diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..58de178
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,7 @@
+# Line endings are LF everywhere (rule 15 of the coding-conventions skill).
+root = true
+
+[*]
+end_of_line = lf
+charset = utf-8
+insert_final_newline = true
diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..6313b56
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+* text=auto eol=lf