/* $Copyright:	$
 * Copyright (c) 1984, 1985, 1986, 1987, 1988, 1989, 1990 
 * Sequent Computer Systems, Inc.   All rights reserved.
 *  
 * This software is furnished under a license and may be used
 * only in accordance with the terms of that license and with the
 * inclusion of the above copyright notice.   This software may not
 * be provided or otherwise made available to, or used by, any
 * other person.  No title to or ownership of the software is
 * hereby transferred.
 */

#ifndef lint
static char rcsid[] = "$Header: tc.c 2.0 86/01/28 $";
#endif

 /* tc.c: find character not in table to delimit fields */
# include "t..c"
choochar()
{
/* choose funny characters to delimit fields */
int had[128], ilin,icol, k;
char *s;
for(icol=0; icol<128; icol++)
	had[icol]=0;
F1 = F2 = 0;
for(ilin=0;ilin<nlin;ilin++)
	{
	if (instead[ilin]) continue;
	if (fullbot[ilin]) continue;
	for(icol=0; icol<ncol; icol++)
		{
		k = ctype(ilin, icol);
		if (k==0 || k == '-' || k == '=')
			continue;
		s = table[ilin][icol].col;
		if (point(s))
		while (*s)
			had[*s++]=1;
		s=table[ilin][icol].rcol;
		if (point(s))
		while (*s)
			had[*s++]=1;
		}
	}
/* choose first funny character */
for(
	s="\002\003\005\006\007!%&#/?,:;<=>@`^~_{}+-*ABCDEFGHIJKMNOPQRSTUVWXYZabcdefgjkoqrstwxyz";
		*s; s++)
	{
	if (had[*s]==0)
		{
		F1= *s;
		had[F1]=1;
		break;
		}
	}
/* choose second funny character */
for(
	s="\002\003\005\006\007:_~^`@;,<=>#%&!/?{}+-*ABCDEFGHIJKMNOPQRSTUVWXZabcdefgjkoqrstuwxyz";
		*s; s++)
	{
	if (had[*s]==0)
		{
		F2= *s;
		break;
		}
	}
if (F1==0 || F2==0)
	error("couldn't find characters to use for delimiters");
return;
}
point(s)
{
return(s>= 128 || s<0);
}
