character_class_escape(x)## S3 method for class 'regex':
character_class_escape(x)
## S3 method for class 'character_class':
character_class_escape(x)
## S3 method for class 'character':
character_class_escape(x)
## S3 method for class 'list':
character_class_escape(x)
## S3 method for class 'default':
character_class_escape(x)
regex
: objects are passed through unchanged.character_class
: objects are passed through unchanged.character
: objects properly escaped for character classes.list
: callcharacter_class_escape
on all elements of the list.default
: coerce tocharacter
andcharacter_class_escape
.