Function clauses should be detected as occurrences

[develop7]

Repro:

1. Clone https://github.com/serokell/github-ops-access, prepare it with stack build, import project
2. Position caret to _oaInstallation on https://github.com/serokell/github-ops-access/blob/test/webhook/Main.hs#L57

Expected: other _oaInstallation entries in L56 and L42 are highlighted as occurrences

Instead: they are not

[rikvdkleij]

That is a shortcoming/bug of intero.

https://github.com/commercialhaskell/intero/issues/369

[rikvdkleij]

Could be "manual" fixed when parser is improved. cc @ice1000