Regular Expressions 101

Pro

1st Alternative(?:\'([^\']*[\'s]?)\'|\"([^\"]*)\")

Non-Capturing Group(?:\'([^\']*[\'s]?)\'|\"([^\"]*)\")

1st Alternative\'([^\']*[\'s]?)\'

\'the literal ' (39₁₀ / 47₈ / 27₁₆)

Group 1([^\']*[\'s]?)

Negated Character Class[^\']*

*matches any number of characters outside the set below:

\'the literal ' (39₁₀ / 47₈ / 27₁₆)

Character Class[\'s]?

?matches at most one character from the set below:

\'the literal ' (39₁₀ / 47₈ / 27₁₆)

sthe literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

\'the literal ' (39₁₀ / 47₈ / 27₁₆)

2nd Alternative\"([^\"]*)\"

\"the literal " (34₁₀ / 42₈ / 22₁₆)

Group 2([^\"]*)

Negated Character Class[^\"]*

*matches any number of characters outside the set below:

\"the literal " (34₁₀ / 42₈ / 22₁₆)

2nd Alternative[^\s,<>=!]+

Negated Character Class[^\s,<>=!]+

+matches at least one character outside the set below:

\sany whitespace character

,the literal , (44₁₀ / 54₈ / 2C₁₆)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

3rd Alternative(?:,|[<>!]?=|<>?|>)

Non-Capturing Group(?:,|[<>!]?=|<>?|>)

1st Alternative,

,the literal , (44₁₀ / 54₈ / 2C₁₆)

2nd Alternative[<>!]?=

Character Class[<>!]?

?matches at most one character from the set below:

<the literal < (60₁₀ / 74₈ / 3C₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

3rd Alternative<>?

<the literal < (60₁₀ / 74₈ / 3C₁₆)

>?optionally matches the literal > (62₁₀ / 76₈ / 3E₁₆)

4th Alternative>

>the literal > (62₁₀ / 76₈ / 3E₁₆)

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

(?:\'([^\']*[\'s]?)\'|\"([^\"]*)\")|[^\s,<>=!]+|(?:,|[<>!]?=|<>?|>)

Unit Tests

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