diff -u -Naur orig/vim73/src/gui_gtk.c patched/vim73/src/gui_gtk.c
--- orig/vim73/src/gui_gtk.c	2010-07-20 04:15:22.000000000 -0700
+++ patched/vim73/src/gui_gtk.c	2010-11-11 10:40:51.000000000 -0800
@@ -1287,6 +1287,8 @@
 	entry = gtk_entry_new();
 	gtk_widget_show(entry);
 
+        gtk_entry_set_activates_default (entry, TRUE);
+
 	text = CONVERT_TO_UTF8(textfield);
 	gtk_entry_set_text(GTK_ENTRY(entry), (const char *)text);
 	CONVERT_TO_UTF8_FREE(text);