Regular Expressions 101

Explanation

Pro

Positive Lookbehind(?<=,\s*)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\s*any whitespace character, repeated any number of times

Non-Capturing Group(?:([A-Z])\.?[a-üA-Z{\\'}]*(?:(-)| )?)

Group 1([A-Z])

Character Class[A-Z]

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

\.?optionally matches the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[a-üA-Z{\\'}]*

*matches any number of characters from the set below:

a-üone character from a (97₁₀) to ü (252₁₀) (case sensitive)

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

{the literal { (123₁₀ / 173₈ / 7B₁₆)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

Non-Capturing Group(?:(-)| )?

?repeats the group contents below at most once:

1st Alternative(-)

Group 2(-)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative

the literal (32₁₀ / 40₈ / 20₁₆)

Non-Capturing Group(?:([A-Z])(\.?)[a-üa-zA-Z{\\'}]*(?:(-)| )?)?

?repeats the group contents below at most once:

Group 3([A-Z])

Character Class[A-Z]

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

Group 4(\.?)

\.?optionally matches the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[a-üa-zA-Z{\\'}]*

*matches any number of characters from the set below:

a-üone character from a (97₁₀) to ü (252₁₀) (case sensitive)

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

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

{the literal { (123₁₀ / 173₈ / 7B₁₆)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

Non-Capturing Group(?:(-)| )?

?repeats the group contents below at most once:

1st Alternative(-)

Group 5(-)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative

the literal (32₁₀ / 40₈ / 20₁₆)

Non-Capturing Group(?:([A-Z])(\.)?[a-zA-Z{\\'}]*(?:(-)| )?)?

?repeats the group contents below at most once:

Group 6([A-Z])

Character Class[A-Z]

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

Group 7(\.)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[a-zA-Z{\\'}]*

*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)

{the literal { (123₁₀ / 173₈ / 7B₁₆)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

Non-Capturing Group(?:(-)| )?

?repeats the group contents below at most once:

1st Alternative(-)

Group 8(-)

2nd Alternative

Positive Lookahead(?= and|$)

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

Unit Test Summary

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Quick Reference

26 tokens

Regular Expression

(?<=,\s*)(?:([A-Z])\.?[a-üA-Z{\\'}]*(?:(-)| )?)(?:([A-Z])(\.?)[a-üa-zA-Z{\\'}]*(?:(-)| )?)?(?:([A-Z])(\.)?[a-zA-Z{\\'}]*(?:(-)| )?)?(?= and|$)

Unit Tests

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