function arg = args2arg(args,n,FS)
% args2arg - pulls the nth argument from a FS-separated list.
% FS defaults to `;'.
%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %%%%% Model Transformation Tools %%%%%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Matlab function args2arg.m
% arg = args2arg(args,n,FS)
% Copyright (c) P.J. Gawthrop, 1996.
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% $Id$
% %% $Log$
% %% Revision 1.2 1996/08/30 09:58:55 peter
% %% Uses str2ch to exteact a char from a string.
% %%
% %% Revision 1.1 1996/08/27 12:50:43 peterg
% %% Initial revision
% %%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Field separator
if nargin<3
FS = ';';
end;
arg = '';
if strcmp(args, '')==0
L = length(args);
args_count = 0;
for i=1:n
arg_count = 0;
arg = '';
if args_count == L
break;
end;
while args_count < L
args_count = args_count+1;
arg_count = arg_count+1;
ch = str2ch(args,args_count);
if ch==FS
break;
end;
arg = [arg ch];
end;
end;
end;