eliminated unnecessary cd and failing substitution
eliminated unnecessary cd and failing substitution

Changing the working directory in a sub-subshell
does not change the working directory of the executing
shell.

The substitution was broken for me on _all_ my machines,
so I started looking into the business.

tnb/oh-my-zsh,tnb/oh-my-zsh,tnb/oh-my-zsh,tnb/oh-my-zsh