Revert "Fix #949"

This reverts commit f65689f9d78b56cf6f86b0c6a4de27cfb8e844a3.
Revert "Add tests to check that a comment is parsed as it when it begins by a semicolon"

This reverts commit 0b221d187968b7ed07f9b4446ed208480c1eb64a.
Revert "Fix: allow the "__ANTI-VIRG__" substring in the configuration files"

This reverts commit 0ca3ebd18af9ac24dbf0baf6eb45402ebf29b171.