format as a regular expression (P1793)
regex describing an identifier or a Wikidata property. When using on property constraints, ensure syntax is a PCRE
- regex
- regular expression
- allowed values
- regexp
| Language | Label | Description | Also known as |
|---|---|---|---|
| default for all languages | No label defined |
||
| English | format as a regular expression |
regex describing an identifier or a Wikidata property. When using on property constraints, ensure syntax is a PCRE |
|
Data type
String
Statements
When used in property constraint, it should contain PCRE2 regular expression, treated as "full match". For example, "(?i)[a-z]+|\d+|" means that validated string should match /^(?:[a-z]+|\d+)$/i or be set to "no value" or "unknown value" (English)
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在属性约束中使用时，它应该包含 PCRE2 正则表达式，并被视为“完全匹配”。例如，"(?i)[a-z]+|\d+|" 表示验证的字符串应该匹配 /^(?:[a-z]+|\d+)$/i，或者被设置为“无值”或“未知值”。 (Chinese)
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no value
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Constraints
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((?:(?:[^?+*{}()[\]\\|]+|\\.|\[(?:\^?\\.|\^[^\\]|[^\\^])(?:[^\]\\]+|\\.)*\]|\((?:\?[:=!]|\?<[=!]|\?>)?(?1)??\)|\(\?(?:R|[+-]?\d+)\))(?:(?:[?+*]|\{\d+(?:,\d*)?\})[?+]?)?|\|)*)
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(?!.*A-z).+
[A-z] will match some punctuation characters as well. Use [A-Za-z] instead if this should match uppercase and lowercase a to z. (English)
[A-z] 也会匹配一些标点符号。如果只想匹配大小写字母 a 到 z，请使用 [A-Za-z]。 (Chinese)
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(?!.*\\/).+
Forward slashes should not be escaped. (English)
正斜杠不应进行转义。 (Chinese)
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