Here's is syntax highlighting for the language Standard
ML (this follows the syntax of SML'97).
At least this one extension should be included:
SML langauge file
*.sml
-autoindent
-syntax sml
-smarthome
-smartbacks
-istep 2
However, *.sig and *.fun are also common SML file
extensions.
There are some bugs with detecting the end of a SML
type definition, but this is not possible to do
properly with a finite state machine like joe. It comes
close enough on all the source files I checked, however.
Syntax highlighting