Bug#851907: graphicsmagick: gm convert: unrecognized operator (-operator).

[Bob Friesenhahn]

On Thu, 19 Jan 2017, Daniel Kahn Gillmor wrote:

Package: graphicsmagick
Version: 1.3.25-7
Severity: normal
gm(1) says:

      -operator channel operator rvalue[%]
             apply a mathematical, bitwise, or value  operator  to  an  image
             channel

But:

0 dkg@alice:~$ gm convert /usr/share/pixmaps/debian-logo.png -operator all 
invert '100%' foo.png
gm convert: Unrecognized operator (-operator).
1 dkg@alice:~$

Somehow this functionality is missing from the compiled build!

The 'invert' keyword sounds useful but the GraphicsMagick 
documentation specifies to use 'Negate' for this purpose.

This is not a bug.

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