7:48 AM
Stefan Kottwitz has unfrozen this room.

I'm working on an answer to this question:
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Consider the following MWE, test.tex: \documentclass[12pt]{article} \begin{document} \tracingassigns=1 \tracingmacros=1 \def\aaa{something} \def\bbb{else \aaa, else} \edef\ccc{third \bbb, level} \tracingassigns=0 \tracingmacros=0 \end{document} If you build this with pdflatex test.tex - ...

The result is a LaTeX package for pretty-printing trace log files which parses the information given about the processing state and actions performed and generates a more informative view with a lot of navigation links, bookmarks etc (I expect this only works with pdflatex in pdf mode at the moment).
The package is on the TeX.SX launchpad site now: bazaar.launchpad.net/~tex-sx/tex-sx/development/view/head:/…
Download also bazaar.launchpad.net/~tex-sx/tex-sx/development/view/head:/… (to make a nice long log file) and then run pdflatex twice on bazaar.launchpad.net/~tex-sx/tex-sx/development/view/head:/… to get the test output.
Only assignments are handeled right now. I'll write an answer to the question as soon as also macro expansions work. But I'm working on this since christmas already, so I thought I'd better get it under version control ;-)
Of course, I'd be delighted about any kind of early feedback :-)
You'll have to get along with trial and error for the time being as there isn't much in the way of documentation. I'll work on it in due time, but handling macros has top priority now...