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revision 1.127 by kaz, Mon Oct 7 03:53:17 2002 UTC revision 1.127.2.64 by kaz, Tue Jan 27 07:32:13 2004 UTC
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1                         Release Notes for Meta-CVS                         Release Notes for Meta-CVS
2    
3    Release 1.0.11, 2004-0?-??:
4    
5      Fixes breakage of list-branches command introduced in last release.
6    
7      Fixes failures in grab command when pulling new baseline over
8      partial sandbox. Renamed symlinks, and execute permissions of files
9      were being accessed using abstract instead of real path.
10    
11    Release 1.0.10, 2004-01-09:
12    
13      Builds on CLISP 2.32. The lb command no longer produces bogus warning
14      when working copy is sticky to a version tag.
15    
16    Release 1.0.9, 2003-11-24:
17    
18      Failures to open terminal for reasons other than non-existence
19      of the object are handled (e.g. ``no such device'', etc).
20    
21      The --nometa option now works properly in those commands that
22      operate on the whole project when no file arguments are given
23      (tag, update, commit). Also, these commands no longer implicitly
24      include the meta files when file arguments *are* given.
25      These files can be included explicitly with the --meta global option.
26    
27    Release 1.0.8, 2003-06-03:
28    
29      The Cygwin /dev/tty problem is partially addressed. The program
30      won't fail if /dev does not exist, but emits a warning message,
31      and disables interactive error handling. The workaround is to use
32      ``mkdir /dev''. This is a CLISP issue; its OPEN function expects the
33      full path to a file to actually exist, but on Cygwin, there are fake
34      /dev/* paths even though /dev does not exist.  If a real /dev directory
35      does in fact exist, it does not interfere with these magic paths.
36    
37      The ``mcvs fi'' command no longer performs expansion on F- names
38      that are preceded by a slash.
39    
40    Release 1.0.7, 2003-04-23:
41    
42      New commands sync-to-cvs and sync-from-cvs expose the hard link
43      synchronization algorithm.
44    
45      Revamped error recovery logic. To continue in an error situation now
46      consistently means ``take the bold action that may erase data''
47      or ``proceed in the most obvious way to finish the specified job''.
48      It never means ``roll back the operation and bail'', which was
49      confusing.
50    
51      Termination is no longer unsafe; the `T' menu command, and the
52      equivalent --error-terminate global option perform all necessary
53      restoration and cleanup.
54    
55      Errors that have more information to print, like a list of files or
56      whatever, now indicate it in a standard way which translates to the
57      `I' menu command.
58    
59      Chatter output goes to standard error rather than standard output,
60      as do all error messages.
61    
62      The interactive error menu now talks to the user using the controlling
63      tty, meaning that it will work even if the input or output of the
64      mcvs command are redirected. If no controlling tty is available,
65      then interactive error handling is disabled; the default behavior
66      is then like --error-terminate but can of course be overridden by
67      --error-continue.
68    
69    Release 1.0.6, 2003-04-14:
70    
71      The create command detects the existence of text editor backup files (or
72      other junk) in the MCVS directory after the editor is invoked on the
73      TYPES file. The user is prompted regarding their removal. If these files are
74      not removed, cvs import will bring them into the repository.
75    
76      When Meta-CVS has to split a large CVS command into two or more
77      invocations with shorter argument lists, it now does not stop when one of
78      these invocations is unsuccessful; it does all of them, and combines
79      their termination indications by a logical AND. There was a bug in this
80      logic also which caused, upon termination failure, a cvs command to be
81      repeated for the same list of files.
82    
83      Synchronization logic has been revamped. Unnecessary synchronizations
84      have been removed, which will make some commands run faster.
85      Synchronizations now have specific directions; for instance before
86      a CVS commit or update, changes are pushed from the directory tree to the MCVS
87      directory only, and after the CVS operation, in the reverse direction only.
88    
89      Meta-CVS will no longer re-create missing F- files by linking from the
90      directory tree. Doing this causes two problems. One is that if a user
91      manually removes a F- file and do ``mcvs up'', she wants CVS to fetch a clean
92      copy and push it into the tree. She does not want the file to be restored
93      from the tree prior to the CVS update. Secondly, sometimes CVS itself
94      removes files. If we re-create the files, CVS will consider them to
95      be ``in the way''.
96    
97      Failures to read from the MAP or MAP-LOCAL files are treated as interactive,
98      continuable errors. By continuing, the user agrees that the behavior will
99      be as if an empty map were read.
100    
101      The grab command uses less memory for performing move analysis.
102    
103    Release 1.0.5, 2003-02-25:
104    
105      Bugfix: some one-argument command line options of CVS must be
106      specifies as a single parameter, with no separation between the
107      option letter and the argument characters. For example:
108    
109        cvs log -r rev-1::rev-2      # invalid
110        cvs log -rrev1::rev2         # correct
111    
112      Meta-CVS accepts either syntax, but it was generating the first form
113      when calling CVS. Now, *all* one-letter options that have an argument
114      are formatted in the second manner.
115    
116      Bugfix: one more waitpid() issue was fixed; on fast machines, under
117      Linux, it was observed that from time to time Meta-CVS would get
118      a -1/ECHILD when waiting for the CVS process.
119    
120    Release 1.0.4, 2003-02-20:
121    
122      Fix remaining occurences of the CVS ``No child processes'' abort
123      problem, affecting the list-branches command, merge command
124      and the -r option of the filt command.
125    
126    Release 1.0.3, 2003-02-12:
127    
128      ! THIS RELEASE IS WITHDRAWN. It was accidentally created from the
129      ! experimental main trunk of the Meta-CVS codebase, rather than
130      ! the 1.0 branch. But 1.0.4 does contain all of the changes
131      ! described here.
132    
133      Fix for the CVS ``No child processes'' abort problem. It turns out
134      that CLISP sets the signal handling action for the SIGCHLD signal
135      to SIG_IGN, which is inherited by child processes across the
136      fork() and execvp() calls used in our mcvs_spawn() function.
137      We correct the problem by resetting the signal handler to SIG_DFL
138      just before executing the new process image.
139    
140      New feature, --up option. The argument is a nonnegative integer value
141      (default is zero) which specifies how many sandbox nesting levels to
142      escape out of when locating the sandbox root. This helps work with
143      nested Meta-CVS sandboxes.
144    
145    Release 1.0.2, 2003-02-10:
146    
147      Bugfix in waitpid logic in the C library for running external processes;
148      we were not dealing with an interrupted waitpid.
149    
150      Behavior of mcvs tag is changed: when there are no filename arguments,
151      the whole tree is tagged including the metafiles. In other words, it
152      now works like the commit command.
153    
154    Release 1.0.1, 2003-01-30:
155    
156      Hard link sync optimization: update of a subset of files, commit, and
157      other operations like log and diff don't need to synchronize all
158      hard links, just the ones operated on.
159    
160      The merge and remerge commands support -k option for overriding
161      CVS keyword expansion mode.
162    
163      Fixes to getcwd error handling.
164    
165      Improvement in install.sh script's logic for locating CLISP installation
166      directory.
167    
168    Release 1.0, 2003-01-01:
169    
170      NOTE: It's not possible to upgrade to this release via mcvs-upgrade,
171      because it adds some new C functions to the Lisp executable.
172    
173      Security fix: read-time evaluation was not suppressed when reading
174      structured data, like MCVS/MAP and MCVS/TYPES. This means that it
175      was possible for Alice to check in something that would execute
176      arbitrary code on Bob's computer.
177    
178      Optimization: use fork and exec to launch CVS rather than CLISP's
179      run-program function, which indirects through the shell interpreter.
180      (On Cygwin, the spawnvp function is used).
181    
182      Performance fix: stat() was being called superfluously by the
183      hard synchronization code, twice for each file.
184    
185      Build fix: install.sh works when CLISP executable is called ``lisp.exe'',
186      which is the case under Cygwin with newer CLISP releases.
187    
188    Release 0.99, 2002-11-17:
189    
190      New link command for creating symbolic links.
191    
192      Global option -n (dry run---don't modify filesystem) is processed
193      internally now, not just passed to CVS.
194    
195      Failure to invoke text editor is handled.
196    
197      The -r option of filt is fixed; it has been broken since the change to the
198      new MAP format, because it was reading the raw map representation, not
199      passing it through the right conversion steps that are needed now.
200    
201      Bugfix to purge and remap commands: they were fooled by CVS-generated
202      files in the MCVS/CVS directory. Specifically, files having F- names, and a
203      the suffix ,t.
204    
205      Bugfix to add logic in directory restructuring: there was the possibility
206      of mistakingly taking a clobbered local file to be a new local version of
207      the added file, instead of replacing it. This could happen if the local
208      file had a future timestamp relative to the one coming from the repository.
209    
210      The prop command does not synchronize or write out map if no options are
211      specified.
212    
213      Help text added for move and branch commands. Help text for grab rewritten.
214    
215      The CVSEDITOR and VISUAL environment variables are now checked, not
216      only EDITOR.
217    
218    Release 0.98, 2002-10-13:
219    
220      The prop command was mistakenly reading from MAP-LOCAL and writing to MAP,
221      which could cause information loss if the two differ. It now reads from MAP
222      and writes to MAP. (The property changes propagate to MAP-LOCAL by the
223      update operation invoked by prop, as before).
224    
225      Invocation of external programs included in debug trace.
226    
227      The filt command does not filter F- names if they are immediately preceded by
228      the MCVS/ prefix; such occurences are clearly concrete, sandbox-relative
229      references to the actual F- links, rather than abstract references.
230    
231      The update command now supports the -C option, to fetch the repository
232      copy, throwing away local changes. It also now honors the --metaonly
233      and --nometa options.
234    
235      The export command has been added, for checking out documents without creating
236      a working copy (no MCVS directory in the root of the checkout).
237    
238      The watch command has been added. Note that its syntax differs from that
239      of CVS.
240    
241      The watchers, editors, edit, and unedit commands have been added.
242    
243      A script called mcvs-upgrade is now included, and installs alongside the mcvs
244      script.  This allows the Meta-CVS Lisp image to recompile and patch itself,
245      giving users of binary distributions an easy way to upgrade from source
246      code.
247    
248  Release 0.97, 2002-10-06:  Release 0.97, 2002-10-06:
249    
250    Meta-CVS now builds and runs on Microsoft Windows, under Cygwin    Meta-CVS now builds and runs on Microsoft Windows, under Cygwin

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