datestr bug

[Ben Abbott]

On Jul 24, 2008, at 9:24 AM, John W. Eaton wrote:

> On 23-Jul-2008, Ben Abbott wrote:
>
> | Another possible solution (hack) is to replace the offending line  
> with
> |
> |  nd  = strfind (str, "d");
> |  nd  = setdiff (nd, strfind (str,"day"));
> |  nd  = setdiff (nd, strfind (str,"dnesday"));
> |  str(nd) = names_d{weekday (datenum (v(i,1), v(i,2), v(i,3)))};
>
> I'm not applying this change because I think we should be able to come
> up with a proper solution that is not just a band-aid kluge fix.

hmmm ... perhaps strrep.m could be modified to allow for a mask as a  
fourth argument?

  For example, it might be modified to work as below ...

	octave:#> str = "d == dddd";
	octave:#> mask = zeros (size (str));
	octave:#> [str, mask] = strrep (str, "dddd", "Wednesday", mask)

	str = "d == Wednesday"
	mask = [0 0 0 0 0 1 1 1 1 1 1 1 1 1]

	octave:#> [str, mask] = strrep (str, "d", "W", mask)

	str = "W = Wednesday"
	mask = [1 0 0 0 0 1 1 1 1 1 1 1 1 1]

The new version of strrep might replace the original, a new function  
(__strrep__.m ?) or a subfunction of datestr.

Comments/Suggestions?

Ben