/[meta-cvs]/meta-cvs/F-B3689DBB46386B16F4B2331934B69223
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Revision 1.127.2.46 - (hide annotations)
Sun Apr 13 06:22:43 2003 UTC (11 years ago) by kaz
Branch: mcvs-1-0-branch
Changes since 1.127.2.45: +14 -0 lines
Revamped the synchronization logic. Synchronization now happens
in a specific direction.  For example, if we are doing a diff,
we just need to push changes from the tree to the MCVS directory,
not the other way around. Or: before an update or commit, we push from
the tree to MCVS, then after the update, in the other direction.

* code/update.lisp (mcvs-update): The before update is done
in the :left direction only, and the after update in the :right.

* code/move.lisp (mcvs-move): The just-in-case sync is done
in the :left direction only.

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

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

* code/add.lisp (mcvs-add): Get rid of mapping-synchronize call;
it's completely unnecessary, since the new files are not even
in the MAP-LOCAL, and the add logic explicitly links them into
the MCVS directory.

* code/generic.lisp (mcvs-generic): New keyword parameter,
need-sync-before. Before-synchronization done in :left direction,
after-synchronization in :right direction. Before-synchronization
is now not done by default; need-sync-before must be specified.
(mcvs-commit-wrapper): Specify before and after sync.
(mcvs-diff-wrapper, mcvs-status-wrapper,
mcvs-edit-wrapper): Explicitly specify before sync.
(mcvs-tag-wrapper, mcvs-annotate-wrapper): Implicitly specify no sync.
(mcvs-unedit-wrapper): Add before sync.

* code/sync.lisp (synchronize-files):  New key parameter :direction,
values can be :left, :right or :either. Default is :either.
If the value is :left or :right, then a sync is done only in that
direction, otherwise the value :no-sync is returned.
Behavior change: if the left file is missing (F- file in MCVS
directory) it is not re-created, but rather :no-sync is returned.
Also, if both files exist, have the same timestamp, and are
distinct objects, if the direction is :left or :right, then
the appropriate restart is automatically chosen. So this will
do the right thing on filesystems where link() is performed by
copying, without bothering the user with the error.

* code/mapping.lisp (mapping-synchronize): New :direction key
parameter, passed down to synchronize-filed. The new :no-sync
return value from synchronize-files is handled.
(mapping-update): Select the :right direction for synchronizing
moves, adds or rollbacks.
1 kaz 1.115 Release Notes for Meta-CVS
2 kaz 1.1
3 kaz 1.127.2.44 Release 1.0.6, 2003-0?-??:
4    
5     The create command detects the existence of text editor backup files (or
6     other junk) in the MCVS directory after the editor is invoked on the
7     TYPES file. The user is prompted regarding their removal. If these files are
8     not removed, cvs import will bring them into the repository.
9    
10 kaz 1.127.2.45 When Meta-CVS has to split a large CVS command into two or more
11     invocations with shorter argument lists, it now does not stop when one of
12     these invocations is unsuccessful; it does all of them, and combines
13     their termination indications by a logical AND. There was a bug in this
14     logic also which caused, upon termination failure, a cvs command to be
15     repeated for the same list of files.
16    
17 kaz 1.127.2.46 Synchronization logic has been revamped. Unnecessary synchronizations
18     have been removed, which will make some commands run faster.
19     Synchronizations now have specific directions; for instance before
20     a CVS commit or update, changes are pushed from the directory tree to the MCVS
21     directory only, and after the CVS operation, in the reverse direction only.
22    
23     Meta-CVS will no longer re-create missing F- files by linking from the
24     directory tree. Doing this causes two problems. One is that if a user
25     manually removes a F- file and do ``mcvs up'', she wants CVS to fetch a clean
26     copy and push it into the tree. She does not want the file to be restored
27     from the tree prior to the CVS update. Secondly, sometimes CVS itself
28     removes files. If we re-create the files, CVS will consider them to
29     be ``in the way''.
30    
31 kaz 1.127.2.43 Release 1.0.5, 2003-02-25:
32 kaz 1.127.2.41
33     Bugfix: some one-argument command line options of CVS must be
34     specifies as a single parameter, with no separation between the
35     option letter and the argument characters. For example:
36    
37     cvs log -r rev-1::rev-2 # invalid
38     cvs log -rrev1::rev2 # correct
39    
40     Meta-CVS accepts either syntax, but it was generating the first form
41     when calling CVS. Now, *all* one-letter options that have an argument
42     are formatted in the second manner.
43    
44 kaz 1.127.2.42 Bugfix: one more waitpid() issue was fixed; on fast machines, under
45     Linux, it was observed that from time to time Meta-CVS would get
46     a -1/ECHILD when waiting for the CVS process.
47    
48 kaz 1.127.2.40 Release 1.0.4, 2003-02-20:
49    
50     Fix remaining occurences of the CVS ``No child processes'' abort
51     problem, affecting the list-branches command, merge command
52     and the -r option of the filt command.
53    
54     Release 1.0.3, 2003-02-12:
55    
56     ! THIS RELEASE IS WITHDRAWN. It was accidentally created from the
57     ! experimental main trunk of the Meta-CVS codebase, rather than
58     ! the 1.0 branch. But 1.0.4 does contain all of the changes
59     ! described here.
60 kaz 1.127.2.37
61     Fix for the CVS ``No child processes'' abort problem. It turns out
62     that CLISP sets the signal handling action for the SIGCHLD signal
63     to SIG_IGN, which is inherited by child processes across the
64     fork() and execvp() calls used in our mcvs_spawn() function.
65     We correct the problem by resetting the signal handler to SIG_DFL
66     just before executing the new process image.
67    
68 kaz 1.127.2.39 New feature, --up option. The argument is a nonnegative integer value
69     (default is zero) which specifies how many sandbox nesting levels to
70     escape out of when locating the sandbox root. This helps work with
71     nested Meta-CVS sandboxes.
72    
73 kaz 1.127.2.40 Release 1.0.2, 2003-02-10:
74 kaz 1.127.2.34
75     Bugfix in waitpid logic in the C library for running external processes;
76     we were not dealing with an interrupted waitpid.
77    
78 kaz 1.127.2.35 Behavior of mcvs tag is changed: when there are no filename arguments,
79     the whole tree is tagged including the metafiles. In other words, it
80     now works like the commit command.
81    
82 kaz 1.127.2.33 Release 1.0.1, 2003-01-30:
83 kaz 1.127.2.30
84     Hard link sync optimization: update of a subset of files, commit, and
85     other operations like log and diff don't need to synchronize all
86     hard links, just the ones operated on.
87    
88 kaz 1.127.2.31 The merge and remerge commands support -k option for overriding
89     CVS keyword expansion mode.
90    
91 kaz 1.127.2.32 Fixes to getcwd error handling.
92 kaz 1.127.2.33
93     Improvement in install.sh script's logic for locating CLISP installation
94     directory.
95 kaz 1.127.2.32
96 kaz 1.127.2.29 Release 1.0, 2003-01-01:
97 kaz 1.127.2.23
98 kaz 1.127.2.27 NOTE: It's not possible to upgrade to this release via mcvs-upgrade,
99     because it adds some new C functions to the Lisp executable.
100    
101 kaz 1.127.2.23 Security fix: read-time evaluation was not suppressed when reading
102     structured data, like MCVS/MAP and MCVS/TYPES. This means that it
103     was possible for Alice to check in something that would execute
104     arbitrary code on Bob's computer.
105    
106 kaz 1.127.2.24 Optimization: use fork and exec to launch CVS rather than CLISP's
107     run-program function, which indirects through the shell interpreter.
108 kaz 1.127.2.29 (On Cygwin, the spawnvp function is used).
109 kaz 1.127.2.24
110 kaz 1.127.2.25 Performance fix: stat() was being called superfluously by the
111     hard synchronization code, twice for each file.
112    
113 kaz 1.127.2.26 Build fix: install.sh works when CLISP executable is called ``lisp.exe'',
114     which is the case under Cygwin with newer CLISP releases.
115    
116 kaz 1.127.2.22 Release 0.99, 2002-11-17:
117 kaz 1.127.2.11
118 kaz 1.127.2.16 New link command for creating symbolic links.
119    
120 kaz 1.127.2.20 Global option -n (dry run---don't modify filesystem) is processed
121     internally now, not just passed to CVS.
122    
123 kaz 1.127.2.11 Failure to invoke text editor is handled.
124    
125 kaz 1.127.2.12 The -r option of filt is fixed; it has been broken since the change to the
126     new MAP format, because it was reading the raw map representation, not
127     passing it through the right conversion steps that are needed now.
128    
129 kaz 1.127.2.14 Bugfix to purge and remap commands: they were fooled by CVS-generated
130     files in the MCVS/CVS directory. Specifically, files having F- names, and a
131     the suffix ,t.
132    
133 kaz 1.127.2.17 Bugfix to add logic in directory restructuring: there was the possibility
134     of mistakingly taking a clobbered local file to be a new local version of
135     the added file, instead of replacing it. This could happen if the local
136     file had a future timestamp relative to the one coming from the repository.
137    
138 kaz 1.127.2.18 The prop command does not synchronize or write out map if no options are
139     specified.
140    
141 kaz 1.127.2.19 Help text added for move and branch commands. Help text for grab rewritten.
142 kaz 1.127.2.13
143 kaz 1.127.2.21 The CVSEDITOR and VISUAL environment variables are now checked, not
144     only EDITOR.
145    
146 kaz 1.127.2.10 Release 0.98, 2002-10-13:
147 kaz 1.127.2.1
148 kaz 1.127.2.8 The prop command was mistakenly reading from MAP-LOCAL and writing to MAP,
149     which could cause information loss if the two differ. It now reads from MAP
150     and writes to MAP. (The property changes propagate to MAP-LOCAL by the
151     update operation invoked by prop, as before).
152    
153 kaz 1.127.2.7 Invocation of external programs included in debug trace.
154 kaz 1.127.2.1
155 kaz 1.127.2.2 The filt command does not filter F- names if they are immediately preceded by
156     the MCVS/ prefix; such occurences are clearly concrete, sandbox-relative
157     references to the actual F- links, rather than abstract references.
158    
159 kaz 1.127.2.3 The update command now supports the -C option, to fetch the repository
160     copy, throwing away local changes. It also now honors the --metaonly
161     and --nometa options.
162 kaz 1.127.2.4
163     The export command has been added, for checking out documents without creating
164     a working copy (no MCVS directory in the root of the checkout).
165 kaz 1.127.2.5
166 kaz 1.127.2.7 The watch command has been added. Note that its syntax differs from that
167     of CVS.
168 kaz 1.127.2.6
169     The watchers, editors, edit, and unedit commands have been added.
170 kaz 1.127.2.9
171     A script called mcvs-upgrade is now included, and installs alongside the mcvs
172     script. This allows the Meta-CVS Lisp image to recompile and patch itself,
173     giving users of binary distributions an easy way to upgrade from source
174     code.
175    
176 kaz 1.127 Release 0.97, 2002-10-06:
177 kaz 1.119
178     Meta-CVS now builds and runs on Microsoft Windows, under Cygwin
179     (www.cygwin.com). It still relies on hard links, which requires
180     Windows 2000 or XP, and the NTFS filesystem. It probably won't
181     work over FAT.
182 kaz 1.120
183     New --debug option for verbose output.
184    
185     Cleaned up of error messages. Error messages don't specify prefixes like
186     ``mcvs-add:'' or ``mcvs-grab:'' any more. Rather, the error handler adds the
187     ``mcvs:'' prefix when printing the messages in a situation when the error is
188     not continuable.
189 kaz 1.119
190 kaz 1.121 Fixed bug introduced in release 0.13: mcvs add -R was adding only
191     directories, effectively ignoring arguments that are regular files.
192 kaz 1.122 The error-continuation behavior of mcvs add has been revised.
193 kaz 1.121
194 kaz 1.125 Trying to rename an object onto itself, or to move the sandbox root
195     directory are no longer silent no-ops, but produce an error.
196 kaz 1.123
197 kaz 1.124 The remap command now preserves property lists, and picks up changes
198     in executable permission.
199    
200     The grab command now notices when a file changes from having execute
201     permission to not having execute permission.
202    
203 kaz 1.126 Operations on the path . now work in a partial sandbox.
204    
205 kaz 1.118 Release 0.96, 2002-09-21:
206 kaz 1.110
207     The restore command was left broken during the change to the new
208     filemap format. It is now fixed.
209    
210 kaz 1.111 The grab command now handles execute permission bits properly.
211    
212 kaz 1.112 Some more commands have detailed help.
213    
214 kaz 1.113 There is now a global option -i which specifies a script to be
215 kaz 1.114 executed. This allows Meta-CVS to be scripted using Lisp. For
216     instance suppose you have the following script and call it
217     list-matching:
218 kaz 1.113
219     #!/usr/local/bin/mcvs -i
220     (in-sandbox-root-dir
221 kaz 1.114 (let ((mapping (mapping-read *mcvs-map*))
222 kaz 1.117 (test-func (eval (read-from-string (pop *args*)))))
223 kaz 1.114 (dolist (entry mapping)
224     (with-slots (path raw-plist) entry
225 kaz 1.117 (when (funcall test-func raw-plist)
226 kaz 1.114 (format t "~a~%" path))))))
227    
228     Then to list the names of files whose "importance" property is
229     a value greater than two, run:
230    
231     ./list-matching '(lambda (plist)
232     (let ((imp (getf plist :importance)))
233     (and imp (> imp 2))))'
234 kaz 1.117
235     WARNING: Scripting accesses the guts of Meta-CVS directly, so scripts may
236     break as Meta-CVS is maintained. There is currently no published set of
237     stable interfaces.
238 kaz 1.113
239 kaz 1.109 Release 0.95, 2002-09-16:
240 kaz 1.104
241 kaz 1.107 The install.sh script no longer uses a borrowed copy of the clisp-link script
242     or the linkkit directory; these have been removed. These materials
243     are available at every CLISP installation; install.sh now finds them
244     and uses them. Users of non-x86 machines ran into problems because of this
245     because linkkit/clisp.h contains architecture-dependent information.
246 kaz 1.104
247 kaz 1.105 A bug in mcvs filt was fixed; it wasn't handling F- names that aren't found
248     in the map.
249    
250 kaz 1.108 A more detailed help system now exists, though it's not complete. The ``mcvs
251     help'' command acts just like ``mcvs --help'' without any arguments. If given
252     an additional parameter which specifies a Meta-CVS command, it produces more
253     detailed documentation for that comand. Help exists already for a few
254     commands.
255    
256 kaz 1.107 The release number is being warped to 0.95, which means that Meta-CVS is now
257     in beta. It is only five updates away from a 1.0 release.
258 kaz 1.106
259 kaz 1.103 Release 0.24, 2002-09-08:
260 kaz 1.98
261 kaz 1.99 The mapping entries for both symlinks and files have extensible property
262     lists now. These are stored in the optional fourth and fifth list elements,
263     respectively of the :FILE and :SYMLINK map entries.
264    
265     Versioning of the execute permission of files is supported, represented as
266     the :EXEC property of a :FILE mapping entry.
267 kaz 1.98
268 kaz 1.100 Some lame syntax is provided for manipulating properties:
269    
270 kaz 1.102 mcvs prop --set foo --clear bar --remove baz main.c list.c
271 kaz 1.100
272     will set the property FOO to true, set the property BAR to false,
273     and remove the property BAZ, in the files main.c and list.c.
274     The execute permission is represented by the property EXEC.
275    
276 kaz 1.97 Release 0.23, 2002-09-02:
277 kaz 1.95
278 kaz 1.96 Bugfix: the grab command notices edited symlinks and incorporates the
279     changes into the mapping.
280    
281     The grab command now figures out moved symlinks. Moved symlinks are those
282     whose pathname has changed, but which continue to point to the same object
283     (which may also have been moved).
284 kaz 1.95
285 kaz 1.94 Release 0.22, 2002-08-31:
286 kaz 1.93
287     Symbolic links are now versioned objects. The format of the MAP file
288     changes to accomodate this; the new Meta-CVS will read old MAP
289     files; when it writes it will write the new format. Old Meta-CVS won't
290     read the new format.
291    
292     When a new module is created from an existing file tree, symbolic
293     links will be recognized and added. The add command will also add
294     symbolic links. Symbolic links can be renamed and moved; this does
295     nothing with their contents. They can point outside of the sandbox
296     using relative or absolute paths.
297    
298 kaz 1.94 TODO:
299    
300 kaz 1.93 There doesn't exist yet a special command to create symbolic links, nor to
301     retarget them; retargetting a link can be done manually by editing MCVS/MAP
302     and updating. Retargetting a link using the ln -s command, won't
303 kaz 1.94 backpropagate to the MAP file; an update will clobber the link.
304    
305     The grab command does not yet compute symbolic link moves; a moved symbolic
306     link is treated as a remove and add. This will be easy to fix.
307    
308     The remap command ignores symlinks.
309 kaz 1.93
310 kaz 1.92 Release 0.21, 2002-08-04:
311 kaz 1.88
312 kaz 1.89 Syntax of grab command changed. The branch is no longer specified as an
313     argument, but using the -r command option. If no revision is specified with
314     -r, then a -A must be specified to make the grab go to the main trunk. This
315     is a safety feature, since grabbing foreign snapshots to the trunk is almost
316     always wrong, though it could be useful during backup recovery, or for fixing
317     mistakes.
318    
319 kaz 1.91 The way operating system functions are targetted has changed. Instead of
320     relying on the ``linuxlibc6'' module provided by CLISP, Meta-CVS now
321     has its own module for calling foreign functions. This module is portable;
322     it does not depend on the layout of glibc data structures. So Meta-CVS
323     is in theory now portable to other Unixes (provided they have /dev/urandom).
324    
325 kaz 1.87 Release 0.20, 2002-07-27:
326 kaz 1.86
327     The commit command does a true global commit when given no file or directory
328     parameters, and not given the --metaonly option. This means commiting all
329     changes in the MCVS directory, even if they are in F-files that are not
330     currently mapped.
331    
332 kaz 1.85 Release 0.19, 2002-07-16:
333 kaz 1.81
334     When moving multiple files or directories to a subdirectory, a
335     restart is now provided to skip over bad ones and continue.
336    
337 kaz 1.83 Grab no longer scans files if there are only added files, or only removed
338     files. There are no moves to deduce in that case.
339    
340 kaz 1.84 Restore properly creates lost+found at the root of a partial sandbox,
341     rather than at the abstract root of the module.
342    
343 kaz 1.83 Some other algorithmic improvements made.
344 kaz 1.82
345     The first few sections of a user guide have been written.
346    
347 kaz 1.80 Release 0.18, 2002-07-07:
348 kaz 1.77
349 kaz 1.78 Cool new feature: checkout takes an extra argument, which specifies a
350     subdirectory of the project. Specifying a subdirectory results in a ``partial
351     sandbox'', whose root directory is the specified subdirectory of the larger
352     project. The rest of the project is ``invisible'' to that sandbox. A
353     subdirectory argument can also be given to mcvs grab, which will cause it to
354     integrate the new source tree against a subtree of the Meta-CVS project
355 kaz 1.79 rather than the entire project. The subtree doesn't have to exist; in
356     that case you get an empty sandbox. Adding files to this sandbox will cause
357     the tree to exist in the project.
358 kaz 1.78
359 kaz 1.77 Bugfix: mcvs grab was not computing moves properly over small file sets,
360     wrongly treating them as removes and adds.
361    
362 kaz 1.76 Release 0.17, 2002-07-02:
363 kaz 1.71
364     The create command no longer takes a vendor branch. Instead the symbol
365     ``Created-by-Meta-CVS'' is used as the vendor tag to satisfy CVS.
366    
367 kaz 1.72 The grab command no longer does useless synchronization on files that
368     are about to be deleted.
369    
370 kaz 1.75 New purge command; does ``cvs rm'' on deleted files, that is to say, F- files
371     that have no mapping.
372    
373     New restore command; re-enters deleted files into the mapping, under
374     the ``lost+found'' directory, using their F- names as sandbox names.
375 kaz 1.73
376 kaz 1.74 Bugfix: when a checkout bails because it is requested over top of an existing
377     working copy, it must not delete that working copy's MCVS sub directory.
378    
379 kaz 1.70 Release 0.16, 2002-06-29:
380 kaz 1.67
381     Added new heuristics to grab command. Paths are analyzed to determine
382     move distance. Greater distances reduce the confidence in a move.
383     These rules help sort out grabs in a project where similar or
384     duplicate files are subject to parallel moves, the ambiguity being
385 kaz 1.68 resolved by favoring shorter moves. Word comparisons are case-insensitive
386     now. Common words (those that appear in many files) are ignored when
387     comparing files.
388 kaz 1.67
389 kaz 1.69 New options, --meta and --metaonly. This area of Meta-CVS is cleaned
390     up a little bit. Most reporting commands like log or diff no longer
391     operate on meta files by default; they must be explicitly told to do
392     so with --meta or --metaonly. Only the commit command implicitly includes
393     metafiles by default, and so if this is not wanted, --nometa must be
394     selected. The update command remains special; if it is given file
395     arguments, it does not include meta files. If given no arguments, it
396     does a global CVS up across the entire project.
397    
398 kaz 1.66 Release 0.15, 2002-06-25:
399 kaz 1.61
400 kaz 1.65 Optimized a string splitting routine which is used heavily for processing
401     paths; the result is a noticeable performance improvement in some commands
402     that process large numbers of files.
403 kaz 1.61
404 kaz 1.62 Renamed ``import'' command to ``create''.
405    
406 kaz 1.65 Bugfix: checkout and create showed errors when removing directory, due to
407     broken :postorder support in directory walking function.
408 kaz 1.63
409 kaz 1.65 Bugfix: on failure, checkout was failing to delete the MCVS directory when
410     the checkout was directed to an existing directory.
411    
412 kaz 1.66 New feature: ``mcvs grab'' command imports third-party snapshots to a
413 kaz 1.65 branch. This is invoked in the root directory of the source tree to import.
414     It determines what files have been added and removed in the snapshot, and
415     tries to compute which removes and adds are actually moves. This is done by
416     analyzing the actual contents of the files according to a crude algorithm to
417     do fuzzy comparisons, so that even files which were modified as well as moved
418     are discovered.
419 kaz 1.64
420 kaz 1.60 Release 0.14, 2002-06-21:
421 kaz 1.59
422     Bugfix: mcvs add was broken for files that have no suffix, causing
423 kaz 1.60 the underlying cvs add to fail. This was broken in 0.7 when type
424     handling was added.
425 kaz 1.59
426 kaz 1.58 Release 0.13, 2002-06-06:
427 kaz 1.55
428     Sandbox synchronization now handles the case of two files having
429     the same timestamp. An error is signaled, with interactive resolution
430     to synchronize either way, or do nothing.
431    
432 kaz 1.56 If a file must be deleted on update, and this cannot be done, it
433     is now a continuable error.
434    
435     Bugfix: pass -I ! to cvs import so that it won't ignore some F- files
436     whose suffix is one of the ones cvs ignores by default.
437    
438 kaz 1.57 New command: mcvs remap. The user can move or delete files directly without
439     going through Meta-CVS. When mcvs remap is invoked, it will hunt down the
440     moves and deletions, and reconstruct the mapping accordingly; that is,
441     it remaps the new structure. This command uses inode numbers to identify
442     files; if a file is copied and then the original is deleted, that won't
443     be recognized as a move.
444    
445 kaz 1.53 Release 0.12, 2002-04-18:
446 kaz 1.51
447     Bugfix: remove was broken in 0.10, fixed now.
448    
449 kaz 1.54 Bugfix: status, diff, etc. work in empty project rather than complaining
450     ``. not known to Meta-CVS''.
451    
452 kaz 1.52 The checkout operation now can now populate an existing directory, including
453     the current working directory (mcvs co -d . modulename). Of course, the
454     target directory cannot be an existing Meta-CVS sandbox.
455     This is a useful feature, which allows sandboxes to blend with an
456     existing directory structure.
457    
458     Checkout now uses the same function for generating the sandbox
459     structure as does update. This is now necessary, because local files
460     can be clobbered by the checkout.
461    
462 kaz 1.50 Release 0.11, 2002-04-12:
463 kaz 1.46
464     Bugfix: when branch invokes rtag, it now takes the CVSROOT information
465     from CVS/Root and passes it via -d. This is necessary because rtag does not
466     look at a local CVS subdirectory for this information, only the
467     -d option or the environment variable.
468    
469 kaz 1.48 Command for listing branches added (list-branches or lb). Also shows
470     what sticky tag the sandbox is updated to.
471    
472     Command for switching branches added (switch or sw).
473    
474     Merge detects that working copy is on non-branch tag and bails.
475 kaz 1.47
476 kaz 1.49 Absolute paths can now be specified as file arguments. These are
477     based from the root directory of the sandbox, not the actual filesystem root
478     directory.
479    
480 kaz 1.45 Release 0.10, 2002-04-03:
481 kaz 1.44
482     Automatic merging implemented. Branch is created using branch command,
483     and merging from another branch is done using simple merge command.
484     Meta-CVS maintains the tags to keep track of what has been merged
485     from what branch to what branch.
486 kaz 1.40
487     Bugfix: checkout -d foo bar was complaining about directory bar already
488     existing, even though it should only care about foo.
489    
490 kaz 1.41 The remove command now requires explicit -R option to recursively remove
491 kaz 1.42 a directory. It has more detailed error reporting.
492 kaz 1.41
493 kaz 1.43 The move command has better error reporting.
494    
495 kaz 1.39 Release 0.9, 2002-03-14:
496 kaz 1.37
497     Bugfix: the .cvsignore file is now subject to tagging, status, etc,
498     (unless --nometa is specified, of course).
499 kaz 1.38
500     The mcvs filt command takes -r <revision> or -D <date> parameters.
501     This means to retrieve the MAP file as of the specified revision or
502     date and use that mapping to perform the filtering translation,
503     rather than using MAP-LOCAL.
504 kaz 1.39
505     The mcvs update command takes filename arguments now and also
506     supports the -p option.
507 kaz 1.37
508 kaz 1.36 Release 0.8, 2002-03-13:
509 kaz 1.28
510 kaz 1.29 Bug fixed in mcvs add; it was not ignoring files that are already
511     listed as :ignore in MCVS/TYPES.
512    
513 kaz 1.34 Bug fixed in mcvs move: a target with a trailing slash is now treated
514     as a directory (if it does not already exist and is a non-directory).
515    
516 kaz 1.30 The -d option of mcvs checkout can now be used to override the checkout
517     directory, which is normally the same as the module name.
518    
519 kaz 1.31 The global options --version, --help, -q, -Q and -e are now supported.
520    
521 kaz 1.33 New global options --error-continue and --error-terminate to disable
522     interactive error handling in two different ways.
523    
524 kaz 1.32 Log level of many messages has changed; many messages have been
525     relegated to debug level.
526    
527 kaz 1.35 The import command now creates a .cvsignore file containing the name
528     MAP-LOCAL.
529    
530 kaz 1.24 Release 0.7, 2002-03-09:
531    
532 kaz 1.27 The import command collects a list of the file suffixes and brings up
533     a text editor to allow the user to edit their CVS keyword expansion
534     behavior. This information is kept in a new metafile called TYPES. The
535     add command also updates TYPES; it identifies any suffixes which are new,
536     and brings up an editor. The F- files now carry suffixes, which
537     simplifies interfacing with CVS, and also allows cvswrappers to work.
538    
539     Recursive add works (mcvs add -R ...).
540    
541     New command line option --nometa allows metafiles to be excluded from
542     diff, tag, and other commands; without the option they are inserted
543     into the list of files to be processed.
544 kaz 1.25
545 kaz 1.27 The commit option now takes an optional list of files or directories,
546     just like tag, diff, and others.
547 kaz 1.26
548 kaz 1.23 Release 0.6, 2002-02-16:
549 kaz 1.19
550 kaz 1.27 The add operation was horribly broken in 0.5, it is fixed.
551 kaz 1.21
552 kaz 1.27 User can interactively select whether to clobber local files or leave
553     everything alone. Effects on the mapping file of a mcvs move are undone,
554     if the restructuring is rolled back, or raises a condition that leads
555     to termination.
556    
557     Meta-CVS now keeps a new meta-file called MCVS/TYPES. This is created
558     during import, and specifies the CVS keyword expansion mode for files
559     having given suffixes, and can also tell Meta-CVS to ignore certain files
560     when importing or adding.
561 kaz 1.22
562 kaz 1.18 Release 0.5, 2002-02-10:
563 kaz 1.14
564 kaz 1.27 Much improved error handling. Filesystem rearranging code performs
565     sanity checks to prevent adds and moves from accidentally clobbering
566     local files. A rearranging gone bad can be rolled back. Effects
567     of a failed mcvs add can also be rolled back.
568 kaz 1.14
569 kaz 1.27 MAP-LOCAL is now sorted in the same way as MAP.
570 kaz 1.15
571 kaz 1.13 Release 0.4, 2002-02-04:
572 kaz 1.10
573 kaz 1.27 CVS is invoked using internal function resembling the xargs utility,
574     which ensures that multiple command lines are generated if necessary to
575     avoid surpassing the operating system limit on argument and environment
576     vector size. This is important when someone wants to diff or stat a
577     subdirectory, which requires Meta-CVS to pick out the individual files
578     at the CVS level.
579    
580     The tag, log, status and annotate commands are now available.
581    
582     The MAP file is sorted on F- file names now, not path names. This
583     improves merging, since files do not move within the file when
584     they are renamed.
585 kaz 1.12
586 kaz 1.5 Release 0.3, 2002-02-02:
587    
588 kaz 1.27 Process termination done is properly in top level handler, by a nonlocal
589     exit. The program properly indicates failed termination when it exits
590     due to an error condition.
591    
592     Corrections are made in the command line option processing. If z is an
593     option that takes an argument, and the argument is -zx, then x is
594     treated as the argument to the option. Long options arguments are
595     recognized properly, according to the --opt=arg convention. The option
596     processing is restructured. Most of the commands now take the
597     appropriate cvs command-specific options.
598    
599     The update algorithm performs dupe checking over the map, which could
600     happen during a merge.
601    
602     Some more bugfixing has been done to the move command. It was still not
603     handling right some cases of an unversioned file being clobbered. Also,
604     it wasn't renaming a directory containing just one file.
605    
606     I did some performance investigation for larger file sets, and
607     ended up rewriting the code that computes filesystem restructuring
608     changes and map duplicates.
609 kaz 1.5
610 kaz 1.4 Release 0.2, 2002-01-30:
611    
612 kaz 1.27 Changed official name from MCVS to Meta-CVS. The move command now
613     performs some filesystem tests so it does the right thing when a versioned
614     file is moved over a non-versioned file, or when a file is moved into
615     a directory not known to Meta-CVS. Factored out reading and writing of
616     map files into functions.
617 kaz 1.4
618 kaz 1.2 Release 0.1, 2002-01-28:
619    
620 kaz 1.27 Support for mcvs diff -u added. The -R option works for mcvs add command.
621     Bug fixed in mcvs mv command; it wasn't working analogously to the Unix
622     mv command when copying a directory to an existing directory.
623 kaz 1.2
624     Release 0.0, 2002-01-27:
625 kaz 1.1
626 kaz 1.27 This is alpha software. It is not complete, and lacks documentation.
627     However, it is already usable in its present state and is being used for
628     version control by its author. If you can program in Common Lisp and would
629     like to help, take a look through the TODO file. Send me patches, ideas,
630     feature requests.

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