ChangelogC++ Style Guide

Each revision is frozen at its own URL, so an agent pointed at /cpp@2026.10/rules.md keeps the same rules until you bump it. The rule changes below are worked out from the revisions themselves. Also as Markdown.

1. Unreleased

   Live at /cpp, not pinned yet · 194 rules

   Appendix B's .clang-tidy now agrees with the guide, so the guide's own template passes it:

   • Static data members take the s_ prefix (ClassMemberPrefix), as section 5 names them.
   • Lowercase literal suffixes (0.25f) are allowed: readability-uppercase-literal-suffix is off.
   • do { } while (0) is allowed, since the assert macros in appendix D need it: cppcoreguidelines-avoid-do-while is off.
   • Project-prefixed macros (FG_ASSERT, FG_CORE_INFO) pass cppcoreguidelines-macro-usage; unprefixed macros are still reported.

   The template's sources are fixed for the checks that remain: Main.cpp catches exceptions at the boundary, and test-local Timesteps are const rather than constexpr.

   Rule changes since 2026.10

   No rule changes; prose, examples or formatting only.

2. 2026.10

   Released 2026-10-19 · 194 rules
   Read 2026.10rules.mdllms.txt

   The first pinned revision: the text published as rev. 2026.10 before guides were versioned. From this revision on, /cpp@<revision> URLs never change.

   Rules

   Initial revision: 194 rules.