+ // LinkBack files look like PDF, but have the .linkback extension
+ string const ext = getExtension(filename.absFilename());
+ if (format_name == "pdf" && ext == "linkback") {
+#ifdef USE_MACOSX_PACKAGING
+ return editLinkBackFile(filename.absFilename().c_str());
+#else
+ Alert::error(_("Cannot edit file"),
+ _("LinkBack files can only be edited on Apple Mac OSX."));
+ return false;
+#endif // USE_MACOSX_PACKAGING
+ }
+