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revision 1.127 by kaz, Mon Oct 7 03:53:17 2002 UTC revision 1.127.2.63 by kaz, Tue Jan 27 06:43:17 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      Fix breakage of list-branches command introduced in last release.
6    
7    Release 1.0.10, 2004-01-09:
8    
9      Builds on CLISP 2.32. The lb command no longer produces bogus warning
10      when working copy is sticky to a version tag.
11    
12    Release 1.0.9, 2003-11-24:
13    
14      Failures to open terminal for reasons other than non-existence
15      of the object are handled (e.g. ``no such device'', etc).
16    
17      The --nometa option now works properly in those commands that
18      operate on the whole project when no file arguments are given
19      (tag, update, commit). Also, these commands no longer implicitly
20      include the meta files when file arguments *are* given.
21      These files can be included explicitly with the --meta global option.
22    
23    Release 1.0.8, 2003-06-03:
24    
25      The Cygwin /dev/tty problem is partially addressed. The program
26      won't fail if /dev does not exist, but emits a warning message,
27      and disables interactive error handling. The workaround is to use
28      ``mkdir /dev''. This is a CLISP issue; its OPEN function expects the
29      full path to a file to actually exist, but on Cygwin, there are fake
30      /dev/* paths even though /dev does not exist.  If a real /dev directory
31      does in fact exist, it does not interfere with these magic paths.
32    
33      The ``mcvs fi'' command no longer performs expansion on F- names
34      that are preceded by a slash.
35    
36    Release 1.0.7, 2003-04-23:
37    
38      New commands sync-to-cvs and sync-from-cvs expose the hard link
39      synchronization algorithm.
40    
41      Revamped error recovery logic. To continue in an error situation now
42      consistently means ``take the bold action that may erase data''
43      or ``proceed in the most obvious way to finish the specified job''.
44      It never means ``roll back the operation and bail'', which was
45      confusing.
46    
47      Termination is no longer unsafe; the `T' menu command, and the
48      equivalent --error-terminate global option perform all necessary
49      restoration and cleanup.
50    
51      Errors that have more information to print, like a list of files or
52      whatever, now indicate it in a standard way which translates to the
53      `I' menu command.
54    
55      Chatter output goes to standard error rather than standard output,
56      as do all error messages.
57    
58      The interactive error menu now talks to the user using the controlling
59      tty, meaning that it will work even if the input or output of the
60      mcvs command are redirected. If no controlling tty is available,
61      then interactive error handling is disabled; the default behavior
62      is then like --error-terminate but can of course be overridden by
63      --error-continue.
64    
65    Release 1.0.6, 2003-04-14:
66    
67      The create command detects the existence of text editor backup files (or
68      other junk) in the MCVS directory after the editor is invoked on the
69      TYPES file. The user is prompted regarding their removal. If these files are
70      not removed, cvs import will bring them into the repository.
71    
72      When Meta-CVS has to split a large CVS command into two or more
73      invocations with shorter argument lists, it now does not stop when one of
74      these invocations is unsuccessful; it does all of them, and combines
75      their termination indications by a logical AND. There was a bug in this
76      logic also which caused, upon termination failure, a cvs command to be
77      repeated for the same list of files.
78    
79      Synchronization logic has been revamped. Unnecessary synchronizations
80      have been removed, which will make some commands run faster.
81      Synchronizations now have specific directions; for instance before
82      a CVS commit or update, changes are pushed from the directory tree to the MCVS
83      directory only, and after the CVS operation, in the reverse direction only.
84    
85      Meta-CVS will no longer re-create missing F- files by linking from the
86      directory tree. Doing this causes two problems. One is that if a user
87      manually removes a F- file and do ``mcvs up'', she wants CVS to fetch a clean
88      copy and push it into the tree. She does not want the file to be restored
89      from the tree prior to the CVS update. Secondly, sometimes CVS itself
90      removes files. If we re-create the files, CVS will consider them to
91      be ``in the way''.
92    
93      Failures to read from the MAP or MAP-LOCAL files are treated as interactive,
94      continuable errors. By continuing, the user agrees that the behavior will
95      be as if an empty map were read.
96    
97      The grab command uses less memory for performing move analysis.
98    
99    Release 1.0.5, 2003-02-25:
100    
101      Bugfix: some one-argument command line options of CVS must be
102      specifies as a single parameter, with no separation between the
103      option letter and the argument characters. For example:
104    
105        cvs log -r rev-1::rev-2      # invalid
106        cvs log -rrev1::rev2         # correct
107    
108      Meta-CVS accepts either syntax, but it was generating the first form
109      when calling CVS. Now, *all* one-letter options that have an argument
110      are formatted in the second manner.
111    
112      Bugfix: one more waitpid() issue was fixed; on fast machines, under
113      Linux, it was observed that from time to time Meta-CVS would get
114      a -1/ECHILD when waiting for the CVS process.
115    
116    Release 1.0.4, 2003-02-20:
117    
118      Fix remaining occurences of the CVS ``No child processes'' abort
119      problem, affecting the list-branches command, merge command
120      and the -r option of the filt command.
121    
122    Release 1.0.3, 2003-02-12:
123    
124      ! THIS RELEASE IS WITHDRAWN. It was accidentally created from the
125      ! experimental main trunk of the Meta-CVS codebase, rather than
126      ! the 1.0 branch. But 1.0.4 does contain all of the changes
127      ! described here.
128    
129      Fix for the CVS ``No child processes'' abort problem. It turns out
130      that CLISP sets the signal handling action for the SIGCHLD signal
131      to SIG_IGN, which is inherited by child processes across the
132      fork() and execvp() calls used in our mcvs_spawn() function.
133      We correct the problem by resetting the signal handler to SIG_DFL
134      just before executing the new process image.
135    
136      New feature, --up option. The argument is a nonnegative integer value
137      (default is zero) which specifies how many sandbox nesting levels to
138      escape out of when locating the sandbox root. This helps work with
139      nested Meta-CVS sandboxes.
140    
141    Release 1.0.2, 2003-02-10:
142    
143      Bugfix in waitpid logic in the C library for running external processes;
144      we were not dealing with an interrupted waitpid.
145    
146      Behavior of mcvs tag is changed: when there are no filename arguments,
147      the whole tree is tagged including the metafiles. In other words, it
148      now works like the commit command.
149    
150    Release 1.0.1, 2003-01-30:
151    
152      Hard link sync optimization: update of a subset of files, commit, and
153      other operations like log and diff don't need to synchronize all
154      hard links, just the ones operated on.
155    
156      The merge and remerge commands support -k option for overriding
157      CVS keyword expansion mode.
158    
159      Fixes to getcwd error handling.
160    
161      Improvement in install.sh script's logic for locating CLISP installation
162      directory.
163    
164    Release 1.0, 2003-01-01:
165    
166      NOTE: It's not possible to upgrade to this release via mcvs-upgrade,
167      because it adds some new C functions to the Lisp executable.
168    
169      Security fix: read-time evaluation was not suppressed when reading
170      structured data, like MCVS/MAP and MCVS/TYPES. This means that it
171      was possible for Alice to check in something that would execute
172      arbitrary code on Bob's computer.
173    
174      Optimization: use fork and exec to launch CVS rather than CLISP's
175      run-program function, which indirects through the shell interpreter.
176      (On Cygwin, the spawnvp function is used).
177    
178      Performance fix: stat() was being called superfluously by the
179      hard synchronization code, twice for each file.
180    
181      Build fix: install.sh works when CLISP executable is called ``lisp.exe'',
182      which is the case under Cygwin with newer CLISP releases.
183    
184    Release 0.99, 2002-11-17:
185    
186      New link command for creating symbolic links.
187    
188      Global option -n (dry run---don't modify filesystem) is processed
189      internally now, not just passed to CVS.
190    
191      Failure to invoke text editor is handled.
192    
193      The -r option of filt is fixed; it has been broken since the change to the
194      new MAP format, because it was reading the raw map representation, not
195      passing it through the right conversion steps that are needed now.
196    
197      Bugfix to purge and remap commands: they were fooled by CVS-generated
198      files in the MCVS/CVS directory. Specifically, files having F- names, and a
199      the suffix ,t.
200    
201      Bugfix to add logic in directory restructuring: there was the possibility
202      of mistakingly taking a clobbered local file to be a new local version of
203      the added file, instead of replacing it. This could happen if the local
204      file had a future timestamp relative to the one coming from the repository.
205    
206      The prop command does not synchronize or write out map if no options are
207      specified.
208    
209      Help text added for move and branch commands. Help text for grab rewritten.
210    
211      The CVSEDITOR and VISUAL environment variables are now checked, not
212      only EDITOR.
213    
214    Release 0.98, 2002-10-13:
215    
216      The prop command was mistakenly reading from MAP-LOCAL and writing to MAP,
217      which could cause information loss if the two differ. It now reads from MAP
218      and writes to MAP. (The property changes propagate to MAP-LOCAL by the
219      update operation invoked by prop, as before).
220    
221      Invocation of external programs included in debug trace.
222    
223      The filt command does not filter F- names if they are immediately preceded by
224      the MCVS/ prefix; such occurences are clearly concrete, sandbox-relative
225      references to the actual F- links, rather than abstract references.
226    
227      The update command now supports the -C option, to fetch the repository
228      copy, throwing away local changes. It also now honors the --metaonly
229      and --nometa options.
230    
231      The export command has been added, for checking out documents without creating
232      a working copy (no MCVS directory in the root of the checkout).
233    
234      The watch command has been added. Note that its syntax differs from that
235      of CVS.
236    
237      The watchers, editors, edit, and unedit commands have been added.
238    
239      A script called mcvs-upgrade is now included, and installs alongside the mcvs
240      script.  This allows the Meta-CVS Lisp image to recompile and patch itself,
241      giving users of binary distributions an easy way to upgrade from source
242      code.
243    
244  Release 0.97, 2002-10-06:  Release 0.97, 2002-10-06:
245    
246    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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