diff --git simutrans/trunk/.editorconfig simutrans/trunk/.editorconfig
new file mode 100644
index 000000000..873fdadd3
--- /dev/null
+++ simutrans/trunk/.editorconfig
@@ -0,0 +1,20 @@
+# EditorConfig (see https://EditorConfig.org)
+
+root=true
+
+[*]
+insert_final_newline=true
+indent_style=tabs
+indent_size=4
+
+[*.rc]
+indent_style=spaces
+indent_size=1
+
+[*.{nsi,nsh}]
+indent_style=spaces
+indent_size=2
+
+[Makefile,*.mk]
+indent_style=spaces
+indent_size=2