Handle GNOME Terminal quirk

src/file_item.vala

@@ -235,23 +235,26 @@ public class FileItem : DesktopItem {
 			// terminator supports --new-tab and -e,  --working-directory (no -w) WITH equal
 			// xfce4-terminal supports -e, --tab, --window, and --working-directory (no -w) WITH equal
 
-			switch (preferred_terminal) {
-				// Terminals that use --tab
-				case "gnome-terminal":
-				case "mate-terminal":
-				case "xfce4-terminal":
-					args += "--tab";
-					break;
-
-				// Terminals that use --new-tab
-				case "konsole":
-				case "terminator":
-					args += "--new-tab";
-					break;
-
-				// Terminals that don't support tabs
-				default:
-					break;
+			if ((preferred_terminal == "gnome-terminal") && (_type == "file")) {
+				args += "--tab";
+			} else {
+				switch (preferred_terminal) {
+					// Terminals that use --tab
+					case "mate-terminal":
+					case "xfce4-terminal":
+						args += "--tab";
+						break;
+
+					// Terminals that use --new-tab
+					case "konsole":
+					case "terminator":
+						args += "--new-tab";
+						break;
+
+					// Terminals that don't support tabs
+					default:
+						break;
+				}
 			}
 
 			string path =  file.get_path();