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Contents of /meta-cvs/F-B3689DBB46386B16F4B2331934B69223

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Revision - (hide annotations)
Tue Apr 22 05:53:42 2003 UTC (10 years, 11 months ago) by kaz
Branch: mcvs-1-0-branch
Changes since +11 -0 lines
Slightly redesigned error handling protocol.

* code/update.lisp (mcvs-update): Change continue restart to bail.

* code/add.lisp (mcvs-add): Likewise.

* code/error.lisp (mcvs-error-handler): Specially recognize two
additional restart symbols, bail and info. A bail restart performs
any rolling back and cleanup and terminates. Continuation is now
properly reserved for actions that proceed boldly to finish
the job, possibly irretrievably clobbering precious data.
The info restart is now a standard way to indicate that more
details about the error can be obtained, so this does not have
to be represented as a special action with an ad-hoc restart.

* code/create.lisp (mcvs-create): Change show restart to info.

* code/remap.lisp (mcvs-remap): Change ignore restart to continue.

* code/mapping.lisp (mapping-update): Change ignore and do-clobber
restarts to continue, and print-clobbers restart to info.
Change continue restart to bail.
1 kaz 1.115 Release Notes for Meta-CVS
2 kaz 1.1
3 kaz Release 1.0.7, 2003-0?-??:
5     Revamped error recovery logic. To continue in an error situation now
6     consistently means ``take the bold action that may erase data''
7     or ``proceed in the most obvious way to finish the specified job''.
8     It never means ``roll back the operation and bail''. This recovery action is
9     now referred to as bailing, and is identified by the `B' command in
10     the error handler menu, whenever available. Errors that have more information
11     to print, like a list of files or whatever, now indicate it in a standard
12     way which translates to the `I' menu command.
14 kaz Release 1.0.6, 2003-04-14:
15 kaz
16     The create command detects the existence of text editor backup files (or
17     other junk) in the MCVS directory after the editor is invoked on the
18     TYPES file. The user is prompted regarding their removal. If these files are
19     not removed, cvs import will bring them into the repository.
21 kaz When Meta-CVS has to split a large CVS command into two or more
22     invocations with shorter argument lists, it now does not stop when one of
23     these invocations is unsuccessful; it does all of them, and combines
24     their termination indications by a logical AND. There was a bug in this
25     logic also which caused, upon termination failure, a cvs command to be
26     repeated for the same list of files.
28 kaz Synchronization logic has been revamped. Unnecessary synchronizations
29     have been removed, which will make some commands run faster.
30     Synchronizations now have specific directions; for instance before
31     a CVS commit or update, changes are pushed from the directory tree to the MCVS
32     directory only, and after the CVS operation, in the reverse direction only.
34     Meta-CVS will no longer re-create missing F- files by linking from the
35     directory tree. Doing this causes two problems. One is that if a user
36     manually removes a F- file and do ``mcvs up'', she wants CVS to fetch a clean
37     copy and push it into the tree. She does not want the file to be restored
38     from the tree prior to the CVS update. Secondly, sometimes CVS itself
39     removes files. If we re-create the files, CVS will consider them to
40     be ``in the way''.
42 kaz Failures to read from the MAP or MAP-LOCAL files are treated as interactive,
43     continuable errors. By continuing, the user agrees that the behavior will
44     be as if an empty map were read.
46 kaz The grab command uses less memory for performing move analysis.
48 kaz Release 1.0.5, 2003-02-25:
49 kaz
50     Bugfix: some one-argument command line options of CVS must be
51     specifies as a single parameter, with no separation between the
52     option letter and the argument characters. For example:
54     cvs log -r rev-1::rev-2 # invalid
55     cvs log -rrev1::rev2 # correct
57     Meta-CVS accepts either syntax, but it was generating the first form
58     when calling CVS. Now, *all* one-letter options that have an argument
59     are formatted in the second manner.
61 kaz Bugfix: one more waitpid() issue was fixed; on fast machines, under
62     Linux, it was observed that from time to time Meta-CVS would get
63     a -1/ECHILD when waiting for the CVS process.
65 kaz Release 1.0.4, 2003-02-20:
67     Fix remaining occurences of the CVS ``No child processes'' abort
68     problem, affecting the list-branches command, merge command
69     and the -r option of the filt command.
71     Release 1.0.3, 2003-02-12:
73     ! THIS RELEASE IS WITHDRAWN. It was accidentally created from the
74     ! experimental main trunk of the Meta-CVS codebase, rather than
75     ! the 1.0 branch. But 1.0.4 does contain all of the changes
76     ! described here.
77 kaz
78     Fix for the CVS ``No child processes'' abort problem. It turns out
79     that CLISP sets the signal handling action for the SIGCHLD signal
80     to SIG_IGN, which is inherited by child processes across the
81     fork() and execvp() calls used in our mcvs_spawn() function.
82     We correct the problem by resetting the signal handler to SIG_DFL
83     just before executing the new process image.
85 kaz New feature, --up option. The argument is a nonnegative integer value
86     (default is zero) which specifies how many sandbox nesting levels to
87     escape out of when locating the sandbox root. This helps work with
88     nested Meta-CVS sandboxes.
90 kaz Release 1.0.2, 2003-02-10:
91 kaz
92     Bugfix in waitpid logic in the C library for running external processes;
93     we were not dealing with an interrupted waitpid.
95 kaz Behavior of mcvs tag is changed: when there are no filename arguments,
96     the whole tree is tagged including the metafiles. In other words, it
97     now works like the commit command.
99 kaz Release 1.0.1, 2003-01-30:
100 kaz
101     Hard link sync optimization: update of a subset of files, commit, and
102     other operations like log and diff don't need to synchronize all
103     hard links, just the ones operated on.
105 kaz The merge and remerge commands support -k option for overriding
106     CVS keyword expansion mode.
108 kaz Fixes to getcwd error handling.
109 kaz
110     Improvement in install.sh script's logic for locating CLISP installation
111     directory.
112 kaz
113 kaz Release 1.0, 2003-01-01:
114 kaz
115 kaz NOTE: It's not possible to upgrade to this release via mcvs-upgrade,
116     because it adds some new C functions to the Lisp executable.
118 kaz Security fix: read-time evaluation was not suppressed when reading
119     structured data, like MCVS/MAP and MCVS/TYPES. This means that it
120     was possible for Alice to check in something that would execute
121     arbitrary code on Bob's computer.
123 kaz Optimization: use fork and exec to launch CVS rather than CLISP's
124     run-program function, which indirects through the shell interpreter.
125 kaz (On Cygwin, the spawnvp function is used).
126 kaz
127 kaz Performance fix: stat() was being called superfluously by the
128     hard synchronization code, twice for each file.
130 kaz Build fix: install.sh works when CLISP executable is called ``lisp.exe'',
131     which is the case under Cygwin with newer CLISP releases.
133 kaz Release 0.99, 2002-11-17:
134 kaz
135 kaz New link command for creating symbolic links.
137 kaz Global option -n (dry run---don't modify filesystem) is processed
138     internally now, not just passed to CVS.
140 kaz Failure to invoke text editor is handled.
142 kaz The -r option of filt is fixed; it has been broken since the change to the
143     new MAP format, because it was reading the raw map representation, not
144     passing it through the right conversion steps that are needed now.
146 kaz Bugfix to purge and remap commands: they were fooled by CVS-generated
147     files in the MCVS/CVS directory. Specifically, files having F- names, and a
148     the suffix ,t.
150 kaz Bugfix to add logic in directory restructuring: there was the possibility
151     of mistakingly taking a clobbered local file to be a new local version of
152     the added file, instead of replacing it. This could happen if the local
153     file had a future timestamp relative to the one coming from the repository.
155 kaz The prop command does not synchronize or write out map if no options are
156     specified.
158 kaz Help text added for move and branch commands. Help text for grab rewritten.
159 kaz
160 kaz The CVSEDITOR and VISUAL environment variables are now checked, not
161     only EDITOR.
163 kaz Release 0.98, 2002-10-13:
164 kaz
165 kaz The prop command was mistakenly reading from MAP-LOCAL and writing to MAP,
166     which could cause information loss if the two differ. It now reads from MAP
167     and writes to MAP. (The property changes propagate to MAP-LOCAL by the
168     update operation invoked by prop, as before).
170 kaz Invocation of external programs included in debug trace.
171 kaz
172 kaz The filt command does not filter F- names if they are immediately preceded by
173     the MCVS/ prefix; such occurences are clearly concrete, sandbox-relative
174     references to the actual F- links, rather than abstract references.
176 kaz The update command now supports the -C option, to fetch the repository
177     copy, throwing away local changes. It also now honors the --metaonly
178     and --nometa options.
179 kaz
180     The export command has been added, for checking out documents without creating
181     a working copy (no MCVS directory in the root of the checkout).
182 kaz
183 kaz The watch command has been added. Note that its syntax differs from that
184     of CVS.
185 kaz
186     The watchers, editors, edit, and unedit commands have been added.
187 kaz
188     A script called mcvs-upgrade is now included, and installs alongside the mcvs
189     script. This allows the Meta-CVS Lisp image to recompile and patch itself,
190     giving users of binary distributions an easy way to upgrade from source
191     code.
193 kaz 1.127 Release 0.97, 2002-10-06:
194 kaz 1.119
195     Meta-CVS now builds and runs on Microsoft Windows, under Cygwin
196     (www.cygwin.com). It still relies on hard links, which requires
197     Windows 2000 or XP, and the NTFS filesystem. It probably won't
198     work over FAT.
199 kaz 1.120
200     New --debug option for verbose output.
202     Cleaned up of error messages. Error messages don't specify prefixes like
203     ``mcvs-add:'' or ``mcvs-grab:'' any more. Rather, the error handler adds the
204     ``mcvs:'' prefix when printing the messages in a situation when the error is
205     not continuable.
206 kaz 1.119
207 kaz 1.121 Fixed bug introduced in release 0.13: mcvs add -R was adding only
208     directories, effectively ignoring arguments that are regular files.
209 kaz 1.122 The error-continuation behavior of mcvs add has been revised.
210 kaz 1.121
211 kaz 1.125 Trying to rename an object onto itself, or to move the sandbox root
212     directory are no longer silent no-ops, but produce an error.
213 kaz 1.123
214 kaz 1.124 The remap command now preserves property lists, and picks up changes
215     in executable permission.
217     The grab command now notices when a file changes from having execute
218     permission to not having execute permission.
220 kaz 1.126 Operations on the path . now work in a partial sandbox.
222 kaz 1.118 Release 0.96, 2002-09-21:
223 kaz 1.110
224     The restore command was left broken during the change to the new
225     filemap format. It is now fixed.
227 kaz 1.111 The grab command now handles execute permission bits properly.
229 kaz 1.112 Some more commands have detailed help.
231 kaz 1.113 There is now a global option -i which specifies a script to be
232 kaz 1.114 executed. This allows Meta-CVS to be scripted using Lisp. For
233     instance suppose you have the following script and call it
234     list-matching:
235 kaz 1.113
236     #!/usr/local/bin/mcvs -i
237     (in-sandbox-root-dir
238 kaz 1.114 (let ((mapping (mapping-read *mcvs-map*))
239 kaz 1.117 (test-func (eval (read-from-string (pop *args*)))))
240 kaz 1.114 (dolist (entry mapping)
241     (with-slots (path raw-plist) entry
242 kaz 1.117 (when (funcall test-func raw-plist)
243 kaz 1.114 (format t "~a~%" path))))))
245     Then to list the names of files whose "importance" property is
246     a value greater than two, run:
248     ./list-matching '(lambda (plist)
249     (let ((imp (getf plist :importance)))
250     (and imp (> imp 2))))'
251 kaz 1.117
252     WARNING: Scripting accesses the guts of Meta-CVS directly, so scripts may
253     break as Meta-CVS is maintained. There is currently no published set of
254     stable interfaces.
255 kaz 1.113
256 kaz 1.109 Release 0.95, 2002-09-16:
257 kaz 1.104
258 kaz 1.107 The install.sh script no longer uses a borrowed copy of the clisp-link script
259     or the linkkit directory; these have been removed. These materials
260     are available at every CLISP installation; install.sh now finds them
261     and uses them. Users of non-x86 machines ran into problems because of this
262     because linkkit/clisp.h contains architecture-dependent information.
263 kaz 1.104
264 kaz 1.105 A bug in mcvs filt was fixed; it wasn't handling F- names that aren't found
265     in the map.
267 kaz 1.108 A more detailed help system now exists, though it's not complete. The ``mcvs
268     help'' command acts just like ``mcvs --help'' without any arguments. If given
269     an additional parameter which specifies a Meta-CVS command, it produces more
270     detailed documentation for that comand. Help exists already for a few
271     commands.
273 kaz 1.107 The release number is being warped to 0.95, which means that Meta-CVS is now
274     in beta. It is only five updates away from a 1.0 release.
275 kaz 1.106
276 kaz 1.103 Release 0.24, 2002-09-08:
277 kaz 1.98
278 kaz 1.99 The mapping entries for both symlinks and files have extensible property
279     lists now. These are stored in the optional fourth and fifth list elements,
280     respectively of the :FILE and :SYMLINK map entries.
282     Versioning of the execute permission of files is supported, represented as
283     the :EXEC property of a :FILE mapping entry.
284 kaz 1.98
285 kaz 1.100 Some lame syntax is provided for manipulating properties:
287 kaz 1.102 mcvs prop --set foo --clear bar --remove baz main.c list.c
288 kaz 1.100
289     will set the property FOO to true, set the property BAR to false,
290     and remove the property BAZ, in the files main.c and list.c.
291     The execute permission is represented by the property EXEC.
293 kaz 1.97 Release 0.23, 2002-09-02:
294 kaz 1.95
295 kaz 1.96 Bugfix: the grab command notices edited symlinks and incorporates the
296     changes into the mapping.
298     The grab command now figures out moved symlinks. Moved symlinks are those
299     whose pathname has changed, but which continue to point to the same object
300     (which may also have been moved).
301 kaz 1.95
302 kaz 1.94 Release 0.22, 2002-08-31:
303 kaz 1.93
304     Symbolic links are now versioned objects. The format of the MAP file
305     changes to accomodate this; the new Meta-CVS will read old MAP
306     files; when it writes it will write the new format. Old Meta-CVS won't
307     read the new format.
309     When a new module is created from an existing file tree, symbolic
310     links will be recognized and added. The add command will also add
311     symbolic links. Symbolic links can be renamed and moved; this does
312     nothing with their contents. They can point outside of the sandbox
313     using relative or absolute paths.
315 kaz 1.94 TODO:
317 kaz 1.93 There doesn't exist yet a special command to create symbolic links, nor to
318     retarget them; retargetting a link can be done manually by editing MCVS/MAP
319     and updating. Retargetting a link using the ln -s command, won't
320 kaz 1.94 backpropagate to the MAP file; an update will clobber the link.
322     The grab command does not yet compute symbolic link moves; a moved symbolic
323     link is treated as a remove and add. This will be easy to fix.
325     The remap command ignores symlinks.
326 kaz 1.93
327 kaz 1.92 Release 0.21, 2002-08-04:
328 kaz 1.88
329 kaz 1.89 Syntax of grab command changed. The branch is no longer specified as an
330     argument, but using the -r command option. If no revision is specified with
331     -r, then a -A must be specified to make the grab go to the main trunk. This
332     is a safety feature, since grabbing foreign snapshots to the trunk is almost
333     always wrong, though it could be useful during backup recovery, or for fixing
334     mistakes.
336 kaz 1.91 The way operating system functions are targetted has changed. Instead of
337     relying on the ``linuxlibc6'' module provided by CLISP, Meta-CVS now
338     has its own module for calling foreign functions. This module is portable;
339     it does not depend on the layout of glibc data structures. So Meta-CVS
340     is in theory now portable to other Unixes (provided they have /dev/urandom).
342 kaz 1.87 Release 0.20, 2002-07-27:
343 kaz 1.86
344     The commit command does a true global commit when given no file or directory
345     parameters, and not given the --metaonly option. This means commiting all
346     changes in the MCVS directory, even if they are in F-files that are not
347     currently mapped.
349 kaz 1.85 Release 0.19, 2002-07-16:
350 kaz 1.81
351     When moving multiple files or directories to a subdirectory, a
352     restart is now provided to skip over bad ones and continue.
354 kaz 1.83 Grab no longer scans files if there are only added files, or only removed
355     files. There are no moves to deduce in that case.
357 kaz 1.84 Restore properly creates lost+found at the root of a partial sandbox,
358     rather than at the abstract root of the module.
360 kaz 1.83 Some other algorithmic improvements made.
361 kaz 1.82
362     The first few sections of a user guide have been written.
364 kaz 1.80 Release 0.18, 2002-07-07:
365 kaz 1.77
366 kaz 1.78 Cool new feature: checkout takes an extra argument, which specifies a
367     subdirectory of the project. Specifying a subdirectory results in a ``partial
368     sandbox'', whose root directory is the specified subdirectory of the larger
369     project. The rest of the project is ``invisible'' to that sandbox. A
370     subdirectory argument can also be given to mcvs grab, which will cause it to
371     integrate the new source tree against a subtree of the Meta-CVS project
372 kaz 1.79 rather than the entire project. The subtree doesn't have to exist; in
373     that case you get an empty sandbox. Adding files to this sandbox will cause
374     the tree to exist in the project.
375 kaz 1.78
376 kaz 1.77 Bugfix: mcvs grab was not computing moves properly over small file sets,
377     wrongly treating them as removes and adds.
379 kaz 1.76 Release 0.17, 2002-07-02:
380 kaz 1.71
381     The create command no longer takes a vendor branch. Instead the symbol
382     ``Created-by-Meta-CVS'' is used as the vendor tag to satisfy CVS.
384 kaz 1.72 The grab command no longer does useless synchronization on files that
385     are about to be deleted.
387 kaz 1.75 New purge command; does ``cvs rm'' on deleted files, that is to say, F- files
388     that have no mapping.
390     New restore command; re-enters deleted files into the mapping, under
391     the ``lost+found'' directory, using their F- names as sandbox names.
392 kaz 1.73
393 kaz 1.74 Bugfix: when a checkout bails because it is requested over top of an existing
394     working copy, it must not delete that working copy's MCVS sub directory.
396 kaz 1.70 Release 0.16, 2002-06-29:
397 kaz 1.67
398     Added new heuristics to grab command. Paths are analyzed to determine
399     move distance. Greater distances reduce the confidence in a move.
400     These rules help sort out grabs in a project where similar or
401     duplicate files are subject to parallel moves, the ambiguity being
402 kaz 1.68 resolved by favoring shorter moves. Word comparisons are case-insensitive
403     now. Common words (those that appear in many files) are ignored when
404     comparing files.
405 kaz 1.67
406 kaz 1.69 New options, --meta and --metaonly. This area of Meta-CVS is cleaned
407     up a little bit. Most reporting commands like log or diff no longer
408     operate on meta files by default; they must be explicitly told to do
409     so with --meta or --metaonly. Only the commit command implicitly includes
410     metafiles by default, and so if this is not wanted, --nometa must be
411     selected. The update command remains special; if it is given file
412     arguments, it does not include meta files. If given no arguments, it
413     does a global CVS up across the entire project.
415 kaz 1.66 Release 0.15, 2002-06-25:
416 kaz 1.61
417 kaz 1.65 Optimized a string splitting routine which is used heavily for processing
418     paths; the result is a noticeable performance improvement in some commands
419     that process large numbers of files.
420 kaz 1.61
421 kaz 1.62 Renamed ``import'' command to ``create''.
423 kaz 1.65 Bugfix: checkout and create showed errors when removing directory, due to
424     broken :postorder support in directory walking function.
425 kaz 1.63
426 kaz 1.65 Bugfix: on failure, checkout was failing to delete the MCVS directory when
427     the checkout was directed to an existing directory.
429 kaz 1.66 New feature: ``mcvs grab'' command imports third-party snapshots to a
430 kaz 1.65 branch. This is invoked in the root directory of the source tree to import.
431     It determines what files have been added and removed in the snapshot, and
432     tries to compute which removes and adds are actually moves. This is done by
433     analyzing the actual contents of the files according to a crude algorithm to
434     do fuzzy comparisons, so that even files which were modified as well as moved
435     are discovered.
436 kaz 1.64
437 kaz 1.60 Release 0.14, 2002-06-21:
438 kaz 1.59
439     Bugfix: mcvs add was broken for files that have no suffix, causing
440 kaz 1.60 the underlying cvs add to fail. This was broken in 0.7 when type
441     handling was added.
442 kaz 1.59
443 kaz 1.58 Release 0.13, 2002-06-06:
444 kaz 1.55
445     Sandbox synchronization now handles the case of two files having
446     the same timestamp. An error is signaled, with interactive resolution
447     to synchronize either way, or do nothing.
449 kaz 1.56 If a file must be deleted on update, and this cannot be done, it
450     is now a continuable error.
452     Bugfix: pass -I ! to cvs import so that it won't ignore some F- files
453     whose suffix is one of the ones cvs ignores by default.
455 kaz 1.57 New command: mcvs remap. The user can move or delete files directly without
456     going through Meta-CVS. When mcvs remap is invoked, it will hunt down the
457     moves and deletions, and reconstruct the mapping accordingly; that is,
458     it remaps the new structure. This command uses inode numbers to identify
459     files; if a file is copied and then the original is deleted, that won't
460     be recognized as a move.
462 kaz 1.53 Release 0.12, 2002-04-18:
463 kaz 1.51
464     Bugfix: remove was broken in 0.10, fixed now.
466 kaz 1.54 Bugfix: status, diff, etc. work in empty project rather than complaining
467     ``. not known to Meta-CVS''.
469 kaz 1.52 The checkout operation now can now populate an existing directory, including
470     the current working directory (mcvs co -d . modulename). Of course, the
471     target directory cannot be an existing Meta-CVS sandbox.
472     This is a useful feature, which allows sandboxes to blend with an
473     existing directory structure.
475     Checkout now uses the same function for generating the sandbox
476     structure as does update. This is now necessary, because local files
477     can be clobbered by the checkout.
479 kaz 1.50 Release 0.11, 2002-04-12:
480 kaz 1.46
481     Bugfix: when branch invokes rtag, it now takes the CVSROOT information
482     from CVS/Root and passes it via -d. This is necessary because rtag does not
483     look at a local CVS subdirectory for this information, only the
484     -d option or the environment variable.
486 kaz 1.48 Command for listing branches added (list-branches or lb). Also shows
487     what sticky tag the sandbox is updated to.
489     Command for switching branches added (switch or sw).
491     Merge detects that working copy is on non-branch tag and bails.
492 kaz 1.47
493 kaz 1.49 Absolute paths can now be specified as file arguments. These are
494     based from the root directory of the sandbox, not the actual filesystem root
495     directory.
497 kaz 1.45 Release 0.10, 2002-04-03:
498 kaz 1.44
499     Automatic merging implemented. Branch is created using branch command,
500     and merging from another branch is done using simple merge command.
501     Meta-CVS maintains the tags to keep track of what has been merged
502     from what branch to what branch.
503 kaz 1.40
504     Bugfix: checkout -d foo bar was complaining about directory bar already
505     existing, even though it should only care about foo.
507 kaz 1.41 The remove command now requires explicit -R option to recursively remove
508 kaz 1.42 a directory. It has more detailed error reporting.
509 kaz 1.41
510 kaz 1.43 The move command has better error reporting.
512 kaz 1.39 Release 0.9, 2002-03-14:
513 kaz 1.37
514     Bugfix: the .cvsignore file is now subject to tagging, status, etc,
515     (unless --nometa is specified, of course).
516 kaz 1.38
517     The mcvs filt command takes -r <revision> or -D <date> parameters.
518     This means to retrieve the MAP file as of the specified revision or
519     date and use that mapping to perform the filtering translation,
520     rather than using MAP-LOCAL.
521 kaz 1.39
522     The mcvs update command takes filename arguments now and also
523     supports the -p option.
524 kaz 1.37
525 kaz 1.36 Release 0.8, 2002-03-13:
526 kaz 1.28
527 kaz 1.29 Bug fixed in mcvs add; it was not ignoring files that are already
528     listed as :ignore in MCVS/TYPES.
530 kaz 1.34 Bug fixed in mcvs move: a target with a trailing slash is now treated
531     as a directory (if it does not already exist and is a non-directory).
533 kaz 1.30 The -d option of mcvs checkout can now be used to override the checkout
534     directory, which is normally the same as the module name.
536 kaz 1.31 The global options --version, --help, -q, -Q and -e are now supported.
538 kaz 1.33 New global options --error-continue and --error-terminate to disable
539     interactive error handling in two different ways.
541 kaz 1.32 Log level of many messages has changed; many messages have been
542     relegated to debug level.
544 kaz 1.35 The import command now creates a .cvsignore file containing the name
545     MAP-LOCAL.
547 kaz 1.24 Release 0.7, 2002-03-09:
549 kaz 1.27 The import command collects a list of the file suffixes and brings up
550     a text editor to allow the user to edit their CVS keyword expansion
551     behavior. This information is kept in a new metafile called TYPES. The
552     add command also updates TYPES; it identifies any suffixes which are new,
553     and brings up an editor. The F- files now carry suffixes, which
554     simplifies interfacing with CVS, and also allows cvswrappers to work.
556     Recursive add works (mcvs add -R ...).
558     New command line option --nometa allows metafiles to be excluded from
559     diff, tag, and other commands; without the option they are inserted
560     into the list of files to be processed.
561 kaz 1.25
562 kaz 1.27 The commit option now takes an optional list of files or directories,
563     just like tag, diff, and others.
564 kaz 1.26
565 kaz 1.23 Release 0.6, 2002-02-16:
566 kaz 1.19
567 kaz 1.27 The add operation was horribly broken in 0.5, it is fixed.
568 kaz 1.21
569 kaz 1.27 User can interactively select whether to clobber local files or leave
570     everything alone. Effects on the mapping file of a mcvs move are undone,
571     if the restructuring is rolled back, or raises a condition that leads
572     to termination.
574     Meta-CVS now keeps a new meta-file called MCVS/TYPES. This is created
575     during import, and specifies the CVS keyword expansion mode for files
576     having given suffixes, and can also tell Meta-CVS to ignore certain files
577     when importing or adding.
578 kaz 1.22
579 kaz 1.18 Release 0.5, 2002-02-10:
580 kaz 1.14
581 kaz 1.27 Much improved error handling. Filesystem rearranging code performs
582     sanity checks to prevent adds and moves from accidentally clobbering
583     local files. A rearranging gone bad can be rolled back. Effects
584     of a failed mcvs add can also be rolled back.
585 kaz 1.14
586 kaz 1.27 MAP-LOCAL is now sorted in the same way as MAP.
587 kaz 1.15
588 kaz 1.13 Release 0.4, 2002-02-04:
589 kaz 1.10
590 kaz 1.27 CVS is invoked using internal function resembling the xargs utility,
591     which ensures that multiple command lines are generated if necessary to
592     avoid surpassing the operating system limit on argument and environment
593     vector size. This is important when someone wants to diff or stat a
594     subdirectory, which requires Meta-CVS to pick out the individual files
595     at the CVS level.
597     The tag, log, status and annotate commands are now available.
599     The MAP file is sorted on F- file names now, not path names. This
600     improves merging, since files do not move within the file when
601     they are renamed.
602 kaz 1.12
603 kaz 1.5 Release 0.3, 2002-02-02:
605 kaz 1.27 Process termination done is properly in top level handler, by a nonlocal
606     exit. The program properly indicates failed termination when it exits
607     due to an error condition.
609     Corrections are made in the command line option processing. If z is an
610     option that takes an argument, and the argument is -zx, then x is
611     treated as the argument to the option. Long options arguments are
612     recognized properly, according to the --opt=arg convention. The option
613     processing is restructured. Most of the commands now take the
614     appropriate cvs command-specific options.
616     The update algorithm performs dupe checking over the map, which could
617     happen during a merge.
619     Some more bugfixing has been done to the move command. It was still not
620     handling right some cases of an unversioned file being clobbered. Also,
621     it wasn't renaming a directory containing just one file.
623     I did some performance investigation for larger file sets, and
624     ended up rewriting the code that computes filesystem restructuring
625     changes and map duplicates.
626 kaz 1.5
627 kaz 1.4 Release 0.2, 2002-01-30:
629 kaz 1.27 Changed official name from MCVS to Meta-CVS. The move command now
630     performs some filesystem tests so it does the right thing when a versioned
631     file is moved over a non-versioned file, or when a file is moved into
632     a directory not known to Meta-CVS. Factored out reading and writing of
633     map files into functions.
634 kaz 1.4
635 kaz 1.2 Release 0.1, 2002-01-28:
637 kaz 1.27 Support for mcvs diff -u added. The -R option works for mcvs add command.
638     Bug fixed in mcvs mv command; it wasn't working analogously to the Unix
639     mv command when copying a directory to an existing directory.
640 kaz 1.2
641     Release 0.0, 2002-01-27:
642 kaz 1.1
643 kaz 1.27 This is alpha software. It is not complete, and lacks documentation.
644     However, it is already usable in its present state and is being used for
645     version control by its author. If you can program in Common Lisp and would
646     like to help, take a look through the TODO file. Send me patches, ideas,
647     feature requests.

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