Exit code on lint failures

[danschultz]

Should the linter return a non-zero exit code if a source file fails a lint? The linter is always returning 0, which makes it difficult for a script to know if linting fails without having to parse the result.

[pq]

👍

Ideally the linter CLI should be consistent with the analyzer_cli which bases it's exit code on the ordinal value of the severity of the analysis error. In the case of lints, which are treated as INFOs, that would be 1. NONE is, as you'd expect, 0.

I'll take a look at this. Thanks for the report!