Merge pull request #1366 from fatih/fix-multiple-src

path: fix autp detecting of GOPATH for import paths with string 'src'

autoload/go/path.vim

@@ -83,8 +83,16 @@ function! go#path#Detect() abort
   " fetched from a customizable list. The user should define any new package
   " management tool by it's own.
 
-  " src folder outside $GOPATH
-  let src_root = finddir("src", current_dir .";")
+  " src folders outside $GOPATH
+  let src_roots = finddir("src", current_dir .";", -1)
+
+  " for cases like GOPATH/src/foo/src/bar, pick up GOPATH/src instead of
+  " GOPATH/src/foo/src
+  let src_root = ""
+  if len(src_roots) > 0 
+    let src_root = src_roots[-1]
+  endif
+
   if !empty(src_root)
     let src_path = fnamemodify(src_root, ':p:h:h') . go#util#PathSep()