Need to put proxy into .curlrc during bootstrap so curl can get install.sh from chef and get started - but when it writes it into the .curlrc file, it contains 'unsupported trailing garbage' so it doesn't work

gistfile1.txt

** I have the bootstrap_proxy set in knife.rb
$ cat .chef/knife.rb | tail -n1
knife[:bootstrap_proxy] = "http://111.111.111.9:8080"


** in bootstrap/chef-full.erb I tell it to write it to ~/.curlrc
(
cat <<'EOP'
<%= "http_proxy=\"#{knife_config[:bootstrap_proxy]}\"" %>
EOP
) > ~/.curlrc


** but bootstrap fails, curl has 'unsupported trailing garbage'
$ knife bootstrap 111.111.111.157 --ssh-user root --ssh-password 'this-is-a-password-orly' --template-file bootstrap/chef-full.erb --run-list=recipe[base]
Bootstrapping Chef on 111.111.111.157
10.111.111.157 Warning: /root/.curlrc:1: warning: 'http_proxy' had unsupported trailing garbage
10.111.111.157 Warning: garbage
10.111.111.157 curl: option --proxy=on: is unknown
10.111.111.157 curl: try 'curl --help' or 'curl --manual' for more information
10.111.111.157 bash: line 89: chef-client: command not found


** but the script worked, it did write the file and it looks right
# cat .curlrc
http_proxy="http://111.111.111.9:8080"


** what's wrong?