rust-lang/cargo — pull request #1100 by kballard (2014-12-29 21:07:17+00:00)
Title: Use "$PWD" instead of `pwd` in install instructions

There's no need to promote the use of the `pwd` command when shells export the
current directory as `$PWD`. Using `$PWD` makes the commandline work in fish
as well. Additionally, quote the variable so it works properly even if the cwd
has a space in it.