see arduino#1161

Author: Federico Fissore

app/src/processing/app/Sketch.java

@@ -612,7 +612,7 @@ public void handleDeleteCode() {
 
       } else {
         // delete the file
-        if (!current.deleteFile()) {
+        if (!current.deleteFile(tempBuildFolder)) {
           Base.showMessage(_("Couldn't do it"),
                            I18n.format(_("Could not delete \"{0}\"."), current.getFileName()));
           return;

app/src/processing/app/SketchCode.java

@@ -107,8 +107,21 @@ protected boolean fileReadOnly() {
   }
 
 
-  protected boolean deleteFile() {
-    return file.delete();
+  protected boolean deleteFile(File tempBuildFolder) {
+    if (!file.delete()) {
+      return false;
+    }
+
+    File[] compiledFiles = tempBuildFolder.listFiles(new FileFilter() {
+      public boolean accept(File pathname) {
+        return pathname.getName().startsWith(getFileName());
+      }
+    });
+    for (File compiledFile : compiledFiles) {
+      compiledFile.delete();
+    }
+
+    return true;
   }