#define DEBUG_PANE_BOUNDS 0

}
static void _debug_pane_bounds()
{
#if DEBUG_PANE_BOUNDS
    // Doesn't work for HUD because print_stats() overwrites it.
    // To debug HUD, add viewwindow(false,false) at end of _prep_input.
    cgotoxy(1,1, GOTO_MLIST);
    cprintf("+   L");
    cgotoxy(crawl_view.mlistsz.x-4, crawl_view.mlistsz.y, GOTO_MLIST);
    cprintf("L   +");
    cgotoxy(1,1, GOTO_STAT);
    cprintf("+  H");
    cgotoxy(crawl_view.hudsz.x-3, crawl_view.hudsz.y, GOTO_STAT);
    cprintf("H  +");
    cgotoxy(1,1, GOTO_MSG);
    cprintf("+ M");
    cgotoxy(crawl_view.msgsz.x-2, crawl_view.msgsz.y, GOTO_MSG);
    cprintf("M +");
    cgotoxy(crawl_view.viewp.x, crawl_view.viewp.y);
    cprintf("+V");
    cgotoxy(crawl_view.viewp.x+crawl_view.viewsz.x-2,
            crawl_view.viewp.y+crawl_view.viewsz.y-1);
    cprintf("V+");
#endif

    _debug_pane_bounds();

    // Points and sizes can be combined in these ways:
    // p+p=meaningless, p+sz=p, p-p=sz, p-sz=p
    // sz+p=p, sz+sz=sz, sz-p=meaningless, sz-sz=sz
    const coord_def termp(1,1);

        mlistp = coord_def(1, 1);
        mlistsz = coord_def(mlist_max_width, viewsz.y);
        mlistsz.x = std::min(mlist_min_width + freewidth, mlistsz.x);

        mlistp = termp;
        const int _mlist_max_width = mlist_max_width; // work around link problem?
        mlistsz.x = std::min(mlist_min_width + freewidth, _mlist_max_width);
        mlistsz.y = viewsz.y;

    }

        // The message pane takes all lines not used by the viewport and
        // the mlist.
        int msgstart = mlistp.y + mlistsz.y;
        msgp  = coord_def(1, msgstart);
        msgsz = coord_def(termsz.x, termsz.y - msgstart - 1);
    }
    else

    // Calculate message area

        msgp  = coord_def(1, viewsz.y + 1);
        msgsz = coord_def(termsz.x, termsz.y - viewsz.y);

        // Always from lhs of term to rhs of term
        msgp.x  = termp.x;
        msgsz.x = termsz.x;
        // From bottom of mlist or view, whichever is lower, to bottom of term
        msgp.y  = std::max((mlistp+mlistsz).y, (viewp+viewsz).y);
        msgsz.y = termsz.y - (msgp-termp).y;
        // Well, actually not to the very bottom.  Drawing the last line causes
        // the screen to scroll.  If this is fixed, we get another line of message.
        msgsz.y -= 1;

#ifndef USE_TILE
    // Check that all the panes fit in the view.  Note that currently
    // no pane is allowed to stretch all the way to the bottom (see
    // comment by message pane calculation, above.
    ASSERT( (viewp+viewsz-termp).x <= termsz.x );
    ASSERT( (viewp+viewsz-termp).y <= termsz.y-1 );
    ASSERT( (hudp+hudsz-termp).x <= termsz.x );
    ASSERT( (hudp+hudsz-termp).y <= termsz.y-1 );
    ASSERT( (msgp+msgsz-termp).x <= termsz.x );
    ASSERT( (msgp+msgsz-termp).y <= termsz.y-1 );
    ASSERT( (mlistp+mlistsz-termp).x <= termsz.x );
    ASSERT( (mlistp+mlistsz-termp).y <= termsz.y-1 );
#endif