1 files changed, 30 insertions, 0 deletions
diff --git a/src/Edition/Update.elm b/src/Edition/Update.elm
new file mode 100644
index 0000000..e219629
--- /dev/null
+++ b/src/Edition/Update.elm
@@ -0,0 +1,30 @@
+module Edition.Update exposing
+  ( updateEdition
+  )
+
+import Char
+import Char exposing (KeyCode)
+import List
+
+import Edition.Model exposing (..)
+import Edition.Msg exposing (..)
+
+updateEdition : Msg -> Edition -> Edition
+updateEdition msg edition =
+  case msg of
+
+    DeleteLast ->
+      case List.tail edition.chars of
+        Just tailChars ->
+          { edition | chars = tailChars }
+        Nothing ->
+          edition
+
+    AddChar keyCode ->
+      case keyCodeToChar edition.kind keyCode of
+        Just char ->
+          if keyCode == 32 && List.head edition.chars == Just (Char.fromCode 32)
+            then edition
+            else { edition | chars = char :: edition.chars }
+        Nothing ->
+          edition