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Date:      Tue, 21 May 2019 21:01:40 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 225096] [libteken] [PATCH] Add reverse wrap around to libteken
Message-ID:  <bug-225096-227-oGmoj5CZbP@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-225096-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-225096-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D225096

--- Comment #3 from Ed Schouten <ed@FreeBSD.org> ---
Hey! The patch looks decent, but I'm wondering whether it's possible to mer=
ge
some of the now redundant logic in teken_subr_backspace(), e.g.:

...
} else {
    if (t->t_cursor.tp_col =3D=3D 0) {
        if ((t->t_stateflags & TS_REVWRAP) =3D=3D 0)
            return;
        t->t_cursor.tp_row--;
        t->t_cursor.tp_col =3D t->t_winsize.tp_col - 2;
    } else {
        t->t_cursor.tp_col--;
        t->t_stateflags &=3D ~TS_WRAPPED;

    }
}

Also, I think you might need to take TS_WRAPPED into account. Depending on =
the
value of that flag, you may need to jump to 't->t_winsize.tp_col - 1' or
't->t_winsize.tp_col - 2'.

Also, feel free to remove the teken_printf() calls there. They were just a
debugging aid to display unsupported escape sequences.

--=20
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