(P1793)
English
format as a regular expression
regex describing an identifier or a Wikidata property. When using on property constraints, ensure syntax is a PCRE
- regex
- regular expression
- allowed values
- regexp
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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[^\00\/]{1,255}
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https://regexper.com/#$1
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((?:(?:[^?+*{}()[\]\\ (English)
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)
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