2011-12-30  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/pixel\_cache.c (AcquireCacheNexus):
    MirrorVirtualPixelMethod was broken.

2011-12-29  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - configure.ac: Improve configuration support for Open64 Compiler
    Suite: Version 4.2.5.2 compiler with OpenMP.

  - coders/tga.c (ReadTGAImage): Assume that 32-bit TGA files have
    an alpha channel, even if they are not marked as such.  Fixes
    SourceForge issue 3466908 "TGA with alpha".

  - configure.ac: Revert changeset eaa27346d8e9 which tried to avoid
    the OpenMP library being included multiple times because in some
    cases it is not included at all.

2011-12-24  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/command.c (VersionCommand): For MSVC builds, report if
    SSE or SSE2 was used in the build.

  - Release GraphicsMagick 1.3.13.

  - Update libtiff to release 4.0.0

2011-12-23  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - Update libpng to release 1.5.7

2011-12-23  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - Update lcms2 to release 2.3

2011-12-22  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - Update Automake used to 1.11.2.

2011-12-21  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - www/OpenMP.rst: Updated with new results, including 12-core
    Intel Xeon E5649 and 16-core AMD Opteron 6220 "Bulldozer" CPUs.

  - magick/studio.h: Enable building and running correctly with
    Open64 Compiler Suite: Version 4.2.5.2 compiler with OpenMP.

  - magick/command.c (BenchmarkImageCommand): Add -rawcsv option to
    benchmark to output only original data in a CSV format.

2011-12-15  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - Fix various issues noticed when cross-compiling for the
    i686-w64-mingw32 target.

2011-12-11  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/effect.c (ConvolveImage): For Q8 and Q16 builds use
    'float' rather than 'double' for computations in order to improve
    performance with some compilers.

2011-12-10  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/effect.c (ConvolveImage): Special-case grayscale images
    for better convolution performance.

2011-12-07  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/command.c (BenchmarkUsage): -stepthreads now requires an
    argument which is the increment (starting at zero) to the number
    of threads for each step.  This hastens benchmarking with a large
    number of cores.

2011-12-07  Glenn Randers-Pehrson  <glennrp@simple...>

  - coders/png.c: Eliminate use of FARDATA.  It's no longer needed
    and will no longer be supplied by png.h in libpng-1.6.0.

2011-12-06  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/command.c (BenchmarkImageCommand): Added Karp-Flatt
    metric to benchmark output.

2011-12-05  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - GraphicsMagick.spec.in: Eliminate use of deprecated BuildPrereq
    in RPM spec file.

2011-11-28  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/constitute.c (WriteImagesFile): Should set file in
    ImageInfo based on provided parameter rather than relying on it
    already being set.  File argument was not being used.

2011-11-27  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - coders/dpx.c: For packed 10 bits, datums are now represented in
    the same (reversed) order for all RGB and YCbCr formats.
    Previously YCbCr 4:4:4 formats were not swapping the word datums
    because the only real-world files encountered did not swap the
    word datums.  Resolves SourceForge bug 2057277 "DPX 10bit CbYCr
    Image seems to be wrong".

  - wand/magick\_wand.c (MagickWriteImagesFile): New function to
    append images to a provided file handle.  Resolves SourceForge
    issue 3046868 "added MagickWriteImagesFile".

  - magick/constitute.c (WriteImagesFile): New function to append
    images to a provided file handle.

  - magick/blob.c (OpenBlob): Don't rewind already open file handle
    passed to OpenBlob() since we don't know the intended state of
    this file handle, and because it prevents appending to an existing
    file.  This change is part of the fix for SourceForge issue
    3046868 "added MagickWriteImagesFile".

  - wand/magick\_wand.c (MagickSetImageSavedType): New function to
    allow specifying the storage type used when saving the file
    (rather than changing the current image characteristics).
    Resolves SourceForge patch 3110185
    "MagickGetImageSavedType()/MagickSetImageSavedType() API".
    (MagickGetImageSavedType): Return the storage type which will be
    used when the image is saved.

  - magick/annotate.c (RenderFreetype): Add support for drawing text
    using a bitmap font.  Resolves SourceForge patch 3230719 "add
    support for drawing text with bitmap font to annotate.c".

  - magick/profile.c (AppendImageProfile): Don't leak profile buffer
    while appending a chunk to an existing profile.  Resolves
    SourceForge patch 3294496 "Fix a memory leak in
    profile.c(AppendImageProfile)".

2011-11-26  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/command.c (BenchmarkImageCommand): Include the number of
    threads used in the benchmark results output.
    (BenchmarkImageCommand): New benchmark option -stepthreads to
    execute the specified command with an increasing number of threads
    to measure how an algorithm benefits from threading.
    (BenchmarkImageCommand): Fix benchmark argument parsing so it is
    not order dependent.
    (BenchmarkImageCommand): Add a speedup indication to -stepthreads
    output.

  - config/delegates.mgk.in: File names in gnuplot files need to be
    surrounded by double quotes or gnuplot parser will reject them.

2011-11-25  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/effect.c (GetMedianList): Return PixelPacket via pointer
    rather than by value.

  - version.sh: For snapshots packages, PACKAGE\_CHANGE\_DATE now uses
    a form like "snapshot-20111121" rather than "unreleased" so it is
    possible to determine the vintage of an installed snapshot.

2011-11-21  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - coders/tga.c (ReadTGAImage): Fix for poor TGA reading
    performance due to excessive use of GetBlobByte().  Performance is
    fixed by adding local buffering.  Fixes SourceForge bug 3439531
    "Slow TGA reading".

2011-11-19  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/effect.c (AdaptiveThresholdImage): More performance
    improvements.

2011-11-06  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/analyze.c (GetImageBoundingBox): Add a special case to
    handle absolute color comparison.

2011-11-05  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - png: Update libpng to 1.5.6 release.

2011-10-30  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - configure.ac: Avoid linker warnings when building GraphicsMagick
    regarding OpenMP library being included multiple times.

2011-10-29  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - coders/meta.c (GetIPTCStream): Eliminate possible use of
    uninitialized data when parsing long format tag length.

2011-10-23  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/import.c: Move low-level pixel import functions from
    constitute.c to new file import.c.

  - magick/export.c: Move low-level pixel export functions from
    constitute.c to new file export.c.

  - magick/floats.c: Move Richard Nolde's floating point conversion
    functions from constitute.c to new file floats.c.

2011-10-21  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - libtool: Updated to libtool 2.4.2.

  - configure.ac: Automake conditional for HasPNG can not itself be
    conditional.  Indent PNG script code appropriately.

2011-10-16  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - Makefile.am (AUTOMAKE\_OPTIONS): Distribute lzma-compressed
    tarball in 'xz' format rather than deprecated 'lzma' format.

2011-10-13  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - configure.ac: Fix syntax error with GSCMYKDevice ('==' rather
    than '=').  Thanks to Glenn Randers-Pehrson for noticing and
    reporting the issue.

2011-10-12  Glenn Randers-Pehrson  <glennrp@simple...>

  - Use a "for" loop in configure.ac to find libpngNN.

2011-10-08  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - wand/pixel\_wand.c (NewPixelWand): Invoke InitializeMagick()
    automatically in case user forgets to do so.

  - wand/drawing\_wand.c (NewDrawingWand): Invoke InitializeMagick()
    automatically in case user forgets to do so.

  - wand/magick\_wand.c (NewMagickWand): Invoke InitializeMagick()
    automatically in case user forgets to do so.

  - png: libpng sources were updated to release 1.5.4.

2011-10-07  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - coders/tiff.c (ReadTIFFImage): TIFFGetField() on
    TIFFTAG\_OPIIMAGEID was causing a crash due to an argument
    mis-match between GraphicsMagick and libtiff.  Also fixed a few
    GCC 4.6 warnings.  Problem was reported by Dylan Millikin.

2011-10-02  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - wand/magick\_wand.c (MagickSetDepth): New function to set the
    depth used when reading from an image format which requires that
    the depth be specified in advance.
    (MagickReadImageBlob): Use BlobToImage() to read the blob.

  - magick/effect.c (AdaptiveThresholdImage): Reduce or eliminate
    expensive floating point calculations when possible.

  - wand/magick\_wand.c (MagickSetFormat): New Wand function to allow
    setting the file or blob format before it has been read.

2011-09-24  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - VisualMagick/installer/inc/tasks-install-perlmagick.isx: Windows
    setup installer now installs PerlMagick built against ActiveState
    Perl v5.12.4 build 1205.

  - magick/annotate.c (RenderFreetype): Eliminate spurious "out of
    memory" exceptions due to empty text string.

2011-09-18  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/module.c (ModuleAliases): PAM format is handled by PNM
    coder.

  - jpeg: Record that jpeg sources were updated to release v8c.

  - lcms: Record that lcms sources were updated to release 2.2.

  - png: Record that png sources were updated to release 1.5.4.

  - tiff: Record that tiff sources were updated to release 4.0.0beta7.

  - xml: Record that libxml2 sources were updated to release 2.7.8.

  - zlib: Record that zlib sources were updated to release 1.2.5.

  - VisualMagick/installer/inc/body.isx: Set MagickConfigDirectory
    for DLL build so that .mgk files are put in application top
    directory.  This makes installation layout between static and DLL
    builds more similar.

2011-08-23  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/list.c (AppendImageToList): Documentation for
    AppendImageToList() was wrong.  Problem was reported by Brad
    Harder.

2011-08-20  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/display.c (MagickXMagickCommand): Display 'save' and
    'print' should display useful error details.  Problem was reported
    by Brad Harder.

2011-08-19  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/semaphore.c (AllocateSemaphoreInfo): Enable pthread mutex
    error checking if MAGICK\_DEBUG is defined when the code is
    compiled.  This mode helps validate that mutexes are used
    correctly.  No longer enable recursive mutexes since the
    GraphicsMagick logic should be able to operate without this
    assistance.

2011-08-10  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - coders/dcm.c (DCM\_ReadOffsetTable): Fix wrong cast noticed when
    compiling with LLVM.

2011-08-08  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/enhance.c (LevelImageChannel): Fix documented prototype.
    Problem was reported by Brad Harder.

2011-07-31  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/pixel\_cache.c (AcquireOneCacheViewPixelInlined): Only use
    image colormap if the image storage class is PseudoClass.
    Eliminates a core dump when the image is in CMYK space.

2011-07-20  Glenn Randers-Pehrson  <glennrp@simple...>

  - coders/png.c: account for changed typecast of png\_get\_iCCP
    argument in libpng15 

2011-07-20  Glenn Randers-Pehrson  <glennrp@simple...>

  - configure.ac: look for libpng15, libpng14, libpng12, and libpng
    in that order.

2011-07-17  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - png: Update to libpng 1.5.4.

2011-06-15  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - www/docutils-articles.css: Style sheet syntax fixes. Patch by
    Mark Mitchell.

  - scripts/html\_fragments.py: Use proper quoting in banner search
    HTML.  Patch by Mark Mitchell.

2011-06-13  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/image.c (SetImageType): Fix documentation for enumeration
    names. The types need "Type" as part of the name.  Problem was
    reported by Brad Harder.

2011-06-09  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - scripts/html\_fragments.py (banner\_template): HTML banner
    improvements to go along with style-sheet changes.

  - www/docutils-articles.css: Style-sheet improvements by Mark
    Mitchell to work better on small screens.

2011-06-07  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - www/project.rst: Add a page for links to pages about the
    project.  The intention is to use this page to reduce the clutter
    in the banner.

2011-05-31  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - doc/options.imdoc: Document tiff:group-three-options define.
  - coders/tiff.c (WriteTIFFImage): Add support for a
    tiff:group-three-options define to allow power-users to set the
    value of the GROUP3OPTIONS tag.

2011-05-28  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - www/Makefile.am: Include Hg.\*, remove CVS.\*.

  - scripts/html\_fragments.py (nav\_template): CVS tab changed to
    Source, which links to Hg.html.

  - www/Hg.rst: Document Hg repository access.

2011-05-23  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - scripts/rst2htmldeco.py (docutils\_opts): Do not include a
    datestamp of any kind since it unnecessarily churns the
    repository, particularly if the output file did not otherwise
    change.

  - INSTALL-unix.txt: Fix typo in description of --without-lzma.

2011-05-08  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - coders/jpeg.c (ReadJPEGImage): Treat exceptions thrown by
    jpeg\_finish\_decompress() as warnings rather than errors.
    (JPEGErrorHandler): Handle JPEG errors directly rather than
    passing them to a message formatting routine for handling.  Also
    added useful logging.
    (JPEGMessageHandler): Only handle JPEG traces and warnings.  Also
    added useful logging.

2011-05-07  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - coders/jpeg.c (EmitMessage): Treat an unhandled EXP marker as a
    warning rather than a hard error.  Resolves SourceForge issue
    3297995 "Unsupported marker type 0xdf".

2011-05-04  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/image.c (AppendImages): If the input list only contains
    one image, then return a new handle to the one image in the list
    rather than reporting an exception.  Problem was reported by Ravil
    Rakhimgulov ("Hunter1972").

2011-04-28  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/image.c (SetImageColorRegion): New function to set the
    constant pixel color for a specified region of the image.
    (AppendImages): Only color background pixels when needed.

2011-04-24  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - coders/tiff.c (WriteTIFFImage): Added TIFF writer support for
    JBIG1 compression.  Not proven to work yet.

  - magick/image.h (CompressionType): Added Group3Compression as an
    alias for already existing FaxCompression.  Added
    JPEG2000Compression, JBIG1Compression, and JBIG2Compression for
    future use.

2011-04-23  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - configure.ac: For MinGW32 use 64-bit value formatting
    conventions which will work with any version of the WIN32 CRT.

2011-04-21  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - coders/jpeg.c (WriteJPEGImage): Properly handle errors reported
    by the JPEG library when writing.  Up to now, JPEG library simply
    invoked exit(), which crashed or hung if driven by Magick++ API.
    Fixes SourceForge bug 3106947 "Assertion failure when saving an
    "invalid" image as JPEG".

  - magick/module.c (ModuleAliases): Delete "XTRNBSTR"-entry. Fix by
    Stefan Graff.

  - contrib/win32/ATL7/ImageMagickObject/ImageMagickObject.cpp
    (Perform): Member "Perform" - out-commented SafeArrayAccessData
    and following SafeArrayUnaccessData. Fix by Stefan Graff.

  - contrib/win32/ATL/ImageMagickObject/MagickImage.cpp: Delete
    "XTRNSTREAM"-branch because "XTRNSTREAM" doesn't exist
    anymore. Fix by Stefan Graff.

  - coders/xtrn.c: In function "WriteXTRNImage" there is no branch
    for XTRNARRAY. Fix by Stefan Graff.

  - PerlMagick/Magick.xs: AdaptiveThreshold offset argument was
    being parsed into an 'unsigned long' rather than 'double' as it
    should have been.  This resulted in inability to handle negative
    offsets. Fixes SourceForge bug 3288735 "PerlMagick issue with
    AdaptiveThreshold".

  - coders/jpeg.c (ReadIPTCProfile): JPEG may deliver IPTC profile
    in chunks but code was only allowing one chunk, even though it was
    otherwise prepared to concatenate chunks.  Fixes SourceForge bug
    2978422 "Clipping paths in JPG images are truncated".

  - magick/utility.c (GetToken): Fix case where parser may run off
    end of string.  Also add asserts to check for passing null
    pointer.

2011-04-10  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/channel.c (ChannelImage): Report an error if the
    requested channel is not compatible with the image colorspace.
    Only deals with CMYK/RGB conflicts.  Resolves SourceForge issue
    3283046 "Bug in CMYK".

2011-03-15  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - coders/txt.c (ReadTXTImage): Throw error if attempt to read
    empty file.

  - coders/{fits.c,mac.c,miff.c,pcd.c,pict.c,ps3.c,rla.c,txt.c}:
    Format requires seekable stream.

  - coders/pnm.c (WritePNMImage): Implement writer for PAM format.

  - coders/ept.c (WriteEPTImage): Fix error handling for case when
    TIFF writer fails.

  - magick/constitute.c (ReadImage): Use of GetBlobStatus() to
    evaluate image reader success is bogus.
    (MagickGetQuantumSamplesPerPixel): New private method to return
    the number of samples returned per pixel for a given quantum type.

2011-03-14  Glenn Randers-Pehrson  <glennrp@simple...>

  - coders/png.c (WriteOnePNGImage(): Fixed a rounding error in
    writing the pHYs chunk (it was truncating instead of rounding).

2011-02-20  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/magick.c (MagickPanicSignalHandler,MagickSignalHandler):
    Don't invoke DestroyMagick() since there may be OpenMP worker
    threads still running which are using data which would be
    deallocated.  Instead we invoke PurgeTemporaryFiles() to remove
    any existing temporary files. Valgrind will report leaks if the
    program is terminated by a signal but this causes no actual harm.
    Resolves SourceForge issue 3165456 "^C causes semaphore failure in
    MacOSX".
    (MagickPanicSignalHandler): Invoke abort() in panic signal handler
    so that we will reliably get a core dump.

  - magick/tempfile.c (PurgeTemporaryFiles): New private function to
    remove any existing temporary files but without destroying
    temporary file semaphore.

2011-02-13  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - coders/pnm.c (ReadPNMImage): Fix mis-placed break in PAM header
    parser.

  - wand/magick\_wand.c (MagickWriteImageBlob): Improve the
    documentation to mention the related use of MagickSetImageFormat()
    and MagickResetIterator().

2011-02-07  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/xwindow.c (MagickXBestFont): Check for a few more common
    font names, and ensure to always check for "fixed" as a final
    fallback.

2011-02-06  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - config/delegates.mgk.in: Added gs-cmyk entry.  Used if '-type
    ColorSeparation' is specified on the command-line prior to the PDF
    or Postscript file name.  This entry specifies use of the
    Ghostscript PAM driver which is capable of supporting CMYK output.
    This may be useful if it is desired to apply CMYK color profiles
    to the image returned from the PDF.  As fair warning, it seems
    that Ghostscript 8.62 outputs CMYK even if the PDF was in RGB
    space if the PAM driver is used.

  - coders/pnm.c (ReadPNMImage): Add support for reading netpbm's
    PAM format.

2011-02-01  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - tests/rwblob.c, tests/rwfile.c: Fixes to help tests work when
    testing with multiple frames.

  - coders/sgi.c: SGI format is not documented to support multiple
    frames.  Remove the half-baked extension for it.

2011-02-01  Glenn Randers-Pehrson  <glennrp@simple...>

  - coders/bmp.c (ReadBMPImage): Changed file\_size greater than
    expected from a corrupt-image error to a debug log entry.
    File\_size too small is still an error, and made that so also for
    BI\_RGB images which were previously exempted from the test.

2011-01-30  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - tests/rwblob.c, tests/rwfile.c: Validate the data in each image
    frame, validate that each read returns the same number of frames,
    and validate that the correct number of frames was ultimately
    returned.

  - magick/blob.c (SyncBlob): Disable bogus code which attempted to
    replicate the blob I/O object across all images in the list when
    the blob is synced.  Leave a less bogus bit of code in place (but
    commented out) in case such functionality is deemed to actually be
    needed in the future.  The previous code was copying structs on
    top of each other, including a pointer member to a semaphore.

2011-01-23  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - www/Changes.rst: Add a new Changes page to wrap up the yearly
    change logs to lessen download size.

  - scripts/changelog2rst.sh: Simple utility to format ChangeLog
    format into something resembling reStructuredText.

  - www/Makefile.am: Use reStructuredText to format the ChangeLog
    files to HTML so that we can inherit the improved formatting and
    page style.

  - coders/pnm.c (ReadPNMImage): Support for multi-frame PNM was
    botched due to on-going edits to support PAM format.

2011-01-16  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - wand/magick\_wand.c (MagickDescribeImage): Was sending
    descriptive output to stdout rather than returning it in an
    allocated string as intended.

2011-01-09  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

  - magick/draw.c, wand/drawing\_wand.c (MvgPrintf): Update to handle
    C99 vsnprintf() return values.

  - magick/draw.c, wand/drawing\_wand.c (DrawAnnotation): Linux
    glibc does not pass extended text characters if "%.1024s"
    formatting convention is used.  Apparently it assumes that such
    characters may be UTF8 and returns -1 rather than outputting the
    string, even if it is assured to fit.