Temporary .qgs files are deleted

python/core/qgsarchive.sip

@@ -136,6 +136,13 @@ class QgsProjectArchive : QgsArchive
  Returns the current .qgs project file or an empty string if there's none
  :rtype: str
 %End
+
+    bool clearProjectFile();
+%Docstring
+ Remove the current .qgs project file from the temporary directory.
+ :return: true if the file is well removed, false otherwise
+ :rtype: bool
+%End
 };
 
 /************************************************************************

src/core/qgsarchive.cpp

@@ -152,3 +152,17 @@ bool QgsProjectArchive::unzip( const QString &filename )
   else
     return false;
 }
+
+bool QgsProjectArchive::clearProjectFile()
+{
+  bool rc = false;
+  QString file = projectFile();
+
+  if ( !file.isEmpty() && QFile::exists( file ) )
+    rc = QFile::remove( file );
+
+  if ( rc )
+    mFiles.removeOne( file );
+
+  return rc;
+}

src/core/qgsarchive.h

@@ -147,6 +147,12 @@ class  CORE_EXPORT QgsProjectArchive : public QgsArchive
      * Returns the current .qgs project file or an empty string if there's none
      */
     QString projectFile() const;
+
+    /**
+     * Remove the current .qgs project file from the temporary directory.
+     * \returns true if the file is well removed, false otherwise
+     */
+    bool clearProjectFile();
 };
 
 #endif

src/core/qgsproject.cpp

@@ -2110,17 +2110,18 @@ bool QgsProject::unzip( const QString &filename )
     return false;
   }
 
-  // keep the archive
+  // keep the archive and remove the temporary .qgs file
   mUnzipping = false;
   mPathResolverBaseName = QString();
   mArchive.reset( archive.release() );
+  mArchive->clearProjectFile();
 
   return true;
 }
 
 bool QgsProject::zip()
 {
-  if ( unzipped() )
+  if ( !mArchive->filename().isEmpty() )
     return zip( mArchive->filename() );
 
   return false;
@@ -2168,9 +2169,6 @@ bool QgsProject::zip( const QString &filename )
     return false;
   }
 
-  // keep the archive
-  mArchive.reset( archive.release() );
-
   return true;
 }