Hi, I recently started using lintr and it's pretty great. Thank you to everyone involved!

I bumped into an issue related with the exclusions extracted from .lintr files. It seems that the lint report depends on the current working directory of the R console.

Running the following script while the working directory was in the root of the project (lintr/)

> lint_package(".")

does not show inst/example/bad.R in the report (since it's path is in .lintr). Then, if I run

> setwd("..")
> lint_package("lintr")

the file inst/example/bad.R shows in the report.

There is a similar issue with lint(). I added a file lintr/inst/example/.lintr with the content

exclusions: list("bad.R")

Then, I ran the commands

> setwd("lintr/inst/example")
> lint("bad.R")

and bad.R did not show up in the report (as expected). However, that was not the case when I ran

> setwd("..")
> lint("example/bad.R")

Furthermore, when run directly from the console, it seems that lint_dir() always ignores the exclusions in .lintr.

Can you clarify if any of these contrasting behaviors are expected, or what the expected behaviors should be?

Thank you
João