Package syntax parses regular expressions into parse trees and compiles parse trees into programs.

Compile parses a regular expression and returns, if successful, a Regexp object that can be used to match against text.

CompilePOSIX is like Compile but restricts the regular expression to POSIX ERE (egrep) syntax and changes the match semantics to leftmost-longest.

Match checks whether a textual regular expression matches a byte slice.

MatchReader checks whether a textual regular expression matches the text read by the RuneReader.

MatchString checks whether a textual regular expression matches a string.

MustCompile is like Compile but panics if the expression cannot be parsed.

MustCompilePOSIX is like CompilePOSIX but panics if the expression cannot be parsed.

QuoteMeta returns a string that quotes all regular expression metacharacters inside the argument text; the returned string is a regular expression matching the literal text.

Regexp is the representation of a compiled regular expression.