title: Why GOPATH turned to "OPATH in go env
body: <pre><code>localhost:~ jjw$ cat .bash_profile
  export GOPATH="/Users/jjw/gocode"
  localhost:~ jjw$
  localhost:~ jjw$ source .bash_profile
  localhost:~ jjw$ go env
  GOARCH="amd64"
  GOBIN=""
  GOCHAR="6"
  GOEXE=""
  GOHOSTARCH="amd64"
  GOHOSTOS="darwin"
  GOOS="darwin"
  "OPATH="/Users/jjw/gocode 
  GORACE=""
  GOROOT="/usr/local/go"
  GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64"
  CC="clang"
  GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-    arguments -fmessage-length=0 -fno-common"
  CXX="clang++"
  CGO_ENABLED="1"
  </code></pre>
  
  <p>I am confused as to why GOPATH turned to "OPATH.</p>