Regular Expressions 101

(?x)applies the following effective flags to the remainder of the pattern: gmx

x modifier: extended. Ignores unescaped whitespace and comments outside character classes

Definition Group(?(DEFINE) (?<AutoItString> "(?> [^"]+ | "" )*" # double quoted string | '(?> [^']+ | '' )*' # single quoted string ) )

Group AutoItString(?<AutoItString> "(?> [^"]+ | "" )*" # double quoted string | '(?> [^']+ | '' )*' # single quoted string )

1st Alternative "(?> [^"]+ | "" )*" # double quoted string

"the literal text "

Atomic Group(?> [^"]+ | "" )*

*repeats the group contents below any number of times:

1st Alternative [^"]+

Negated Character Class[^"]+

+matches at least one character outside the set below:

"the literal " (34₁₀ / 42₈ / 22₁₆)

2nd Alternative ""

"" the literal text ""

" the literal text "

Comment: double quoted string

2nd Alternative '(?> [^']+ | '' )*' # single quoted string

'the literal text '

Atomic Group(?> [^']+ | '' )*

*repeats the group contents below any number of times:

1st Alternative [^']+

Negated Character Class[^']+

+matches at least one character outside the set below:

'the literal ' (39₁₀ / 47₈ / 27₁₆)

2nd Alternative ''

'' the literal text ''

' the literal text '

Comment: single quoted string

(?&AutoItString)calls group AutoItString as a subroutine

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

No unit tests · Add a test to get started

25 tokens

Regular Expression

(?x)(?(DEFINE)
   (?<AutoItString> "(?> [^"]+ | "" )*" # double quoted string
                    | 
                    '(?> [^']+ | '' )*' # single quoted string
   ) 
)
(?&AutoItString)

Unit Tests

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