brew install --with-fontconfig says formulate has no --with-fontconfig option

[jzadra]

brew install imagemagick --with-fontconfig --with-librsvg --with-ghostscript
==> Installing dependencies for imagemagick: libomp
==> Installing imagemagick dependency: libomp
==> Downloading https://homebrew.bintray.com/bottles/li ... ave.bottle.
######################################################################## 100.0%
==> Pouring libomp-7.0.0.mojave.bottle.tar.gz
/usr/local/Cellar/libomp/7.0.0: 12 files, 1.2MB
Warning: imagemagick: this formula has no --with-fontconfig option so it will be ignored!
Warning: imagemagick: this formula has no --with-ghostscript option so it will be ignored!
Warning: imagemagick: this formula has no --with-librsvg option so it will be ignored!

System:
OSX 10.14.2

[fmw42]

I think you need to check with the Homebrew people for the proper install syntax. Are you installing Imagemagick 6 or 7.