[derek73]

What

Strict-gap batch D, decided on 2026-11-03: si.toml takes de, the particle of Sri Lankan surnames of Portuguese origin (de Silva, de Mel, de Alwis). It is the file's first Latin-script word. The entry copies es.toml's (may_be_given = false).

Measured

• Strict losses (tools/differential/config_diff.py gaps on master f48c88a). Strict si broke 334 of the language's 340 broken records on de (Sampath Damika De Silva). The 340 fall to 6 on this change alone.
• Default and plain choices. The compiled default is unchanged. Over a grid of 12 Sri Lankan names under the three orders (each comma shape; cased, upper and lower spellings; a title and a credential beside them), the default and plain si move no cell.
• Strict si. Strict si, and strict si + en, move 28 cells each, every one onto the default's reading. The reviewed table of words strict ungates does not move.
• Committed corpora. The snapshot matches. Reading.languages of de gains si under the default and every other plain choice (the release log, usage.rst, _types.py and two tests list it); plain si names si alone, no role moving.

decisions/vocabulary-model gains the batch's entry. The RFC's list of files with no Latin-script vocabulary notes si's change.

Review round

An independent review found no defect. It reproduced 340 → 6, found the default and plain si reading alike in both trees over 59,321 local names, and read all 330 Sri Lankan ORCID names holding de: every one is Sinhalese, so ta.toml is owed nothing. Fixed after it:

• The decisions entry and this body give this batch's own figure.
• They say plain si names si alone among de's files.
• The entry gains a recompute recipe.
• The RFC's count is dated (26 files on 2026-10-31, 25 since si.toml took de) and its clause about strict si corrected.

This batch's entry points to batch A's entry (#1030): merge #1030 first.

Checks

• uv run pytest -q: 35,787 passed. uv run mypy, uv run ruff check.
• sphinx-build -b doctest and -W -b html; snapshot.py.
• Not run: -n0 -m serial and Python 3.15.

Merge note: #1031 (fil) and #1032 (ca) edit the same list of files for de. Whichever merges later takes every entry and rebuilds nameparser/config/_index.py.

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