[tex-live] Triggering mktextex

[Heiko Oberdiek]

Hello,

in comp.text.tex there is a discussion about mktextex.
The following test file for plainTeX shows the
primitives that calls mktextex (if MKTEXTEX is enabled):

\pdfobj file{file-pdfobj.dat}\relax
\openin5=file-openin.dat\relax
\pdffilesize{file-pdffilesize.dat}\relax
\pdffilemoddate{file-pdffilemoddate.dat}\relax
\pdfmdfivesum file{file-pdfmdfivesum.dat}\relax
\pdffiledump length 1{file-pdffiledump.dat}\relax
\input file-input.dat\relax
\pdfximage{file-pdfximage.dat}\relax
\csname @@end\endcsname\end

Result: mktextex is called for
* \pdfobj file
* \pdffilesize
* \pdffilemoddate
* \pdfmdfivesum
* \pdffiledump length (>=1)
* \input
* \pdfximage

The exception is
* \openin

Is this on purpose, accidentally, bug?
I couldn't find documentation/specification of this feature.

Yours sincerely
  Heiko