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Wildcards

Usage

zero_or_more(..., type = c("greedy", "lazy", "possessive"))

one_or_more(..., type = c("greedy", "lazy", "possessive"))

maybe(..., type = c("greedy", "lazy", "possessive"))

Arguments

...

shortcuts, R variables, text, or other rex functions.

type

the type of match to perform.

There are three match types

  1. greedy: match the longest string. This is the default matching type.

  2. lazy: match the shortest string. This matches the shortest string from the same anchor point, not necessarily the shortest global string.

  3. possessive: match and don't allow backtracking

Functions

  • zero_or_more: match ... zero or more times.

  • one_or_more: match ... one or more times.

  • maybe: match ... zero or one times.

See also