/[meta-cvs]/meta-cvs/F-B3689DBB46386B16F4B2331934B69223
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Revision 1.112 - (show annotations)
Sat Sep 21 18:29:44 2002 UTC (11 years, 7 months ago) by kaz
Branch: MAIN
Changes since 1.111: +2 -0 lines
*** empty log message ***
1 Release Notes for Meta-CVS
2
3 Release 0.96, 2002-09-??:
4
5 The restore command was left broken during the change to the new
6 filemap format. It is now fixed.
7
8 The grab command now handles execute permission bits properly.
9
10 Some more commands have detailed help.
11
12 Release 0.95, 2002-09-16:
13
14 The install.sh script no longer uses a borrowed copy of the clisp-link script
15 or the linkkit directory; these have been removed. These materials
16 are available at every CLISP installation; install.sh now finds them
17 and uses them. Users of non-x86 machines ran into problems because of this
18 because linkkit/clisp.h contains architecture-dependent information.
19
20 A bug in mcvs filt was fixed; it wasn't handling F- names that aren't found
21 in the map.
22
23 A more detailed help system now exists, though it's not complete. The ``mcvs
24 help'' command acts just like ``mcvs --help'' without any arguments. If given
25 an additional parameter which specifies a Meta-CVS command, it produces more
26 detailed documentation for that comand. Help exists already for a few
27 commands.
28
29 The release number is being warped to 0.95, which means that Meta-CVS is now
30 in beta. It is only five updates away from a 1.0 release.
31
32 Release 0.24, 2002-09-08:
33
34 The mapping entries for both symlinks and files have extensible property
35 lists now. These are stored in the optional fourth and fifth list elements,
36 respectively of the :FILE and :SYMLINK map entries.
37
38 Versioning of the execute permission of files is supported, represented as
39 the :EXEC property of a :FILE mapping entry.
40
41 Some lame syntax is provided for manipulating properties:
42
43 mcvs prop --set foo --clear bar --remove baz main.c list.c
44
45 will set the property FOO to true, set the property BAR to false,
46 and remove the property BAZ, in the files main.c and list.c.
47 The execute permission is represented by the property EXEC.
48
49 Release 0.23, 2002-09-02:
50
51 Bugfix: the grab command notices edited symlinks and incorporates the
52 changes into the mapping.
53
54 The grab command now figures out moved symlinks. Moved symlinks are those
55 whose pathname has changed, but which continue to point to the same object
56 (which may also have been moved).
57
58 Release 0.22, 2002-08-31:
59
60 Symbolic links are now versioned objects. The format of the MAP file
61 changes to accomodate this; the new Meta-CVS will read old MAP
62 files; when it writes it will write the new format. Old Meta-CVS won't
63 read the new format.
64
65 When a new module is created from an existing file tree, symbolic
66 links will be recognized and added. The add command will also add
67 symbolic links. Symbolic links can be renamed and moved; this does
68 nothing with their contents. They can point outside of the sandbox
69 using relative or absolute paths.
70
71 TODO:
72
73 There doesn't exist yet a special command to create symbolic links, nor to
74 retarget them; retargetting a link can be done manually by editing MCVS/MAP
75 and updating. Retargetting a link using the ln -s command, won't
76 backpropagate to the MAP file; an update will clobber the link.
77
78 The grab command does not yet compute symbolic link moves; a moved symbolic
79 link is treated as a remove and add. This will be easy to fix.
80
81 The remap command ignores symlinks.
82
83 Release 0.21, 2002-08-04:
84
85 Syntax of grab command changed. The branch is no longer specified as an
86 argument, but using the -r command option. If no revision is specified with
87 -r, then a -A must be specified to make the grab go to the main trunk. This
88 is a safety feature, since grabbing foreign snapshots to the trunk is almost
89 always wrong, though it could be useful during backup recovery, or for fixing
90 mistakes.
91
92 The way operating system functions are targetted has changed. Instead of
93 relying on the ``linuxlibc6'' module provided by CLISP, Meta-CVS now
94 has its own module for calling foreign functions. This module is portable;
95 it does not depend on the layout of glibc data structures. So Meta-CVS
96 is in theory now portable to other Unixes (provided they have /dev/urandom).
97
98 Release 0.20, 2002-07-27:
99
100 The commit command does a true global commit when given no file or directory
101 parameters, and not given the --metaonly option. This means commiting all
102 changes in the MCVS directory, even if they are in F-files that are not
103 currently mapped.
104
105 Release 0.19, 2002-07-16:
106
107 When moving multiple files or directories to a subdirectory, a
108 restart is now provided to skip over bad ones and continue.
109
110 Grab no longer scans files if there are only added files, or only removed
111 files. There are no moves to deduce in that case.
112
113 Restore properly creates lost+found at the root of a partial sandbox,
114 rather than at the abstract root of the module.
115
116 Some other algorithmic improvements made.
117
118 The first few sections of a user guide have been written.
119
120 Release 0.18, 2002-07-07:
121
122 Cool new feature: checkout takes an extra argument, which specifies a
123 subdirectory of the project. Specifying a subdirectory results in a ``partial
124 sandbox'', whose root directory is the specified subdirectory of the larger
125 project. The rest of the project is ``invisible'' to that sandbox. A
126 subdirectory argument can also be given to mcvs grab, which will cause it to
127 integrate the new source tree against a subtree of the Meta-CVS project
128 rather than the entire project. The subtree doesn't have to exist; in
129 that case you get an empty sandbox. Adding files to this sandbox will cause
130 the tree to exist in the project.
131
132 Bugfix: mcvs grab was not computing moves properly over small file sets,
133 wrongly treating them as removes and adds.
134
135 Release 0.17, 2002-07-02:
136
137 The create command no longer takes a vendor branch. Instead the symbol
138 ``Created-by-Meta-CVS'' is used as the vendor tag to satisfy CVS.
139
140 The grab command no longer does useless synchronization on files that
141 are about to be deleted.
142
143 New purge command; does ``cvs rm'' on deleted files, that is to say, F- files
144 that have no mapping.
145
146 New restore command; re-enters deleted files into the mapping, under
147 the ``lost+found'' directory, using their F- names as sandbox names.
148
149 Bugfix: when a checkout bails because it is requested over top of an existing
150 working copy, it must not delete that working copy's MCVS sub directory.
151
152 Release 0.16, 2002-06-29:
153
154 Added new heuristics to grab command. Paths are analyzed to determine
155 move distance. Greater distances reduce the confidence in a move.
156 These rules help sort out grabs in a project where similar or
157 duplicate files are subject to parallel moves, the ambiguity being
158 resolved by favoring shorter moves. Word comparisons are case-insensitive
159 now. Common words (those that appear in many files) are ignored when
160 comparing files.
161
162 New options, --meta and --metaonly. This area of Meta-CVS is cleaned
163 up a little bit. Most reporting commands like log or diff no longer
164 operate on meta files by default; they must be explicitly told to do
165 so with --meta or --metaonly. Only the commit command implicitly includes
166 metafiles by default, and so if this is not wanted, --nometa must be
167 selected. The update command remains special; if it is given file
168 arguments, it does not include meta files. If given no arguments, it
169 does a global CVS up across the entire project.
170
171 Release 0.15, 2002-06-25:
172
173 Optimized a string splitting routine which is used heavily for processing
174 paths; the result is a noticeable performance improvement in some commands
175 that process large numbers of files.
176
177 Renamed ``import'' command to ``create''.
178
179 Bugfix: checkout and create showed errors when removing directory, due to
180 broken :postorder support in directory walking function.
181
182 Bugfix: on failure, checkout was failing to delete the MCVS directory when
183 the checkout was directed to an existing directory.
184
185 New feature: ``mcvs grab'' command imports third-party snapshots to a
186 branch. This is invoked in the root directory of the source tree to import.
187 It determines what files have been added and removed in the snapshot, and
188 tries to compute which removes and adds are actually moves. This is done by
189 analyzing the actual contents of the files according to a crude algorithm to
190 do fuzzy comparisons, so that even files which were modified as well as moved
191 are discovered.
192
193 Release 0.14, 2002-06-21:
194
195 Bugfix: mcvs add was broken for files that have no suffix, causing
196 the underlying cvs add to fail. This was broken in 0.7 when type
197 handling was added.
198
199 Release 0.13, 2002-06-06:
200
201 Sandbox synchronization now handles the case of two files having
202 the same timestamp. An error is signaled, with interactive resolution
203 to synchronize either way, or do nothing.
204
205 If a file must be deleted on update, and this cannot be done, it
206 is now a continuable error.
207
208 Bugfix: pass -I ! to cvs import so that it won't ignore some F- files
209 whose suffix is one of the ones cvs ignores by default.
210
211 New command: mcvs remap. The user can move or delete files directly without
212 going through Meta-CVS. When mcvs remap is invoked, it will hunt down the
213 moves and deletions, and reconstruct the mapping accordingly; that is,
214 it remaps the new structure. This command uses inode numbers to identify
215 files; if a file is copied and then the original is deleted, that won't
216 be recognized as a move.
217
218 Release 0.12, 2002-04-18:
219
220 Bugfix: remove was broken in 0.10, fixed now.
221
222 Bugfix: status, diff, etc. work in empty project rather than complaining
223 ``. not known to Meta-CVS''.
224
225 The checkout operation now can now populate an existing directory, including
226 the current working directory (mcvs co -d . modulename). Of course, the
227 target directory cannot be an existing Meta-CVS sandbox.
228 This is a useful feature, which allows sandboxes to blend with an
229 existing directory structure.
230
231 Checkout now uses the same function for generating the sandbox
232 structure as does update. This is now necessary, because local files
233 can be clobbered by the checkout.
234
235 Release 0.11, 2002-04-12:
236
237 Bugfix: when branch invokes rtag, it now takes the CVSROOT information
238 from CVS/Root and passes it via -d. This is necessary because rtag does not
239 look at a local CVS subdirectory for this information, only the
240 -d option or the environment variable.
241
242 Command for listing branches added (list-branches or lb). Also shows
243 what sticky tag the sandbox is updated to.
244
245 Command for switching branches added (switch or sw).
246
247 Merge detects that working copy is on non-branch tag and bails.
248
249 Absolute paths can now be specified as file arguments. These are
250 based from the root directory of the sandbox, not the actual filesystem root
251 directory.
252
253 Release 0.10, 2002-04-03:
254
255 Automatic merging implemented. Branch is created using branch command,
256 and merging from another branch is done using simple merge command.
257 Meta-CVS maintains the tags to keep track of what has been merged
258 from what branch to what branch.
259
260 Bugfix: checkout -d foo bar was complaining about directory bar already
261 existing, even though it should only care about foo.
262
263 The remove command now requires explicit -R option to recursively remove
264 a directory. It has more detailed error reporting.
265
266 The move command has better error reporting.
267
268 Release 0.9, 2002-03-14:
269
270 Bugfix: the .cvsignore file is now subject to tagging, status, etc,
271 (unless --nometa is specified, of course).
272
273 The mcvs filt command takes -r <revision> or -D <date> parameters.
274 This means to retrieve the MAP file as of the specified revision or
275 date and use that mapping to perform the filtering translation,
276 rather than using MAP-LOCAL.
277
278 The mcvs update command takes filename arguments now and also
279 supports the -p option.
280
281 Release 0.8, 2002-03-13:
282
283 Bug fixed in mcvs add; it was not ignoring files that are already
284 listed as :ignore in MCVS/TYPES.
285
286 Bug fixed in mcvs move: a target with a trailing slash is now treated
287 as a directory (if it does not already exist and is a non-directory).
288
289 The -d option of mcvs checkout can now be used to override the checkout
290 directory, which is normally the same as the module name.
291
292 The global options --version, --help, -q, -Q and -e are now supported.
293
294 New global options --error-continue and --error-terminate to disable
295 interactive error handling in two different ways.
296
297 Log level of many messages has changed; many messages have been
298 relegated to debug level.
299
300 The import command now creates a .cvsignore file containing the name
301 MAP-LOCAL.
302
303 Release 0.7, 2002-03-09:
304
305 The import command collects a list of the file suffixes and brings up
306 a text editor to allow the user to edit their CVS keyword expansion
307 behavior. This information is kept in a new metafile called TYPES. The
308 add command also updates TYPES; it identifies any suffixes which are new,
309 and brings up an editor. The F- files now carry suffixes, which
310 simplifies interfacing with CVS, and also allows cvswrappers to work.
311
312 Recursive add works (mcvs add -R ...).
313
314 New command line option --nometa allows metafiles to be excluded from
315 diff, tag, and other commands; without the option they are inserted
316 into the list of files to be processed.
317
318 The commit option now takes an optional list of files or directories,
319 just like tag, diff, and others.
320
321 Release 0.6, 2002-02-16:
322
323 The add operation was horribly broken in 0.5, it is fixed.
324
325 User can interactively select whether to clobber local files or leave
326 everything alone. Effects on the mapping file of a mcvs move are undone,
327 if the restructuring is rolled back, or raises a condition that leads
328 to termination.
329
330 Meta-CVS now keeps a new meta-file called MCVS/TYPES. This is created
331 during import, and specifies the CVS keyword expansion mode for files
332 having given suffixes, and can also tell Meta-CVS to ignore certain files
333 when importing or adding.
334
335 Release 0.5, 2002-02-10:
336
337 Much improved error handling. Filesystem rearranging code performs
338 sanity checks to prevent adds and moves from accidentally clobbering
339 local files. A rearranging gone bad can be rolled back. Effects
340 of a failed mcvs add can also be rolled back.
341
342 MAP-LOCAL is now sorted in the same way as MAP.
343
344 Release 0.4, 2002-02-04:
345
346 CVS is invoked using internal function resembling the xargs utility,
347 which ensures that multiple command lines are generated if necessary to
348 avoid surpassing the operating system limit on argument and environment
349 vector size. This is important when someone wants to diff or stat a
350 subdirectory, which requires Meta-CVS to pick out the individual files
351 at the CVS level.
352
353 The tag, log, status and annotate commands are now available.
354
355 The MAP file is sorted on F- file names now, not path names. This
356 improves merging, since files do not move within the file when
357 they are renamed.
358
359 Release 0.3, 2002-02-02:
360
361 Process termination done is properly in top level handler, by a nonlocal
362 exit. The program properly indicates failed termination when it exits
363 due to an error condition.
364
365 Corrections are made in the command line option processing. If z is an
366 option that takes an argument, and the argument is -zx, then x is
367 treated as the argument to the option. Long options arguments are
368 recognized properly, according to the --opt=arg convention. The option
369 processing is restructured. Most of the commands now take the
370 appropriate cvs command-specific options.
371
372 The update algorithm performs dupe checking over the map, which could
373 happen during a merge.
374
375 Some more bugfixing has been done to the move command. It was still not
376 handling right some cases of an unversioned file being clobbered. Also,
377 it wasn't renaming a directory containing just one file.
378
379 I did some performance investigation for larger file sets, and
380 ended up rewriting the code that computes filesystem restructuring
381 changes and map duplicates.
382
383 Release 0.2, 2002-01-30:
384
385 Changed official name from MCVS to Meta-CVS. The move command now
386 performs some filesystem tests so it does the right thing when a versioned
387 file is moved over a non-versioned file, or when a file is moved into
388 a directory not known to Meta-CVS. Factored out reading and writing of
389 map files into functions.
390
391 Release 0.1, 2002-01-28:
392
393 Support for mcvs diff -u added. The -R option works for mcvs add command.
394 Bug fixed in mcvs mv command; it wasn't working analogously to the Unix
395 mv command when copying a directory to an existing directory.
396
397 Release 0.0, 2002-01-27:
398
399 This is alpha software. It is not complete, and lacks documentation.
400 However, it is already usable in its present state and is being used for
401 version control by its author. If you can program in Common Lisp and would
402 like to help, take a look through the TODO file. Send me patches, ideas,
403 feature requests.

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