Update runtime files.
diff --git a/runtime/compiler/sml.vim b/runtime/compiler/sml.vim
new file mode 100644
index 0000000..c7e1b1b
--- /dev/null
+++ b/runtime/compiler/sml.vim
@@ -0,0 +1,28 @@
+" Vim compiler file
+" Compiler: SML/NJ Compiler
+" Maintainer: Doug Kearns <dougkearns@gmail.com>
+" Last Change: 2020 Feb 10
+
+if exists("current_compiler")
+ finish
+endif
+let current_compiler = "sml"
+
+if exists(":CompilerSet") != 2 " older Vim always used :setlocal
+ command -nargs=* CompilerSet setlocal <args>
+endif
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+CompilerSet makeprg=sml
+CompilerSet errorformat=%f:%l.%c-%\\d%\\+.%\\d%\\+\ %trror:\ %m,
+ \%f:%l.%c\ %trror:\ %m,
+ \%trror:\ %m
+ \%f:%l.%c-%\\d%\\+.%\\d%\\+\ %tarning:\ %m,
+ \%f:%l.%c\ %tarning:\ %m,
+ \%tarning:\ %m,
+ \%-G%.%#
+
+let &cpo = s:cpo_save
+unlet s:cpo_save