similar to prog.go in the go regex package...also with comment 'may not belong in this package' File provides operator constants for use by the Builde

fasttime holds a time value (ticks since clock initialization)

BmPrefix precomputes the Boyer-Moore tables for fast string scanning. These tables allow you to scan for the first occurrence of a string within a lar

Capture is a single capture of text within the larger original string

CharSet combines start-end rune ranges and unicode categories representing a set of characters

CompileOption configures Compile and MustCompile.

An Error describes a failure to parse a regular expression and gives the offending expression.

An ErrorCode describes a failure to parse a regular expression.

Group is an explicit or implit (group 0) matched group within the pattern

Match is a single regex result match that contains groups and repeated captures -Groups -Capture

MatchEvaluator is a function that takes a match and returns a replacement string to be used

Matcher is the common matching interface implemented by regexp.Regexp and this package's Regexp adapter. It includes the standard-library matching su

OptimizationOptions controls runtime limits, optional caches, and compile-time fast paths. For MaxBacktrackingStackSize, negative values allow unboun

It is built into a parsed tree for a regular expression. Implementation notes: Since the node tree is a temporary data structure only used during com

RegexOptions impact the runtime and parsing behavior for each specific regex. They are setable in code as well as in the regex pattern itself.

Regexp is the representation of a compiled regular expression. A Regexp is safe for concurrent use by multiple goroutines.

Regexp adapts a regexp2.Regexp to the matching method signatures of regexp.Regexp. The wrapped regexp2 engine can return match-time errors, most comm

StringPrefixFilter optionally searches string input before the engine decodes it to runes. It returns a byte index for a candidate match start, or ok=

fastclock provides a fast clock implementation. A background goroutine periodically stores the current time into an atomic variable. A deadline can

Test262 has hundreds of RegExp tests under test/built-ins/RegExp. These tables intentionally distill pattern-level scenarios that map to regexp2's API