From a6411626bf443abe2d121d43dcaff83b3d948733 Mon Sep 17 00:00:00 2001
From: 7heo <7heo@users.noreply.github.com>
Date: Tue, 31 Mar 2015 01:52:39 +0200
Subject: [PATCH] config: interprets '~' as the current user home dir in file()

---
 config/interpolate_funcs.go | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/config/interpolate_funcs.go b/config/interpolate_funcs.go
index 8bb76c532..6fa9dd1cb 100644
--- a/config/interpolate_funcs.go
+++ b/config/interpolate_funcs.go
@@ -9,6 +9,7 @@ import (
 	"strings"
 
 	"github.com/hashicorp/terraform/config/lang/ast"
+	"github.com/mitchellh/go-homedir"
 )
 
 // Funcs is the mapping of built-in functions for configuration.
@@ -57,7 +58,12 @@ func interpolationFuncFile() ast.Function {
 		ArgTypes:   []ast.Type{ast.TypeString},
 		ReturnType: ast.TypeString,
 		Callback: func(args []interface{}) (interface{}, error) {
-			data, err := ioutil.ReadFile(args[0].(string))
+			var path string
+			path, err := homedir.Expand(args[0].(string))
+			if err != nil {
+				return "", err
+			}
+			data, err := ioutil.ReadFile(path)
 			if err != nil {
 				return "", err
 			}