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Contents of /meta-cvs/F-B3689DBB46386B16F4B2331934B69223

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Revision 1.105 - (show annotations)
Wed Sep 11 05:14:38 2002 UTC (11 years, 7 months ago) by kaz
Branch: MAIN
Changes since 1.104: +3 -0 lines
* code/filt.lisp (mcvs-filt): Bugfix: was trying to
use NIL as if it were a mapping-entry struct after an unsuccessful
1 Release Notes for Meta-CVS
3 Release 0.95, 2002-09-??:
5 The install.sh script no longer uses a borrowed copy of the clisp-link
6 script or the linkkit/ directory. These are CLISP materials which
7 we should use from the installation of CLISP; in addition, the
8 material under linkkit/ is machine-architecture-specific!
10 A bug in mcvs filt was fixed; it wasn't handling F- names that aren't found
11 in the map.
13 Release 0.24, 2002-09-08:
15 The mapping entries for both symlinks and files have extensible property
16 lists now. These are stored in the optional fourth and fifth list elements,
17 respectively of the :FILE and :SYMLINK map entries.
19 Versioning of the execute permission of files is supported, represented as
20 the :EXEC property of a :FILE mapping entry.
22 Some lame syntax is provided for manipulating properties:
24 mcvs prop --set foo --clear bar --remove baz main.c list.c
26 will set the property FOO to true, set the property BAR to false,
27 and remove the property BAZ, in the files main.c and list.c.
28 The execute permission is represented by the property EXEC.
30 Release 0.23, 2002-09-02:
32 Bugfix: the grab command notices edited symlinks and incorporates the
33 changes into the mapping.
35 The grab command now figures out moved symlinks. Moved symlinks are those
36 whose pathname has changed, but which continue to point to the same object
37 (which may also have been moved).
39 Release 0.22, 2002-08-31:
41 Symbolic links are now versioned objects. The format of the MAP file
42 changes to accomodate this; the new Meta-CVS will read old MAP
43 files; when it writes it will write the new format. Old Meta-CVS won't
44 read the new format.
46 When a new module is created from an existing file tree, symbolic
47 links will be recognized and added. The add command will also add
48 symbolic links. Symbolic links can be renamed and moved; this does
49 nothing with their contents. They can point outside of the sandbox
50 using relative or absolute paths.
52 TODO:
54 There doesn't exist yet a special command to create symbolic links, nor to
55 retarget them; retargetting a link can be done manually by editing MCVS/MAP
56 and updating. Retargetting a link using the ln -s command, won't
57 backpropagate to the MAP file; an update will clobber the link.
59 The grab command does not yet compute symbolic link moves; a moved symbolic
60 link is treated as a remove and add. This will be easy to fix.
62 The remap command ignores symlinks.
64 Release 0.21, 2002-08-04:
66 Syntax of grab command changed. The branch is no longer specified as an
67 argument, but using the -r command option. If no revision is specified with
68 -r, then a -A must be specified to make the grab go to the main trunk. This
69 is a safety feature, since grabbing foreign snapshots to the trunk is almost
70 always wrong, though it could be useful during backup recovery, or for fixing
71 mistakes.
73 The way operating system functions are targetted has changed. Instead of
74 relying on the ``linuxlibc6'' module provided by CLISP, Meta-CVS now
75 has its own module for calling foreign functions. This module is portable;
76 it does not depend on the layout of glibc data structures. So Meta-CVS
77 is in theory now portable to other Unixes (provided they have /dev/urandom).
79 Release 0.20, 2002-07-27:
81 The commit command does a true global commit when given no file or directory
82 parameters, and not given the --metaonly option. This means commiting all
83 changes in the MCVS directory, even if they are in F-files that are not
84 currently mapped.
86 Release 0.19, 2002-07-16:
88 When moving multiple files or directories to a subdirectory, a
89 restart is now provided to skip over bad ones and continue.
91 Grab no longer scans files if there are only added files, or only removed
92 files. There are no moves to deduce in that case.
94 Restore properly creates lost+found at the root of a partial sandbox,
95 rather than at the abstract root of the module.
97 Some other algorithmic improvements made.
99 The first few sections of a user guide have been written.
101 Release 0.18, 2002-07-07:
103 Cool new feature: checkout takes an extra argument, which specifies a
104 subdirectory of the project. Specifying a subdirectory results in a ``partial
105 sandbox'', whose root directory is the specified subdirectory of the larger
106 project. The rest of the project is ``invisible'' to that sandbox. A
107 subdirectory argument can also be given to mcvs grab, which will cause it to
108 integrate the new source tree against a subtree of the Meta-CVS project
109 rather than the entire project. The subtree doesn't have to exist; in
110 that case you get an empty sandbox. Adding files to this sandbox will cause
111 the tree to exist in the project.
113 Bugfix: mcvs grab was not computing moves properly over small file sets,
114 wrongly treating them as removes and adds.
116 Release 0.17, 2002-07-02:
118 The create command no longer takes a vendor branch. Instead the symbol
119 ``Created-by-Meta-CVS'' is used as the vendor tag to satisfy CVS.
121 The grab command no longer does useless synchronization on files that
122 are about to be deleted.
124 New purge command; does ``cvs rm'' on deleted files, that is to say, F- files
125 that have no mapping.
127 New restore command; re-enters deleted files into the mapping, under
128 the ``lost+found'' directory, using their F- names as sandbox names.
130 Bugfix: when a checkout bails because it is requested over top of an existing
131 working copy, it must not delete that working copy's MCVS sub directory.
133 Release 0.16, 2002-06-29:
135 Added new heuristics to grab command. Paths are analyzed to determine
136 move distance. Greater distances reduce the confidence in a move.
137 These rules help sort out grabs in a project where similar or
138 duplicate files are subject to parallel moves, the ambiguity being
139 resolved by favoring shorter moves. Word comparisons are case-insensitive
140 now. Common words (those that appear in many files) are ignored when
141 comparing files.
143 New options, --meta and --metaonly. This area of Meta-CVS is cleaned
144 up a little bit. Most reporting commands like log or diff no longer
145 operate on meta files by default; they must be explicitly told to do
146 so with --meta or --metaonly. Only the commit command implicitly includes
147 metafiles by default, and so if this is not wanted, --nometa must be
148 selected. The update command remains special; if it is given file
149 arguments, it does not include meta files. If given no arguments, it
150 does a global CVS up across the entire project.
152 Release 0.15, 2002-06-25:
154 Optimized a string splitting routine which is used heavily for processing
155 paths; the result is a noticeable performance improvement in some commands
156 that process large numbers of files.
158 Renamed ``import'' command to ``create''.
160 Bugfix: checkout and create showed errors when removing directory, due to
161 broken :postorder support in directory walking function.
163 Bugfix: on failure, checkout was failing to delete the MCVS directory when
164 the checkout was directed to an existing directory.
166 New feature: ``mcvs grab'' command imports third-party snapshots to a
167 branch. This is invoked in the root directory of the source tree to import.
168 It determines what files have been added and removed in the snapshot, and
169 tries to compute which removes and adds are actually moves. This is done by
170 analyzing the actual contents of the files according to a crude algorithm to
171 do fuzzy comparisons, so that even files which were modified as well as moved
172 are discovered.
174 Release 0.14, 2002-06-21:
176 Bugfix: mcvs add was broken for files that have no suffix, causing
177 the underlying cvs add to fail. This was broken in 0.7 when type
178 handling was added.
180 Release 0.13, 2002-06-06:
182 Sandbox synchronization now handles the case of two files having
183 the same timestamp. An error is signaled, with interactive resolution
184 to synchronize either way, or do nothing.
186 If a file must be deleted on update, and this cannot be done, it
187 is now a continuable error.
189 Bugfix: pass -I ! to cvs import so that it won't ignore some F- files
190 whose suffix is one of the ones cvs ignores by default.
192 New command: mcvs remap. The user can move or delete files directly without
193 going through Meta-CVS. When mcvs remap is invoked, it will hunt down the
194 moves and deletions, and reconstruct the mapping accordingly; that is,
195 it remaps the new structure. This command uses inode numbers to identify
196 files; if a file is copied and then the original is deleted, that won't
197 be recognized as a move.
199 Release 0.12, 2002-04-18:
201 Bugfix: remove was broken in 0.10, fixed now.
203 Bugfix: status, diff, etc. work in empty project rather than complaining
204 ``. not known to Meta-CVS''.
206 The checkout operation now can now populate an existing directory, including
207 the current working directory (mcvs co -d . modulename). Of course, the
208 target directory cannot be an existing Meta-CVS sandbox.
209 This is a useful feature, which allows sandboxes to blend with an
210 existing directory structure.
212 Checkout now uses the same function for generating the sandbox
213 structure as does update. This is now necessary, because local files
214 can be clobbered by the checkout.
216 Release 0.11, 2002-04-12:
218 Bugfix: when branch invokes rtag, it now takes the CVSROOT information
219 from CVS/Root and passes it via -d. This is necessary because rtag does not
220 look at a local CVS subdirectory for this information, only the
221 -d option or the environment variable.
223 Command for listing branches added (list-branches or lb). Also shows
224 what sticky tag the sandbox is updated to.
226 Command for switching branches added (switch or sw).
228 Merge detects that working copy is on non-branch tag and bails.
230 Absolute paths can now be specified as file arguments. These are
231 based from the root directory of the sandbox, not the actual filesystem root
232 directory.
234 Release 0.10, 2002-04-03:
236 Automatic merging implemented. Branch is created using branch command,
237 and merging from another branch is done using simple merge command.
238 Meta-CVS maintains the tags to keep track of what has been merged
239 from what branch to what branch.
241 Bugfix: checkout -d foo bar was complaining about directory bar already
242 existing, even though it should only care about foo.
244 The remove command now requires explicit -R option to recursively remove
245 a directory. It has more detailed error reporting.
247 The move command has better error reporting.
249 Release 0.9, 2002-03-14:
251 Bugfix: the .cvsignore file is now subject to tagging, status, etc,
252 (unless --nometa is specified, of course).
254 The mcvs filt command takes -r <revision> or -D <date> parameters.
255 This means to retrieve the MAP file as of the specified revision or
256 date and use that mapping to perform the filtering translation,
257 rather than using MAP-LOCAL.
259 The mcvs update command takes filename arguments now and also
260 supports the -p option.
262 Release 0.8, 2002-03-13:
264 Bug fixed in mcvs add; it was not ignoring files that are already
265 listed as :ignore in MCVS/TYPES.
267 Bug fixed in mcvs move: a target with a trailing slash is now treated
268 as a directory (if it does not already exist and is a non-directory).
270 The -d option of mcvs checkout can now be used to override the checkout
271 directory, which is normally the same as the module name.
273 The global options --version, --help, -q, -Q and -e are now supported.
275 New global options --error-continue and --error-terminate to disable
276 interactive error handling in two different ways.
278 Log level of many messages has changed; many messages have been
279 relegated to debug level.
281 The import command now creates a .cvsignore file containing the name
284 Release 0.7, 2002-03-09:
286 The import command collects a list of the file suffixes and brings up
287 a text editor to allow the user to edit their CVS keyword expansion
288 behavior. This information is kept in a new metafile called TYPES. The
289 add command also updates TYPES; it identifies any suffixes which are new,
290 and brings up an editor. The F- files now carry suffixes, which
291 simplifies interfacing with CVS, and also allows cvswrappers to work.
293 Recursive add works (mcvs add -R ...).
295 New command line option --nometa allows metafiles to be excluded from
296 diff, tag, and other commands; without the option they are inserted
297 into the list of files to be processed.
299 The commit option now takes an optional list of files or directories,
300 just like tag, diff, and others.
302 Release 0.6, 2002-02-16:
304 The add operation was horribly broken in 0.5, it is fixed.
306 User can interactively select whether to clobber local files or leave
307 everything alone. Effects on the mapping file of a mcvs move are undone,
308 if the restructuring is rolled back, or raises a condition that leads
309 to termination.
311 Meta-CVS now keeps a new meta-file called MCVS/TYPES. This is created
312 during import, and specifies the CVS keyword expansion mode for files
313 having given suffixes, and can also tell Meta-CVS to ignore certain files
314 when importing or adding.
316 Release 0.5, 2002-02-10:
318 Much improved error handling. Filesystem rearranging code performs
319 sanity checks to prevent adds and moves from accidentally clobbering
320 local files. A rearranging gone bad can be rolled back. Effects
321 of a failed mcvs add can also be rolled back.
323 MAP-LOCAL is now sorted in the same way as MAP.
325 Release 0.4, 2002-02-04:
327 CVS is invoked using internal function resembling the xargs utility,
328 which ensures that multiple command lines are generated if necessary to
329 avoid surpassing the operating system limit on argument and environment
330 vector size. This is important when someone wants to diff or stat a
331 subdirectory, which requires Meta-CVS to pick out the individual files
332 at the CVS level.
334 The tag, log, status and annotate commands are now available.
336 The MAP file is sorted on F- file names now, not path names. This
337 improves merging, since files do not move within the file when
338 they are renamed.
340 Release 0.3, 2002-02-02:
342 Process termination done is properly in top level handler, by a nonlocal
343 exit. The program properly indicates failed termination when it exits
344 due to an error condition.
346 Corrections are made in the command line option processing. If z is an
347 option that takes an argument, and the argument is -zx, then x is
348 treated as the argument to the option. Long options arguments are
349 recognized properly, according to the --opt=arg convention. The option
350 processing is restructured. Most of the commands now take the
351 appropriate cvs command-specific options.
353 The update algorithm performs dupe checking over the map, which could
354 happen during a merge.
356 Some more bugfixing has been done to the move command. It was still not
357 handling right some cases of an unversioned file being clobbered. Also,
358 it wasn't renaming a directory containing just one file.
360 I did some performance investigation for larger file sets, and
361 ended up rewriting the code that computes filesystem restructuring
362 changes and map duplicates.
364 Release 0.2, 2002-01-30:
366 Changed official name from MCVS to Meta-CVS. The move command now
367 performs some filesystem tests so it does the right thing when a versioned
368 file is moved over a non-versioned file, or when a file is moved into
369 a directory not known to Meta-CVS. Factored out reading and writing of
370 map files into functions.
372 Release 0.1, 2002-01-28:
374 Support for mcvs diff -u added. The -R option works for mcvs add command.
375 Bug fixed in mcvs mv command; it wasn't working analogously to the Unix
376 mv command when copying a directory to an existing directory.
378 Release 0.0, 2002-01-27:
380 This is alpha software. It is not complete, and lacks documentation.
381 However, it is already usable in its present state and is being used for
382 version control by its author. If you can program in Common Lisp and would
383 like to help, take a look through the TODO file. Send me patches, ideas,
384 feature requests.

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