Regular Expressions 101

customer name is the literal text customer name is (case sensitive)

Group 1([\w\s]*?(?=(?:and|or|$)))?

?repeats the group contents below at most once:

Character Class[\w\s]*?

*?matches any number of characters from the set below:

\wany word character

\sany whitespace character

Positive Lookahead(?=(?:and|or|$))

Non-Capturing Group(?:and|or|$)

1st Alternativeand

andthe literal text and (case sensitive)

2nd Alternativeor

orthe literal text or (case sensitive)

3rd Alternative$

$end of line

Non-Capturing Group(?:(?:(?:and|or) customer id is )(\d*)|c)?

?repeats the group contents below at most once:

1st Alternative(?:(?:and|or) customer id is )(\d*)

Non-Capturing Group(?:(?:and|or) customer id is )

Non-Capturing Group(?:and|or)

1st Alternativeand

andthe literal text and (case sensitive)

2nd Alternativeor

orthe literal text or (case sensitive)

customer id is the literal text customer id is (case sensitive)

Group 2(\d*)

\d*a digit, repeated any number of times

2nd Alternativec

cthe literal c (99₁₀ / 143₈ / 63₁₆) (case sensitive)

?optionally matches the literal (32₁₀ / 40₈ / 20₁₆)

Non-Capturing Group(?:(?:(?:and|or) policy id is ([a-zA-Z0-9]*)))?

?repeats the group contents below at most once:

Non-Capturing Group(?:(?:and|or) policy id is ([a-zA-Z0-9]*))

Non-Capturing Group(?:and|or)

1st Alternativeand

andthe literal text and (case sensitive)

2nd Alternativeor

orthe literal text or (case sensitive)

policy id is the literal text policy id is (case sensitive)

Group 3([a-zA-Z0-9]*)

Character Class[a-zA-Z0-9]*

*matches any number of characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

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

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25 tokens

Regular Expression

customer name is ([\w\s]*?(?=(?:and|or|$)))?(?:(?:(?:and|or) customer id is )(\d*)|c)? ?(?:(?:(?:and|or) policy id is ([a-zA-Z0-9]*)))?

Unit Tests

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