parsing failure

[kmcdonell]

For bugs with existing features

• Rule Id: SC1073
• My shellcheck version: 0.9.0
• [yes] I tried on https://www.shellcheck.net/ and verified that this is still a problem on the latest commit

Here's a snippet or screenshot that shows the problem:

#!/bin/sh
for a in -d -f
do
        [ $a foo ] && echo bar
done

Here's what shellcheck currently says:

In eek line 4:
[ $a foo ] && echo bar
^-- SC1073 (error): Couldn't parse this test expression. Fix to allow more checks.
^-- SC1072 (error): Expected test to end here (don't wrap commands in []/[[]]). Fix any mentioned problems and try again.

Here's what I wanted or expected to see:

Nothing, this is valid shell syntax.