[ANNOUNCEMENT] Updated: rcs-5.9.2

Thu Jul 3 18:01:00 GMT 2014

This release brings RCS to version 5.9.2 for both architectures and
includes a patch for the RCS work file corruption problem that has been
discussed on the Cygwin mailing list and reported to rcs-bugs:
http://article.gmane.org/gmane.comp.version-control.rcs.bugs/2772
Thanks to Don Hatch for a demonstrator script and Peter Wagemans for an
analysis of the failure mode.
I'm taking over on request from Dr. Volker Zell, the previous
maintainer. Thank you, Volker.
--8<---------------cut here---------------start------------->8---
NEWS for GNU RCS (Revision Control System)
- 5.9.2 | 2013年11月28日
 - bugfixes
 - avoid possibly failing command in backticks
 Some versions of Solaris /bin/sh would cause the extract-help
 build script to exit failurefully when the grep command in the
 backticks failed (in the presence of "set -e"). Sigh.
 - handle low-memory situations like RCS 5.7 (mostly)
 For reading comma-v files, RCS 5.7 tries mmap(2), in-core
 snarfing, and stdio access, falling back to slower methods
 on failure of the faster method. RCS 5.8 maintained the order,
 but did not fall back; on failure, it gave up immediately.
 This change was originally viewed as a feature, but lately it
 seemed more like a bug.
 Now, RCS 5.7 behavior is for the most part restored. The
 exception is when env var ‘RCS_MEM_LIMIT’ is set; in that case,
 failure of a fast method does not fall back to the slower one.
 - default for env var ‘RCS_MEM_LIMIT’ relaxed
 This used to be 256 kilobytes, a reasonable value a long time
 ago, but ridiculously low nowadays. Now, it is "unlimited",
 which is more in line w/ the GNU philosophy, anyway:
 (info "(standards) Semantics")
 Since the env var is mostly intended for testing RCS, you can
 normally leave it unset. (Probably it will be removed in a
 future release.)
 - maintenance tools updated
 - automake (GNU automake) 1.14
 - gnulib-tool (GNU gnulib 2013年11月28日 08:46:06) 0.1.21-37f8a
- 5.9.1 | 2013年10月04日
 - bugfixes
 - specify ‘diff --binary’ consistently for non-POSIX systems
 On non-POSIX systems, in some cases, ‘rcs frob’ used to omit
 ‘--binary’ from the command-line to the underlying diff(1).
 Now, that is done in all cases.
 - portability fixes
 - avoid ‘grep -q’
 GNU grep understands ‘grep -q’ but some others do not.
 (info "(autoconf) Limitations of Usual Tools")
 - avoid ‘$<’ in makefile
 GNU make understands ‘$<’ but some others do not.
 (info "(autoconf) $< in Ordinary Make Rules")
 - avoid backslash in backticks
 The /bin/sh scripts used in "make" and "make check" now avoid
 using a backslash in backticks, which can cause problems for
 Solaris 9 /bin/sh (and maybe other /bin/sh implementations).
 - ‘PROGRAM --help’ shows home page / "gethelp" info
 This is for compliance w/ the GNU coding standards.
 (info "(standards) --help")
 - maintenance tools updated
 - automake (GNU automake) 1.13.4
 - gnulib-tool (GNU gnulib 2013年10月03日 04:59:38) 0.0.8036-28df8
- 5.9.0 | 2013年05月06日
 - distribution now .tar.lz and .tar.xz
 If you have GNU tar, you can use "tar xf" and it will DTRT.
 If not, you can use "lzip -dc TARBALL | tar xf -" to unpack
 the .tar.lz, or "xz -dc TARBALL | tar xf -" for the .tar.xz.
 - planned retirement
 - configure option ‘--enable-compat2’
 This option enables reading of files written by RCS 2.x (before
 RCS was GNU, even), but the file format became obsolete in 1982.
 Support for it WILL BE REMOVED in a near future GNU RCS release.
 - common option ‘-V’
 This option is obsoleted by ‘--version’ (since 5.8, 2011年08月30日).
 Support for it WILL BE REMOVED in some future GNU RCS release.
 Its use now produces a warning to stderr.
 Please note that ‘-VN’ (N ∈ {3,4,5}) is a separate issue.
 - bugs fixed
 - ‘rcsmerge --help’ mentions ‘-A’, ‘-E’, ‘-e’
 These options are accepted and internally passed to diff3(1).
 - ‘ident -VN’ and ‘merge -VN’ now signal error
 For these commands, the argument to ‘-V’ has no meaning.
 Previously, such invocations would display version info,
 ignoring the arg. Now they signal a "bad option" error.
 - new features
 - ident(1) recognizes Subversion "fixed-width keyword syntax"
 In addition to the normal keyword pattern, for Subversion 1.2
 (and later) compatibility, ident(1) also recognizes patterns
 having one of the forms:
 $KEYWORD:: TEXT $
 ;; two colons and space after keyword
 ;; space before ending $
 $KEYWORD:: TEXT#$
 ;; two colons and space after keyword
 ;; hash before ending $
 - new co(1) option ‘-S’ for "self-same" mode
 In this mode, the owner of a lock is unimportant, just that it
 exists. Effectively, this prevents you from checking out the
 same revision twice.
 $ whoami
 ttn
 $ co -l -f z
 RCS/z,v --> z
 revision 1.1 (locked)
 done
 $ co -S -l -f z
 RCS/z,v --> z
 co: RCS/z,v: Revision 1.1 is already locked by ttn.
 - several RCS commands "internalized" into rcs(1)
 As part of an ongoing effort to modernize the command-line
 interface of GNU RCS, the previously standalone programs:
 ci, co, rcs, rcsclean, rcsdiff, rcsmerge, rlog
 can now be invoked as "rcs PROGRAM". In this case, we call
 PROGRAM a "command", and also provide some aliases. E.g., you
 can type "rcs diff" in addition to "rcs rcsdiff" (and "rcsdiff",
 of course). We plan to support standalone (w/o "rcs" prefix)
 invocation from the shell at least through the 5.x series of
 releases -- not indefinitely, but for a good while, yet.
 The rcs(1) program itself now supports ‘--commands’ to list all
 the commands, ‘--aliases’ to list their aliases, as well as
 ‘--help COMAMND’ to show the help for COMMAND.
 Note that programs ident(1) and merge(1) remain standalone.
 Lastly, in the manual, section "Invoking rcs" now describes both
 "modern" and "legacy" usages. Also, the internalized commands
 invocations mentions both "rcs COMMAND" and "PROGRAM" styles.
 - ‘--help’ output includes a one-line description
 E.g., "merge --help" says: "Three-way file merge".
 - most long options can be recognized if partially specified
 With the exception of "rcs --help COMMAND", where "--help" must
 be spelled out in full, all long options can now be recognized
 even if partially specified. For example, "rcs --al" is
 recognized as "rcs --aliases".
 - updated portability
 Several more Gnulib (http://www.gnu.org/software/gnulib) modules
 are now in use.
 - new cross-compilation support
 The configure script now assigns "pessimistic defaults" when
 cross-compiling. See new section "cross-compilation" in README.
 - effects of ‘-VN’ (N ∈ {3,4,5}) documented
 See (info "(rcs) Misc common options").
 - maintenance tools updated
 - gnulib-tool (GNU gnulib 2013年05月01日 06:14:19) 0.0.7913-5191
--8<---------------cut here---------------end--------------->8---
Regards,
Achim.
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