HAU languagesystem not added when .loclHAU glyph exists

I was playing with creating a Hausa variant of the Eng glyph. So, I created a glyph named: Eng.loclHAU

When automatically generating features, the locl feature had the correct subs, but there was no languagesystems prefix created.

For now, I’ve manually added the following to the prefix.
languagesystem latn HAU;

This was in Glyphs 1.3.17. fyi.

As I looked into the Hausa alphabet a little more, I’ve not been seeing the Eng listed for the Latin alphabet used. Originally, I was working from Microsoft’s Character Design Guidelines: http://www.microsoft.com/typography/developers/fdsspec/uppercase.htm

Fixed it.