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//  Scicos
//
//  Copyright (C) INRIA - METALAU Project <scicos@inria.fr>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// See the file ./license.txt
//

function [c]=readc_(unit)
//Syntaxes : c=readc_(unit)
//           c=readc_()
//
//readc_ reads a character string 
//This macro allows one to interrupt an exec file without pause;
//the exec file stops until carrige return is made.
//!
//
// Copyright INRIA
[lhs,rhs]=argn(0);
if rhs<=0 then unit=%io(1); end;
c=read(unit,1,1,'(a)');
endfunction