Custom attributes not expanding in Emacs 26.1 / Release 1.0.8

[nevetS]

I have installed emmet-mode from the git repo using tag 1.0.8

square brackets do not expand when editing html documents.

From the readme:
b[x] should expand to <b x=""></b>

What I get instead is <b></b>. If I try to include anything after the [x], it still only produces <b></b>

For instance:
b>c expands to <b><c></c></b>

but:
b[x]>c only expands to <b></b>

It seems like the square brackets are silently seen as an error and processing stops from there.

GNU Emacs 26.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.22.30)
of 2018-05-21

➜ emmet-mode git:(bf76d71) git status
HEAD detached at 1.0.8
nothing to commit, working tree clean

It looks like this problem is fixed in the current git version, but when using that, the preview functionality no longer works - which I found quite helpful as a new user.

[Timmymayes]

This is working for me atm such that b[x=test]>c expands to <b x="test"><c></c></b>