I have a simple prompt:

function fish_prompt
	set_color yellow
	echo (pwd) | sed -e "s|^$HOME|~|" -e "s|^/sandbox/rramacha|\$s|"
	set_color normal
	echo '$ '
end

When I alt-left from ~/src/llvm/tools/polly/test/ScopDetect to ~/src/jsoncpp, my prompt is mangled:

~/src/jsoncppols/polly/test/ScopDetect
$

Not sure how to work around this except by padding the path with trailing spaces?