Post any defects you find in the released or beta versions of the ImageMagick software here. Include the ImageMagick version, OS, and any command-line required to reproduce the problem. Got a patch for a bug? Post it here.
In IM 6.9.6.5 Q16, both -respect-parenthesis and -respect-parentheses work fine. But in IM 7.0.3.7, the latter, -respect-parentheses, is not recognized.