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Contents of /meta-cvs/F-B3689DBB46386B16F4B2331934B69223

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Revision - (hide annotations)
Wed Feb 26 03:53:28 2003 UTC (11 years, 1 month ago) by kaz
Branch: mcvs-1-0-branch
Changes since +4 -0 lines
* code/unix-bindings/wrap.c (mcvs_spawn): One more waitpid() bug!
The SIGCHLD signal handler was being set in the child process only,
so although we fixed the waitpid() behavior in the CVS child
process, we did not fix it in the Meta-CVS process. The ECHILD
problem was sporadically reproduced by Johannes Grødem on a fast
Athlon machine; it requires CVS to exit before Meta-CVS reaches
the waitpid() call.
1 kaz 1.115 Release Notes for Meta-CVS
2 kaz 1.1
3 kaz Release 1.0.5, 2003-0?-??:
5     Bugfix: some one-argument command line options of CVS must be
6     specifies as a single parameter, with no separation between the
7     option letter and the argument characters. For example:
9     cvs log -r rev-1::rev-2 # invalid
10     cvs log -rrev1::rev2 # correct
12     Meta-CVS accepts either syntax, but it was generating the first form
13     when calling CVS. Now, *all* one-letter options that have an argument
14     are formatted in the second manner.
16 kaz Bugfix: one more waitpid() issue was fixed; on fast machines, under
17     Linux, it was observed that from time to time Meta-CVS would get
18     a -1/ECHILD when waiting for the CVS process.
20 kaz Release 1.0.4, 2003-02-20:
22     Fix remaining occurences of the CVS ``No child processes'' abort
23     problem, affecting the list-branches command, merge command
24     and the -r option of the filt command.
26     Release 1.0.3, 2003-02-12:
28     ! THIS RELEASE IS WITHDRAWN. It was accidentally created from the
29     ! experimental main trunk of the Meta-CVS codebase, rather than
30     ! the 1.0 branch. But 1.0.4 does contain all of the changes
31     ! described here.
32 kaz
33     Fix for the CVS ``No child processes'' abort problem. It turns out
34     that CLISP sets the signal handling action for the SIGCHLD signal
35     to SIG_IGN, which is inherited by child processes across the
36     fork() and execvp() calls used in our mcvs_spawn() function.
37     We correct the problem by resetting the signal handler to SIG_DFL
38     just before executing the new process image.
40 kaz New feature, --up option. The argument is a nonnegative integer value
41     (default is zero) which specifies how many sandbox nesting levels to
42     escape out of when locating the sandbox root. This helps work with
43     nested Meta-CVS sandboxes.
45 kaz Release 1.0.2, 2003-02-10:
46 kaz
47     Bugfix in waitpid logic in the C library for running external processes;
48     we were not dealing with an interrupted waitpid.
50 kaz Behavior of mcvs tag is changed: when there are no filename arguments,
51     the whole tree is tagged including the metafiles. In other words, it
52     now works like the commit command.
54 kaz Release 1.0.1, 2003-01-30:
55 kaz
56     Hard link sync optimization: update of a subset of files, commit, and
57     other operations like log and diff don't need to synchronize all
58     hard links, just the ones operated on.
60 kaz The merge and remerge commands support -k option for overriding
61     CVS keyword expansion mode.
63 kaz Fixes to getcwd error handling.
64 kaz
65     Improvement in install.sh script's logic for locating CLISP installation
66     directory.
67 kaz
68 kaz Release 1.0, 2003-01-01:
69 kaz
70 kaz NOTE: It's not possible to upgrade to this release via mcvs-upgrade,
71     because it adds some new C functions to the Lisp executable.
73 kaz Security fix: read-time evaluation was not suppressed when reading
74     structured data, like MCVS/MAP and MCVS/TYPES. This means that it
75     was possible for Alice to check in something that would execute
76     arbitrary code on Bob's computer.
78 kaz Optimization: use fork and exec to launch CVS rather than CLISP's
79     run-program function, which indirects through the shell interpreter.
80 kaz (On Cygwin, the spawnvp function is used).
81 kaz
82 kaz Performance fix: stat() was being called superfluously by the
83     hard synchronization code, twice for each file.
85 kaz Build fix: install.sh works when CLISP executable is called ``lisp.exe'',
86     which is the case under Cygwin with newer CLISP releases.
88 kaz Release 0.99, 2002-11-17:
89 kaz
90 kaz New link command for creating symbolic links.
92 kaz Global option -n (dry run---don't modify filesystem) is processed
93     internally now, not just passed to CVS.
95 kaz Failure to invoke text editor is handled.
97 kaz The -r option of filt is fixed; it has been broken since the change to the
98     new MAP format, because it was reading the raw map representation, not
99     passing it through the right conversion steps that are needed now.
101 kaz Bugfix to purge and remap commands: they were fooled by CVS-generated
102     files in the MCVS/CVS directory. Specifically, files having F- names, and a
103     the suffix ,t.
105 kaz Bugfix to add logic in directory restructuring: there was the possibility
106     of mistakingly taking a clobbered local file to be a new local version of
107     the added file, instead of replacing it. This could happen if the local
108     file had a future timestamp relative to the one coming from the repository.
110 kaz The prop command does not synchronize or write out map if no options are
111     specified.
113 kaz Help text added for move and branch commands. Help text for grab rewritten.
114 kaz
115 kaz The CVSEDITOR and VISUAL environment variables are now checked, not
116     only EDITOR.
118 kaz Release 0.98, 2002-10-13:
119 kaz
120 kaz The prop command was mistakenly reading from MAP-LOCAL and writing to MAP,
121     which could cause information loss if the two differ. It now reads from MAP
122     and writes to MAP. (The property changes propagate to MAP-LOCAL by the
123     update operation invoked by prop, as before).
125 kaz Invocation of external programs included in debug trace.
126 kaz
127 kaz The filt command does not filter F- names if they are immediately preceded by
128     the MCVS/ prefix; such occurences are clearly concrete, sandbox-relative
129     references to the actual F- links, rather than abstract references.
131 kaz The update command now supports the -C option, to fetch the repository
132     copy, throwing away local changes. It also now honors the --metaonly
133     and --nometa options.
134 kaz
135     The export command has been added, for checking out documents without creating
136     a working copy (no MCVS directory in the root of the checkout).
137 kaz
138 kaz The watch command has been added. Note that its syntax differs from that
139     of CVS.
140 kaz
141     The watchers, editors, edit, and unedit commands have been added.
142 kaz
143     A script called mcvs-upgrade is now included, and installs alongside the mcvs
144     script. This allows the Meta-CVS Lisp image to recompile and patch itself,
145     giving users of binary distributions an easy way to upgrade from source
146     code.
148 kaz 1.127 Release 0.97, 2002-10-06:
149 kaz 1.119
150     Meta-CVS now builds and runs on Microsoft Windows, under Cygwin
151     (www.cygwin.com). It still relies on hard links, which requires
152     Windows 2000 or XP, and the NTFS filesystem. It probably won't
153     work over FAT.
154 kaz 1.120
155     New --debug option for verbose output.
157     Cleaned up of error messages. Error messages don't specify prefixes like
158     ``mcvs-add:'' or ``mcvs-grab:'' any more. Rather, the error handler adds the
159     ``mcvs:'' prefix when printing the messages in a situation when the error is
160     not continuable.
161 kaz 1.119
162 kaz 1.121 Fixed bug introduced in release 0.13: mcvs add -R was adding only
163     directories, effectively ignoring arguments that are regular files.
164 kaz 1.122 The error-continuation behavior of mcvs add has been revised.
165 kaz 1.121
166 kaz 1.125 Trying to rename an object onto itself, or to move the sandbox root
167     directory are no longer silent no-ops, but produce an error.
168 kaz 1.123
169 kaz 1.124 The remap command now preserves property lists, and picks up changes
170     in executable permission.
172     The grab command now notices when a file changes from having execute
173     permission to not having execute permission.
175 kaz 1.126 Operations on the path . now work in a partial sandbox.
177 kaz 1.118 Release 0.96, 2002-09-21:
178 kaz 1.110
179     The restore command was left broken during the change to the new
180     filemap format. It is now fixed.
182 kaz 1.111 The grab command now handles execute permission bits properly.
184 kaz 1.112 Some more commands have detailed help.
186 kaz 1.113 There is now a global option -i which specifies a script to be
187 kaz 1.114 executed. This allows Meta-CVS to be scripted using Lisp. For
188     instance suppose you have the following script and call it
189     list-matching:
190 kaz 1.113
191     #!/usr/local/bin/mcvs -i
192     (in-sandbox-root-dir
193 kaz 1.114 (let ((mapping (mapping-read *mcvs-map*))
194 kaz 1.117 (test-func (eval (read-from-string (pop *args*)))))
195 kaz 1.114 (dolist (entry mapping)
196     (with-slots (path raw-plist) entry
197 kaz 1.117 (when (funcall test-func raw-plist)
198 kaz 1.114 (format t "~a~%" path))))))
200     Then to list the names of files whose "importance" property is
201     a value greater than two, run:
203     ./list-matching '(lambda (plist)
204     (let ((imp (getf plist :importance)))
205     (and imp (> imp 2))))'
206 kaz 1.117
207     WARNING: Scripting accesses the guts of Meta-CVS directly, so scripts may
208     break as Meta-CVS is maintained. There is currently no published set of
209     stable interfaces.
210 kaz 1.113
211 kaz 1.109 Release 0.95, 2002-09-16:
212 kaz 1.104
213 kaz 1.107 The install.sh script no longer uses a borrowed copy of the clisp-link script
214     or the linkkit directory; these have been removed. These materials
215     are available at every CLISP installation; install.sh now finds them
216     and uses them. Users of non-x86 machines ran into problems because of this
217     because linkkit/clisp.h contains architecture-dependent information.
218 kaz 1.104
219 kaz 1.105 A bug in mcvs filt was fixed; it wasn't handling F- names that aren't found
220     in the map.
222 kaz 1.108 A more detailed help system now exists, though it's not complete. The ``mcvs
223     help'' command acts just like ``mcvs --help'' without any arguments. If given
224     an additional parameter which specifies a Meta-CVS command, it produces more
225     detailed documentation for that comand. Help exists already for a few
226     commands.
228 kaz 1.107 The release number is being warped to 0.95, which means that Meta-CVS is now
229     in beta. It is only five updates away from a 1.0 release.
230 kaz 1.106
231 kaz 1.103 Release 0.24, 2002-09-08:
232 kaz 1.98
233 kaz 1.99 The mapping entries for both symlinks and files have extensible property
234     lists now. These are stored in the optional fourth and fifth list elements,
235     respectively of the :FILE and :SYMLINK map entries.
237     Versioning of the execute permission of files is supported, represented as
238     the :EXEC property of a :FILE mapping entry.
239 kaz 1.98
240 kaz 1.100 Some lame syntax is provided for manipulating properties:
242 kaz 1.102 mcvs prop --set foo --clear bar --remove baz main.c list.c
243 kaz 1.100
244     will set the property FOO to true, set the property BAR to false,
245     and remove the property BAZ, in the files main.c and list.c.
246     The execute permission is represented by the property EXEC.
248 kaz 1.97 Release 0.23, 2002-09-02:
249 kaz 1.95
250 kaz 1.96 Bugfix: the grab command notices edited symlinks and incorporates the
251     changes into the mapping.
253     The grab command now figures out moved symlinks. Moved symlinks are those
254     whose pathname has changed, but which continue to point to the same object
255     (which may also have been moved).
256 kaz 1.95
257 kaz 1.94 Release 0.22, 2002-08-31:
258 kaz 1.93
259     Symbolic links are now versioned objects. The format of the MAP file
260     changes to accomodate this; the new Meta-CVS will read old MAP
261     files; when it writes it will write the new format. Old Meta-CVS won't
262     read the new format.
264     When a new module is created from an existing file tree, symbolic
265     links will be recognized and added. The add command will also add
266     symbolic links. Symbolic links can be renamed and moved; this does
267     nothing with their contents. They can point outside of the sandbox
268     using relative or absolute paths.
270 kaz 1.94 TODO:
272 kaz 1.93 There doesn't exist yet a special command to create symbolic links, nor to
273     retarget them; retargetting a link can be done manually by editing MCVS/MAP
274     and updating. Retargetting a link using the ln -s command, won't
275 kaz 1.94 backpropagate to the MAP file; an update will clobber the link.
277     The grab command does not yet compute symbolic link moves; a moved symbolic
278     link is treated as a remove and add. This will be easy to fix.
280     The remap command ignores symlinks.
281 kaz 1.93
282 kaz 1.92 Release 0.21, 2002-08-04:
283 kaz 1.88
284 kaz 1.89 Syntax of grab command changed. The branch is no longer specified as an
285     argument, but using the -r command option. If no revision is specified with
286     -r, then a -A must be specified to make the grab go to the main trunk. This
287     is a safety feature, since grabbing foreign snapshots to the trunk is almost
288     always wrong, though it could be useful during backup recovery, or for fixing
289     mistakes.
291 kaz 1.91 The way operating system functions are targetted has changed. Instead of
292     relying on the ``linuxlibc6'' module provided by CLISP, Meta-CVS now
293     has its own module for calling foreign functions. This module is portable;
294     it does not depend on the layout of glibc data structures. So Meta-CVS
295     is in theory now portable to other Unixes (provided they have /dev/urandom).
297 kaz 1.87 Release 0.20, 2002-07-27:
298 kaz 1.86
299     The commit command does a true global commit when given no file or directory
300     parameters, and not given the --metaonly option. This means commiting all
301     changes in the MCVS directory, even if they are in F-files that are not
302     currently mapped.
304 kaz 1.85 Release 0.19, 2002-07-16:
305 kaz 1.81
306     When moving multiple files or directories to a subdirectory, a
307     restart is now provided to skip over bad ones and continue.
309 kaz 1.83 Grab no longer scans files if there are only added files, or only removed
310     files. There are no moves to deduce in that case.
312 kaz 1.84 Restore properly creates lost+found at the root of a partial sandbox,
313     rather than at the abstract root of the module.
315 kaz 1.83 Some other algorithmic improvements made.
316 kaz 1.82
317     The first few sections of a user guide have been written.
319 kaz 1.80 Release 0.18, 2002-07-07:
320 kaz 1.77
321 kaz 1.78 Cool new feature: checkout takes an extra argument, which specifies a
322     subdirectory of the project. Specifying a subdirectory results in a ``partial
323     sandbox'', whose root directory is the specified subdirectory of the larger
324     project. The rest of the project is ``invisible'' to that sandbox. A
325     subdirectory argument can also be given to mcvs grab, which will cause it to
326     integrate the new source tree against a subtree of the Meta-CVS project
327 kaz 1.79 rather than the entire project. The subtree doesn't have to exist; in
328     that case you get an empty sandbox. Adding files to this sandbox will cause
329     the tree to exist in the project.
330 kaz 1.78
331 kaz 1.77 Bugfix: mcvs grab was not computing moves properly over small file sets,
332     wrongly treating them as removes and adds.
334 kaz 1.76 Release 0.17, 2002-07-02:
335 kaz 1.71
336     The create command no longer takes a vendor branch. Instead the symbol
337     ``Created-by-Meta-CVS'' is used as the vendor tag to satisfy CVS.
339 kaz 1.72 The grab command no longer does useless synchronization on files that
340     are about to be deleted.
342 kaz 1.75 New purge command; does ``cvs rm'' on deleted files, that is to say, F- files
343     that have no mapping.
345     New restore command; re-enters deleted files into the mapping, under
346     the ``lost+found'' directory, using their F- names as sandbox names.
347 kaz 1.73
348 kaz 1.74 Bugfix: when a checkout bails because it is requested over top of an existing
349     working copy, it must not delete that working copy's MCVS sub directory.
351 kaz 1.70 Release 0.16, 2002-06-29:
352 kaz 1.67
353     Added new heuristics to grab command. Paths are analyzed to determine
354     move distance. Greater distances reduce the confidence in a move.
355     These rules help sort out grabs in a project where similar or
356     duplicate files are subject to parallel moves, the ambiguity being
357 kaz 1.68 resolved by favoring shorter moves. Word comparisons are case-insensitive
358     now. Common words (those that appear in many files) are ignored when
359     comparing files.
360 kaz 1.67
361 kaz 1.69 New options, --meta and --metaonly. This area of Meta-CVS is cleaned
362     up a little bit. Most reporting commands like log or diff no longer
363     operate on meta files by default; they must be explicitly told to do
364     so with --meta or --metaonly. Only the commit command implicitly includes
365     metafiles by default, and so if this is not wanted, --nometa must be
366     selected. The update command remains special; if it is given file
367     arguments, it does not include meta files. If given no arguments, it
368     does a global CVS up across the entire project.
370 kaz 1.66 Release 0.15, 2002-06-25:
371 kaz 1.61
372 kaz 1.65 Optimized a string splitting routine which is used heavily for processing
373     paths; the result is a noticeable performance improvement in some commands
374     that process large numbers of files.
375 kaz 1.61
376 kaz 1.62 Renamed ``import'' command to ``create''.
378 kaz 1.65 Bugfix: checkout and create showed errors when removing directory, due to
379     broken :postorder support in directory walking function.
380 kaz 1.63
381 kaz 1.65 Bugfix: on failure, checkout was failing to delete the MCVS directory when
382     the checkout was directed to an existing directory.
384 kaz 1.66 New feature: ``mcvs grab'' command imports third-party snapshots to a
385 kaz 1.65 branch. This is invoked in the root directory of the source tree to import.
386     It determines what files have been added and removed in the snapshot, and
387     tries to compute which removes and adds are actually moves. This is done by
388     analyzing the actual contents of the files according to a crude algorithm to
389     do fuzzy comparisons, so that even files which were modified as well as moved
390     are discovered.
391 kaz 1.64
392 kaz 1.60 Release 0.14, 2002-06-21:
393 kaz 1.59
394     Bugfix: mcvs add was broken for files that have no suffix, causing
395 kaz 1.60 the underlying cvs add to fail. This was broken in 0.7 when type
396     handling was added.
397 kaz 1.59
398 kaz 1.58 Release 0.13, 2002-06-06:
399 kaz 1.55
400     Sandbox synchronization now handles the case of two files having
401     the same timestamp. An error is signaled, with interactive resolution
402     to synchronize either way, or do nothing.
404 kaz 1.56 If a file must be deleted on update, and this cannot be done, it
405     is now a continuable error.
407     Bugfix: pass -I ! to cvs import so that it won't ignore some F- files
408     whose suffix is one of the ones cvs ignores by default.
410 kaz 1.57 New command: mcvs remap. The user can move or delete files directly without
411     going through Meta-CVS. When mcvs remap is invoked, it will hunt down the
412     moves and deletions, and reconstruct the mapping accordingly; that is,
413     it remaps the new structure. This command uses inode numbers to identify
414     files; if a file is copied and then the original is deleted, that won't
415     be recognized as a move.
417 kaz 1.53 Release 0.12, 2002-04-18:
418 kaz 1.51
419     Bugfix: remove was broken in 0.10, fixed now.
421 kaz 1.54 Bugfix: status, diff, etc. work in empty project rather than complaining
422     ``. not known to Meta-CVS''.
424 kaz 1.52 The checkout operation now can now populate an existing directory, including
425     the current working directory (mcvs co -d . modulename). Of course, the
426     target directory cannot be an existing Meta-CVS sandbox.
427     This is a useful feature, which allows sandboxes to blend with an
428     existing directory structure.
430     Checkout now uses the same function for generating the sandbox
431     structure as does update. This is now necessary, because local files
432     can be clobbered by the checkout.
434 kaz 1.50 Release 0.11, 2002-04-12:
435 kaz 1.46
436     Bugfix: when branch invokes rtag, it now takes the CVSROOT information
437     from CVS/Root and passes it via -d. This is necessary because rtag does not
438     look at a local CVS subdirectory for this information, only the
439     -d option or the environment variable.
441 kaz 1.48 Command for listing branches added (list-branches or lb). Also shows
442     what sticky tag the sandbox is updated to.
444     Command for switching branches added (switch or sw).
446     Merge detects that working copy is on non-branch tag and bails.
447 kaz 1.47
448 kaz 1.49 Absolute paths can now be specified as file arguments. These are
449     based from the root directory of the sandbox, not the actual filesystem root
450     directory.
452 kaz 1.45 Release 0.10, 2002-04-03:
453 kaz 1.44
454     Automatic merging implemented. Branch is created using branch command,
455     and merging from another branch is done using simple merge command.
456     Meta-CVS maintains the tags to keep track of what has been merged
457     from what branch to what branch.
458 kaz 1.40
459     Bugfix: checkout -d foo bar was complaining about directory bar already
460     existing, even though it should only care about foo.
462 kaz 1.41 The remove command now requires explicit -R option to recursively remove
463 kaz 1.42 a directory. It has more detailed error reporting.
464 kaz 1.41
465 kaz 1.43 The move command has better error reporting.
467 kaz 1.39 Release 0.9, 2002-03-14:
468 kaz 1.37
469     Bugfix: the .cvsignore file is now subject to tagging, status, etc,
470     (unless --nometa is specified, of course).
471 kaz 1.38
472     The mcvs filt command takes -r <revision> or -D <date> parameters.
473     This means to retrieve the MAP file as of the specified revision or
474     date and use that mapping to perform the filtering translation,
475     rather than using MAP-LOCAL.
476 kaz 1.39
477     The mcvs update command takes filename arguments now and also
478     supports the -p option.
479 kaz 1.37
480 kaz 1.36 Release 0.8, 2002-03-13:
481 kaz 1.28
482 kaz 1.29 Bug fixed in mcvs add; it was not ignoring files that are already
483     listed as :ignore in MCVS/TYPES.
485 kaz 1.34 Bug fixed in mcvs move: a target with a trailing slash is now treated
486     as a directory (if it does not already exist and is a non-directory).
488 kaz 1.30 The -d option of mcvs checkout can now be used to override the checkout
489     directory, which is normally the same as the module name.
491 kaz 1.31 The global options --version, --help, -q, -Q and -e are now supported.
493 kaz 1.33 New global options --error-continue and --error-terminate to disable
494     interactive error handling in two different ways.
496 kaz 1.32 Log level of many messages has changed; many messages have been
497     relegated to debug level.
499 kaz 1.35 The import command now creates a .cvsignore file containing the name
500     MAP-LOCAL.
502 kaz 1.24 Release 0.7, 2002-03-09:
504 kaz 1.27 The import command collects a list of the file suffixes and brings up
505     a text editor to allow the user to edit their CVS keyword expansion
506     behavior. This information is kept in a new metafile called TYPES. The
507     add command also updates TYPES; it identifies any suffixes which are new,
508     and brings up an editor. The F- files now carry suffixes, which
509     simplifies interfacing with CVS, and also allows cvswrappers to work.
511     Recursive add works (mcvs add -R ...).
513     New command line option --nometa allows metafiles to be excluded from
514     diff, tag, and other commands; without the option they are inserted
515     into the list of files to be processed.
516 kaz 1.25
517 kaz 1.27 The commit option now takes an optional list of files or directories,
518     just like tag, diff, and others.
519 kaz 1.26
520 kaz 1.23 Release 0.6, 2002-02-16:
521 kaz 1.19
522 kaz 1.27 The add operation was horribly broken in 0.5, it is fixed.
523 kaz 1.21
524 kaz 1.27 User can interactively select whether to clobber local files or leave
525     everything alone. Effects on the mapping file of a mcvs move are undone,
526     if the restructuring is rolled back, or raises a condition that leads
527     to termination.
529     Meta-CVS now keeps a new meta-file called MCVS/TYPES. This is created
530     during import, and specifies the CVS keyword expansion mode for files
531     having given suffixes, and can also tell Meta-CVS to ignore certain files
532     when importing or adding.
533 kaz 1.22
534 kaz 1.18 Release 0.5, 2002-02-10:
535 kaz 1.14
536 kaz 1.27 Much improved error handling. Filesystem rearranging code performs
537     sanity checks to prevent adds and moves from accidentally clobbering
538     local files. A rearranging gone bad can be rolled back. Effects
539     of a failed mcvs add can also be rolled back.
540 kaz 1.14
541 kaz 1.27 MAP-LOCAL is now sorted in the same way as MAP.
542 kaz 1.15
543 kaz 1.13 Release 0.4, 2002-02-04:
544 kaz 1.10
545 kaz 1.27 CVS is invoked using internal function resembling the xargs utility,
546     which ensures that multiple command lines are generated if necessary to
547     avoid surpassing the operating system limit on argument and environment
548     vector size. This is important when someone wants to diff or stat a
549     subdirectory, which requires Meta-CVS to pick out the individual files
550     at the CVS level.
552     The tag, log, status and annotate commands are now available.
554     The MAP file is sorted on F- file names now, not path names. This
555     improves merging, since files do not move within the file when
556     they are renamed.
557 kaz 1.12
558 kaz 1.5 Release 0.3, 2002-02-02:
560 kaz 1.27 Process termination done is properly in top level handler, by a nonlocal
561     exit. The program properly indicates failed termination when it exits
562     due to an error condition.
564     Corrections are made in the command line option processing. If z is an
565     option that takes an argument, and the argument is -zx, then x is
566     treated as the argument to the option. Long options arguments are
567     recognized properly, according to the --opt=arg convention. The option
568     processing is restructured. Most of the commands now take the
569     appropriate cvs command-specific options.
571     The update algorithm performs dupe checking over the map, which could
572     happen during a merge.
574     Some more bugfixing has been done to the move command. It was still not
575     handling right some cases of an unversioned file being clobbered. Also,
576     it wasn't renaming a directory containing just one file.
578     I did some performance investigation for larger file sets, and
579     ended up rewriting the code that computes filesystem restructuring
580     changes and map duplicates.
581 kaz 1.5
582 kaz 1.4 Release 0.2, 2002-01-30:
584 kaz 1.27 Changed official name from MCVS to Meta-CVS. The move command now
585     performs some filesystem tests so it does the right thing when a versioned
586     file is moved over a non-versioned file, or when a file is moved into
587     a directory not known to Meta-CVS. Factored out reading and writing of
588     map files into functions.
589 kaz 1.4
590 kaz 1.2 Release 0.1, 2002-01-28:
592 kaz 1.27 Support for mcvs diff -u added. The -R option works for mcvs add command.
593     Bug fixed in mcvs mv command; it wasn't working analogously to the Unix
594     mv command when copying a directory to an existing directory.
595 kaz 1.2
596     Release 0.0, 2002-01-27:
597 kaz 1.1
598 kaz 1.27 This is alpha software. It is not complete, and lacks documentation.
599     However, it is already usable in its present state and is being used for
600     version control by its author. If you can program in Common Lisp and would
601     like to help, take a look through the TODO file. Send me patches, ideas,
602     feature requests.

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