Terminal environments are always awful at RTL, they always need to make shitty compromises that graphical environments just don't need to make. The fact that you even need a RTL mark is already a bad start - graphical text renderers can deduce text directionality based on the characters in it.
Try using a website in an RTL language some time. Facebook and Google both support Arabic and Hebrew for example. The entire site is flipped - a left sidebar would instead appear on the right, a logo might be at the top right instead of top left, etc. Getting it right is hard, especially with mixed RTL/LTR content (like if you have a Hebrew page with some English words on it).