[1.7] Updated: cygwin-1.7.0-46

Corinna Vinschen corinna-cygwin@cygwin.com
Tue Apr 14 17:07:00 GMT 2009

Hi folks,

I just uploaded a new Cygwin 1.7 test release, 1.7.0-46.

                        IMPORTANT NOTE

The -45 test release already came with a major change in terms of support
for native character sets.  I added a new chapter to the documentation
to explain the new capabilities and how to use them.  Along the same
lines the CYGWIN=codepage environment variable option has gone away.
Please read http://cygwin.com/1.7/cygwin-ug-net/setup-locale.html and

This -46 release has an important additional change related to the
character set used for the Windows Console window in which a Cygwin
session gets started.  This is explained in the new User's Guide section

Please, see the "What's new" section below for more details!

Cygwin 1.7 is a major jump from Cygwin 1.5.x.  The list with all
changes related to Cygwin 1.5.25 is attached below.

If nothing goes overly wrong, the official 1.7.1 release goes public
within the next two and a half months.

Just download http://cygwin.com/setup-1.7.exe and use that setup tool
to install Cygwin 1.7.  As usual, please report bugs and problems to
the mailing list cygwin AT cygwin DOT com.

We also have a new User's Guide for 1.7, which is currently located at

We also now have new API documentation

And we have a new FAQ, though very likely not quite complete since
we still don't know what exactly *is* a FAQ related to Cygwin 1.7.

The list of user visible changes in Cygwin 1.7 compared to the old
Cygwin 1.5.25 release is NOT appended to this mail anymore, rather
it's now part of the Cygwin User's Guide:

Bug fixes and extensions to the documentation in the form of patches
to the source SGML files are much appreciated.  The SGML sources are
located in the CVS repository under the winsup/doc directory, for
example here:

Same goes for Cygwin patches in general, of course.

This is still a TEST release.  Don't use in critical production

Nevertheless I'd like to encourage everyone to give 1.7 a shot.  Due to
internal changes it is possible to install a 1.7 release in parallel to
a 1.5 release and even run 1.7 processes in parallel to 1.5 processes.

* The processes will not know about each other!  Any try to interact
* between 1.7-based and 1.5-based processes will lead to, at least, funny
* results.

To install a 1.7 release in parallel to a 1.5 release, all you have
to do is to choose another root directory (for instance: C:\cygwin-1.7)
in setup-1.7's "Choose Installation Directory" dialog.

* NOTE: Due to the way setup-1.7 works, you have to change the directory
* right the first time you visit this dialog!  If you pressed the "Next"
* button and then "Back" again, it's already too late and setup-1.7 will
* create a broken 1.7 install.  If you pressed "Next" by mistake, exit
* setup-1.7 and start it again.

What's new in contrast to 1.7.0-45

- JIS charset has been *DROPPED*.  It's a charset rather used for emails
  and it doesn't work very nicely with the underlying WIndows conversion
  functions.  Given that eucJP as well as SJIS are supported, that
  shouldn't be much of a problem.  Please note that this only affects
  OS-related functionality.  Applications built with JIS support will
  still be able to use it, unless it tries to use it for filenames or

- Change handling of Console character set.  It's only set once when
  the first Cygwin process of a Cygwin process tree in a Windows cosole
  starts, according to the environment variable settings of $LC_ALL,
  $LC_CTYPE, or $LANG.  For details, see

- A change in isupper/islower ctype functions and macros allows newly built
  applications to recognize non-case characters in singlebyte charsets for
  non-cased languages (Arabic, Hebrew, Thai) correctly.  Older applications
  will recognize them as uppercase and lowercase.


- Fix spurious crashes when linking against libc.a, libm.a, libpthread.a,
  libutil.a, or libresolv.a.

- Several more fixes in header files.

- Fix a bug in internationalization which could result in a broken
  environment when calling native Windows applications.

- Fix eucJP multibyte<->widechar conversion.

- Fix bug in rexec(3) function when reading ~/.netrc file.

- Catch a problem when trying to call chown(2) on some Samba shares.  This
  fixes a spurious error message in mv(1) or install(1).

- Fix a bug in unlink(2) which disallowed to move in-use files and
  directories to the bin to move them out of the way.

- Fix a bug in tzset(3) which broke strftime(3)'s %z specifier.

- Make cygcheck and strace aware of new UTF-16 symlinks.

- Fix a couple of minor incorrect character mappings in ctype functions.


- Q: How do I know that I'm running Cygwin 1.7.0-46?

  A: The `uname -v' command prints "2009-04-14 17:25"

Have fun,


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Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Developer                                mailto:cygwin@cygwin.com
Red Hat, Inc.

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