Japanese documents record a pre-marriage surname as 旧姓, conventionally parenthesized with a colon: 山田花子（旧姓：佐藤）. Today the fullwidth parens are nickname delimiters (#273), so 旧姓：佐藤 presumably lands in nickname as literal text. The maiden-marker mechanism (#274: née, geb.) routes a following name to maiden, but it operates on tokens in the main stream — this convention puts the marker inside a delimited region, plus a colon.
Settling this needs: whether marker recognition should reach into extracted regions (a mechanism change), whether 旧姓 alone (spaced, unparenthesized: 佐藤 旧姓 山田?) occurs enough to matter, and what the colon does to tokenization. Filed as a question rather than a plan — the answer may be "document as unsupported."
Japanese documents record a pre-marriage surname as 旧姓, conventionally parenthesized with a colon: 山田花子（旧姓：佐藤）. Today the fullwidth parens are nickname delimiters (#273), so 旧姓：佐藤 presumably lands in
nicknameas literal text. The maiden-marker mechanism (#274: née, geb.) routes a following name tomaiden, but it operates on tokens in the main stream — this convention puts the marker inside a delimited region, plus a colon.Settling this needs: whether marker recognition should reach into extracted regions (a mechanism change), whether 旧姓 alone (spaced, unparenthesized: 佐藤 旧姓 山田?) occurs enough to matter, and what the colon does to tokenization. Filed as a question rather than a plan — the answer may be "document as unsupported."