From 4bd1bbca4a8d2970a788eaaffae648cc03a2b9eb Mon Sep 17 00:00:00 2001
From: Deleplace <deleplace2015@gmail.com>
Date: Sun, 30 Jul 2017 19:41:18 +0200
Subject: [PATCH] Handle default gopath $HOME/go when env var $GOPATH is not
 set.

---
 gocomplete/pkgs.go | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/gocomplete/pkgs.go b/gocomplete/pkgs.go
index 8110ff9..2f95046 100644
--- a/gocomplete/pkgs.go
+++ b/gocomplete/pkgs.go
@@ -4,6 +4,7 @@ import (
 	"go/build"
 	"io/ioutil"
 	"os"
+	"os/user"
 	"path/filepath"
 	"strings"
 
@@ -71,7 +72,7 @@ func listPackages(dir string) (directories []string) {
 
 func systemDirs(dir string) (directories []string) {
 	// get all paths from GOPATH environment variable and use their src directory
-	paths := strings.Split(os.Getenv("GOPATH"), ":")
+	paths := findGopath()
 	for i := range paths {
 		paths[i] = filepath.Join(paths[i], "src")
 	}
@@ -106,3 +107,20 @@ func systemDirs(dir string) (directories []string) {
 	}
 	return
 }
+
+func findGopath() []string {
+	gopath := os.Getenv("GOPATH")
+	if gopath == "" {
+		// By convention
+		// See rationale at https://github.com/golang/go/issues/17262
+		usr, err := user.Current()
+		if err != nil {
+			return nil
+		}
+		usrgo := filepath.Join(usr.HomeDir, "go")
+		return []string{usrgo}
+	}
+	listsep := string([]byte{os.PathListSeparator})
+	entries := strings.Split(gopath, listsep)
+	return entries
+}