facebook/arcanist — pull request #17 by dcramer (2012-01-18 01:15:01+00:00)
Title: Add canRun to linters.

Summary:
This allows engines to check the canRun method on linters,
which should determine if a linter is configured and can
be run in the current environment.

Test Plan:
Implement a linter with canRun as false, and ensure
it doesnt run.

Ensure all existing linters still run by default.

Reviewers: epriestley

CC: aran

Differential Revision: https://secure.phabricator.com/D1445