Not compatible with \dump precompilation

[kbauer]

LaTeX has a mechanism, where preambles can be precompiled for faster subsequent compilation, that can be summarized as

• Create a separate file document_preamble.tex.
• Compile it with pdflatex -ini "&pdflatex" "document_preamble" "\\dump" creating a document_preamble.fmt binary dump of several megabytes.
• In document.tex, load this "format" file by starting the file with %&document_preamble. Otherwise it is compiled with pdflatex document as usual.

Expected behavior

• During compilation of the preamble, no .axp file should be created.
• When compiling document.tex, document.axp should be created.

Actual behavior

• During compilation of the preamble, document_preamble.axp is created.
• When compiling document.tex, no .axp file is created, leading to a "no such file" error when the appendix is typeset.

Cause

The axp file is created as \jobname.axp at the time, when the apxproof is loaded, i.e. when \usepackage{apxproof} is expanded. When working with precompiled preambles, at that time \jobname is document_preamble instead of document.

If nothing else prevents it, the obvious fix would be to defer the initialization of the .axp file with an \AtBeginDocument.

[PierreSenellart]

Thanks for the issue, and for the fix! You taught me about this precompilation mechanism. This is a straightforward fix indeed, merged in (abede86) with a few minor corrections. Will be integrated into the next release (1.0.7), once I process all your other issues. :-)