clear all inside function

[John W. Eaton]

What is supposed to happen with "clear all" inside a function?

Given the claim that the program posted here

  https://www-old.cae.wisc.edu/pipermail/help-octave/2009-June/014713.html

works in Matlab, it seems it should not be clearing functions.  I
guess this works in 3.0.x, but with the current sources, and a .m file
containing the following

  function main ()
    clear all
    sub
  end
  function sub ()
    'this is sub'
  end

I see

  octave:2> main
  error: `sub' undefined near line 3 column 3
  error: called from:
  error:   /scratch/jwe/build/octave/main.m at line 3, column 3

jwe