fix the evaluation of hard coded list: [filename, ...] projects

addons/project/kateprojectworker.cpp

@@ -292,6 +292,15 @@ QStringList KateProjectWorker::findFiles(const QDir &dir, const QVariantMap &fil
      */
     QStringList userGivenFilesList = filesEntry[QStringLiteral("list")].toStringList();
     if (!userGivenFilesList.empty()) {
+        /**
+         * make the files absolute relative to current dir
+         * all code later requires this and the filesFrom... routines do this, too, internally
+         * even without this, the tree views will show them, but opening them will create new elements!
+         */
+        for (auto &file : userGivenFilesList) {
+            file = dir.absoluteFilePath(file);
+        }
+
         /**
          * users might have specified duplicates, this can't happen for the other ways
          */