docs: FREESTANDING regex disposition — EigenRegex route is now concrete#357
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EigenRegex reached ERE parity (S8, 2026-07-01): escapes, POSIX classes,
{n,m} intervals, re_replace, and a builtin-shaped compat layer
(lib/regex_compat.eigs) differential-tested against the regex_* builtins
as the oracle. Point the ledger's regex entry at it and record the two
documented divergences (leftmost-longest vs leftmost-first, no \b).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Doc-only. EigenRegex hit ERE parity today (InauguralSystems/EigenRegex#4): escapes, POSIX classes,
{n,m}intervals,re_replace, and a builtin-shaped compat layer (lib/regex_compat.eigs) differential-tested against theregex_*builtins as the oracle. The freestanding ledger's regex entry said "drop, or route to EigenRegex" — the route now exists, so record it plus the two documented divergences (POSIX leftmost-longest vs Pike-VM leftmost-first; no\b).🤖 Generated with Claude Code