On Mon, Dec 16, 2019 at 2:25 PM n952162 <n952...@web.de> wrote:
>
> It's strange ... on coming home, I see that my machine here can display
> all the usual filetypes and has *no* use flags:
>
>     media-gfx/imagemagick-7.0.8.11
>
> I'm still curious what that "USE flags" section in the package document
> represents.
>

Without fetching an out-of-date repo I have no idea what 7.0.8.11
supported as it is no longer in the repo.  However, 7.0.9.8 supports:

equery uses '=media-gfx/imagemagick-7.0.9.8'
[ Legend : U - final flag setting for installation]
[        : I - package is installed with flag     ]
[ Colors : set, unset                             ]
 * Found these USE flags for media-gfx/imagemagick-7.0.9.8:
 U I
 + + X           : Add support for X11
 + + bzip2       : Use the bzlib compression library
 + + corefonts   : Use media-fonts/corefonts which is required by some commands
 + + cxx         : Build support for C++ (bindings, extra libraries,
code generation, ...)
 - - djvu        : Support DjVu, a PDF-like document format esp.
suited for scanned documents
 - - fftw        : Use FFTW library for computing Fourier transforms
 - - fontconfig  : Support for configuring and customizing font access
via media-libs/fontconfig
 - - fpx         : Enable media-libs/libfpx support
 - - graphviz    : Add support for the Graphviz library
 - - hdri        : Enable High Dynamic Range Images formats
 - - heif        : Enable support for ISO/IEC 23008-12:2017 HEIF/HEIC
image format using media-libs/libheif
 - - jbig        : Enable jbig-kit support for tiff, Hylafax, ImageMagick, etc
 + + jpeg        : Add JPEG image support
 + + jpeg2k      : Support for JPEG 2000, a wavelet-based image
compression format
 + + lcms        : Add lcms support (color management engine)
 - - lqr         : Enable experimental liquid rescale support using
media-libs/liblqr
 + + lzma        : Support for LZMA (de)compression algorithm
 - - openexr     : Support for the OpenEXR graphics file format
 + + openmp      : Build support for the OpenMP (support parallel
computing), requires >=sys-devel/gcc-4.2 built with USE="openmp"
 + + pango       : Enable Pango support using x11-libs/pango
 - - perl        : Add optional support/bindings for the Perl language
 + + png         : Add support for libpng (PNG images)
 - - postscript  : Enable support for the PostScript language (often
with ghostscript-gpl or libspectre)
 - - q32         : Set quantum depth value to 32
 - - q8          : Set quantum depth value to 8
 - - raw         : Add support for raw image formats
 - - static-libs : Build static versions of dynamic libraries as well
 + + svg         : Add support for SVG (Scalable Vector Graphics)
 - - test        : Enable dependencies and/or preparations necessary
to run tests (usually controlled by FEATURES=test but can be toggled
independently)
 + + tiff        : Add support for the TIFF image format
 + + truetype    : Add support for FreeType and/or FreeType2 fonts
 - - webp        : Add support for the WebP image format
 - - wmf         : Add support for the Windows Metafile vector image format
 + + xml         : Add support for XML files
 + + zlib        : Add support for zlib (de)compression


I'm pretty skeptical that the older version supported no USE flags.
How are you coming to this conclusion?

-- 
Rich

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