diff --git a/bin/git-line-summary b/bin/git-line-summary
index 889b403..95051fe 100755
--- a/bin/git-line-summary
+++ b/bin/git-line-summary
@@ -8,7 +8,9 @@ project=${PWD##*/}
 function single_file {
   while read data
   do
-    git blame --line-porcelain $data | sed -n 's/^author //p'
+	if [[ $(file $data) = *text ]]; then   # 
+      git blame --line-porcelain $data | sed -n 's/^author //p';
+    fi
   done
 }
 
@@ -40,8 +42,10 @@ function result {
   authors | awk '
     { args[NR] = $0; sum += $0 }
     END {
+	  printf " %-9s: %i\n", "lines", sum
+	  printf " %-9s: \n", "authors"
       for (i = 1; i <= NR; ++i) {
-        printf "%-30s %2.1f%%\n", args[i], 100 * args[i] / sum
+        printf " %-30s %2.1f%%\n", args[i], 100 * args[i] / sum
       }
     }
     '
@@ -51,8 +55,6 @@ function result {
 
 echo
 echo " project  : $project"
-echo " lines    :" $(count)
-echo " authors  : "
 result
 echo