Round 3 of R4.5 found five ways the reverse reading drifted from markdown-rs: kept indents and marks were eaten as joins, autolink text was decoded, table code kept its escaped pipes, decoded white space could not join or drop, and C0/C1 numeric references kept their controls. Matching now tries an equal character first, a drawn space against any line end next, and drops white space decoded or not; autolinks read as written, table cell code reads \| as |, and numeric references follow markdown-rs. The reviewer's probes are regressions. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>