/[meta-cvs]/meta-cvs/F-B3689DBB46386B16F4B2331934B69223
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Revision 1.102 - (show annotations)
Sun Sep 8 02:51:18 2002 UTC (11 years, 7 months ago) by kaz
Branch: MAIN
Changes since 1.101: +2 -3 lines
Release 0.24.
1 Release Notes for Meta-CVS
2
3 Release 0.24, 2002-09-07:
4
5 The mapping entries for both symlinks and files have extensible property
6 lists now. These are stored in the optional fourth and fifth list elements,
7 respectively of the :FILE and :SYMLINK map entries.
8
9 Versioning of the execute permission of files is supported, represented as
10 the :EXEC property of a :FILE mapping entry.
11
12 Some lame syntax is provided for manipulating properties:
13
14 mcvs prop --set foo --clear bar --remove baz main.c list.c
15
16 will set the property FOO to true, set the property BAR to false,
17 and remove the property BAZ, in the files main.c and list.c.
18 The execute permission is represented by the property EXEC.
19
20 Release 0.23, 2002-09-02:
21
22 Bugfix: the grab command notices edited symlinks and incorporates the
23 changes into the mapping.
24
25 The grab command now figures out moved symlinks. Moved symlinks are those
26 whose pathname has changed, but which continue to point to the same object
27 (which may also have been moved).
28
29 Release 0.22, 2002-08-31:
30
31 Symbolic links are now versioned objects. The format of the MAP file
32 changes to accomodate this; the new Meta-CVS will read old MAP
33 files; when it writes it will write the new format. Old Meta-CVS won't
34 read the new format.
35
36 When a new module is created from an existing file tree, symbolic
37 links will be recognized and added. The add command will also add
38 symbolic links. Symbolic links can be renamed and moved; this does
39 nothing with their contents. They can point outside of the sandbox
40 using relative or absolute paths.
41
42 TODO:
43
44 There doesn't exist yet a special command to create symbolic links, nor to
45 retarget them; retargetting a link can be done manually by editing MCVS/MAP
46 and updating. Retargetting a link using the ln -s command, won't
47 backpropagate to the MAP file; an update will clobber the link.
48
49 The grab command does not yet compute symbolic link moves; a moved symbolic
50 link is treated as a remove and add. This will be easy to fix.
51
52 The remap command ignores symlinks.
53
54 Release 0.21, 2002-08-04:
55
56 Syntax of grab command changed. The branch is no longer specified as an
57 argument, but using the -r command option. If no revision is specified with
58 -r, then a -A must be specified to make the grab go to the main trunk. This
59 is a safety feature, since grabbing foreign snapshots to the trunk is almost
60 always wrong, though it could be useful during backup recovery, or for fixing
61 mistakes.
62
63 The way operating system functions are targetted has changed. Instead of
64 relying on the ``linuxlibc6'' module provided by CLISP, Meta-CVS now
65 has its own module for calling foreign functions. This module is portable;
66 it does not depend on the layout of glibc data structures. So Meta-CVS
67 is in theory now portable to other Unixes (provided they have /dev/urandom).
68
69 Release 0.20, 2002-07-27:
70
71 The commit command does a true global commit when given no file or directory
72 parameters, and not given the --metaonly option. This means commiting all
73 changes in the MCVS directory, even if they are in F-files that are not
74 currently mapped.
75
76 Release 0.19, 2002-07-16:
77
78 When moving multiple files or directories to a subdirectory, a
79 restart is now provided to skip over bad ones and continue.
80
81 Grab no longer scans files if there are only added files, or only removed
82 files. There are no moves to deduce in that case.
83
84 Restore properly creates lost+found at the root of a partial sandbox,
85 rather than at the abstract root of the module.
86
87 Some other algorithmic improvements made.
88
89 The first few sections of a user guide have been written.
90
91 Release 0.18, 2002-07-07:
92
93 Cool new feature: checkout takes an extra argument, which specifies a
94 subdirectory of the project. Specifying a subdirectory results in a ``partial
95 sandbox'', whose root directory is the specified subdirectory of the larger
96 project. The rest of the project is ``invisible'' to that sandbox. A
97 subdirectory argument can also be given to mcvs grab, which will cause it to
98 integrate the new source tree against a subtree of the Meta-CVS project
99 rather than the entire project. The subtree doesn't have to exist; in
100 that case you get an empty sandbox. Adding files to this sandbox will cause
101 the tree to exist in the project.
102
103 Bugfix: mcvs grab was not computing moves properly over small file sets,
104 wrongly treating them as removes and adds.
105
106 Release 0.17, 2002-07-02:
107
108 The create command no longer takes a vendor branch. Instead the symbol
109 ``Created-by-Meta-CVS'' is used as the vendor tag to satisfy CVS.
110
111 The grab command no longer does useless synchronization on files that
112 are about to be deleted.
113
114 New purge command; does ``cvs rm'' on deleted files, that is to say, F- files
115 that have no mapping.
116
117 New restore command; re-enters deleted files into the mapping, under
118 the ``lost+found'' directory, using their F- names as sandbox names.
119
120 Bugfix: when a checkout bails because it is requested over top of an existing
121 working copy, it must not delete that working copy's MCVS sub directory.
122
123 Release 0.16, 2002-06-29:
124
125 Added new heuristics to grab command. Paths are analyzed to determine
126 move distance. Greater distances reduce the confidence in a move.
127 These rules help sort out grabs in a project where similar or
128 duplicate files are subject to parallel moves, the ambiguity being
129 resolved by favoring shorter moves. Word comparisons are case-insensitive
130 now. Common words (those that appear in many files) are ignored when
131 comparing files.
132
133 New options, --meta and --metaonly. This area of Meta-CVS is cleaned
134 up a little bit. Most reporting commands like log or diff no longer
135 operate on meta files by default; they must be explicitly told to do
136 so with --meta or --metaonly. Only the commit command implicitly includes
137 metafiles by default, and so if this is not wanted, --nometa must be
138 selected. The update command remains special; if it is given file
139 arguments, it does not include meta files. If given no arguments, it
140 does a global CVS up across the entire project.
141
142 Release 0.15, 2002-06-25:
143
144 Optimized a string splitting routine which is used heavily for processing
145 paths; the result is a noticeable performance improvement in some commands
146 that process large numbers of files.
147
148 Renamed ``import'' command to ``create''.
149
150 Bugfix: checkout and create showed errors when removing directory, due to
151 broken :postorder support in directory walking function.
152
153 Bugfix: on failure, checkout was failing to delete the MCVS directory when
154 the checkout was directed to an existing directory.
155
156 New feature: ``mcvs grab'' command imports third-party snapshots to a
157 branch. This is invoked in the root directory of the source tree to import.
158 It determines what files have been added and removed in the snapshot, and
159 tries to compute which removes and adds are actually moves. This is done by
160 analyzing the actual contents of the files according to a crude algorithm to
161 do fuzzy comparisons, so that even files which were modified as well as moved
162 are discovered.
163
164 Release 0.14, 2002-06-21:
165
166 Bugfix: mcvs add was broken for files that have no suffix, causing
167 the underlying cvs add to fail. This was broken in 0.7 when type
168 handling was added.
169
170 Release 0.13, 2002-06-06:
171
172 Sandbox synchronization now handles the case of two files having
173 the same timestamp. An error is signaled, with interactive resolution
174 to synchronize either way, or do nothing.
175
176 If a file must be deleted on update, and this cannot be done, it
177 is now a continuable error.
178
179 Bugfix: pass -I ! to cvs import so that it won't ignore some F- files
180 whose suffix is one of the ones cvs ignores by default.
181
182 New command: mcvs remap. The user can move or delete files directly without
183 going through Meta-CVS. When mcvs remap is invoked, it will hunt down the
184 moves and deletions, and reconstruct the mapping accordingly; that is,
185 it remaps the new structure. This command uses inode numbers to identify
186 files; if a file is copied and then the original is deleted, that won't
187 be recognized as a move.
188
189 Release 0.12, 2002-04-18:
190
191 Bugfix: remove was broken in 0.10, fixed now.
192
193 Bugfix: status, diff, etc. work in empty project rather than complaining
194 ``. not known to Meta-CVS''.
195
196 The checkout operation now can now populate an existing directory, including
197 the current working directory (mcvs co -d . modulename). Of course, the
198 target directory cannot be an existing Meta-CVS sandbox.
199 This is a useful feature, which allows sandboxes to blend with an
200 existing directory structure.
201
202 Checkout now uses the same function for generating the sandbox
203 structure as does update. This is now necessary, because local files
204 can be clobbered by the checkout.
205
206 Release 0.11, 2002-04-12:
207
208 Bugfix: when branch invokes rtag, it now takes the CVSROOT information
209 from CVS/Root and passes it via -d. This is necessary because rtag does not
210 look at a local CVS subdirectory for this information, only the
211 -d option or the environment variable.
212
213 Command for listing branches added (list-branches or lb). Also shows
214 what sticky tag the sandbox is updated to.
215
216 Command for switching branches added (switch or sw).
217
218 Merge detects that working copy is on non-branch tag and bails.
219
220 Absolute paths can now be specified as file arguments. These are
221 based from the root directory of the sandbox, not the actual filesystem root
222 directory.
223
224 Release 0.10, 2002-04-03:
225
226 Automatic merging implemented. Branch is created using branch command,
227 and merging from another branch is done using simple merge command.
228 Meta-CVS maintains the tags to keep track of what has been merged
229 from what branch to what branch.
230
231 Bugfix: checkout -d foo bar was complaining about directory bar already
232 existing, even though it should only care about foo.
233
234 The remove command now requires explicit -R option to recursively remove
235 a directory. It has more detailed error reporting.
236
237 The move command has better error reporting.
238
239 Release 0.9, 2002-03-14:
240
241 Bugfix: the .cvsignore file is now subject to tagging, status, etc,
242 (unless --nometa is specified, of course).
243
244 The mcvs filt command takes -r <revision> or -D <date> parameters.
245 This means to retrieve the MAP file as of the specified revision or
246 date and use that mapping to perform the filtering translation,
247 rather than using MAP-LOCAL.
248
249 The mcvs update command takes filename arguments now and also
250 supports the -p option.
251
252 Release 0.8, 2002-03-13:
253
254 Bug fixed in mcvs add; it was not ignoring files that are already
255 listed as :ignore in MCVS/TYPES.
256
257 Bug fixed in mcvs move: a target with a trailing slash is now treated
258 as a directory (if it does not already exist and is a non-directory).
259
260 The -d option of mcvs checkout can now be used to override the checkout
261 directory, which is normally the same as the module name.
262
263 The global options --version, --help, -q, -Q and -e are now supported.
264
265 New global options --error-continue and --error-terminate to disable
266 interactive error handling in two different ways.
267
268 Log level of many messages has changed; many messages have been
269 relegated to debug level.
270
271 The import command now creates a .cvsignore file containing the name
272 MAP-LOCAL.
273
274 Release 0.7, 2002-03-09:
275
276 The import command collects a list of the file suffixes and brings up
277 a text editor to allow the user to edit their CVS keyword expansion
278 behavior. This information is kept in a new metafile called TYPES. The
279 add command also updates TYPES; it identifies any suffixes which are new,
280 and brings up an editor. The F- files now carry suffixes, which
281 simplifies interfacing with CVS, and also allows cvswrappers to work.
282
283 Recursive add works (mcvs add -R ...).
284
285 New command line option --nometa allows metafiles to be excluded from
286 diff, tag, and other commands; without the option they are inserted
287 into the list of files to be processed.
288
289 The commit option now takes an optional list of files or directories,
290 just like tag, diff, and others.
291
292 Release 0.6, 2002-02-16:
293
294 The add operation was horribly broken in 0.5, it is fixed.
295
296 User can interactively select whether to clobber local files or leave
297 everything alone. Effects on the mapping file of a mcvs move are undone,
298 if the restructuring is rolled back, or raises a condition that leads
299 to termination.
300
301 Meta-CVS now keeps a new meta-file called MCVS/TYPES. This is created
302 during import, and specifies the CVS keyword expansion mode for files
303 having given suffixes, and can also tell Meta-CVS to ignore certain files
304 when importing or adding.
305
306 Release 0.5, 2002-02-10:
307
308 Much improved error handling. Filesystem rearranging code performs
309 sanity checks to prevent adds and moves from accidentally clobbering
310 local files. A rearranging gone bad can be rolled back. Effects
311 of a failed mcvs add can also be rolled back.
312
313 MAP-LOCAL is now sorted in the same way as MAP.
314
315 Release 0.4, 2002-02-04:
316
317 CVS is invoked using internal function resembling the xargs utility,
318 which ensures that multiple command lines are generated if necessary to
319 avoid surpassing the operating system limit on argument and environment
320 vector size. This is important when someone wants to diff or stat a
321 subdirectory, which requires Meta-CVS to pick out the individual files
322 at the CVS level.
323
324 The tag, log, status and annotate commands are now available.
325
326 The MAP file is sorted on F- file names now, not path names. This
327 improves merging, since files do not move within the file when
328 they are renamed.
329
330 Release 0.3, 2002-02-02:
331
332 Process termination done is properly in top level handler, by a nonlocal
333 exit. The program properly indicates failed termination when it exits
334 due to an error condition.
335
336 Corrections are made in the command line option processing. If z is an
337 option that takes an argument, and the argument is -zx, then x is
338 treated as the argument to the option. Long options arguments are
339 recognized properly, according to the --opt=arg convention. The option
340 processing is restructured. Most of the commands now take the
341 appropriate cvs command-specific options.
342
343 The update algorithm performs dupe checking over the map, which could
344 happen during a merge.
345
346 Some more bugfixing has been done to the move command. It was still not
347 handling right some cases of an unversioned file being clobbered. Also,
348 it wasn't renaming a directory containing just one file.
349
350 I did some performance investigation for larger file sets, and
351 ended up rewriting the code that computes filesystem restructuring
352 changes and map duplicates.
353
354 Release 0.2, 2002-01-30:
355
356 Changed official name from MCVS to Meta-CVS. The move command now
357 performs some filesystem tests so it does the right thing when a versioned
358 file is moved over a non-versioned file, or when a file is moved into
359 a directory not known to Meta-CVS. Factored out reading and writing of
360 map files into functions.
361
362 Release 0.1, 2002-01-28:
363
364 Support for mcvs diff -u added. The -R option works for mcvs add command.
365 Bug fixed in mcvs mv command; it wasn't working analogously to the Unix
366 mv command when copying a directory to an existing directory.
367
368 Release 0.0, 2002-01-27:
369
370 This is alpha software. It is not complete, and lacks documentation.
371 However, it is already usable in its present state and is being used for
372 version control by its author. If you can program in Common Lisp and would
373 like to help, take a look through the TODO file. Send me patches, ideas,
374 feature requests.

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