -zx, then x is
730 treated as the argument to the option. Long options arguments are
731 recognized properly, according to the --opt=arg convention. The option
732 processing is restructured. Most of the commands now take the
733 appropriate cvs command-specific options.
734
735 The update algorithm performs dupe checking over the map, which could
736 happen during a merge.
737
738 Some more bugfixing has been done to the move command. It was still not
739 handling right some cases of an unversioned file being clobbered. Also,
740 it wasn't renaming a directory containing just one file.
741
742 I did some performance investigation for larger file sets, and
743 ended up rewriting the code that computes filesystem restructuring
744 changes and map duplicates.
745
746 Release 0.2, 2002-01-30:
747
748 Changed official name from MCVS to Meta-CVS. The move command now
749 performs some filesystem tests so it does the right thing when a versioned
750 file is moved over a non-versioned file, or when a file is moved into
751 a directory not known to Meta-CVS. Factored out reading and writing of
752 map files into functions.
753
754 Release 0.1, 2002-01-28:
755
756 Support for mcvs diff -u added. The -R option works for mcvs add command.
757 Bug fixed in mcvs mv command; it wasn't working analogously to the Unix
758 mv command when copying a directory to an existing directory.
759
760 Release 0.0, 2002-01-27:
761
762 This is alpha software. It is not complete, and lacks documentation.
763 However, it is already usable in its present state and is being used for
764 version control by its author. If you can program in Common Lisp and would
765 like to help, take a look through the TODO file. Send me patches, ideas,
766 feature requests.

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