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Contents of /meta-cvs/F-B3689DBB46386B16F4B2331934B69223

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Revision 1.154 - (hide annotations)
Sun Jan 12 20:52:31 2003 UTC (11 years, 3 months ago) by kaz
Branch: MAIN
Changes since 1.153: +6 -0 lines
Merging from mcvs-1-0-branch.

Hard link sync optimization.

* code/mapping.lisp (mapping-synchronize): New optional parameter,
specifies map to use instead of reading *map-local*.

* code/mcvs-generic.lisp (mcvs-generic): Pass extra parameter to
mapping-synchronize to only sync the selected subset of files.
1 kaz 1.115 Release Notes for Meta-CVS
2 kaz 1.1
3 kaz 1.142 Release ?.??, 200?-??-??:
5     All Lisp symbols are isolated in a package.
7 kaz 1.154 Release 1.0.1, 2003-0?-??:
9     Hard link sync optimization: update of a subset of files, commit, and
10     other operations like log and diff don't need to synchronize all
11     hard links, just the ones operated on.
13 kaz 1.153 Release 1.0, 2003-01-01:
14 kaz 1.147
15 kaz 1.151 NOTE: It's not possible to upgrade to this release via mcvs-upgrade,
16     because it adds some new C functions to the Lisp executable.
18 kaz 1.147 Security fix: read-time evaluation was not suppressed when reading
19     structured data, like MCVS/MAP and MCVS/TYPES. This means that it
20     was possible for Alice to check in something that would execute
21     arbitrary code on Bob's computer.
23 kaz 1.148 Optimization: use fork and exec to launch CVS rather than CLISP's
24     run-program function, which indirects through the shell interpreter.
25 kaz 1.153 (On Cygwin, the spawnvp function is used).
26 kaz 1.148
27 kaz 1.149 Performance fix: stat() was being called superfluously by the
28     hard synchronization code, twice for each file.
30 kaz 1.150 Build fix: install.sh works when CLISP executable is called ``lisp.exe'',
31     which is the case under Cygwin with newer CLISP releases.
33 kaz 1.146 Release 0.99, 2002-11-17:
34 kaz 1.135
35 kaz 1.140 New link command for creating symbolic links.
37 kaz 1.144 Global option -n (dry run---don't modify filesystem) is processed
38     internally now, not just passed to CVS.
40 kaz 1.135 Failure to invoke text editor is handled.
42 kaz 1.136 The -r option of filt is fixed; it has been broken since the change to the
43     new MAP format, because it was reading the raw map representation, not
44     passing it through the right conversion steps that are needed now.
46 kaz 1.138 Bugfix to purge and remap commands: they were fooled by CVS-generated
47     files in the MCVS/CVS directory. Specifically, files having F- names, and a
48     the suffix ,t.
50 kaz 1.141 Bugfix to add logic in directory restructuring: there was the possibility
51     of mistakingly taking a clobbered local file to be a new local version of
52     the added file, instead of replacing it. This could happen if the local
53     file had a future timestamp relative to the one coming from the repository.
55 kaz 1.143 The prop command does not synchronize or write out map if no options are
56     specified.
58 kaz 1.144 Help text added for move and branch commands. Help text for grab rewritten.
59 kaz 1.137
60 kaz 1.145 The CVSEDITOR and VISUAL environment variables are now checked, not
61     only EDITOR.
63 kaz 1.134 Release 0.98, 2002-10-13:
64 kaz 1.128
65 kaz 1.133 The prop command was mistakenly reading from MAP-LOCAL and writing to MAP,
66     which could cause information loss if the two differ. It now reads from MAP
67     and writes to MAP. (The property changes propagate to MAP-LOCAL by the
68     update operation invoked by prop, as before).
70     Invocation of external programs included in debug trace.
71 kaz 1.128
72     The filt command does not filter F- names if they are immediately preceded by
73     the MCVS/ prefix; such occurences are clearly concrete, sandbox-relative
74     references to the actual F- links, rather than abstract references.
76 kaz 1.129 The update command now supports the -C option, to fetch the repository
77     copy, throwing away local changes. It also now honors the --metaonly
78     and --nometa options.
79 kaz 1.130
80     The export command has been added, for checking out documents without creating
81     a working copy (no MCVS directory in the root of the checkout).
82 kaz 1.131
83 kaz 1.133 The watch command has been added. Note that its syntax differs from that
84     of CVS.
85 kaz 1.132
86     The watchers, editors, edit, and unedit commands have been added.
87 kaz 1.134
88     A script called mcvs-upgrade is now included, and installs alongside the mcvs
89     script. This allows the Meta-CVS Lisp image to recompile and patch itself,
90     giving users of binary distributions an easy way to upgrade from source
91     code.
93 kaz 1.127 Release 0.97, 2002-10-06:
94 kaz 1.119
95     Meta-CVS now builds and runs on Microsoft Windows, under Cygwin
96     (www.cygwin.com). It still relies on hard links, which requires
97     Windows 2000 or XP, and the NTFS filesystem. It probably won't
98     work over FAT.
99 kaz 1.120
100     New --debug option for verbose output.
102     Cleaned up of error messages. Error messages don't specify prefixes like
103     ``mcvs-add:'' or ``mcvs-grab:'' any more. Rather, the error handler adds the
104     ``mcvs:'' prefix when printing the messages in a situation when the error is
105     not continuable.
106 kaz 1.119
107 kaz 1.121 Fixed bug introduced in release 0.13: mcvs add -R was adding only
108     directories, effectively ignoring arguments that are regular files.
109 kaz 1.122 The error-continuation behavior of mcvs add has been revised.
110 kaz 1.121
111 kaz 1.125 Trying to rename an object onto itself, or to move the sandbox root
112     directory are no longer silent no-ops, but produce an error.
113 kaz 1.123
114 kaz 1.124 The remap command now preserves property lists, and picks up changes
115     in executable permission.
117     The grab command now notices when a file changes from having execute
118     permission to not having execute permission.
120 kaz 1.126 Operations on the path . now work in a partial sandbox.
122 kaz 1.118 Release 0.96, 2002-09-21:
123 kaz 1.110
124     The restore command was left broken during the change to the new
125     filemap format. It is now fixed.
127 kaz 1.111 The grab command now handles execute permission bits properly.
129 kaz 1.112 Some more commands have detailed help.
131 kaz 1.113 There is now a global option -i which specifies a script to be
132 kaz 1.114 executed. This allows Meta-CVS to be scripted using Lisp. For
133     instance suppose you have the following script and call it
134     list-matching:
135 kaz 1.113
136     #!/usr/local/bin/mcvs -i
137     (in-sandbox-root-dir
138 kaz 1.114 (let ((mapping (mapping-read *mcvs-map*))
139 kaz 1.117 (test-func (eval (read-from-string (pop *args*)))))
140 kaz 1.114 (dolist (entry mapping)
141     (with-slots (path raw-plist) entry
142 kaz 1.117 (when (funcall test-func raw-plist)
143 kaz 1.114 (format t "~a~%" path))))))
145     Then to list the names of files whose "importance" property is
146     a value greater than two, run:
148     ./list-matching '(lambda (plist)
149     (let ((imp (getf plist :importance)))
150     (and imp (> imp 2))))'
151 kaz 1.117
152     WARNING: Scripting accesses the guts of Meta-CVS directly, so scripts may
153     break as Meta-CVS is maintained. There is currently no published set of
154     stable interfaces.
155 kaz 1.113
156 kaz 1.109 Release 0.95, 2002-09-16:
157 kaz 1.104
158 kaz 1.107 The install.sh script no longer uses a borrowed copy of the clisp-link script
159     or the linkkit directory; these have been removed. These materials
160     are available at every CLISP installation; install.sh now finds them
161     and uses them. Users of non-x86 machines ran into problems because of this
162     because linkkit/clisp.h contains architecture-dependent information.
163 kaz 1.104
164 kaz 1.105 A bug in mcvs filt was fixed; it wasn't handling F- names that aren't found
165     in the map.
167 kaz 1.108 A more detailed help system now exists, though it's not complete. The ``mcvs
168     help'' command acts just like ``mcvs --help'' without any arguments. If given
169     an additional parameter which specifies a Meta-CVS command, it produces more
170     detailed documentation for that comand. Help exists already for a few
171     commands.
173 kaz 1.107 The release number is being warped to 0.95, which means that Meta-CVS is now
174     in beta. It is only five updates away from a 1.0 release.
175 kaz 1.106
176 kaz 1.103 Release 0.24, 2002-09-08:
177 kaz 1.98
178 kaz 1.99 The mapping entries for both symlinks and files have extensible property
179     lists now. These are stored in the optional fourth and fifth list elements,
180     respectively of the :FILE and :SYMLINK map entries.
182     Versioning of the execute permission of files is supported, represented as
183     the :EXEC property of a :FILE mapping entry.
184 kaz 1.98
185 kaz 1.100 Some lame syntax is provided for manipulating properties:
187 kaz 1.102 mcvs prop --set foo --clear bar --remove baz main.c list.c
188 kaz 1.100
189     will set the property FOO to true, set the property BAR to false,
190     and remove the property BAZ, in the files main.c and list.c.
191     The execute permission is represented by the property EXEC.
193 kaz 1.97 Release 0.23, 2002-09-02:
194 kaz 1.95
195 kaz 1.96 Bugfix: the grab command notices edited symlinks and incorporates the
196     changes into the mapping.
198     The grab command now figures out moved symlinks. Moved symlinks are those
199     whose pathname has changed, but which continue to point to the same object
200     (which may also have been moved).
201 kaz 1.95
202 kaz 1.94 Release 0.22, 2002-08-31:
203 kaz 1.93
204     Symbolic links are now versioned objects. The format of the MAP file
205     changes to accomodate this; the new Meta-CVS will read old MAP
206     files; when it writes it will write the new format. Old Meta-CVS won't
207     read the new format.
209     When a new module is created from an existing file tree, symbolic
210     links will be recognized and added. The add command will also add
211     symbolic links. Symbolic links can be renamed and moved; this does
212     nothing with their contents. They can point outside of the sandbox
213     using relative or absolute paths.
215 kaz 1.94 TODO:
217 kaz 1.93 There doesn't exist yet a special command to create symbolic links, nor to
218     retarget them; retargetting a link can be done manually by editing MCVS/MAP
219     and updating. Retargetting a link using the ln -s command, won't
220 kaz 1.94 backpropagate to the MAP file; an update will clobber the link.
222     The grab command does not yet compute symbolic link moves; a moved symbolic
223     link is treated as a remove and add. This will be easy to fix.
225     The remap command ignores symlinks.
226 kaz 1.93
227 kaz 1.92 Release 0.21, 2002-08-04:
228 kaz 1.88
229 kaz 1.89 Syntax of grab command changed. The branch is no longer specified as an
230     argument, but using the -r command option. If no revision is specified with
231     -r, then a -A must be specified to make the grab go to the main trunk. This
232     is a safety feature, since grabbing foreign snapshots to the trunk is almost
233     always wrong, though it could be useful during backup recovery, or for fixing
234     mistakes.
236 kaz 1.91 The way operating system functions are targetted has changed. Instead of
237     relying on the ``linuxlibc6'' module provided by CLISP, Meta-CVS now
238     has its own module for calling foreign functions. This module is portable;
239     it does not depend on the layout of glibc data structures. So Meta-CVS
240     is in theory now portable to other Unixes (provided they have /dev/urandom).
242 kaz 1.87 Release 0.20, 2002-07-27:
243 kaz 1.86
244     The commit command does a true global commit when given no file or directory
245     parameters, and not given the --metaonly option. This means commiting all
246     changes in the MCVS directory, even if they are in F-files that are not
247     currently mapped.
249 kaz 1.85 Release 0.19, 2002-07-16:
250 kaz 1.81
251     When moving multiple files or directories to a subdirectory, a
252     restart is now provided to skip over bad ones and continue.
254 kaz 1.83 Grab no longer scans files if there are only added files, or only removed
255     files. There are no moves to deduce in that case.
257 kaz 1.84 Restore properly creates lost+found at the root of a partial sandbox,
258     rather than at the abstract root of the module.
260 kaz 1.83 Some other algorithmic improvements made.
261 kaz 1.82
262     The first few sections of a user guide have been written.
264 kaz 1.80 Release 0.18, 2002-07-07:
265 kaz 1.77
266 kaz 1.78 Cool new feature: checkout takes an extra argument, which specifies a
267     subdirectory of the project. Specifying a subdirectory results in a ``partial
268     sandbox'', whose root directory is the specified subdirectory of the larger
269     project. The rest of the project is ``invisible'' to that sandbox. A
270     subdirectory argument can also be given to mcvs grab, which will cause it to
271     integrate the new source tree against a subtree of the Meta-CVS project
272 kaz 1.79 rather than the entire project. The subtree doesn't have to exist; in
273     that case you get an empty sandbox. Adding files to this sandbox will cause
274     the tree to exist in the project.
275 kaz 1.78
276 kaz 1.77 Bugfix: mcvs grab was not computing moves properly over small file sets,
277     wrongly treating them as removes and adds.
279 kaz 1.76 Release 0.17, 2002-07-02:
280 kaz 1.71
281     The create command no longer takes a vendor branch. Instead the symbol
282     ``Created-by-Meta-CVS'' is used as the vendor tag to satisfy CVS.
284 kaz 1.72 The grab command no longer does useless synchronization on files that
285     are about to be deleted.
287 kaz 1.75 New purge command; does ``cvs rm'' on deleted files, that is to say, F- files
288     that have no mapping.
290     New restore command; re-enters deleted files into the mapping, under
291     the ``lost+found'' directory, using their F- names as sandbox names.
292 kaz 1.73
293 kaz 1.74 Bugfix: when a checkout bails because it is requested over top of an existing
294     working copy, it must not delete that working copy's MCVS sub directory.
296 kaz 1.70 Release 0.16, 2002-06-29:
297 kaz 1.67
298     Added new heuristics to grab command. Paths are analyzed to determine
299     move distance. Greater distances reduce the confidence in a move.
300     These rules help sort out grabs in a project where similar or
301     duplicate files are subject to parallel moves, the ambiguity being
302 kaz 1.68 resolved by favoring shorter moves. Word comparisons are case-insensitive
303     now. Common words (those that appear in many files) are ignored when
304     comparing files.
305 kaz 1.67
306 kaz 1.69 New options, --meta and --metaonly. This area of Meta-CVS is cleaned
307     up a little bit. Most reporting commands like log or diff no longer
308     operate on meta files by default; they must be explicitly told to do
309     so with --meta or --metaonly. Only the commit command implicitly includes
310     metafiles by default, and so if this is not wanted, --nometa must be
311     selected. The update command remains special; if it is given file
312     arguments, it does not include meta files. If given no arguments, it
313     does a global CVS up across the entire project.
315 kaz 1.66 Release 0.15, 2002-06-25:
316 kaz 1.61
317 kaz 1.65 Optimized a string splitting routine which is used heavily for processing
318     paths; the result is a noticeable performance improvement in some commands
319     that process large numbers of files.
320 kaz 1.61
321 kaz 1.62 Renamed ``import'' command to ``create''.
323 kaz 1.65 Bugfix: checkout and create showed errors when removing directory, due to
324     broken :postorder support in directory walking function.
325 kaz 1.63
326 kaz 1.65 Bugfix: on failure, checkout was failing to delete the MCVS directory when
327     the checkout was directed to an existing directory.
329 kaz 1.66 New feature: ``mcvs grab'' command imports third-party snapshots to a
330 kaz 1.65 branch. This is invoked in the root directory of the source tree to import.
331     It determines what files have been added and removed in the snapshot, and
332     tries to compute which removes and adds are actually moves. This is done by
333     analyzing the actual contents of the files according to a crude algorithm to
334     do fuzzy comparisons, so that even files which were modified as well as moved
335     are discovered.
336 kaz 1.64
337 kaz 1.60 Release 0.14, 2002-06-21:
338 kaz 1.59
339     Bugfix: mcvs add was broken for files that have no suffix, causing
340 kaz 1.60 the underlying cvs add to fail. This was broken in 0.7 when type
341     handling was added.
342 kaz 1.59
343 kaz 1.58 Release 0.13, 2002-06-06:
344 kaz 1.55
345     Sandbox synchronization now handles the case of two files having
346     the same timestamp. An error is signaled, with interactive resolution
347     to synchronize either way, or do nothing.
349 kaz 1.56 If a file must be deleted on update, and this cannot be done, it
350     is now a continuable error.
352     Bugfix: pass -I ! to cvs import so that it won't ignore some F- files
353     whose suffix is one of the ones cvs ignores by default.
355 kaz 1.57 New command: mcvs remap. The user can move or delete files directly without
356     going through Meta-CVS. When mcvs remap is invoked, it will hunt down the
357     moves and deletions, and reconstruct the mapping accordingly; that is,
358     it remaps the new structure. This command uses inode numbers to identify
359     files; if a file is copied and then the original is deleted, that won't
360     be recognized as a move.
362 kaz 1.53 Release 0.12, 2002-04-18:
363 kaz 1.51
364     Bugfix: remove was broken in 0.10, fixed now.
366 kaz 1.54 Bugfix: status, diff, etc. work in empty project rather than complaining
367     ``. not known to Meta-CVS''.
369 kaz 1.52 The checkout operation now can now populate an existing directory, including
370     the current working directory (mcvs co -d . modulename). Of course, the
371     target directory cannot be an existing Meta-CVS sandbox.
372     This is a useful feature, which allows sandboxes to blend with an
373     existing directory structure.
375     Checkout now uses the same function for generating the sandbox
376     structure as does update. This is now necessary, because local files
377     can be clobbered by the checkout.
379 kaz 1.50 Release 0.11, 2002-04-12:
380 kaz 1.46
381     Bugfix: when branch invokes rtag, it now takes the CVSROOT information
382     from CVS/Root and passes it via -d. This is necessary because rtag does not
383     look at a local CVS subdirectory for this information, only the
384     -d option or the environment variable.
386 kaz 1.48 Command for listing branches added (list-branches or lb). Also shows
387     what sticky tag the sandbox is updated to.
389     Command for switching branches added (switch or sw).
391     Merge detects that working copy is on non-branch tag and bails.
392 kaz 1.47
393 kaz 1.49 Absolute paths can now be specified as file arguments. These are
394     based from the root directory of the sandbox, not the actual filesystem root
395     directory.
397 kaz 1.45 Release 0.10, 2002-04-03:
398 kaz 1.44
399     Automatic merging implemented. Branch is created using branch command,
400     and merging from another branch is done using simple merge command.
401     Meta-CVS maintains the tags to keep track of what has been merged
402     from what branch to what branch.
403 kaz 1.40
404     Bugfix: checkout -d foo bar was complaining about directory bar already
405     existing, even though it should only care about foo.
407 kaz 1.41 The remove command now requires explicit -R option to recursively remove
408 kaz 1.42 a directory. It has more detailed error reporting.
409 kaz 1.41
410 kaz 1.43 The move command has better error reporting.
412 kaz 1.39 Release 0.9, 2002-03-14:
413 kaz 1.37
414     Bugfix: the .cvsignore file is now subject to tagging, status, etc,
415     (unless --nometa is specified, of course).
416 kaz 1.38
417     The mcvs filt command takes -r <revision> or -D <date> parameters.
418     This means to retrieve the MAP file as of the specified revision or
419     date and use that mapping to perform the filtering translation,
420     rather than using MAP-LOCAL.
421 kaz 1.39
422     The mcvs update command takes filename arguments now and also
423     supports the -p option.
424 kaz 1.37
425 kaz 1.36 Release 0.8, 2002-03-13:
426 kaz 1.28
427 kaz 1.29 Bug fixed in mcvs add; it was not ignoring files that are already
428     listed as :ignore in MCVS/TYPES.
430 kaz 1.34 Bug fixed in mcvs move: a target with a trailing slash is now treated
431     as a directory (if it does not already exist and is a non-directory).
433 kaz 1.30 The -d option of mcvs checkout can now be used to override the checkout
434     directory, which is normally the same as the module name.
436 kaz 1.31 The global options --version, --help, -q, -Q and -e are now supported.
438 kaz 1.33 New global options --error-continue and --error-terminate to disable
439     interactive error handling in two different ways.
441 kaz 1.32 Log level of many messages has changed; many messages have been
442     relegated to debug level.
444 kaz 1.35 The import command now creates a .cvsignore file containing the name
445     MAP-LOCAL.
447 kaz 1.24 Release 0.7, 2002-03-09:
449 kaz 1.27 The import command collects a list of the file suffixes and brings up
450     a text editor to allow the user to edit their CVS keyword expansion
451     behavior. This information is kept in a new metafile called TYPES. The
452     add command also updates TYPES; it identifies any suffixes which are new,
453     and brings up an editor. The F- files now carry suffixes, which
454     simplifies interfacing with CVS, and also allows cvswrappers to work.
456     Recursive add works (mcvs add -R ...).
458     New command line option --nometa allows metafiles to be excluded from
459     diff, tag, and other commands; without the option they are inserted
460     into the list of files to be processed.
461 kaz 1.25
462 kaz 1.27 The commit option now takes an optional list of files or directories,
463     just like tag, diff, and others.
464 kaz 1.26
465 kaz 1.23 Release 0.6, 2002-02-16:
466 kaz 1.19
467 kaz 1.27 The add operation was horribly broken in 0.5, it is fixed.
468 kaz 1.21
469 kaz 1.27 User can interactively select whether to clobber local files or leave
470     everything alone. Effects on the mapping file of a mcvs move are undone,
471     if the restructuring is rolled back, or raises a condition that leads
472     to termination.
474     Meta-CVS now keeps a new meta-file called MCVS/TYPES. This is created
475     during import, and specifies the CVS keyword expansion mode for files
476     having given suffixes, and can also tell Meta-CVS to ignore certain files
477     when importing or adding.
478 kaz 1.22
479 kaz 1.18 Release 0.5, 2002-02-10:
480 kaz 1.14
481 kaz 1.27 Much improved error handling. Filesystem rearranging code performs
482     sanity checks to prevent adds and moves from accidentally clobbering
483     local files. A rearranging gone bad can be rolled back. Effects
484     of a failed mcvs add can also be rolled back.
485 kaz 1.14
486 kaz 1.27 MAP-LOCAL is now sorted in the same way as MAP.
487 kaz 1.15
488 kaz 1.13 Release 0.4, 2002-02-04:
489 kaz 1.10
490 kaz 1.27 CVS is invoked using internal function resembling the xargs utility,
491     which ensures that multiple command lines are generated if necessary to
492     avoid surpassing the operating system limit on argument and environment
493     vector size. This is important when someone wants to diff or stat a
494     subdirectory, which requires Meta-CVS to pick out the individual files
495     at the CVS level.
497     The tag, log, status and annotate commands are now available.
499     The MAP file is sorted on F- file names now, not path names. This
500     improves merging, since files do not move within the file when
501     they are renamed.
502 kaz 1.12
503 kaz 1.5 Release 0.3, 2002-02-02:
505 kaz 1.27 Process termination done is properly in top level handler, by a nonlocal
506     exit. The program properly indicates failed termination when it exits
507     due to an error condition.
509     Corrections are made in the command line option processing. If z is an
510     option that takes an argument, and the argument is -zx, then x is
511     treated as the argument to the option. Long options arguments are
512     recognized properly, according to the --opt=arg convention. The option
513     processing is restructured. Most of the commands now take the
514     appropriate cvs command-specific options.
516     The update algorithm performs dupe checking over the map, which could
517     happen during a merge.
519     Some more bugfixing has been done to the move command. It was still not
520     handling right some cases of an unversioned file being clobbered. Also,
521     it wasn't renaming a directory containing just one file.
523     I did some performance investigation for larger file sets, and
524     ended up rewriting the code that computes filesystem restructuring
525     changes and map duplicates.
526 kaz 1.5
527 kaz 1.4 Release 0.2, 2002-01-30:
529 kaz 1.27 Changed official name from MCVS to Meta-CVS. The move command now
530     performs some filesystem tests so it does the right thing when a versioned
531     file is moved over a non-versioned file, or when a file is moved into
532     a directory not known to Meta-CVS. Factored out reading and writing of
533     map files into functions.
534 kaz 1.4
535 kaz 1.2 Release 0.1, 2002-01-28:
537 kaz 1.27 Support for mcvs diff -u added. The -R option works for mcvs add command.
538     Bug fixed in mcvs mv command; it wasn't working analogously to the Unix
539     mv command when copying a directory to an existing directory.
540 kaz 1.2
541     Release 0.0, 2002-01-27:
542 kaz 1.1
543 kaz 1.27 This is alpha software. It is not complete, and lacks documentation.
544     However, it is already usable in its present state and is being used for
545     version control by its author. If you can program in Common Lisp and would
546     like to help, take a look through the TODO file. Send me patches, ideas,
547     feature requests.

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