poor line numbering in error messages when using unwind_protect

[Søren Hauberg]

Hi

Consider the following function (also attached)

  function badlinenumber ()
    unwind_protect
      error ("this raises and error at line 3");
    unwind_protect_cleanup
    end_unwind_protect
  endfunction

When I run it I get the following error message

  error: this raises and error at line 3
  error: called from:
  error:   /home/sh/Skrivebord/badlinenumber.m at line 2, column 3

I would expect the last line to say "line 3, ..." instead of "line
2, ...".

I see something similar with try-catch statements. Consider (also
attached)

  function badlinenumber2 ()
    try
      error ("this raises and error at line 3");
    catch
      disp (lasterror ()(1).stack.line);
    end_try_catch
  endfunction

When I call this function I get '2' where I would expect '3'.

Now that I'm testing this I see the same issue with 'for' loops,

  function badlinenumber3 ()
    for k = 1:10
      error ("this raises and error at line 3");
    endfor
  endfunction

which once again gives me an error at line 2 instead of 3.

Søren



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