[Patch, fortran] PR28585: Add Fortran 2003 NEW_LINE intrinsic function

[Brooks Moses]

Steve Kargl wrote:
> On Thu, Sep 28, 2006 at 07:29:18AM +0200, FX Coudert wrote:
>>I'm a bit worried that not all systems supported by gfortran use \n  
>>as newline. E.g., i386-pc-mingw32 uses \n\r.
> 
> Yes, that is a concern.  We can probably ping Richard Maine for
> the requirements of the standard.  Without looking, I would guess
> the standard simple says that new_line() provides a single 
> CHARACTER. On input/output the processor is permitted to translate
> a \n to \r\n, but new_line() itself must return \n.

I had thought about suggesting such a translation on input/output, but 
unfortunately there are probably lots of programs in existence that 
assume that \n is not translated to \r\n, and so that would really be a 
regression.

My conclusion is that the standard NEW_LINE intrinsic is relatively 
useless, as a result of this; it simply is not defined as a function 
that reliably returns the system representation of a new line.

- Brooks