[Bug fortran/55991] Support or document "Escape Sequences"

[damage3025 at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55991

--- Comment #3 from damage3025 at gmail dot com 2013-01-15 14:26:29 UTC ---
As I tried with GNU Fortran 4.7.2 and I was trying to output CRLF explicitly.
$ gfortran --version
GNU Fortran (Ubuntu/Linaro 4.7.2-2ubuntu1) 4.7.2
Copyright (C) 2012 Free Software Foundation, Inc.

c this works
      write (u, '(A, $)') char(13)//char(10)
c these don't work
      write (u, '(A, $)') '\r\n'
      write (u, '(A, $)') "\r\n"

And I honestly find no mention of whether this feature is implemented or not in
documentation of GNU Fortran.
http://gcc.gnu.org/onlinedocs/gfortran/

As I said, Sun's f77 documentation say it is an extension, but I have no idea
whether this is already part of newer Fortran standard. (If so you don't have
to mention it in your documentation)