format as a regular expression

regex describing an identifier or a Wikidata property. When using on property constraints, ensure syntax is a PCRE

Wikidata entity: P1793



P973 described at URL Url PCRE2 specification ???
P1630 formatter URL String https://regex101.com/?regex=$1 ???
P31 instance of ... Q19847637 (Wikidata property for an identifier) Wikidata property for an identifier
P31 instance of ... Q21099935 (Wikidata property with datatype string that is not an external identifier) Wikidata property with datatype string that is not an external identifier
P31 instance of ... Q21504947 (Wikidata property to indicate a constraint) Wikidata property to indicate a constraint
P31 instance of ... Q108566342 (Wikidata property related to classification schemes) Wikidata property related to classification schemes
P6104 maintained by WikiProject ... Q56162322 (WikiProject Property constraints) WikiProject Property constraints
P2302 property constraint ... Q19474404 (single-value constraint) single-value constraint
P2302 property constraint ... Q21510851 (allowed qualifiers constraint) allowed qualifiers constraint
P2302 property constraint ... Q52004125 (allowed-entity-types constraint) allowed-entity-types constraint
P2302 property constraint ... Q53869507 (property scope constraint) property scope constraint
P2302 property constraint ... Q21502404 (format constraint) format constraint
P2302 property constraint ... Q21503250 (subject type constraint) subject type constraint
P3254 property proposal discussion Url Wikidata:Property proposal/Archive/29 - Wikidata ???
P1659 related property ... P2916 (syntax clarification) syntax clarification
P1659 related property ... P4240 (regular expression syntax) regular expression syntax
P1659 related property ... P8460 (applies if regular expression matches) applies if regular expression matches
P1659 related property ... P8770 (format as language specific regular expression) format as language specific regular expression
P1659 related property ... P9790 (Smithsonian trinomial format regex) Smithsonian trinomial format regex
P2668 stability of property value ... Q24025284 (sometimes changes) sometimes changes
P1629 Wikidata item of this property ... Q185612 (regular expression) regular expression
P1855 Wikidata property example ... Q845956 (ISO 639-3) ISO 639-3
P1855 Wikidata property example ... Q183205 (NTFS) NTFS
P2271 Wikidata property example for properties ... P345 (IMDb ID) IMDb ID
P2271 Wikidata property example for properties ... P7242 (Laws & Regulations Database of the Republic of China ID) Laws & Regulations Database of the Republic of China ID
P2559 Wikidata usage instructions Monolingualtext 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" ???

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