Add warnings when users try to use --jobs and cannot
If a user tries to use a feature that uses stdin
(e.g., --diff
or explicitly with -
) with --jobs
they should see a warning. Likewise, if a user is on Windows and tries to use --jobs
they should see a warning.
This probably is a terrible idea to turn on by default, so we might add a "verbose" flag so users can gather information about this.