Profiling Org->HTML formal grammar and optimizing it: orgwebalchemy jointhefreeworld.org

The OrgWebAlchemy author reports new Markdown rendering and broader Org support in the Guile library, alongside profiling-driven parser changes. Parsing a 58 KB README now takes 5.1 ms and allocates 3.9 MB, compared with 32.2 ms and 30.3 MB before; a separate scanner and linear-collapse rewrite also addresses a long-line slowdown that previously grew quadratically. The author says the changes were checked with 155 test definitions, 281 assertions and equivalence tests on about 70,000 inputs.