Checks whether all or some of the elements of x match pattern using grepl.
check_pattern(x, pattern, all = TRUE, x_name = substitute(x), error = TRUE)The object to check.
A string of the regular expression.
A flag indicating whether all or some of the element must match pattern.
A string of the name of the object x.
A flag indicating whether to throw an informative error or immediately generate an informative message if the check fails.
An invisible copy of x (if it doesn't throw an error).