diff --git "a/runtime/spell/yi/\041yi.diff" "b/runtime/spell/yi/\041yi.diff"
new file mode 100644
index 0000000..00ec104
--- /dev/null
+++ "b/runtime/spell/yi/\041yi.diff"
@@ -0,0 +1,7 @@
+*** wordlist.utf8.txt	Thu Aug 11 17:55:15 2005
+--- yi.dic	Thu Aug 11 17:56:28 2005
+***************
+*** 1 ****
+--- 1,2 ----
++ 99999
+  גרונטעלעמענט
diff --git a/runtime/spell/yi/README.txt b/runtime/spell/yi/README.txt
new file mode 100644
index 0000000..db43293
--- /dev/null
+++ b/runtime/spell/yi/README.txt
@@ -0,0 +1,6 @@
+README file for the Yiddish spell file.
+
+The word list was provided by Raphael Finkel.  It is the same one that is used
+by uspell.
+
+Copyright Raphael Finkel.  Included with permission in Vim.
diff --git a/runtime/spell/yi/yi.diff b/runtime/spell/yi/yi.diff
new file mode 100644
index 0000000..020f2dc
--- /dev/null
+++ b/runtime/spell/yi/yi.diff
@@ -0,0 +1,18 @@
+*** wordlist.utf8.txt	Thu Aug 11 18:40:11 2005
+--- yi.dic	Thu Aug 11 19:48:53 2005
+***************
+*** 1,2 ****
+--- 1,3 ----
++ 999999
+  גרונטעלעמענט
+  דזשאָבענדיקס
+*** /dev/null	Thu Aug 11 19:48:23 2005
+--- yi.aff	Thu Aug 11 18:50:45 2005
+***************
+*** 0 ****
+--- 1,5 ----
++ SET UTF-8
++ 
++ REP 2
++ REP וו װ
++ REP יי ײ