lfi-os-files.data contains an amalgamation of different filenames and paths. Dot files in particular are prone to FPs. Unfortunately, it is not trivial to check whether a match from @pmFromFile (see 930120) came from a dot file, since the match can be a substring. For example, .docker would be found in [email protected], but the the match would be the full e-mail address.

I propose we move dot files out of lfi-os-files.data to make our lives easier, and create a new rule to cover dot files specifically.

Below is the comment from @aryehb that initiated this issue.

@theseion .env is not the only FP for this rule.

We just came across an email with the form [email protected], where it was being flagged because it matched .docker.

Originally posted by @aryehb in #3775