From 2fe2220a4c8446f5212094752657a11f6c7da201 Mon Sep 17 00:00:00 2001
From: Alexander Schmidt <alex@treefish.org>
Date: Fri, 6 Feb 2015 16:06:02 +0100
Subject: [PATCH] only save if changed.

---
 usetaglib.cpp | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/usetaglib.cpp b/usetaglib.cpp
index 7909009..43ae55c 100644
--- a/usetaglib.cpp
+++ b/usetaglib.cpp
@@ -221,6 +221,8 @@ int main(int argc, char *argv[])
 
     if(f.isNull())
       continue;
+
+    bool FCHANGED = false;
     
     for (actionqueue::iterator actit = requestedActions.begin(); actit != requestedActions.end(); ++actit) {
       switch (actit->first) {
@@ -234,19 +236,23 @@ int main(int argc, char *argv[])
 	
       case ERASE:
 	action_eraseTag(f, actit->second);
+	FCHANGED = true;
 	break;
 	
       case REPLACE:
 	action_replaceTag(f, splitToTagPair(actit->second));
+	FCHANGED = true;
 	break;
 
       case INSERT:
 	action_insertTag(f, splitToTagPair(actit->second));
+	FCHANGED = true;
 	break;
       }
     }
-    
-    f.file()->save();
+
+    if (FCHANGED)
+      f.file()->save();
   }
   
   return 0;
-- 
2.39.5