So I have finally find some time to make it work for Elixir 1.10 and publish it on Hex.

Now it is implemented via compiler tracing, so it is only Elixir 1.10 and later, but thanks to that, it also works with ElixirLS.

Beware that it is still WIP, and there are some features missing, and it will print a lot (and by a lot I mean A LOT) of false positives as it do not filter out generated functions nor Elixir macros. So prepare for filtering out quite a lot.

Testers, suggestions, and pull requests are welcome.

What is not currently working:

• Macros filtering
• Generated functions filtering (so for example you need to filter out {:_, :__schema__, :_} if you use Ecto, all controller actions if you use Phoenix, etc.)
• Lines for given functions, so all missing functions will be reported on top of the file
• No way to filter out functions using regular expression
• No way to filter out functions using range arity

v0.4.1 released

The main reason for that is that older version was reporting false positives (used function reported as unused) if there was a call cycle.

Bug Fixes

• resolve issue with unused analyzer reporting false positives (3b86630)

Documentation

• Improve Usage Docs a bit around usage (a191c46)

Release v0.2.0

Added few useful features:

• macros are supported now
• you can filter out functions and modules using regular expressions
• you can filter arity using ranges
• lines are properly supported, which mean that ElixirLS will report unused functions as a lens in correct places