[Question type] Is pattern matching fully explained in documentation?

[trsh]

Document: https://winkjs.org/wink-nlp/custom-entities.html

Statements "Each option is separated by a vertical pipe character as in [NOUN|PROPN]" and "An option may be empty as in the case of the first two sets of options — [|DET] and [|ADJ]" suggest that the symbol "|" can be used as OR operator between 2 options, and if at beginning, the option can be absent.

Are there any more special symbols we can use to achieve certain pattern matching, besides "^" for escaping?

[sanjayaksaxena]

Hello @trsh

Idea to show absence right in the beginning is more of a best practice — basically to avoid any inadvertent miss.

There is only a single character — ^ available for escaping; if you wish to detect it in the pattern then please use ^^.

We can help further if you explain the use-case.

Best,
Sanjaya