Thanks for reporting this issue. There is indeed a problem in GraphicsMagick. I think that I have a good solution now (now in CVS HEAD) and there will be test cases to make sure that this basic functionality always works in the future.

Bob

On Sat, 27 Feb 2010, Vladimir Stavrinov wrote:

Package: graphicsmagick
Version: 1.3.11-1
Severity: normal

There are something wrong with "convert" utility. Few examples.

This works:

cat /usr/share/doc/graphicsmagick/www/images/examples.jpg | gm display -

This does not work:

cat /usr/share/doc/graphicsmagick/www/images/examples.jpg | gm convert - - | gm 
display -
gm convert: Empty input file (/tmp/gm78BblH).

And this hangs up forever:

gm convert /usr/share/doc/graphicsmagick/www/images/examples.jpg - | gm display 
-

There was no such problems with 1.3.8-1 version.


-- System Information:
Debian Release: squeeze/sid
 APT prefers unstable
 APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable')
Architecture: i386 (x86_64)

Kernel: Linux 2.6.32-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=C, LC_CTYPE=ru_RU.KOI8-R (charmap=KOI8-R)
Shell: /bin/sh linked to /bin/bash

Versions of packages graphicsmagick depends on:
ii  libbz2-1.0              1.0.5-4          high-quality block-sorting file co
ii  libc6                   2.10.2-5         Embedded GNU C Library: Shared lib
ii  libfreetype6            2.3.11-1         FreeType 2 font engine, shared lib
ii  libgomp1                4.4.3-3          GCC OpenMP (GOMP) support library
ii  libgraphicsmagick3      1.3.11-1         format-independent image processin
ii  libice6                 2:1.0.6-1        X11 Inter-Client Exchange library
ii  libjasper1              1.900.1-7        The JasPer JPEG-2000 runtime libra
ii  libjpeg62               6b-16.1          The Independent JPEG Group's JPEG
ii  liblcms1                1.18.dfsg-1.2+b1 Color management library
ii  libltdl7                2.2.6b-2         A system independent dlopen wrappe
ii  libpng12-0              1.2.42-2         PNG library - runtime
ii  libsm6                  2:1.1.1-1        X11 Session Management library
ii  libtiff4                3.9.2-3+b1       Tag Image File Format (TIFF) libra
ii  libwmf0.2-7             0.2.8.4-6.1      Windows metafile conversion librar
ii  libx11-6                2:1.3.3-1        X11 client-side library
ii  libxext6                2:1.1.1-2        X11 miscellaneous extension librar
ii  libxml2                 2.7.6.dfsg-2+b1  GNOME XML library
ii  zlib1g                  1:1.2.3.4.dfsg-3 compression library - runtime

graphicsmagick recommends no packages.

Versions of packages graphicsmagick suggests:
pn  graphicsmagick-dbg            <none>     (no description available)

-- no debconf information




--
Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/



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