Documentation

A warts-and-all account of cutting the Boost.SML 1.2.0 release — four new public APIs, a behavior change rooted in undefined behavior, a type-name Heisenbug that only fired on GCC and MSVC, a dead “Run” button, and the surprisingly deep rabbit hole of making 30 Compiler Explorer links that actually work.

Eigen’s .inc plugin headers were read by Doxygen but never preprocessed as C++ — meaning macros like EIGEN_PARSED_BY_DOXYGEN were silently ignored. Here’s how I verified it in Docker and what the one-line fix looks like.