# /u/sy/beebe/tex/ndvi/xref4.awk, Mon Jul 17 16:15:52 1989
# Edit by Nelson H.F. Beebe <beebe@plot79.utah.edu>
# ========================================================================
# Wrap lines at last blank before column 67 (fold, alas, will not do this).
# Wrapping is flagged by a backslash in the last column, and an initial
# tab on the following line.
#
# Usage:
#	awk -f xref4.awk <infile >outfile
# [17-Jul-89]
# ========================================================================
BEGIN {MAXLEN = 67;}
{
	line = $0;
	maxlen = MAXLEN;
	while (length(line) > maxlen)
	{
		for (k = maxlen; (k > 1) && (substr(line,k,1) != " "); --k)
			;
		printf("%s \\\n\t",substr(line,1,k-1));
		line = substr(line,k+1);
		maxlen = MAXLEN - 8;
	}
	if (length(line) > 0)
		print line;
}