Pure mruby Regexp

Metacharacters

• . Any single character
• ? Zero or one
• * Zero or more
• + One or more
• ?? Zero or one (reluctant)
• *? Zero or more (reluctant)
• +? One or more (reluctant)
• ?+ Zero or one (possessive)
• *+ Zero or more (possessive)
• ++ One or more (possessive)
• {N} N times
• {N,} N or more
• {,N} N or less
• {N,M} Between N and M
• {N,}? N or more (reluctant)
• {,N}? N or less (reluctant)
• {N,M}? Between N and M (reluctant)
• ^ Start of line
• $ End of line
• | Alternation
• [] Character class
• [^] Negated character class
• () Group
• (?<name>) Named group
• (?'name') Named group
• (?:) Non-capturing group
• (?>) Atomic group
• \w Word character
• \W Non-word character
• \s Whitespace character
• \S Non-whitespace character
• \d Digit
• \D Non-digit
• \h Hexadecimal digit
• \H Non-hexadecimal digit

Replacement metacharacters

• \N Submatch
• \& Entire match
• \` Substring before match
• \' Substring after match
• \+ Last submatch
• \k<name> Named submatch

Options

• /i Case insensitive
• /m Multiline mode