[pdftex] pdfTeX bug

[Ramón Casares]

Hi list!

Every pdf produced by pdfTeX includes unescaped parenthesis inside a string,
specifically in the /PTEX.Fullbanner entry of the info dictionary
that is referred to in the pdf trailer.
You can see it, for example, in the cover of
"The pdfTEX user manual" November 23, 2010 Rev. 655.

This means that all of them are not valid.
For example, "The pdfTeX user manual" is reported as
"Format: PDF", "Status: Not well-formed",
by Jhove, which is a validator.

Some sanitation as done by \pdfescapestring would be advisable,
although spaces don't need to be converted.
An easier solution is not to use parenthesis in the banner;
square brackets, [], are OK.
Another is just to delete the /PTEX.Fullbanner entry.

Thanks for your attention,
   Ramón