fcntl does not return file information for fid

[Michael D. Godfrey]

Using current development hg default I get the
following:
octave:1> ff1=fopen('test_tex.ps');
octave:2> [er1,msg1]=fcntl(ff1,F_GETFL,O_APPEND)
er1 =  32768
msg1 =
octave:3> stat('test_tex.ps')
ans =
{
  dev =  24
  ino =  36732938
  mode =  33204
  modestr = -rw-rw-r--
  nlink =  1
  uid =  2188
  gid =  2188
  rdev = 0
  size =  41489
  atime =  1.2078e+09
  mtime =  1.2078e+09
  ctime =  1.2078e+09
  blksize =  32768
  blocks =  88
}

octave:4> [er1,msg1]=fcntl('test_tex.ps',F_GETFL,O_APPEND)
er1 =  32768
msg1 =
octave:5>
octave:6> [er1,msg1]=fcntl(ff1,F_GETFD,O_APPEND)
er1 = 0
msg1 =

===========================================

However, what I really need is a version of "stat" which accepts a fid
rather than the filename.  Or, a function which returns the filename for
the fid as an argument.  This could be implemented by allowing an
argument (fid) in the freport function.

This is part of trying to detemine if __go_draw_axes__.m is trying
to write to a window or is outputting to a file.  But, the ability to 
detemine
fid properties would be a help in general.

Michael

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