[derek73]

Follow-up to #738. _comma.decide had two more hand copies of the one-word vocab:title test that #738 replaced in C12 (a suffix word ending the name before the comma). A title joined by P3 (Mr. and Mrs.) doesn't pass that test. Both sites now ask is_title_piece:

• C5's speaker scan: the unambiguous suffix word "not also title vocabulary" that makes paired initials the credential run.
• pair_only: "only titles" in front of the first pair. This is the C11 report's paired-initials exception.

Default vocabulary: no reading moves. The two tests differ only on a joined title, and both sites sit behind C4's run test: the speaker scan runs only when the part is the credential run, and the report asks pair_only only alongside it. A joined title's free connective fails C4's every-word-a-suffix-word test, so by default neither site ever meets one. (A connective that is suffix vocabulary gets frozen rather than joined.)

• Measured (2026-10-19) against the parent 550720c, extracted with git archive and __file__ asserted on both sides: 7 names before the comma × 15 lead-ins × 11 tails × 3 orders = 3,465 parses, with 0 moves in readings, ambiguity details or initials(). The grid is in decisions/C5.
• Wider grids: the reviews ran about 200,000 more default-vocabulary parses each, covering more heads, lead-ins and the comma policies. No moves.

One configured move, accepted. The code review found it. With a custom connective that a configured delimiter splits into suffix words, Lexicon.default().add(conjunctions={'phd/md'}) plus Policy(extra_suffix_delimiters=frozenset({'/'})), the joined title passes C4's run test:

Input	Before	After
John Smith, Ms. PHD/MD Ph. D. GJ	given John, family Smith, suffix Ms. PHD/MD Ph. D. GJ	title Ms. PHD/MD Ph. D., given GJ, family John Smith
John Smith, MD PHD/MD Ms. G.J. K.L.	same fields, no report	same fields, plus SUFFIX_OR_NAME

This is the direction #738 took: a joined title reads as a lone title word does. It's recorded as accepted in decisions/C5, and decisions/C11 points to the entry.

Frames: at most +3, only on parts holding paired initials. Smith, John and the reference row are unchanged.

No rule text or snapshot changes. Suite: 21,589 passed; mypy and ruff clean.

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.05%. Comparing base (550720c) to head (9e90a90).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #739   +/-   ##
=======================================
  Coverage   99.05%   99.05%           
=======================================
  Files          46       46           
  Lines        4647     4647           
=======================================
  Hits         4603     4603           
  Misses         44       44           

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