[pdftex] pdftex deterministic?

[Geoffrey Alan Washburn]

Thanh Han The wrote:
> I have made a script to compare 2 pdfs, which I use to
> quickly test whether a new version of pdftex produces
> different output from the previous version. The script use
> gs or pdftoppm to generate all pages of the pdfs as bitmaps,
> then compare them page by page using diff. If they are
> different, they are further compared by the 'compare' tool
> from image magick. If the difference is larger than a
> threshold, an image showing the differences is shown.
> 
> If anyone is interested in the script I will send it.


That sounds like it would be really useful.  I would certainly be 
interested in looking at it.