Questions and postings pertaining to the usage of ImageMagick regardless of the interface. This includes the command-line utilities, as well as the C and C++ APIs. Usage questions are like "How do I use ImageMagick to create drop shadows?".
The -region option works as expected for the 'convert' command-line utility. The 'magick' command-line utility supports scripts and is a bit more pedantic than 'convert' when parsing command-line options. We have not decided whether we can support the -region option for the 'magick' utility. We'll try to decide whether to support or deprecate -region for the 'magick' command-line in the next month or so.
Could this not be supported by drawing a mask from the box coordinates (internally to IM) and processing it with -mask. Actually for IM 7 it would be either -read-mask or -write mask.
NOTE: The IM 7 options page does not list either -read-mask or -write-mask, only -mask. Would someone please clarify if -mask is supported in IM 7 and properly add the other two options as appropriate to the current IM 7 status of these options.