Will Robertson wrote:
> On 13/09/2008, at 3:51 PM, Joseph Wright wrote:
>> Using \PackageError {package} {A traditional error} \@ehc:
>> ! Package package Error: A traditional error.
>> See the package package documentation for explanation.
>> Type  H <return>  for immediate help.
>> ...
>> l.45 @ehc\endcsname}
>> ?
>> We still have the TeX part starting with the number, but no code line
>> directly underneath the test.
> Ah, yes.  I was confusing myself.
> I've never looked at how this is done internally before, but I'll add it
> to the list.

By the way, have you noticed that the errors always say :

LaTeX error on line <line> of file no file.

I guess something is not being set to show the file name.
Joseph Wright