Merge pull request #56847 from jmb462/unkown_extension_warning

Prevent renaming to an unkown extension from FileSystem dock.

1 files changed, 6 insertions, 0 deletions

diff --git a/editor/filesystem_dock.cpp b/editor/filesystem_dock.cpp
index 0253307d5a..d71861e72d 100644
--- a/editor/filesystem_dock.cpp
+++ b/editor/filesystem_dock.cpp
@@ -1472,12 +1472,18 @@ void FileSystemDock::_folder_removed(String p_folder) {
 
 void FileSystemDock::_rename_operation_confirm() {
 	String new_name = rename_dialog_text->get_text().strip_edges();
+	String old_name = tree->get_selected()->get_text(0);
 	if (new_name.length() == 0) {
 		EditorNode::get_singleton()->show_warning(TTR("No name provided."));
 		return;
 	} else if (new_name.find("/") != -1 || new_name.find("\\") != -1 || new_name.find(":") != -1) {
 		EditorNode::get_singleton()->show_warning(TTR("Name contains invalid characters."));
 		return;
+	} else if (to_rename.is_file && old_name.get_extension() != new_name.get_extension()) {
+		if (!EditorFileSystem::get_singleton()->get_valid_extensions().find(new_name.get_extension())) {
+			EditorNode::get_singleton()->show_warning(TTR("This file extension is not recognized by the editor.\nIf you want to rename it anyway, use your operating system's file manager.\nAfter renaming to an unknown extension, the file won't be shown in the editor anymore."));
+			return;
+		}
 	}
 
 	String old_path = to_rename.path.ends_with("/") ? to_rename.path.substr(0, to_rename.path.length() - 1) : to_rename.path;