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Contents of /meta-cvs/F-B3689DBB46386B16F4B2331934B69223

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Revision 1.110 - (show annotations)
Thu Sep 19 01:50:04 2002 UTC (11 years, 7 months ago) by kaz
Branch: MAIN
Changes since 1.109: +5 -0 lines
* code/restore.lisp (mcvs-restore): Was still generating old-style
mapping entries.

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

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