Re: [Groff] [Heirloom] bug in '.if' string comparison tests

[Ralph Corderoy]

Hi Pierre-Jean,

> I've recently seen the usage of the ^G character as field separator.
> That is a good idea, since it should avoid most possible conflicts
> with user input.  But does anyone know what does this character means,
> and why does it seems to be prefered to other control characters ?

See ascii(7), as others have said, and 10.1 in http://troff.org/54.pdf
around where it says

    In addition, STX, ETX, ENQ, ACK, and BEL are accepted, and may be
    used as delimiters...

Cheers, Ralph.