Section header is printed even without --sections if list is first thing in section

If you have an article that looks like this:

===Section header===

*List item 1
*List item 2

And you pass the --lists argument, the section header will be included in the output even if you do not include the --sections argument. The reason is that the code in compact() that outputs the headers before a list does not check whether keepSections is true. Here is the relevant code:

            if line:  # FIXME: n is '"'
                if options.keepLists:
                    # emit open sections
                    items = sorted(headers.items())
                    for _, v in items:
                        page.append(v)
                    headers.clear()

I think it should be like this:

            if line:  # FIXME: n is '"'
                if options.keepLists:
                    if options.keepSections:
                        # emit open sections
                        items = sorted(headers.items())
                        for _, v in items:
                            page.append(v)
                    headers.clear()

Start by locating compact() and inspect the keepLists handling described in the issue. Reproduce the example with --lists but without --sections, then verify that the section header is omitted while list items remain in the output. Check the existing command-line tests or add coverage for this option combination if no test covers it.