Revision control
++ # R13 (skill-language-style): spell out one through nine; use numerals for
++ # 10 and above. EXPERIMENTAL -- flagged for empirical testing: this is
++ # expected to over-fire on version numbers, dimensions, and code values,
++ # which R13 explicitly exempts and a lexical rule can't distinguish from
++ # prose counts. See test fixture for the false-positive evidence.
++ extends: existence
++ message: "Spell out '%s' (one through nine) in prose, unless it's a dimension, version, or code value (see R13)."
++ link: https://learn.microsoft.com/en-us/style-guide/numbers
++ level: suggestion
++ scope: text
++ nonword: true
++ tokens:
++ - '(?<![\w.])[1-9](?![\w.%])'