"Undefined name filter"

[Pytheas01]

If possible, please include complete self contained source files (for example by uploading to https://gist.github.com) that exhibit the issue in addition to quoting from them here. The smaller the example the better!

Steps to Reproduce

filter (\ARG => ARG < 3) [0, 1, 2, 3, 4]

Expected Behavior

[0, 1, 2] : List Integer

Observed Behavior

(interactive):1:1--1:41:Undefined name filter

[edwinb]

That's right, filter isn't in the prelude, it's in Data.List.