[Groff] Two spaces after sentences.

[Christian Jensen]

According to CSTR 54
        'An input line ending with ., ?, or !, [...] is taken to
        be the end of a sentence, and an additional space character
        is automatically provided during filling.'
        (Section 4.1)

This (rather old-fashioned) practice of adding extra space after sentences
is sometimes unwanted. The suggested method to prevent it is to add \& to
the end of the input line, but this is impossible when processing text
automatically and undesirable even with manual editing.

Is there a way to disable the extra space character after sentences
completely?

Best regards,
Christian Jensen