Core Functionality for the 'rebus' Package
The start or end of a string.
Convert or test for regex objects
Backreferences
Capture a token, or not
A range or char_class of characters
Class Constants
Character classes
Combine strings together
Escape special characters
Print or format regex objects
Treat part of a regular expression literally
Lookaround
Apply mode modifiers
Alternation
Make the regular expression recursive.
Create a regex
Repeat values
Force the case of replacement values
Special characters
Word boundaries
Build regular expressions piece by piece using human readable code. This package contains core functionality, and is primarily intended to be used by package developers.
Useful links