From fe11cf120bd305b246ec1de53a5371771bdcf288 Mon Sep 17 00:00:00 2001
From: Ville Rantanen <ville.rantanen@helsinki.fi>
Date: Fri, 17 Mar 2017 10:36:07 +0200
Subject: [PATCH] fix bug with zero length values

---
 files/fimplate.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/files/fimplate.py b/files/fimplate.py
index 79a3054..736b6e2 100755
--- a/files/fimplate.py
+++ b/files/fimplate.py
@@ -60,10 +60,11 @@ else:
 for l in in_reader:
     for p in pairs:
         value=p[1]
-        if value[0]=="@":
-            value=open(value[1:],'rt').read()
-        elif value[0:2]=="\\@":
-            value=value[1:]
+        if len(value)>0:
+            if value[0]=="@":
+                value=open(value[1:],'rt').read()
+            elif value[0:2]=="\\@":
+                value=value[1:]
         l=l.replace(p[0],value)
     if options.env:
         var_list=[m.group(0) for m in re.finditer('\${[^ ]+}', l)]